Thanks Mike. Fortunately Google-Fu is my superpower, so have turned up some interesting things to investigate. The idea of layering two less dense laser transparencies (carefully registering them) opens up some possibilities (although the downside is using obviously more transparency material). I may have to experiment!
On Sun, Mar 6, 2016 at 12:30 PM, mike wilson <[email protected]> wrote: > Urgh... you're asking me to _remember_ something? > > It's a very long time ago but I think I used one of the "artistic" filters in > PS > to pick up the edges of an image, turned that into a negative as it made the > edges light against a black background before reversal, and then printed that > onto the film. This gave a predominantly blue background with a white image. > It was only for a class on photochemistry, so the quality of the image wasn't > important to anyone but me. Quite a bit of experimentation was needed with > exposure. There was almost no consistency between images made with the same > negative, due to the handmade nature of the substrate. > >> On 06 March 2016 at 18:07 Darren Addy <[email protected]> wrote: >> >> >> Mike, >> I'd love to have some links on how to do digital negatives for >> cyanotypes on LASER printers. Didn't know that was possible. I've got >> access to good laser printers at work (including a copier that can do >> 11x17) and I've got a Liquid Cyanotype kit from Photographer's >> Formulary sitting here itching to do some watercolor paper cyanotypes >> of a particular digital image that I have. I've got a pack of >> transparency material also. >> >> Thanks in advance! >> >> On Sun, Mar 6, 2016 at 11:49 AM, mike wilson <[email protected]> wrote: >> >> On 06 March 2016 at 17:40 Darren Addy <[email protected]> wrote: >> >> >> >> >> >> I tend to agree with you Mike. >> >> With the prices at places like sharpprints.com I find it hard to >> >> justify the expense of an inkjet. In many cases you are going to have >> >> to gamble on $100 or more for a set of ink just to see what you've >> >> got. I'm in that position right now with an old Epson R800. It was >> >> given to me and I assume there will be heads clogged (which is why I'm >> >> researching). I'm mostly interested in using it to print on overhead >> >> transparency material to make digital negatives for contact >> >> printing/alternative processing. I think I remember seeing a process >> >> that will allow you to use only three black/grey inks (that you can >> >> put in any three working positions on your printer (forget the clogged >> >> ones)... so may try that approach if I can't get all of them >> >> unplugged. >> > >> > That sounds interesting. I've used laser printed ones to make negs for >> > cyanotypes. Keeping us informed of progress would be appreciated, at least >> > by >> > me. >> > >> >> >> >> If I can learn the transparency digital negative technique, I might >> >> think about a wide format printer for the same purpose, down the road. >> >> >> >> On Sun, Mar 6, 2016 at 11:30 AM, mike wilson <[email protected]> >> >> wrote: >> >> >> On 06 March 2016 at 01:08 Darren Addy <[email protected]> wrote: >> >> >> >> >> >> >> >> >> This is a side discussion to Ann's purchase of a lightly used R2400. I >> >> >> agreed with Mike Wilson's caution, but not necessarily his view of >> >> >> "Irrecoverably". Using Epson's print head cleaning utility is >> >> >> guaranteed to use up a lot of ink, if not actually unclog the print >> >> >> head. >> >> >> >> >> >> I like (much better) this guy's tutorial: >> >> >> https://www.youtube.com/watch?v=_1hxljJhi9M >> >> >> His use of aquarium pump tubing as a reservoir/sight glass is >> >> >> ingenious. >> >> >> Also worthwhile is his formula for DIY Inkjet print head cleaner: >> >> >> https://www.youtube.com/watch?v=DHUQAZFdTOM >> >> >> >> >> >> With these techniques in your pocket you may find a real bargain out >> >> >> there, even if the printer doesn't work perfectly when you purchase >> >> >> it. >> >> > >> >> > I can only go by my own experience. Two very expensive printers (and a >> >> > cheaper >> >> > one) failed due to head clogging that Epson's procedures would not >> >> > clear. >> >> > Having access to a large variety of chemicals, I used internet >> >> > knowledge >> >> > to >> >> > try >> >> > a number of different options. No success. Finally, for the last >> >> > machine, >> >> > I >> >> > found a recently damaged one that had a good head. Over a week, I >> >> > swapped >> >> > the >> >> > head only to find that Epson has the neat little trick of killing the >> >> > printer if >> >> > you access the head. This can only be fixed by some firmware kludge >> >> > that >> >> > only >> >> > Epson engineers know. I couldn't find it on the internet. So I then >> >> > had >> >> > the >> >> > choice of paying about 2/3rds of the new cost for Epson to replace the >> >> > head >> >> > (no >> >> > nearby agent, of course) or walking away. It was one of the best walks >> >> > of >> >> > my >> >> > life. >> >> > >> >> > In my ever so humble opinion, inkjet printers are the spawn of the devil >> >> > and >> >> > the >> >> > fact that they print anything at all is nothing short of a miracle. >> >> > >> >> > -- >> >> > PDML Pentax-Discuss Mail List >> >> > [email protected] >> >> > http://pdml.net/mailman/listinfo/pdml_pdml.net >> >> > to UNSUBSCRIBE from the PDML, please visit the link directly above and >> >> > follow the directions. >> >> >> >> >> >> >> >> -- >> >> “The Earth is Art, The Photographer is only a Witness ” >> >> ― Yann Arthus-Bertrand, Earth from Above >> >> >> >> -- >> >> PDML Pentax-Discuss Mail List >> >> [email protected] >> >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> >> follow >> >> the directions. >> > >> > -- >> > PDML Pentax-Discuss Mail List >> > [email protected] >> > http://pdml.net/mailman/listinfo/pdml_pdml.net >> > to UNSUBSCRIBE from the PDML, please visit the link directly above and >> > follow the directions. >> >> >> >> -- >> “The Earth is Art, The Photographer is only a Witness ” >> ― Yann Arthus-Bertrand, Earth from Above >> >> -- >> PDML Pentax-Discuss Mail List >> [email protected] >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and follow >> the directions. > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- “The Earth is Art, The Photographer is only a Witness ” ― Yann Arthus-Bertrand, Earth from Above -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
