RE: File Preparation for 4 color Grayscale offset printing
RE: File Preparation for 4 color Grayscale offset printing
- Subject: RE: File Preparation for 4 color Grayscale offset printing
- From: "Richard Booth" <email@hidden>
- Date: Tue, 6 Nov 2007 14:11:56 -0500
- Thread-topic: File Preparation for 4 color Grayscale offset printing
To minimize the possibility of casting on press due to the CM and Y inking variations, this is the approach we have used, based on recommendations from both our magazine and book printers. It has worked well.
1. Convert the image to greyscale if it isnt already.
2. Correct for full tone range- highlight, shadow and midtones (2%-3% highlight to 96%-97% shadow).
3.Build a new 4/c starting with the greyscale file being used for the K channel.
4. Dupe the K channel for the C, M and Y channels and apply the range limitations. Come in with the three color when black values hit 35% and run them to 60% in the shadows. You may want to run a little higher than 60% if you think the press and paper can handle a higher max total ink. Check with your printer. To keep the black neutral, the Cyan should have a little higher density than the M & Y. Some thing like 4C 2M 2Y or 48C 40M 40Y depending what tone range you are in.
The idea here is make the K do the heavy lifting especially in the lighter areas where variations in the press inking of CM and Y would be more visible.
Hope this helps
Richard Booth
-----Original Message-----
From: Vanita Cyril [mailto:email@hidden]
Sent: Tue 11/6/2007 11:58 AM
To: Vanita Cyril
Cc: Richard Booth; email@hidden
Subject: Re: File Preparation for 4 color Grayscale offset printing
Afterthought:
Would a higher total ink be of any help in avoiding the image going
flat?
Vanita Cyril
....................................
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden