Date   

Re: Wavelength for all Alt. Processes ?

Terry Glass
 

Would these units work for UV exposure? They are rated 390-400nm



All the Best,
Terry Glass

On Sep 7, 2021, at 4:01 AM, Scott Davis via groups.io <Scotttdavis@...> wrote:

I went with blacklight LEDs in my revamped exposure unit. They’re in the 380-390 range. I went a little overkill but I wanted to ensure even coverage for the largest possible prints I could make- I can go up to 16x20. So I have 16 strips of 22” length. My exposure times are 2 minutes now, down from 12+ with fluorescent bulbs, and more consistent. I’m printing palladium mostly at this point, with the odd cyanotype thrown in. Will be doing gum over pt/pd in the near future. 


On Sep 6, 2021, at 9:13 AM, Frank Gorga <fgorga@...> wrote:


My experience...

Processes that use the photo reduction of iron(III) to iron(II) are broadly sensitive to light at around 390 nm. Thus they work just fine with inexpensive BLB bulbs/LEDs. These sources also seem to work well for salted-paper. 

Photopolymer gravure does not work with the BLB sources, as it requires the shorter wavelengths of the more expensive 360 nm sources. I have no information on how the 360 nm sources work with the iron based processes, but they do seem to work for salted-paper. 

These days I use a simple plywood box with four strips of inexpensive,  pre-wired BLB LED strips which gives me 10 or 15 min exposure times for cyanotype and salted-paper. 

The nice thing about BLB LEDs is you don't need to really worry about managing the waste heat. My box has a few vent holes leftover from when it had fluorescent bulbs but no fan. It barely gets above ambient temperature by 15 min.

--- Frank 

On Sun, Sep 5, 2021, 3:13 PM Michael <pixelwaster@...> wrote:
I used to have a nice list of what range of light worked with what process.  I suspect it is on the drive that died.

I am looking to make a new one because I've seen youtubers use everything from 360nm (monochromatic)  to white light from a 500 watt tungsten spot. they all have short (<15 min) exposure times. I just would like to make an exposure box with the right light to start with.


Re: Wavelength for all Alt. Processes ?

Scott Davis
 

I went with blacklight LEDs in my revamped exposure unit. They’re in the 380-390 range. I went a little overkill but I wanted to ensure even coverage for the largest possible prints I could make- I can go up to 16x20. So I have 16 strips of 22” length. My exposure times are 2 minutes now, down from 12+ with fluorescent bulbs, and more consistent. I’m printing palladium mostly at this point, with the odd cyanotype thrown in. Will be doing gum over pt/pd in the near future. 


On Sep 6, 2021, at 9:13 AM, Frank Gorga <fgorga@...> wrote:


My experience...

Processes that use the photo reduction of iron(III) to iron(II) are broadly sensitive to light at around 390 nm. Thus they work just fine with inexpensive BLB bulbs/LEDs. These sources also seem to work well for salted-paper. 

Photopolymer gravure does not work with the BLB sources, as it requires the shorter wavelengths of the more expensive 360 nm sources. I have no information on how the 360 nm sources work with the iron based processes, but they do seem to work for salted-paper. 

These days I use a simple plywood box with four strips of inexpensive,  pre-wired BLB LED strips which gives me 10 or 15 min exposure times for cyanotype and salted-paper. 

The nice thing about BLB LEDs is you don't need to really worry about managing the waste heat. My box has a few vent holes leftover from when it had fluorescent bulbs but no fan. It barely gets above ambient temperature by 15 min.

--- Frank 

On Sun, Sep 5, 2021, 3:13 PM Michael <pixelwaster@...> wrote:
I used to have a nice list of what range of light worked with what process.  I suspect it is on the drive that died.

I am looking to make a new one because I've seen youtubers use everything from 360nm (monochromatic)  to white light from a 500 watt tungsten spot. they all have short (<15 min) exposure times. I just would like to make an exposure box with the right light to start with.


Re: Wavelength for all Alt. Processes ?

Michael
 

Thanks to those who replied and those who are going to.

The photopolymer not responding to BLB may be the reason I am having issues with my PCB etching masks exposure unit. It has a small fluorescent bulb and worked with the old spray-on system.

Multi-function light box.

Thanks again!


Re: Wavelength for all Alt. Processes ?

Frank Gorga
 

My experience...

Processes that use the photo reduction of iron(III) to iron(II) are broadly sensitive to light at around 390 nm. Thus they work just fine with inexpensive BLB bulbs/LEDs. These sources also seem to work well for salted-paper. 

Photopolymer gravure does not work with the BLB sources, as it requires the shorter wavelengths of the more expensive 360 nm sources. I have no information on how the 360 nm sources work with the iron based processes, but they do seem to work for salted-paper. 

These days I use a simple plywood box with four strips of inexpensive,  pre-wired BLB LED strips which gives me 10 or 15 min exposure times for cyanotype and salted-paper. 

The nice thing about BLB LEDs is you don't need to really worry about managing the waste heat. My box has a few vent holes leftover from when it had fluorescent bulbs but no fan. It barely gets above ambient temperature by 15 min.

--- Frank 


On Sun, Sep 5, 2021, 3:13 PM Michael <pixelwaster@...> wrote:
I used to have a nice list of what range of light worked with what process.  I suspect it is on the drive that died.

I am looking to make a new one because I've seen youtubers use everything from 360nm (monochromatic)  to white light from a 500 watt tungsten spot. they all have short (<15 min) exposure times. I just would like to make an exposure box with the right light to start with.


Re: Wavelength for all Alt. Processes ?

Eric Neilsen
 

I alternate  360 nm with 420 super actinic bulbs  peaking bulbs … 

. So I may not recall what, when, why.... Confirm again later 



On Sep 5, 2021, at 3:32 PM, Kurt Nagy <kakarott76@...> wrote:


365nm to 395nm

365 is optimal for exposure time but more expensive cost wise.

From: altphotolist@groups.io <altphotolist@groups.io> on behalf of Michael <pixelwaster@...>
Sent: Sunday, September 5, 2021 2:13:34 PM
To: altphotolist@groups.io <altphotolist@groups.io>
Subject: [altphotolist] Wavelength for all Alt. Processes ?
 
I used to have a nice list of what range of light worked with what process.  I suspect it is on the drive that died.

I am looking to make a new one because I've seen youtubers use everything from 360nm (monochromatic)  to white light from a 500 watt tungsten spot. they all have short (<15 min) exposure times. I just would like to make an exposure box with the right light to start with.


Re: Wavelength for all Alt. Processes ?

Tomas Sobota
 

If you build your exposure unit with led strips, a good idea is to use alternate strips of 360nm and 400nm leds. This arrangement will probably work for every known process. 360nm leds are much more expensive than 400nm though.
Tom


Re: Wavelength for all Alt. Processes ?

Kurt Nagy
 

365nm to 395nm

365 is optimal for exposure time but more expensive cost wise.


From: altphotolist@groups.io <altphotolist@groups.io> on behalf of Michael <pixelwaster@...>
Sent: Sunday, September 5, 2021 2:13:34 PM
To: altphotolist@groups.io <altphotolist@groups.io>
Subject: [altphotolist] Wavelength for all Alt. Processes ?
 
I used to have a nice list of what range of light worked with what process.  I suspect it is on the drive that died.

I am looking to make a new one because I've seen youtubers use everything from 360nm (monochromatic)  to white light from a 500 watt tungsten spot. they all have short (<15 min) exposure times. I just would like to make an exposure box with the right light to start with.


Wavelength for all Alt. Processes ?

Michael
 

I used to have a nice list of what range of light worked with what process.  I suspect it is on the drive that died.

I am looking to make a new one because I've seen youtubers use everything from 360nm (monochromatic)  to white light from a 500 watt tungsten spot. they all have short (<15 min) exposure times. I just would like to make an exposure box with the right light to start with.


Re: Printing digital negatives with Epson SureColor P700?

Carlos Alejandro,
 

I will certainly try that instead of the spray glued white paper.

I figured out that the incomplete printing of the image was likely a spooling problem. I shut my system down and restarted. It printed perfectly.

I was not having trouble getting the film to be seen… with the paper lead. Once a roll is in the printer, it seems to work fine.

Thank you all for the tips.

I hope the solution helps others who may encounter this problem.

You might think… Epson could have suggested this… knowing all the parameters I gave them.

:)



Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Sep 2, 2021, at 2:58 PM, Dr Edward Draper, <platinumprinz@...> wrote:

My P800 uses the 17” film

To ensure the front edge is sensed every time I run a black marker pen along the front edge -1/8” line

Works well for me

Edward



Working on the go on a screen keyboard - forgive minor errors, please

The big errors you should challenge


On 2 Sep 2021, at 15:34, Carlos Alejandro, <carlos@...> wrote:

Hi all,

I just got off the phone with Epson regarding their SC P-900 printer. It does NOT have a sensor for Over Head Transparency film. The only way it works, is what I have been doing which is gluing a strip of paper to the first feed end.

I am trying to print 16” wide image on a 17” roll, it will only print 13” of the 16” image… it cuts it off.

Is anyone using a different Transparency other than Pictorico that works?

After I find a workaround for this, I will call the manufacturers to see if they know how to deal with this problem.

The printer is great… but NOT for vellum or transparency films.



Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Jul 31, 2021, at 3:59 PM, Carlos Alejandro, <carlos@...> wrote:

Thank you, Debbie! I will try that. I am about to print a show in multiple media and am kind of dreading the “fun” of this aspect.



Carlos

[iPhone]


On Jul 31, 2021, at 3:49 PM, Debbie Warren, <dmw0529@...> wrote:

Hi Carlos, I had some similar problems with my P800, and Epson essentially said I was using an unapproved paper. My 2880 worked perfectly. Finally I spoke with someone in the wide format group and they were very helpful. They replaced my printer and I haven’t had any further issues after several years. They said to always ask to speak to someone in the pro/wide format area. Just FYI in case you haven’t tried that route yet. Good luck. 

Debbie

...,poorly typed with often unintelligible word substitutions. 

On Jul 31, 2021, at 3:34 PM, Carlos Alejandro, <carlos@...> wrote:

I have had so many problems with the P900 with pictórico and vellum. Epson replaced my first machine saying they’ve never had the problem. Second machine is the same. Works for a while… out of the box… then paper jam… and there is no paper jam. Doesn’t recognize material. I ended spray mounting a 2” strip to the vellum and then it worked. I never had this problem with my R2880. Epson basically blew me off.



Carlos

[iPhone]


On Jul 31, 2021, at 2:31 PM, ender100 via groups.io <Ender100@...> wrote:

No. Even if it is an issue there are fixes for it

Best Wishes,
Mark Nelson


Curve Calculator III for the Mac is Now Available

sent from my iPhonetypeDeviceThingy

On Jul 31, 2021, at 1:12 PM, Peter Frandsen <johngray571@...> wrote:


Not sure. The info I found was vague. It sounded like the printer didn't recognize the transparency film as a medium. Have you heard
of this kind of problem with an Epson P700? 

Thanks,

Peter



Re: Printing digital negatives with Epson SureColor P700?

Dr Edward Draper,
 

My P800 uses the 17” film

To ensure the front edge is sensed every time I run a black marker pen along the front edge -1/8” line

Works well for me

Edward



Working on the go on a screen keyboard - forgive minor errors, please

The big errors you should challenge


On 2 Sep 2021, at 15:34, Carlos Alejandro, <carlos@...> wrote:

Hi all,

I just got off the phone with Epson regarding their SC P-900 printer. It does NOT have a sensor for Over Head Transparency film. The only way it works, is what I have been doing which is gluing a strip of paper to the first feed end.

I am trying to print 16” wide image on a 17” roll, it will only print 13” of the 16” image… it cuts it off.

Is anyone using a different Transparency other than Pictorico that works?

After I find a workaround for this, I will call the manufacturers to see if they know how to deal with this problem.

The printer is great… but NOT for vellum or transparency films.



Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Jul 31, 2021, at 3:59 PM, Carlos Alejandro, <carlos@...> wrote:

Thank you, Debbie! I will try that. I am about to print a show in multiple media and am kind of dreading the “fun” of this aspect.



Carlos

[iPhone]


On Jul 31, 2021, at 3:49 PM, Debbie Warren, <dmw0529@...> wrote:

Hi Carlos, I had some similar problems with my P800, and Epson essentially said I was using an unapproved paper. My 2880 worked perfectly. Finally I spoke with someone in the wide format group and they were very helpful. They replaced my printer and I haven’t had any further issues after several years. They said to always ask to speak to someone in the pro/wide format area. Just FYI in case you haven’t tried that route yet. Good luck. 

Debbie

...,poorly typed with often unintelligible word substitutions. 

On Jul 31, 2021, at 3:34 PM, Carlos Alejandro, <carlos@...> wrote:

I have had so many problems with the P900 with pictórico and vellum. Epson replaced my first machine saying they’ve never had the problem. Second machine is the same. Works for a while… out of the box… then paper jam… and there is no paper jam. Doesn’t recognize material. I ended spray mounting a 2” strip to the vellum and then it worked. I never had this problem with my R2880. Epson basically blew me off.



Carlos

[iPhone]


On Jul 31, 2021, at 2:31 PM, ender100 via groups.io <Ender100@...> wrote:

No. Even if it is an issue there are fixes for it

Best Wishes,
Mark Nelson


Curve Calculator III for the Mac is Now Available

sent from my iPhonetypeDeviceThingy

On Jul 31, 2021, at 1:12 PM, Peter Frandsen <johngray571@...> wrote:


Not sure. The info I found was vague. It sounded like the printer didn't recognize the transparency film as a medium. Have you heard
of this kind of problem with an Epson P700? 

Thanks,

Peter


Re: Printing digital negatives with Epson SureColor P700?

Carlos Alejandro,
 

I am using Mirage. I will try that.

Thank you.


Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Sep 2, 2021, at 11:17 AM, Roberto Aguilar <fotorat@...> wrote:

Hi Carlos,
Are you printing with PRINTOOL?  If so, try setting the print size to 16.8 inches instead of 17 inches.  I had the same thing happen on my P800

Let me know

Roberto

On Thursday, September 2, 2021, 04:08:27 PM GMT+1, Carlos Alejandro, <carlos@...> wrote:


I appreciate any thoughts, suggestions, recommendations.

I am printing on a 17” wide roll and the image is only printing 13” of the 16” that are in the file. 

I flopped the image and it just printed the other side.

I glued strips of paper on both sides and on the feed end and it did the same thing.

Thanks for any tips.


Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Sep 2, 2021, at 11:02 AM, Carlos Alejandro, <carlos@...> wrote:

Hi.
 Currently I am using Epson Archival Matte Paper because it needs matt ink not glossy to print.

And Standard 1440 8bit


Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Sep 2, 2021, at 10:51 AM, ender100 via groups.io <Ender100@...> wrote:

Carlos, 

I know three people with Epson P900’s printing on Pictorico with no problem.  

What is happening on your printer?  What media setting are you using?

Best Wishes,
Mark Nelson


Curve Calculator III for the Mac is Now Available

sent from my iPhonetypeDeviceThingy

On Sep 2, 2021, at 9:34 AM, Carlos Alejandro, <carlos@...> wrote:

Hi all,

I just got off the phone with Epson regarding their SC P-900 printer. It does NOT have a sensor for Over Head Transparency film. The only way it works, is what I have been doing which is gluing a strip of paper to the first feed end.

I am trying to print 16” wide image on a 17” roll, it will only print 13” of the 16” image… it cuts it off.

Is anyone using a different Transparency other than Pictorico that works?

After I find a workaround for this, I will call the manufacturers to see if they know how to deal with this problem.

The printer is great… but NOT for vellum or transparency films.



Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Jul 31, 2021, at 3:59 PM, Carlos Alejandro, <carlos@...> wrote:

Thank you, Debbie! I will try that. I am about to print a show in multiple media and am kind of dreading the “fun” of this aspect.



Carlos

[iPhone]


On Jul 31, 2021, at 3:49 PM, Debbie Warren, <dmw0529@...> wrote:

Hi Carlos, I had some similar problems with my P800, and Epson essentially said I was using an unapproved paper. My 2880 worked perfectly. Finally I spoke with someone in the wide format group and they were very helpful. They replaced my printer and I haven’t had any further issues after several years. They said to always ask to speak to someone in the pro/wide format area. Just FYI in case you haven’t tried that route yet. Good luck. 

Debbie

...,poorly typed with often unintelligible word substitutions. 

On Jul 31, 2021, at 3:34 PM, Carlos Alejandro, <carlos@...> wrote:

I have had so many problems with the P900 with pictórico and vellum. Epson replaced my first machine saying they’ve never had the problem. Second machine is the same. Works for a while… out of the box… then paper jam… and there is no paper jam. Doesn’t recognize material. I ended spray mounting a 2” strip to the vellum and then it worked. I never had this problem with my R2880. Epson basically blew me off.



Carlos

[iPhone]


On Jul 31, 2021, at 2:31 PM, ender100 via groups.io <Ender100@...> wrote:

No. Even if it is an issue there are fixes for it

Best Wishes,
Mark Nelson


Curve Calculator III for the Mac is Now Available

sent from my iPhonetypeDeviceThingy

On Jul 31, 2021, at 1:12 PM, Peter Frandsen <johngray571@...> wrote:


Not sure. The info I found was vague. It sounded like the printer didn't recognize the transparency film as a medium. Have you heard
of this kind of problem with an Epson P700? 

Thanks,

Peter





Re: Printing digital negatives with Epson SureColor P700?

Cedric Muscat
 

Maybe you have a roll width of 17" but your printer is not able to print that width?

Greetings
Cedric Muscat








On Thu, 2 Sept 2021 at 17:08, Carlos Alejandro, <carlos@...> wrote:
I appreciate any thoughts, suggestions, recommendations.

I am printing on a 17” wide roll and the image is only printing 13” of the 16” that are in the file. 

I flopped the image and it just printed the other side.

I glued strips of paper on both sides and on the feed end and it did the same thing.

Thanks for any tips.


Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Sep 2, 2021, at 11:02 AM, Carlos Alejandro, <carlos@...> wrote:

Hi.
 Currently I am using Epson Archival Matte Paper because it needs matt ink not glossy to print.

And Standard 1440 8bit


Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Sep 2, 2021, at 10:51 AM, ender100 via groups.io <Ender100@...> wrote:

Carlos, 

I know three people with Epson P900’s printing on Pictorico with no problem.  

What is happening on your printer?  What media setting are you using?

Best Wishes,
Mark Nelson


Curve Calculator III for the Mac is Now Available

sent from my iPhonetypeDeviceThingy

On Sep 2, 2021, at 9:34 AM, Carlos Alejandro, <carlos@...> wrote:

Hi all,

I just got off the phone with Epson regarding their SC P-900 printer. It does NOT have a sensor for Over Head Transparency film. The only way it works, is what I have been doing which is gluing a strip of paper to the first feed end.

I am trying to print 16” wide image on a 17” roll, it will only print 13” of the 16” image… it cuts it off.

Is anyone using a different Transparency other than Pictorico that works?

After I find a workaround for this, I will call the manufacturers to see if they know how to deal with this problem.

The printer is great… but NOT for vellum or transparency films.



Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Jul 31, 2021, at 3:59 PM, Carlos Alejandro, <carlos@...> wrote:

Thank you, Debbie! I will try that. I am about to print a show in multiple media and am kind of dreading the “fun” of this aspect.



Carlos

[iPhone]


On Jul 31, 2021, at 3:49 PM, Debbie Warren, <dmw0529@...> wrote:

Hi Carlos, I had some similar problems with my P800, and Epson essentially said I was using an unapproved paper. My 2880 worked perfectly. Finally I spoke with someone in the wide format group and they were very helpful. They replaced my printer and I haven’t had any further issues after several years. They said to always ask to speak to someone in the pro/wide format area. Just FYI in case you haven’t tried that route yet. Good luck. 

Debbie

...,poorly typed with often unintelligible word substitutions. 

On Jul 31, 2021, at 3:34 PM, Carlos Alejandro, <carlos@...> wrote:

I have had so many problems with the P900 with pictórico and vellum. Epson replaced my first machine saying they’ve never had the problem. Second machine is the same. Works for a while… out of the box… then paper jam… and there is no paper jam. Doesn’t recognize material. I ended spray mounting a 2” strip to the vellum and then it worked. I never had this problem with my R2880. Epson basically blew me off.



Carlos

[iPhone]


On Jul 31, 2021, at 2:31 PM, ender100 via groups.io <Ender100@...> wrote:

No. Even if it is an issue there are fixes for it

Best Wishes,
Mark Nelson


Curve Calculator III for the Mac is Now Available

sent from my iPhonetypeDeviceThingy

On Jul 31, 2021, at 1:12 PM, Peter Frandsen <johngray571@...> wrote:


Not sure. The info I found was vague. It sounded like the printer didn't recognize the transparency film as a medium. Have you heard
of this kind of problem with an Epson P700? 

Thanks,

Peter




Re: Printing digital negatives with Epson SureColor P700?

Roberto Aguilar
 

Hi Carlos,
Are you printing with PRINTOOL?  If so, try setting the print size to 16.8 inches instead of 17 inches.  I had the same thing happen on my P800

Let me know

Roberto
https://rjprintlab.com

On Thursday, September 2, 2021, 04:08:27 PM GMT+1, Carlos Alejandro, <carlos@...> wrote:


I appreciate any thoughts, suggestions, recommendations.

I am printing on a 17” wide roll and the image is only printing 13” of the 16” that are in the file. 

I flopped the image and it just printed the other side.

I glued strips of paper on both sides and on the feed end and it did the same thing.

Thanks for any tips.


Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Sep 2, 2021, at 11:02 AM, Carlos Alejandro, <carlos@...> wrote:

Hi.
 Currently I am using Epson Archival Matte Paper because it needs matt ink not glossy to print.

And Standard 1440 8bit


Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Sep 2, 2021, at 10:51 AM, ender100 via groups.io <Ender100@...> wrote:

Carlos, 

I know three people with Epson P900’s printing on Pictorico with no problem.  

What is happening on your printer?  What media setting are you using?

Best Wishes,
Mark Nelson


Curve Calculator III for the Mac is Now Available

sent from my iPhonetypeDeviceThingy

On Sep 2, 2021, at 9:34 AM, Carlos Alejandro, <carlos@...> wrote:

Hi all,

I just got off the phone with Epson regarding their SC P-900 printer. It does NOT have a sensor for Over Head Transparency film. The only way it works, is what I have been doing which is gluing a strip of paper to the first feed end.

I am trying to print 16” wide image on a 17” roll, it will only print 13” of the 16” image… it cuts it off.

Is anyone using a different Transparency other than Pictorico that works?

After I find a workaround for this, I will call the manufacturers to see if they know how to deal with this problem.

The printer is great… but NOT for vellum or transparency films.



Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Jul 31, 2021, at 3:59 PM, Carlos Alejandro, <carlos@...> wrote:

Thank you, Debbie! I will try that. I am about to print a show in multiple media and am kind of dreading the “fun” of this aspect.



Carlos

[iPhone]


On Jul 31, 2021, at 3:49 PM, Debbie Warren, <dmw0529@...> wrote:

Hi Carlos, I had some similar problems with my P800, and Epson essentially said I was using an unapproved paper. My 2880 worked perfectly. Finally I spoke with someone in the wide format group and they were very helpful. They replaced my printer and I haven’t had any further issues after several years. They said to always ask to speak to someone in the pro/wide format area. Just FYI in case you haven’t tried that route yet. Good luck. 

Debbie

...,poorly typed with often unintelligible word substitutions. 

On Jul 31, 2021, at 3:34 PM, Carlos Alejandro, <carlos@...> wrote:

I have had so many problems with the P900 with pictórico and vellum. Epson replaced my first machine saying they’ve never had the problem. Second machine is the same. Works for a while… out of the box… then paper jam… and there is no paper jam. Doesn’t recognize material. I ended spray mounting a 2” strip to the vellum and then it worked. I never had this problem with my R2880. Epson basically blew me off.



Carlos

[iPhone]


On Jul 31, 2021, at 2:31 PM, ender100 via groups.io <Ender100@...> wrote:

No. Even if it is an issue there are fixes for it

Best Wishes,
Mark Nelson


Curve Calculator III for the Mac is Now Available

sent from my iPhonetypeDeviceThingy

On Jul 31, 2021, at 1:12 PM, Peter Frandsen <johngray571@...> wrote:


Not sure. The info I found was vague. It sounded like the printer didn't recognize the transparency film as a medium. Have you heard
of this kind of problem with an Epson P700? 

Thanks,

Peter




Re: Printing digital negatives with Epson SureColor P700?

Carlos Alejandro,
 

I appreciate any thoughts, suggestions, recommendations.

I am printing on a 17” wide roll and the image is only printing 13” of the 16” that are in the file. 

I flopped the image and it just printed the other side.

I glued strips of paper on both sides and on the feed end and it did the same thing.

Thanks for any tips.


Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Sep 2, 2021, at 11:02 AM, Carlos Alejandro, <carlos@...> wrote:

Hi.
 Currently I am using Epson Archival Matte Paper because it needs matt ink not glossy to print.

And Standard 1440 8bit


Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Sep 2, 2021, at 10:51 AM, ender100 via groups.io <Ender100@...> wrote:

Carlos, 

I know three people with Epson P900’s printing on Pictorico with no problem.  

What is happening on your printer?  What media setting are you using?

Best Wishes,
Mark Nelson


Curve Calculator III for the Mac is Now Available

sent from my iPhonetypeDeviceThingy

On Sep 2, 2021, at 9:34 AM, Carlos Alejandro, <carlos@...> wrote:

Hi all,

I just got off the phone with Epson regarding their SC P-900 printer. It does NOT have a sensor for Over Head Transparency film. The only way it works, is what I have been doing which is gluing a strip of paper to the first feed end.

I am trying to print 16” wide image on a 17” roll, it will only print 13” of the 16” image… it cuts it off.

Is anyone using a different Transparency other than Pictorico that works?

After I find a workaround for this, I will call the manufacturers to see if they know how to deal with this problem.

The printer is great… but NOT for vellum or transparency films.



Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Jul 31, 2021, at 3:59 PM, Carlos Alejandro, <carlos@...> wrote:

Thank you, Debbie! I will try that. I am about to print a show in multiple media and am kind of dreading the “fun” of this aspect.



Carlos

[iPhone]


On Jul 31, 2021, at 3:49 PM, Debbie Warren, <dmw0529@...> wrote:

Hi Carlos, I had some similar problems with my P800, and Epson essentially said I was using an unapproved paper. My 2880 worked perfectly. Finally I spoke with someone in the wide format group and they were very helpful. They replaced my printer and I haven’t had any further issues after several years. They said to always ask to speak to someone in the pro/wide format area. Just FYI in case you haven’t tried that route yet. Good luck. 

Debbie

...,poorly typed with often unintelligible word substitutions. 

On Jul 31, 2021, at 3:34 PM, Carlos Alejandro, <carlos@...> wrote:

I have had so many problems with the P900 with pictórico and vellum. Epson replaced my first machine saying they’ve never had the problem. Second machine is the same. Works for a while… out of the box… then paper jam… and there is no paper jam. Doesn’t recognize material. I ended spray mounting a 2” strip to the vellum and then it worked. I never had this problem with my R2880. Epson basically blew me off.



Carlos

[iPhone]


On Jul 31, 2021, at 2:31 PM, ender100 via groups.io <Ender100@...> wrote:

No. Even if it is an issue there are fixes for it

Best Wishes,
Mark Nelson


Curve Calculator III for the Mac is Now Available

sent from my iPhonetypeDeviceThingy

On Jul 31, 2021, at 1:12 PM, Peter Frandsen <johngray571@...> wrote:


Not sure. The info I found was vague. It sounded like the printer didn't recognize the transparency film as a medium. Have you heard
of this kind of problem with an Epson P700? 

Thanks,

Peter




Re: Printing digital negatives with Epson SureColor P700?

Carlos Alejandro,
 

Hi.
 Currently I am using Epson Archival Matte Paper because it needs matt ink not glossy to print.

And Standard 1440 8bit


Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Sep 2, 2021, at 10:51 AM, ender100 via groups.io <Ender100@...> wrote:

Carlos, 

I know three people with Epson P900’s printing on Pictorico with no problem.  

What is happening on your printer?  What media setting are you using?

Best Wishes,
Mark Nelson


Curve Calculator III for the Mac is Now Available

sent from my iPhonetypeDeviceThingy

On Sep 2, 2021, at 9:34 AM, Carlos Alejandro, <carlos@...> wrote:

Hi all,

I just got off the phone with Epson regarding their SC P-900 printer. It does NOT have a sensor for Over Head Transparency film. The only way it works, is what I have been doing which is gluing a strip of paper to the first feed end.

I am trying to print 16” wide image on a 17” roll, it will only print 13” of the 16” image… it cuts it off.

Is anyone using a different Transparency other than Pictorico that works?

After I find a workaround for this, I will call the manufacturers to see if they know how to deal with this problem.

The printer is great… but NOT for vellum or transparency films.



Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Jul 31, 2021, at 3:59 PM, Carlos Alejandro, <carlos@...> wrote:

Thank you, Debbie! I will try that. I am about to print a show in multiple media and am kind of dreading the “fun” of this aspect.



Carlos

[iPhone]


On Jul 31, 2021, at 3:49 PM, Debbie Warren, <dmw0529@...> wrote:

Hi Carlos, I had some similar problems with my P800, and Epson essentially said I was using an unapproved paper. My 2880 worked perfectly. Finally I spoke with someone in the wide format group and they were very helpful. They replaced my printer and I haven’t had any further issues after several years. They said to always ask to speak to someone in the pro/wide format area. Just FYI in case you haven’t tried that route yet. Good luck. 

Debbie

...,poorly typed with often unintelligible word substitutions. 

On Jul 31, 2021, at 3:34 PM, Carlos Alejandro, <carlos@...> wrote:

I have had so many problems with the P900 with pictórico and vellum. Epson replaced my first machine saying they’ve never had the problem. Second machine is the same. Works for a while… out of the box… then paper jam… and there is no paper jam. Doesn’t recognize material. I ended spray mounting a 2” strip to the vellum and then it worked. I never had this problem with my R2880. Epson basically blew me off.



Carlos

[iPhone]


On Jul 31, 2021, at 2:31 PM, ender100 via groups.io <Ender100@...> wrote:

No. Even if it is an issue there are fixes for it

Best Wishes,
Mark Nelson


Curve Calculator III for the Mac is Now Available

sent from my iPhonetypeDeviceThingy

On Jul 31, 2021, at 1:12 PM, Peter Frandsen <johngray571@...> wrote:


Not sure. The info I found was vague. It sounded like the printer didn't recognize the transparency film as a medium. Have you heard
of this kind of problem with an Epson P700? 

Thanks,

Peter



Re: Printing digital negatives with Epson SureColor P700?

ender100
 

Carlos, 

I know three people with Epson P900’s printing on Pictorico with no problem.  

What is happening on your printer?  What media setting are you using?

Best Wishes,
Mark Nelson

www.PrecisionDigitalNegatives.com
www.MarkINelsonPhoto.com

Curve Calculator III for the Mac is Now Available

sent from my iPhonetypeDeviceThingy

On Sep 2, 2021, at 9:34 AM, Carlos Alejandro, <carlos@...> wrote:

Hi all,

I just got off the phone with Epson regarding their SC P-900 printer. It does NOT have a sensor for Over Head Transparency film. The only way it works, is what I have been doing which is gluing a strip of paper to the first feed end.

I am trying to print 16” wide image on a 17” roll, it will only print 13” of the 16” image… it cuts it off.

Is anyone using a different Transparency other than Pictorico that works?

After I find a workaround for this, I will call the manufacturers to see if they know how to deal with this problem.

The printer is great… but NOT for vellum or transparency films.



Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Jul 31, 2021, at 3:59 PM, Carlos Alejandro, <carlos@...> wrote:

Thank you, Debbie! I will try that. I am about to print a show in multiple media and am kind of dreading the “fun” of this aspect.



Carlos

[iPhone]


On Jul 31, 2021, at 3:49 PM, Debbie Warren, <dmw0529@...> wrote:

Hi Carlos, I had some similar problems with my P800, and Epson essentially said I was using an unapproved paper. My 2880 worked perfectly. Finally I spoke with someone in the wide format group and they were very helpful. They replaced my printer and I haven’t had any further issues after several years. They said to always ask to speak to someone in the pro/wide format area. Just FYI in case you haven’t tried that route yet. Good luck. 

Debbie

...,poorly typed with often unintelligible word substitutions. 

On Jul 31, 2021, at 3:34 PM, Carlos Alejandro, <carlos@...> wrote:

I have had so many problems with the P900 with pictórico and vellum. Epson replaced my first machine saying they’ve never had the problem. Second machine is the same. Works for a while… out of the box… then paper jam… and there is no paper jam. Doesn’t recognize material. I ended spray mounting a 2” strip to the vellum and then it worked. I never had this problem with my R2880. Epson basically blew me off.



Carlos

[iPhone]


On Jul 31, 2021, at 2:31 PM, ender100 via groups.io <Ender100@...> wrote:

No. Even if it is an issue there are fixes for it

Best Wishes,
Mark Nelson


Curve Calculator III for the Mac is Now Available

sent from my iPhonetypeDeviceThingy

On Jul 31, 2021, at 1:12 PM, Peter Frandsen <johngray571@...> wrote:


Not sure. The info I found was vague. It sounded like the printer didn't recognize the transparency film as a medium. Have you heard
of this kind of problem with an Epson P700? 

Thanks,

Peter


Re: Printing digital negatives with Epson SureColor P700?

Carlos Alejandro,
 

Hi all,

I just got off the phone with Epson regarding their SC P-900 printer. It does NOT have a sensor for Over Head Transparency film. The only way it works, is what I have been doing which is gluing a strip of paper to the first feed end.

I am trying to print 16” wide image on a 17” roll, it will only print 13” of the 16” image… it cuts it off.

Is anyone using a different Transparency other than Pictorico that works?

After I find a workaround for this, I will call the manufacturers to see if they know how to deal with this problem.

The printer is great… but NOT for vellum or transparency films.



Thanks,

Carlos

Carlos Alejandro Photography
w 302.234.1100
m 302.547.7799
www.caphoto.com



On Jul 31, 2021, at 3:59 PM, Carlos Alejandro, <carlos@...> wrote:

Thank you, Debbie! I will try that. I am about to print a show in multiple media and am kind of dreading the “fun” of this aspect.



Carlos

[iPhone]


On Jul 31, 2021, at 3:49 PM, Debbie Warren, <dmw0529@...> wrote:

Hi Carlos, I had some similar problems with my P800, and Epson essentially said I was using an unapproved paper. My 2880 worked perfectly. Finally I spoke with someone in the wide format group and they were very helpful. They replaced my printer and I haven’t had any further issues after several years. They said to always ask to speak to someone in the pro/wide format area. Just FYI in case you haven’t tried that route yet. Good luck. 

Debbie

...,poorly typed with often unintelligible word substitutions. 

On Jul 31, 2021, at 3:34 PM, Carlos Alejandro, <carlos@...> wrote:

I have had so many problems with the P900 with pictórico and vellum. Epson replaced my first machine saying they’ve never had the problem. Second machine is the same. Works for a while… out of the box… then paper jam… and there is no paper jam. Doesn’t recognize material. I ended spray mounting a 2” strip to the vellum and then it worked. I never had this problem with my R2880. Epson basically blew me off.



Carlos

[iPhone]


On Jul 31, 2021, at 2:31 PM, ender100 via groups.io <Ender100@...> wrote:

No. Even if it is an issue there are fixes for it

Best Wishes,
Mark Nelson


Curve Calculator III for the Mac is Now Available

sent from my iPhonetypeDeviceThingy

On Jul 31, 2021, at 1:12 PM, Peter Frandsen <johngray571@...> wrote:


Not sure. The info I found was vague. It sounded like the printer didn't recognize the transparency film as a medium. Have you heard
of this kind of problem with an Epson P700? 

Thanks,

Peter


Re: Gum Bichromate on Mirror Back #bichromate #glass

Niranjan Patel
 

You are welcome, Logan.  It's easy for us to throw out ideas from an armchair.  Hard part is to make it work.  Please do share the outcome of your efforts.

:Niranjan.


Re: Gum Bichromate on Mirror Back #bichromate #glass

Pfriedrichsen
 

This might explain why the hydrochloric acid was attacking the mirroring. HCl attacks aluminum easily.

As Niranjan mentioned, maybe work in reverse. There are numerous silvering solutions that can be made up and applied after the resist.

On Aug 31, 2021, at 2:03 PM, Richard Sullivan <sullivan8486@...> wrote:


Be aware that most modern mirrors are aluminum, not silver.

--Dick Sullivan

On Mon, Aug 30, 2021 at 11:41 AM Pfriedrichsen <pfriedrichsen@...> wrote:
Hi Logan, 

If you do go this route, I hope you will be able to get the gum to stick. Mirrored silver does not have much to offer for adhesion. Gum hardens from the top down, so at best and assuming you get any adhesion at all, you will have no grey scale if that is a concern.

For acid etch, maybe nitric acid as etchant but a safety risk there with nitrogen dioxide and the nitric fumes. Maybe there is a safer etchant, and not sure if the hardened gum would hold up to something so aggressive. 

Its a challenge for sure!
Peter

On Aug 30, 2021, at 1:19 PM, LoganCThomas <logancthomas@...> wrote:

 Thanks!

Yes you’re right in your interpretation - when writing I didn’t notice the double meaning of “expose” given our context.

I actually would prefer the shadows to be transparent to the viewer (as in being able to look straight through the glass in shadow areas). I don’t intend to use any watercolour pigments in this case. Only using the reflective film of the back of the mirror as my “pigment”.

I’m not sure, but I think your suggestions of using a metal plate and glass plate, and the daguerreotype wouldn’t allow for the transparency I’m looking for.

Do you know of a material that would help me work with the metal film at the back of the mirror? 

Thanks for your help! 

On 30 Aug 2021, at 10:51, Jeremy Moore <alt.photosbyjeremy@...> wrote:


Welcome to the list, Logan!

I need some help understanding as I think my photo brain keeps getting confused because “expose the metal film” just means “reveal the metal film”, right? 

Regardless, it sounds like want watercolor pigment for shadows and reflective metal highlights. Are you after the final look or is the process you’ve described essential to your work?

It seems simpler to start with the reflective metal and glass as 2 separate pieces than a finished mirror you have to take apart and put back together. Is there a reason you’re deconstructing a mirror instead of making one?

Also, have you thought of printing a daguerreotype then trying gum on top? That would give mirrored highlights.

Jeremy@...


On Mon, Aug 30, 2021 at 9:28 AM LoganCThomas <logancthomas@...> wrote:

Hi All, 

I’m new to this forum, and am trying to figure out the best approach to do the following:

My intention is to remove the protective layer on the back of a mirror, to expose the metal film, and then print a gum bichromate positive image (digital negative) on that metal film with the intent of using an acid etch to remove the “shadows”, or the spots that were not exposed. The idea is to produce an intentionally ‘antiqued’ mirror-print. Where the highlights of my image would be the reflective mirror, and the shadows would be filled in using a paint/material of choice. 


Does anyone have experience doing this? Or have any guidance as to how it might be achieved? 

--
Sent from a mobile device.


Re: Gum Bichromate on Mirror Back #bichromate #glass

LoganCThomas
 

Thank you Niranjan, that’s not a bad idea at all. of all the possibilities this might be the most accessible to me at this point. 

Best Wishes, 

Logan


On Aug 31, 2021, at 1:04 PM, Niranjan Patel via groups.io <nirpat89@...> wrote:

On a second thought, isn't the final product in the original idea pretty much equivalent to an orotone - the difference being the order and the type of metallization.  So why not simply make the gum image layer first which can be followed by mirror formation (or tp make it easy, coating a silver paint) instead of dealing with all the subtractive steps involved when starting with a mirror. 

:Niranjan.

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