Xerox Corporation

Randall P Cole

Kurt T Knodt

Herbert J Raymor

Gerald L Coy

John F Gauronski

James R Graves

Robert Roy Buckley

David E Crocker

Martin A Leisner

Simon J Barnett

Frank J Denunzio

K U Filomena

Undercolor reduction is performed to a color image that is to be marked to reduce an amount of marking material used to mark underlying colors in overmarked pixels where a top color is marked over at least one underlying color. Information is generated to designate the overmarked pixels. This information may be generated as tags. A raster image is created in which both the underlying and top colors are included in the overmarked pixels. The image data of the raster image is modified such that an amount of marking material used to mark the at least one underlying color in each overmarked pixel is reduced.

Methods and systems for undercolor reduction

An operator of a printer may choose a maximum decomposition time for a page of a print job. Each page in the print job must fully decompose before the maximum decomposition time is reached. If a page does not fully decompose before the maximum decomposition time is reached, the print job may be terminated. In addition, a notification may be generated advising the operator that a page of the print job did not fully compose before the maximum decomposition time was reached. The establishment of maximum decomposition times helps to ensure that a single print job does not monopolize a printer or other output device.

Limiting decomposition time on a per page basis for output devices

An automatic document imaging mode selection system in a system for generating electronic images of documents, in which documents may be variously fed or registered on a document imaging platen with a plural mode automatic document handling system. Various document handling and/or image scanning modes of operation are automatically selected from among various available potential such modes by accessing various document handling status information and/or sensor inputs, and coordinating that information to automatically select an optimum such mode where the operator has not specifically selected a mode. This may further include automatically determining whether or not to conduct a special pre-scan cycle before image scanning is initiated, and/or taking into consideration inferences as to whether or not the document(s) had been previously imaged. It may further or additionally include automatically changing the registration or scanning position for the particular document in accordance with the mode selection.

Automatic document imaging mode selection system

Scanner fault recovery in an electronic reprographic system includes monitoring the scanner for faults and enabling deletion from memory any images corresponding to documents involved in the scanner fault. Once the images have been deleted, refeed instructions are displayed to the operator for refeeding the documents whose images were deleted. Upon document refeed, the documents are rescanned for completion of scanning of the job.

Image deletion for improved scanner fault recovery

A method and apparatus for operating an electronic reprographic system upon detection of a fault are described. Original documents of a job to be printed are scanned to provide images for storage. When scanning is interrupted, the last captured image is stored and selectively displayed. If scanning is not completed before the interruption, the system is monitored for the occurrence of a fault before scanning is resumed. The detection of a fault occurrence requires clearance of the paper path before scanning operation can be resumed. If scanning is completed, printer operation is enabled to provide image output. Partially completed scan jobs resulting from scanner interruption are saved in operator accessible memory.

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Penfield, NY, United States of America

Randall P Cole