[IPP] WG Last Call - IPP Job and Printer Extensions - Set 3 (JPS3)(April 9 through April 18, 2012)

[IPP] WG Last Call - IPP Job and Printer Extensions - Set 3 (JPS3)(April 9 through April 18, 2012)

Michael Sweet msweet at apple.com
Fri Apr 20 16:37:19 UTC 2012


Glen,

On Apr 20, 2012, at 8:04 AM, Petrie, Glen wrote:
> Monochrome is defined as "the range of shades of a single Color to
> white" and not a single colorant and not just black.

As defined in JPS3, monochrome is output using a single colorant. This was the definition that everyone agreed to 2 years ago after hours of discussion at the December 2010 F2F.

"process-monochrome" was added at that meeting to address the many use cases where a vendor might want to use multiple colorants to produce a single color - typically black but it could be any color/effect.

Further definition/clarification about halftoning and continuous tone printing was deemed too implementation-specific to be added - the compromise was to add bi-level and process-bi-level for threshold output with monochrome and process-monochrome mapping to grayscale/shaded output.

_________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair


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