Xerox Corporation

Susan Evans

David E Rumph

Jindong Chen

Ammar T Degani

Terry C Wells

W Dale Knutsen

A method and system to print selective pages of color images within a print job having a plurality of pages using selected color improvement options such as black overprint, anti-aliasing, and trapping. The system identifies and selects one or more pages within a single print job having a set of a plurality of pages and is able to apply a plurality of different color improvement operations upon printing pages having color images thereon. A user interface enables the assigning of a first color improvement operation to a first subset of pages within the single print job. A processor determines if the page being processed is a member of the first subset of pages that have the first color improvement assigned thereto and performs the first color improvement operation upon the image data associated with the page when it determines that the page being processed is a member of the first subset of pages that have the first color improvement assigned thereto.

Method and system for applying black overprint, anti-aliasing, and trapping on a page basis

A method of determining whether a page to be printed on a color printer will actually be entirely printed in one colorant, usually black, and if so, automatically omitting whatever processing steps are unnecessary as a result. Determining if the page is monochrome can be done either by (1) including a signal in the PDL or by a signal from the user or by (2) inspecting each element of the page to determine if all elements are specified to be printed in the same one colorant. If either is true, then various color operations such as trapping, color conversion to any other color, and color correction for non-selected colors can be automatically omitted.

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California City, CA, United States of America

Susan Evans