Digital negatives

[ali_soylu]

I'm experimenting with digital negatives for gum printing. To see the

range of contrast I can get, I printer out a gradient, from 100% black

to 0%, and contact printed that. I did not get much tonal range in the

print. (<a href=http://alisoylu.no-ip.com/photo/gum/wedge.jpg><b>see

image here</b></font></a> ) (My 4x5 BW negative prints have a good

tonal range) Then I trid printing from a digital negative with 25% to

75% gray in it, and could not get a decent photo at all. (<a

href=http://alisoylu.no-ip.com/photo/gum/pic.jpg><b>see image

here</b></a> [vertical lines from wrinkles]) Do you think this is due

to my printer? I'm using an epson Stylus CX6400 and Epson transparencies.

[ali_soylu]

Here are the images in line:<br>

 

<img src=http://alisoylu.no-ip.com/photo/gum/wedge.jpg><br><br>

 

<img src=http://alisoylu.no-ip.com/photo/gum/pic.jpg>

[robert_herz]

Hello Ali,

it looks like that you have a too high density on your "negatives". A way to work around is, to use a laser printer. They work different in the way the achieve gray. It is the density of single little black spots, but there is always a space between where the light can pass. It works excellent for my cyanos.

Best regards

Robert

[ali_soylu]

Thanks for your response Robert. What kind of laser printer do you use? What dpi? I will give it a try.

 

Thanks,

ALi

[robert_herz]

Hello Ali,

it is a HP LaserJet 1000 at 600 dpi.

But it schuld work with every 600 dpi laser printer.

Best regards

Robert