DE60017971D1 - Positionssteuerung der Unterabtastung - Google Patents

Positionssteuerung der Unterabtastung

Info

Publication number
DE60017971D1
DE60017971D1 DE60017971T DE60017971T DE60017971D1 DE 60017971 D1 DE60017971 D1 DE 60017971D1 DE 60017971 T DE60017971 T DE 60017971T DE 60017971 T DE60017971 T DE 60017971T DE 60017971 D1 DE60017971 D1 DE 60017971D1
Authority
DE
Germany
Prior art keywords
scan
sub
position control
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE60017971T
Other languages
English (en)
Other versions
DE60017971T2 (de
Inventor
James W Lannom
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xerox Corp
Original Assignee
Xerox Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of DE60017971D1 publication Critical patent/DE60017971D1/de
Application granted granted Critical
Publication of DE60017971T2 publication Critical patent/DE60017971T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/047—Detection, control or error compensation of scanning velocity or position
    • H04N1/0473—Detection, control or error compensation of scanning velocity or position in subscanning direction, e.g. picture start or line-to-line synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/113—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using oscillating or rotating mirrors
    • H04N1/1135—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using oscillating or rotating mirrors for the main-scan only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/12—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using the sheet-feed movement or the medium-advance or the drum-rotation movement as the slow scanning component, e.g. arrangements for the main-scanning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/024—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted
    • H04N2201/02406—Arrangements for positioning elements within a head
    • H04N2201/02439—Positioning method
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04701—Detection of scanning velocity or position
    • H04N2201/0471—Detection of scanning velocity or position using dedicated detectors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04701—Detection of scanning velocity or position
    • H04N2201/04715—Detection of scanning velocity or position by detecting marks or the like, e.g. slits
    • H04N2201/04722—Detection of scanning velocity or position by detecting marks or the like, e.g. slits on a photoconductive drum or belt
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04701—Detection of scanning velocity or position
    • H04N2201/04732—Detecting at infrequent intervals, e.g. once or twice per line for main-scan control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04701—Detection of scanning velocity or position
    • H04N2201/04734—Detecting at frequent intervals, e.g. once per line for sub-scan control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04701—Detection of scanning velocity or position
    • H04N2201/04744—Detection of scanning velocity or position by detecting the scanned beam or a reference beam
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04753—Control or error compensation of scanning position or velocity
    • H04N2201/04758—Control or error compensation of scanning position or velocity by controlling the position of the scanned image area
    • H04N2201/0476—Control or error compensation of scanning position or velocity by controlling the position of the scanned image area using an optical, electro-optical or acousto-optical element
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/047—Detection, control or error compensation of scanning velocity or position
    • H04N2201/04753—Control or error compensation of scanning position or velocity
    • H04N2201/04794—Varying the control or compensation during the scan, e.g. using continuous feedback or from line to line

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Laser Beam Printer (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Liquid Crystal (AREA)
  • Facsimile Heads (AREA)
DE60017971T 1999-04-26 2000-04-18 Positionssteuerung der Unterabtastung Expired - Lifetime DE60017971T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/299,263 US6226029B1 (en) 1999-04-26 1999-04-26 Aerial slow scan position control using an electronically addressable liquid crystal plate
US299263 1999-04-26

Publications (2)

Publication Number Publication Date
DE60017971D1 true DE60017971D1 (de) 2005-03-17
DE60017971T2 DE60017971T2 (de) 2006-01-12

Family

ID=23154036

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60017971T Expired - Lifetime DE60017971T2 (de) 1999-04-26 2000-04-18 Positionssteuerung der Unterabtastung

Country Status (4)

Country Link
US (1) US6226029B1 (de)
EP (1) EP1049319B1 (de)
JP (1) JP4773601B2 (de)
DE (1) DE60017971T2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6226029B1 (en) * 1999-04-26 2001-05-01 Xerox Corporation Aerial slow scan position control using an electronically addressable liquid crystal plate
US7333254B2 (en) * 2002-03-15 2008-02-19 Ricoh Company, Ltd. Optical scanning apparatus, illuminant apparatus and image forming apparatus
JP4980678B2 (ja) * 2006-09-06 2012-07-18 株式会社リコー 光走査装置、光走査装置の製造方法及びカラー画像形成装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040096A (en) 1972-11-27 1977-08-02 Xerox Corporation Flying spot scanner with runout correction
US4374397A (en) * 1981-06-01 1983-02-15 Eastman Kodak Company Light valve devices and electronic imaging/scan apparatus with locationally-interlaced optical addressing
US5418904A (en) * 1988-11-08 1995-05-23 Ricoh Company, Ltd. Image forming system
JPH03251812A (ja) * 1989-12-15 1991-11-11 Ricoh Co Ltd 光記録装置
US5049897A (en) 1990-03-09 1991-09-17 Eastman Kodak Company Method and apparatus for beam displacement in a light beam scanner
US5287125A (en) * 1991-08-05 1994-02-15 Xerox Corporation Raster output scanner with process direction spot position control
US5204523A (en) 1991-08-19 1993-04-20 Xerox Corporation Method for spot position control in an optical output device employing a variable wavelength light source and an optical beam deflecting element
US5212381A (en) 1991-08-19 1993-05-18 Xerox Corporation Method of controlling slow scan direction of spot position in an optical output device employing an electro-optical control apparatus
US5208456A (en) 1991-08-19 1993-05-04 Xerox Corporation Apparatus and system for spot position control in an optical output device employing a variable wavelength light source
US5363128A (en) 1992-09-25 1994-11-08 Xerox Corporation Device and apparatus for scan line process direction control in a multicolor electrostatographic machine
US5342715A (en) * 1993-04-23 1994-08-30 Xerox Corporation Color printer having reduced first copy out time and extended photoreceptor life
US5764273A (en) 1993-08-27 1998-06-09 Xerox Corporation Spot position control using a linear array of light valves
JPH10215351A (ja) * 1997-01-29 1998-08-11 Matsushita Electric Ind Co Ltd 光ビーム走査装置
JP3283217B2 (ja) * 1997-07-22 2002-05-20 旭光学工業株式会社 走査光学系の走査位置補正装置
US6226029B1 (en) * 1999-04-26 2001-05-01 Xerox Corporation Aerial slow scan position control using an electronically addressable liquid crystal plate

Also Published As

Publication number Publication date
EP1049319B1 (de) 2005-02-09
EP1049319A3 (de) 2002-06-26
JP2000347125A (ja) 2000-12-15
DE60017971T2 (de) 2006-01-12
US6226029B1 (en) 2001-05-01
EP1049319A2 (de) 2000-11-02
JP4773601B2 (ja) 2011-09-14

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition