US Patent No: 5,095,342

Number of patents in Portfolio can not be more than 2000

Methods for sheet scheduling in an imaging system having an endless duplex paper path loop

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Abstract

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Methods for scheduling sheets in an imaging system having an endless duplex paper path loop are disclosed. Preferably, the duplex loop includes a single sheet inverter without a buffer tray so as to eliminate the problems associated therewith. The basic method involves consecutively inserting copy sheets to be imaged into the duplex loop without placing any skipped pitches therebetween regardless of set or job boundaries. Duplex side ones from subsequent sets or jobs are used to fill any gaps which exist in the duplex side one sheet stream of earlier sets or jobs. Additional refinements include using simplex sheets to fill potential skipped pitches in a duplex side one sheet stream by converting simplex sheets located immediately subsequent to the duplex sheets into duplex sheets having a blank back side and scheduling the side one imaging of the now-converted duplex sheets into the potential skipped pitches. Potential skipped pitches can also be filled by shifting an appropriate number of simplex sheets at a simplex-to-duplex transition into any potential skipped pitches in an immediately subsequent duplex side one sheet stream. Further refinements include using duplex or simplex sheets to fill gaps which exist in a duplex side two sheet stream due to skip requests which occurred during the side one scheduling, inserting or imaging.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
XEROX CORPORATIONSTAMFORD, CT13255

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Austin, John C Rochester, NY 13 486
Bertoni, Alfred L Fairport, NY 2 187
Farrell, Michael E Ontario, NY 161 1321
Hurtz, Robert W Camas, WA 6 239
Oritz, Pedro R Webster, NY 1 179

Cited Art Landscape

Patent Info (Count) # Cites Year
 
XEROX CORPORATION (9)
* 4,468,114 Higher productivity recirculative document copying 20 1982
* 4,561,772 Recirculative document duplex copying 23 1983
* 4,708,462 Auto duplex reproduction machine 20 1986
* 4,782,363 Copying system for on-line finishing 44 1987
* 4,934,681 Hybrid output duplex copying system 13 1988
* 4,941,023 Hybrid sequenced document copying system 13 1988
* 4,928,127 Sheet circulation in a duplex printer 19 1989
* 4,928,128 Sheet circulation in a duplex printer 13 1989
* 4,918,490 Batch mode duplex printing 46 1989
 
Minolta Camera Kabushiki Kaisha (2)
* 4,845,527 Copying apparatus 6 1987
* 4,908,660 Image duplicating apparatus having composite and duplex modes of operation 6 1988
 
RICOH COMPANY, LTD. (2)
* 4,385,825 Copying apparatus 24 1982
* 4,975,738 Method of forming an image on both sides of a sheet 14 1990
 
EASTMAN KODAK COMPANY (1)
* 4,681,428 Apparatus for producing interleaved copy sheets 16 1986
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (1)
* 4,935,786 Method and apparatus for duplex printing 44 1989
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
* 4,639,126 Method for producing duplex copy sets from a duplex original set 19 1985
 
MERCANTE INTERNATIONAL A/S AF, NO. 29, MIDTAGER, 2600 GLOSTRUP, DENMARK, A CO. OF DENMARK (1)
* 4,699,503 Electrophotographic information printer with automatical duplex sheet printing 14 1986
 
SCITEX DIGITAL PRINTING, INC. (1)
* 4,453,841 Duplex printing system and method therefor 45 1982
 
SHARP KABUSHIKI KAISHA (1)
* 4,803,522 Sheet refeeding apparatus 4 1987
 
Sperry Corporation (1)
* 4,348,101 Duplex printing apparatus 35 1980
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
XEROX CORPORATION (138)
* 5,184,185 Method for duplex printing scheduling system combining finisher interset skipped pitches with duplex sheet scheduling 31 1991
* 5,159,395 Method of scheduling copy sheets in a dual mode duplex printing system 160 1991
* 5,227,853 Compliant fusing roller 10 1991
* 5,272,511 Sheet inserter and methods of inserting sheets into a continuous stream of sheets 164 1992
* 5,381,220 Sheet handling system for plural cycle printing machines 9 1993
* 5,337,135 Higher productivity trayless duplex printer with variable path velocity 42 1993
* 5,452,068 Apparatus and method for reducing productivity losses in a marking engine 13 1994
* 5,467,182 Sheet transport for high productivity trayless duplex 11 1994
* 5,596,389 Apparatus and method for scheduling an imagable substrate and a special sheet to be fed in the same pitch 22 1994
* 5,559,595 Apparatus and method for scheduling inversions of post printing inserts 7 1994
* 5,557,367 Method and apparatus for optimizing scheduling in imaging devices 153 1995
* 5,489,969 Apparatus and method of controlling interposition of sheet in a stream of imaged substrates 138 1995
* 5,504,568 Print sequence scheduling system for duplex printing apparatus 159 1995
* 5,490,089 Interactive user support system and method using sensors and machine knowledge 32 1995
* 5,835,688 Generic method for automatically generating finite-state machines for schedudling from print engine capabilities 25 1995
* 5,781,710 Generic method for scheduling print engines using print engine capabilities 14 1995
* 5,771,339 Method for automatically deriving print engine capabilities for incremental scheduling from compositional print engine models 13 1995
* 5,696,893 System for generically describing and scheduling operation of modular printing machine 33 1995
* 5,694,529 System for automatically configuring print engine software from print engine module capabilities 19 1995
* 5,668,942 Generic system for describing and using resources for print engine scheduling 16 1995
* 5,812,273 Operation scheduling system for a digital printing apparatus, using a table of executed operations to revise a schedule in real time 15 1997
* 6,064,840 Method and apparatus for scheduling duplex copy jobs by shifting copy sheet into an available pitch to create a skipped pitch between copy sets 4 1999
6,985,250 Alternate imaging mode for multipass direct marking 5 2002
6,814,004 Face-to-face printing within booklet 8 2003
7,532,342 Dynamic IDZ precession in a multi-pass direct marking system 1 2003
7,426,043 Asymmetric IDZ precession in a multi-pass direct marking system 5 2003
7,226,049 Universal flexible plural printer to plural finisher sheet integration system 7 2004
7,320,461 Multifunction flexible media interface system 2 2004
7,396,012 Flexible paper path using multidirectional path modules 3 2004
7,206,532 Multiple object sources controlled and/or selected based on a common sensor 20 2004
7,188,929 Parallel printing architecture with containerized image marking engines 19 2004
7,742,185 Print sequence scheduling for reliability 4 2004
7,136,616 Parallel printing architecture using image marking engine modules 30 2004
7,123,873 Printing system with inverter disposed for media velocity buffering and registration 31 2004
7,024,152 Printing system with horizontal highway and single pass duplex 70 2004
7,412,180 Glossing system for use in a printing system 3 2004
7,283,762 Glossing system for use in a printing architecture 3 2004
7,162,172 Semi-automatic image quality adjustment for multiple marking engine systems 18 2004
7,226,158 Printing systems 14 2005
8,014,024 Gray balance for a printing system of multiple marking engines 3 2005
7,310,108 Printing system 11 2005
7,697,151 Image quality control method and apparatus for multiple marking engine systems 3 2005
7,416,185 Inverter with return/bypass paper path 2 2005
7,258,340 Sheet registration within a media inverter 10 2005
7,206,536 Printing system with custom marking module and method of printing 16 2005
7,444,108 Parallel printing architecture with parallel horizontal printing modules 3 2005
7,305,198 Printing system 8 2005
7,272,334 Image on paper registration alignment 7 2005
7,245,844 Printing system 9 2005
7,873,962 Distributed control systems and methods that selectively activate respective coordinators for respective tasks 1 2005
7,566,053 Media transport system 2 2005
7,245,856 Systems and methods for reducing image registration errors 16 2005
7,593,130 Printing systems 8 2005
7,224,913 Printing system and scheduling method 10 2005
7,787,138 Scheduling system 5 2005
7,751,072 Automated modification of a marking engine in a printing system 1 2005
7,619,769 Printing system 2 2005
7,302,199 Document processing system and methods for reducing stress therein 4 2005
7,486,416 Inter-separation decorrelator 7 2005
8,004,729 Low cost adjustment method for printing systems 0 2005
7,308,218 Warm-up of multiple integrated marking engines 2 2005
7,245,838 Printing platform 7 2005
7,649,645 Method of ordering job queue of marking systems 3 2005
8,081,329 Mixed output print control method and system 1 2005
7,451,697 Printing system 2 2005
7,387,297 Printing system sheet feeder using rear and front nudger rolls 2 2005
7,310,493 Multi-unit glossing subsystem for a printing device 1 2005
7,305,194 Xerographic device streak failure recovery 2 2005
7,433,627 Addressable irradiation of images 5 2005
8,259,369 Color characterization or calibration targets with noise-dependent patch size or number 0 2005
8,203,768 Method and system for processing scanned patches for use in imaging device calibration 4 2005
7,647,018 Printing system 8 2005
7,496,412 Control method using dynamic latitude allocation and setpoint modification, system using the control method, and computer readable recording media containing the control method 0 2005
7,466,940 Modular marking architecture for wide media printing platform 0 2005
7,911,652 Methods and systems for determining banding compensation parameters in printing systems 5 2005
7,495,799 Maximum gamut strategy for the printing systems 1 2005
7,430,380 Printing system 1 2005
7,336,920 Printing system 8 2005
7,324,779 Printing system with primary and secondary fusing devices 7 2005
7,444,088 Printing system with balanced consumable usage 4 2005
7,811,017 Media path crossover for printing system 3 2005
8,711,435 Method for correcting integrating cavity effect for calibration and/or characterization targets 0 2005
7,660,460 Gamut selection in multi-engine systems 3 2005
7,280,771 Media pass through mode for multi-engine system 4 2005
7,519,314 Multiple IOT photoreceptor belt seam synchronization 4 2005
7,922,288 Printing system 0 2005
7,706,737 Mixed output printing system 5 2005
7,636,543 Radial merge module for printing system 1 2005
7,575,232 Media path crossover clearance for printing system 3 2005
7,912,416 Printing system architecture with center cross-over and interposer by-pass path 2 2005
7,826,090 Method and apparatus for multiple printer calibration using compromise aim 0 2005
7,756,428 Media path diagnostics with hyper module elements 1 2005
8,102,564 Method and system for color correction using both spatial correction and printer calibration techniques 1 2005
7,746,524 Bi-directional inverter printing apparatus and method 3 2005
7,963,518 Printing system inverter apparatus and method 3 2006
8,477,333 Printing system and bottleneck obviation through print job sequencing 0 2006
7,630,669 Multi-development system print engine 1 2006
8,194,262 System for masking print defects 0 2006
7,542,059 Page scheduling for printing architectures 1 2006
7,493,055 Fault isolation of visible defects with manual module shutdown options 2 2006
7,965,397 Systems and methods to measure banding print defects 2 2006
8,330,965 Marking engine selection 0 2006
7,681,883 Diverter assembly, printing system and method 1 2006
7,800,777 Automatic image quality control of marking processes 0 2006
7,679,631 Toner supply arrangement 0 2006
7,382,993 Process controls methods and apparatuses for improved image consistency 5 2006
7,865,125 Continuous feed printing system 2 2006
7,856,191 Power regulator of multiple integrated marking engines 0 2006
7,924,443 Parallel printing system 1 2006
7,766,327 Sheet buffering system 2 2006
7,421,241 Printing system with inverter disposed for media velocity buffering and registration 3 2006
7,857,309 Shaft driving apparatus 2 2006
7,719,716 Scanner characterization for printer calibration 0 2006
7,819,401 Print media rotary transport apparatus and method 1 2006
8,159,713 Data binding in multiple marking engine printing systems 0 2006
7,969,624 Method and system for identifying optimal media for calibration and control 2 2006
8,100,523 Bidirectional media sheet transport apparatus 0 2006
7,559,549 Media feeder feed rate 6 2006
8,693,021 Preemptive redirection in printing systems 0 2007
7,934,825 Efficient cross-stream printing system 0 2007
7,676,191 Method of duplex printing on sheet media 1 2007
8,253,958 Scheduling system 0 2007
8,169,657 Registration method using sensed image marks and digital realignment 1 2007
7,925,366 System and method for real-time system control using precomputed plans 0 2007
8,203,750 Color job reprint set-up for a printing system 2 2007
7,697,166 Color job output matching for a printing system 7 2007
7,590,501 Scanner calibration robust to lamp warm-up 1 2007
7,591,603 Face-to-face printing within booklet 0 2007
8,054,476 Asymmetric IDZ precession in a multi-pass direct marking system 0 2008
7,976,012 Paper feeder for modular printers 0 2009
8,276,909 Media path crossover clearance for printing system 0 2009
8,126,388 Face-to-face printing within booklet 0 2009
7,995,225 Scheduling system 0 2010
8,322,720 Sheet buffering system 1 2010
8,049,935 Optical scanner with non-redundant overwriting 0 2011
8,351,840 Printing system architecture with center cross-over and interposer by-pass path 1 2011
8,488,196 Method and system for color correction using both spatial correction and printer calibration techniques 0 2011
8,587,833 Color job reprint set-up for a printing system 0 2012
 
PALO ALTO RESEARCH CENTER INCORPORATED (21)
8,315,898 Planning and scheduling reconfigurable systems around off-line resources 0 2002
7,233,405 Planning and scheduling reconfigurable systems with regular and diagnostic jobs 12 2002
7,230,736 Planning and scheduling reconfigurable systems with alternative capabilities 10 2002
7,139,629 Planning and scheduling for failure recovery system and method 17 2003
6,895,292 Predictive and preemptive planning and scheduling for different job priorities system and method 17 2003
6,856,845 Monitoring and reporting incremental job status system and method 10 2003
7,512,455 Method for self-synchronization of modular production systems 2 2004
7,185,888 Rotational jam clearance apparatus 8 2004
7,791,751 Printing systems 2 2005
8,819,103 Communication in a distributed system 0 2005
7,791,741 On-the-fly state synchronization in a distributed system 1 2005
7,624,981 Universal variable pitch interface interconnecting fixed pitch sheet processing machines 1 2005
8,407,077 System and method for manufacturing system design and shop scheduling using network flow modeling 0 2006
8,607,102 Fault management for a printing system 1 2006
7,918,453 Rotational jam clearance apparatus 1 2006
7,945,346 Module identification method and system for path connectivity in modular systems 1 2006
8,145,335 Exception handling 0 2006
7,689,311 Model-based planning using query-based component executable instructions 1 2007
7,590,464 System and method for on-line planning utilizing multiple planning queues 0 2007
7,931,269 Rotational jam clearance apparatus 0 2007
8,005,561 Method for self-synchronization of modular production systems 0 2009
 
CANON KABUSHIKI KAISHA (4)
* 5,790,766 Method of printing on both sides of sheet without using a both side printing mechanism and an apparatus for use therewith 7 1995
* 6,204,927 Image forming apparatus and method of controlling same 6 1997
6,377,356 Method of printing on both sides of sheet without using a both side printing mechanism and an apparatus for use therewith 4 1998
6,654,134 Method of printing on both sides of a sheet with data resending following a jam and an apparatus for use therewith 2 2002
 
MINOLTA CO., LTD. (4)
* 5,703,693 Digital copy machine allowing duplex copying in short time through novel recirculation timing 19 1994
* 5,933,686 Image processing unit having reserve function 5 1996
* 6,047,148 Image forming apparatus 5 1998
* 6,125,249 Image processing unit having reserve function 10 1999
 
EASTMAN KODAK COMPANY (3)
6,608,990 Job ordering system for an image-forming machine 3 2000
8,000,645 Print engine productivity module inverter 1 2008
8,224,226 Method for increasing duplex reproduction apparatus productivity by adjusting sheet travel time difference 0 2011
 
LEXMARK INTERNATIONAL, INC. (2)
7,130,574 Image forming device with multimode duplexer 1 2004
7,796,936 Image forming device with multimode duplexer 0 2006
 
IMIP LLC (1)
* 5,444,513 Process for operating a photographic processing apparatus and an apparatus for photographic processing 2 1994
 
INFOPRINT SOLUTIONS COMPANY, LLC, A DELAWARE CORPORATION (1)
6,728,006 Method, system, and program for generating a blank side of a page in a print job 0 2000
 
Minolta Camera Kabushiki Kaisha (1)
* 5,557,391 Image forming apparatus for producing duplex or composite prints with improved efficiency by feeding sheets at shortened intervals 6 1994
 
OCE-TECHNOLOGIES B.V. (1)
* 6,069,704 Method of scheduling a sequence of pages to be printed with a duplex printer 12 1997
 
RICOH COMPANY, LTD. (1)
* 7,458,674 Ink drying time creating duplex printing apparatus 4 2006
 
SHARP KABUSHIKI KAISHA (1)
* 6,185,406 Image forming apparatus 5 1999
 
TOSHIBA TEC KABUSHIKI KAISHA (1)
* 6,895,197 Method and apparatus for forming an image 1 2002
* Cited By Examiner