Lively discussions on the graphic arts and publishing — in print or on the web

Go Back   Desktop Publishing Forum > General Discussions > Print Production & Automation

Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 03-17-2006, 04:12 PM   #1
Join Date: Jan 2005
Location: North of Swindon in the UK on the edge of the Cotswolds
Posts: 997
Default Dot Gain 2

This is what I like about this site - is that it stimulates the mind.
Dot gain
I will now explain about dot gain .
Firstly dot gain can be controlled - and always has been by pre press compensating for it. The ISO standard 12647 - printing standard was never about acheiving the same tonal value regardless of screen ruling or paper type. It set out what dot gain to expect when you have a 50% digital dot on a film and your pre press company would compensate for the gain and reduce the dot accordingly.
BUT with CTP - a lot of printers have not understood the standard and dont compensate so if they print 150# 50 = 64% 175# = 67% 200# = 71% now the standard says + or - 4% so your 50% digitaol dot could end up either 60% or 75% . This really B******* up CMYK Pantone colours and images .Mid tones start filling in etc etc.
Adobe and Pantone have adopted CMY 50% = 64% K = 67% and so printeradding a compenation curve wilol achieve much better bimages and start matching Pantone Colourbridge colours.
I am sorry to get technical - Colour Management is a major issue - and perhaps this site should have a section for it.

What is really interesting is that its photographers who are really interested in this subject- as they have now been firmly included in the workflow as they cannot hide behind " bodged trannies" -
PeterArnel is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Is dot gain mainly for rasters ? CASIMIR17 Print Production & Automation 4 09-23-2006 03:04 PM
Dot Gain PeterArnel Print Production & Automation 40 08-25-2006 10:06 AM

All times are GMT -8. The time now is 11:16 AM.

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Contents copyright 2004–2019 Desktop Publishing Forum and its members.