DE3787504D1 - Verfahren und Vorrichtung zur Korrektur des Zitterns eines Polygonspiegels in einem Bildaufzeichungsgerät. - Google Patents
Verfahren und Vorrichtung zur Korrektur des Zitterns eines Polygonspiegels in einem Bildaufzeichungsgerät.Info
- Publication number
- DE3787504D1 DE3787504D1 DE87115501T DE3787504T DE3787504D1 DE 3787504 D1 DE3787504 D1 DE 3787504D1 DE 87115501 T DE87115501 T DE 87115501T DE 3787504 T DE3787504 T DE 3787504T DE 3787504 D1 DE3787504 D1 DE 3787504D1
- Authority
- DE
- Germany
- Prior art keywords
- trembling
- correcting
- polygon mirror
- image recorder
- recorder
- 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 - Fee Related
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
- H04N1/053—Detection, control or error compensation of scanning velocity or position in main scanning direction, e.g. synchronisation of line start or picture elements in a line
-
- 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
- H04N2201/04732—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
- H04N2201/04744—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
- H04N2201/04767—Control or error compensation of scanning position or velocity by controlling the position of the scanned image area by controlling the timing of the signals, e.g. by controlling the frequency o phase of the pixel clock
- H04N2201/04768—Controlling the frequency of the signals
- H04N2201/04774—Controlling the frequency of the signals using a reference clock or oscillator
-
- 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
- H04N2201/04793—Control or error compensation of scanning position or velocity using stored control or compensation data, e.g. previously measured data
-
- 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)
- Mechanical Optical Scanning Systems (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61257727A JPH0668576B2 (ja) | 1986-10-29 | 1986-10-29 | ポリゴンミラーのジッタ補正装置 |
JP61279288A JPS63132214A (ja) | 1986-11-21 | 1986-11-21 | ポリゴンミラ−のジツタ補正方法および装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3787504D1 true DE3787504D1 (de) | 1993-10-28 |
DE3787504T2 DE3787504T2 (de) | 1994-05-11 |
Family
ID=26543370
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE87115501T Expired - Fee Related DE3787504T2 (de) | 1986-10-29 | 1987-10-22 | Verfahren und Vorrichtung zur Korrektur des Zitterns eines Polygonspiegels in einem Bildaufzeichungsgerät. |
Country Status (3)
Country | Link |
---|---|
US (2) | US4872065A (de) |
EP (1) | EP0265845B1 (de) |
DE (1) | DE3787504T2 (de) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE68922046T2 (de) * | 1988-08-30 | 1996-07-04 | Tokyo Electric Co Ltd | Optischer Abtaster. |
JPH0353212A (ja) * | 1989-07-21 | 1991-03-07 | Minolta Camera Co Ltd | 光ビーム走査装置 |
JP2937361B2 (ja) * | 1989-09-29 | 1999-08-23 | 日本電気株式会社 | レーザ加工機 |
US5164843A (en) * | 1990-06-18 | 1992-11-17 | Olive Tree Technology, Inc. | Scanner with a linearized vco pixel clock |
US5323183A (en) * | 1990-11-13 | 1994-06-21 | Canon Kabushiki Kaisha | Image recording apparatus |
US5212570A (en) * | 1991-06-27 | 1993-05-18 | Xerox Corporation | Pixel clock phase locked loop for a laser scanner |
US5430472A (en) * | 1991-07-29 | 1995-07-04 | Xerox Corporation | Method and apparatus for eliminating distortion via overscanned illumination for optical printers and the like having high gamma photosensitive recording media and high addressability |
JP3008225B2 (ja) * | 1991-11-12 | 2000-02-14 | 富士写真フイルム株式会社 | 画像記録装置 |
US5477330A (en) * | 1992-10-16 | 1995-12-19 | Printware, Inc. | Synchronization to a start-of-scan detection, and digital generation of variable frequencies, from a fixed-frequency fixed-phase frequency source in an image generator in order to highly accurately time the placement of pixels upon a scan line |
US5539441A (en) * | 1993-11-09 | 1996-07-23 | Xerox Corporation | Jitter reduction in an overfilled raster output polygon scanner system |
JPH09281418A (ja) * | 1996-04-11 | 1997-10-31 | Minolta Co Ltd | 画像形成装置 |
US6100915A (en) * | 1996-08-28 | 2000-08-08 | Asahi Kogaku Kogyo Kabushiki Kaisha | Laser drawing apparatus |
JPH10260663A (ja) * | 1997-01-14 | 1998-09-29 | Toshiba Corp | ジッタ補正回路および平面表示装置 |
US6477656B1 (en) * | 1998-09-29 | 2002-11-05 | Konica Corporation | System for generating clock pulse which the number of pulses outputted within a predetermined time period is based on the number of calculated delay stages |
US6219085B1 (en) * | 1998-10-21 | 2001-04-17 | International Business Machines Corporation | Method and system for improved performance of adjustable printer clocks in an electrophotographic device |
JP3975626B2 (ja) * | 1999-11-11 | 2007-09-12 | 株式会社オーク製作所 | レーザ描画装置 |
US6549225B2 (en) * | 2001-02-28 | 2003-04-15 | Lexmark International, Inc. | Method of margin alignment and plane-to-plane registration in a tandem color electrophotographic machine |
JP2002278408A (ja) * | 2001-03-22 | 2002-09-27 | Konica Corp | クロック発生回路および画像形成装置 |
US7271824B2 (en) * | 2001-09-28 | 2007-09-18 | Ricoh Company, Ltd. | Pixel clock generating apparatus, optical writing apparatus using a pixel clock, imaging apparatus, and method for generating pixel clocks |
US7256815B2 (en) * | 2001-12-20 | 2007-08-14 | Ricoh Company, Ltd. | Image forming method, image forming apparatus, optical scan device, and image forming apparatus using the same |
JP2003300341A (ja) * | 2002-04-10 | 2003-10-21 | Ricoh Co Ltd | 画素クロック生成装置、レーザ走査装置、及び画像形成装置 |
JP4593884B2 (ja) * | 2002-05-10 | 2010-12-08 | キヤノン株式会社 | レーザ走査制御装置 |
US6933957B2 (en) * | 2002-09-24 | 2005-08-23 | Ricoh Company, Ltd. | Pixel clock generation apparatus, pixel clock generation method, and image forming apparatus capable of correcting main scan dot position shift with a high degree of accuracy |
JP2006047590A (ja) * | 2004-08-03 | 2006-02-16 | Sumitomo Precision Prod Co Ltd | ジッタ測定方法、ジッタ測定装置及び画像形成装置 |
JP4909966B2 (ja) * | 2008-09-16 | 2012-04-04 | 株式会社リコー | 画素クロック生成装置及び画像形成装置 |
JP5593749B2 (ja) * | 2010-03-11 | 2014-09-24 | 株式会社リコー | 画素クロック生成装置、画像形成装置 |
US8624949B2 (en) | 2011-03-29 | 2014-01-07 | Xerox Corporation | Raster output scanner with beam delay compensation to counteract jitter and wiper-induced banding |
JP5947529B2 (ja) * | 2011-12-05 | 2016-07-06 | キヤノン株式会社 | 画像形成装置 |
US9327515B2 (en) | 2011-12-07 | 2016-05-03 | Xerox Corporation | Electronic banding compensation (EBC) of halftone-interaction banding using variable beam delays |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4032888A (en) * | 1975-12-15 | 1977-06-28 | The Singer Company | Nonlinear scan drive reader with variable clock correction |
US4204233A (en) * | 1977-10-31 | 1980-05-20 | Xerox Corporation | Electronic facet error correction for laser scanning |
JPS5492769A (en) * | 1977-12-30 | 1979-07-23 | Fujitsu Ltd | Correction method of scanning light modulation clock |
US4257053A (en) * | 1979-02-09 | 1981-03-17 | Geosource, Inc. | High-resolution laser plotter |
US4268867A (en) * | 1979-06-29 | 1981-05-19 | Xerox Corporation | Pixel clock for scanner |
US4270131A (en) * | 1979-11-23 | 1981-05-26 | Tompkins E Neal | Adaptive error correction device for a laser scanner |
US4320420A (en) * | 1980-07-03 | 1982-03-16 | Xerox Corporation | Hybrid bit clock servo |
US4400740A (en) * | 1981-08-24 | 1983-08-23 | Xerox Corporation | Intensity control for raster output scanners |
JPS59119963A (ja) * | 1982-12-27 | 1984-07-11 | Fujitsu Ltd | 広域光走査装置 |
US4600945A (en) * | 1983-03-31 | 1986-07-15 | Rca Corporation | Digital video processing system with raster distortion correction |
JPH069369B2 (ja) * | 1984-11-22 | 1994-02-02 | 株式会社リコー | 光走査装置における画像走査クロック発生装置 |
US4635000A (en) * | 1985-11-12 | 1987-01-06 | Xerox Corporation | Temporal pixel clock synchronization system |
JPS62204222A (ja) * | 1986-03-04 | 1987-09-08 | Fuji Photo Film Co Ltd | 光ビ−ム走査装置 |
-
1987
- 1987-10-22 EP EP87115501A patent/EP0265845B1/de not_active Expired - Lifetime
- 1987-10-22 DE DE87115501T patent/DE3787504T2/de not_active Expired - Fee Related
- 1987-10-28 US US07/113,743 patent/US4872065A/en not_active Expired - Fee Related
-
1989
- 1989-05-18 US US07/353,850 patent/US4920430A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US4920430A (en) | 1990-04-24 |
US4872065A (en) | 1989-10-03 |
DE3787504T2 (de) | 1994-05-11 |
EP0265845B1 (de) | 1993-09-22 |
EP0265845A3 (en) | 1990-02-07 |
EP0265845A2 (de) | 1988-05-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |