[Bug 6997] New: [FO2.0Req] Print specific properties - Halftone Screening Info

[b***@wiggum.w3.org]

http://www.w3.org/Bugs/Public/show_bug.cgi?id=6997

Summary: [FO2.0Req] Print specific properties - Halftone
Screening Info
Product: XSLFO
Version: 2.0 Working Draft
Platform: PC
OS/Version: Windows XP
Status: NEW
Severity: normal
Priority: P2
Component: XSL-FO Requirements
AssignedTo: xsl-***@w3.org
ReportedBy: ***@tiscali.cz
QAContact: xsl-***@w3.org


In Chapter 8.3 of XSL 2.0 requirements there is list with several print
specific properties. I would add there also screening info, which could be
applied to every block element. Specification could be similar to PDF reference
at http://www.adobe.com/devnet/acrobat/pdfs/pdf_reference_1-7.pdf
(Chapter 6.4) and also Named Halftone dictionaries could be supported. Later
mentioned are described in section 6.4.4 (p.496): "Halftone dictionaries have
an optional entry, HalftoneName, that identifies the halftone by name."

Such information could be transferred into PDF file and if such file would be
processed for offset printing on modern CTP devices, every object could be
rasterized with different settings which could even allow to combine halftone
and stochastic screening on single plate and significantly improve final
quality (for specific jobs).