Xerox Corporation

Scott Charles Warner

Francis Kapo Tse

Fritz F Ebner

William G Hawkins

Cathie J Burke

Thomas A Tellier

James Bruce Campbell

Alan D Raisanen

Timothy M Hunter

Jason Slack

Lee Roche

Louis Ba La

David Russel Sponable

Peter Charles Rapley

Lonnie A LaFave

Scott N Seabridge

Steve Beers

David Rivshin

Yonglin Xie

Ramesh Nagarajan

Dale R Ims

Michael P O'Horo

Eduardo Mariano Freire

Theresa Michelle Marconi

Brian Richard Caffee

A method for processing a print job includes: a) processing printer description language (PDL) image data for a select page of a print job to form raster image data for the select page, processing of the PDL image data and storing the raster image data in a RIP orientation; b) processing the raster image data for the select page to form bitmap image data for the select page, transforming the raster image data from the RIP orientation to a print orientation and storing the bitmap image data in the print orientation; and c) printing the bitmap image data arranged in the print orientation on a target substrate page to form a printed substrate page for the select page of the print job. A printing platform associated with the method includes a storage device, a RIP module, a rotator module, and a print engine.

Image rotation to optimize rip and print performance time

A method for processing a print job includes: a) analyzing printer description language (PDL) image data for a print job; b) determining a raster image processor (RIP) orientation for the print job based at least in part on the analysis of the PDL image data, the RIP orientation being selected from a landscape orientation and a portrait orientation; and c) processing the PDL image data for each page of the print job to form raster image data for each page in the RIP orientation and storing the raster image data in the RIP orientation. A printing platform associated with the method includes a parser module, a controller module, a storage device, and a RIP module.

Method and apparatus for processing print job in printing platform for determining rotation

Systems and methods are described that facilitate mitigating processor overload and reducing memory waste during image compression. Clients requesting memory allocation are assigned a direct memory access (DMA) channel to which DMA memory blocks are allocated for use during image compression. As each DMA block is used by its channel, the DMA block generates an interrupt message that is counted by a DMA counter and may be optionally processed by the CPU. If the number of interrupts being processed exceeds a first threshold, then memory block size is increased to reduce processor load. If the number of interrupts is below a second, lower threshold, then block size is decreased to reduce and amount of unused but allocated memory in the final block allocated to the channel a compressed image file. Fixed DMA block size may also be used and any DMA block may be programmed to generate an interrupt indicating a memory usage threshold has been crossed and that additional DMA memory blocks should be allocated to continue compression beyond the number of DMA blocks initially allocated.

High-performance digital image memory allocation and control system

A compression and storage device comprises: a compressor configured to compress data; a central processing unit (CPU) configured to control storage of the compressed data and to perform at least one additional task; an electronic memory organized as storage blocks each having a storage block size; a direct memory access (DMA) engine configured to operate autonomously from the CPU to transfer a current transfer block of compressed data into one or more storage blocks of the electronic memory; and a transfer block size estimator configured to select a transfer block size for the current transfer block based on previous DMA transfers of compressed data, the selected transfer block size being generally different from the storage block size.

Predictive DMA data transfer

A fluid ejector includes a fluid channel having a resistive heater and terminating in a nozzle, a common bus formed transverse to the fluid channel and between the resistive heater and the nozzle, a connection line laterally adjacent to the fluid channel, and a connection structure for electrically connecting the common bus with the resistive heater and the connection line, the connection structure including a first set of one or more layers for electrical connection and a second set of one or more layers for covering the common bus and connection line. The first set of one or more layers includes a doped polysilicon layer on or overlaid by an optional tantalum-silicide layer. The second set of one or more layers includes a nitride layer on or overlaid by a tantalum layer.

Polysilicon feed-through fluid drop ejector

The systems and methods of this invention allows for an electrical contact structure of the drop ejecting transducer in an inkjet printhead to be designed in such a way that the relatively thick electrical contact lines are not in the ink drop ejection path between the drop ejector transducer and the corresponding nozzle. Such a design thereby minimizes any visible defects due to misdirected satellite drops.

Low topography thermal inkjet drop ejector structure

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Ontario, NY, United States of America

Scott Charles Warner