Facsimile and static presentation processing – Static presentation processing – Communication
Reexamination Certificate
1995-08-07
2003-12-02
Garcia, Gabriel (Department: 2624)
Facsimile and static presentation processing
Static presentation processing
Communication
C358S001130
Reexamination Certificate
active
06657741
ABSTRACT:
TECHNICAL FIELD OF THE INVENTION
The present invention pertains in general to electrophotographic printers and, more particularly, to a plurality of print engines arranged in parallel to process print jobs in a parallel manner.
BACKGROUND OF THE INVENTION
Electrophotographic print engines have been utilized with both printers and copiers. In a printer, the print engine is typically interfaced with a computer to select and organize fonts or bit map the images. In a copier application, the print engine is interfaced with an input device that scans the image onto the photoconductor drum of the print engine. However, a CCD device could also be utilized in this application in the form of a CCD scanner. In either of the applications, a conventional print engine for a monochrome process would typically feed a single sheet of paper and pass it by the photoconductor drum for an image transfer process and then pass it to a fuser. Thereafter, the completed sheet will be output. Multiple copy print jobs will sequentially feed the paper in a serial manner. The speed of the printer is a function of the speed at which the image can be created, the speed at which the image can be transferred to the paper and the speed of the fuser. As increased output is required, the speed of each of these elements must be increased.
In a monochrome process, only one transfer operation is required. However, in a multipass color process, multiple images must be superimposed on one another on the sheet of paper in a direct transfer system, thus requiring multiple passes of the paper or image carrier through the print engine. In a double transfer system, the image is disposed on an intermediate drum and then the composite image transferred to the paper or image carrier. In a multiple print job on a direct transfer system, this requires each sheet of paper to be printed in a serial manner by passing it through the print engine. For either the monochrome process or the color process, a conventional serial feed print engine has the output thereof defined by the speed of the input device and the speed of the print engine itself.
One technique that has been utilized to increase throughput is a tandem print engine. In a tandem print engine, multiple colors can be disposed on the sheet of paper or the image carrier at different stations that are disposed in serial configuration. In this manner, the speed is the same for one, two, three or four color printing.
SUMMARY OF THE INVENTION
The present invention disclosed and claimed herein comprises a multiple print engine system. The system includes at least one workstation for generating one or more print jobs having a plurality of copies associated with each print job. A RIP engines is operable to receive the print job and parse it into separate pages in association with the print job. These are then disposed in a page buffer. A plurality of printers are then provided which are each accessible in parallel. A processor is operable to select pages from the page buffer and output them to select ones of the printers in a predetermined order.
REFERENCES:
patent: 4754428 (1988-06-01), Schultz et al.
patent: 4791492 (1988-12-01), Nagashima et al.
patent: 5040031 (1991-08-01), Hayashi
patent: 5179637 (1993-01-01), Nardozzi
patent: 5208640 (1993-05-01), Horie et al.
patent: 5220674 (1993-06-01), Morgan et al.
patent: 5287194 (1994-02-01), Lobiondo
patent: 5303336 (1994-04-01), Kageyama et al.
patent: 5315701 (1994-05-01), DiNicola et al.
patent: 5319464 (1994-06-01), Douglas et al.
patent: 5333246 (1994-07-01), Nagasaka
patent: 5367673 (1994-11-01), Goldsmith et al.
patent: 5392391 (1995-02-01), Caulk, Jr. et al.
patent: 5408590 (1995-04-01), Dvorzsak
patent: 5428464 (1995-06-01), Silverbrook
patent: 5435544 (1995-07-01), Mandel
patent: 5448655 (1995-09-01), Yamaguchi
patent: 5450571 (1995-09-01), Rosekrans et al.
patent: 5467434 (1995-11-01), Hower, Jr. et al.
patent: 5528374 (1996-06-01), Matias
patent: 5559933 (1996-09-01), Boswell
patent: 5564109 (1996-10-01), Snyder et al.
patent: 5590245 (1996-12-01), Leamy et al.
patent: 5596416 (1997-01-01), Barry et al.
patent: 5859956 (1999-01-01), Sugiyama et al.
patent: 0 545 261 (1993-06-01), None
patent: 0 550 158 (1993-07-01), None
patent: 0 556 994 (1993-08-01), None
patent: 0 601 304 (1994-06-01), None
patent: 0 603 714 (1994-06-01), None
Wayner, Peter, Print Pages Faster, Dec. 1993, Byte Magazine 115-116 and 119-123.*
IBM Technical Disclosure Bulletin, vol. 35, No. 4A, Sep. 1992.
Barry Michael W.
Rowe Francis A.
Tompkins E. Neal
Garcia Gabriel
Howison & Arnott, LLP
Howleon Gregory M.
TR Systems, Inc.
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