Ad
Ad
Ad
Pages: [1]   Bottom of Page
Print
Author Topic: Printing on Black Paper  (Read 856 times)
kencameron
Sr. Member
****
Offline Offline

Posts: 669



WWW
« on: May 10, 2013, 10:03:10 PM »
ReplyReply

Has anyone tried it? Tips and tricks?

I did a forum search but it came up with 40 pages and nothing on the first 3 was remotely relevant, so apologies if there it has already been covered.
Logged

aaronchan
Sr. Member
****
Offline Offline

Posts: 310


« Reply #1 on: May 10, 2013, 10:56:34 PM »
ReplyReply

you need white ink to print on black paper
Logged
David Sutton
Sr. Member
****
Offline Offline

Posts: 898


WWW
« Reply #2 on: May 10, 2013, 10:58:13 PM »
ReplyReply

What Aaronchan said. I tried it and saw nothing on the paper.
Logged

deanwork
Sr. Member
****
Offline Offline

Posts: 722


« Reply #3 on: May 11, 2013, 01:03:45 PM »
ReplyReply

Why can't you print with light gray?
Logged
framah
Sr. Member
****
Offline Offline

Posts: 1201



« Reply #4 on: May 11, 2013, 03:26:17 PM »
ReplyReply

Because you need the white between the dots for it to work.
Logged

"It took a  lifetime of suffering and personal sacrifice to develop my keen aesthetic sense."
Bob Smith
Jr. Member
**
Offline Offline

Posts: 83


WWW
« Reply #5 on: May 11, 2013, 03:40:24 PM »
ReplyReply

you need something like an Epson WT7900.  Its essentially a white ink capable 7900 designed for proofing in the packaging market.  Kind of pricy as its a very special purpose thing...
Logged

tsapiano
Newbie
*
Offline Offline

Posts: 22


WWW
« Reply #6 on: May 11, 2013, 03:46:44 PM »
ReplyReply

Why can't you print with light gray?

Inks typically work in a subtractive manner rather than an additive one.  That is, an ink simply acts as a filter - absorbing wavelengths outside of the desired colour but depending on the underlying paper to actually reflect the remaining light.  Light grey ink isn't a mixture of white and black, it's simply a black ink with a lower density so it absorbs less light passing through it (ie effectively a semi-transparent black).

A black paper will absorb most of the light hitting it's surface, so there isn't enough light passing through the ink for you to see any descernable colour.  In order to print on a black paper, the printer would need to be able to lay down a white (ie reflective) undercoat on any areas that weren't black so that enough light was reflected for the rest of the inks to function.

Logged
kencameron
Sr. Member
****
Offline Offline

Posts: 669



WWW
« Reply #7 on: May 11, 2013, 05:32:43 PM »
ReplyReply

Inks typically work in a subtractive manner rather than an additive one.  That is, an ink simply acts as a filter - absorbing wavelengths outside of the desired colour but depending on the underlying paper to actually reflect the remaining light.  Light grey ink isn't a mixture of white and black, it's simply a black ink with a lower density so it absorbs less light passing through it (ie effectively a semi-transparent black).

A black paper will absorb most of the light hitting it's surface, so there isn't enough light passing through the ink for you to see any descernable colour.  In order to print on a black paper, the printer would need to be able to lay down a white (ie reflective) undercoat on any areas that weren't black so that enough light was reflected for the rest of the inks to function.
Thanks (and to everyone else). This plausibly explains the results of the experiments I have conducted since starting the thread  Wink
Logged

Pages: [1]   Top of Page
Print
Jump to:  

Ad
Ad
Ad