BR8706316A - Aparelhagem para a exposicao de um elamento de formacao de imagem a uma radiacao de formacao de imagem com uma grandeza de intensidade pre determinada;processo para a producao de uma imagem tendo defeitos de formacao de imagens de faixas reduzidos;processo para a producao de uma imagem tendo formacao de imagem reduzida;e aparelhagem para a producao de uma imagem eletro-fotografica virada com tonalidade continua - Google Patents

Aparelhagem para a exposicao de um elamento de formacao de imagem a uma radiacao de formacao de imagem com uma grandeza de intensidade pre determinada;processo para a producao de uma imagem tendo defeitos de formacao de imagens de faixas reduzidos;processo para a producao de uma imagem tendo formacao de imagem reduzida;e aparelhagem para a producao de uma imagem eletro-fotografica virada com tonalidade continua

Info

Publication number
BR8706316A
BR8706316A BR8706316A BR8706316A BR8706316A BR 8706316 A BR8706316 A BR 8706316A BR 8706316 A BR8706316 A BR 8706316A BR 8706316 A BR8706316 A BR 8706316A BR 8706316 A BR8706316 A BR 8706316A
Authority
BR
Brazil
Prior art keywords
image
formation
production
image formation
reduced
Prior art date
Application number
BR8706316A
Other languages
English (en)
Inventor
Denny Lap Yen Lee
Original Assignee
Du Pont
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 Du Pont filed Critical Du Pont
Publication of BR8706316A publication Critical patent/BR8706316A/pt

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • 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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/04036—Details of illuminating systems, e.g. lamps, reflectors
    • G03G15/04045—Details of illuminating systems, e.g. lamps, reflectors for exposing image information provided otherwise than by directly projecting the original image onto the photoconductive recording material, e.g. digital copiers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/12—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers
    • G06K15/1295—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers using a particular photoreceptive medium
    • 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
    • H04N1/126—Arrangements for the main scanning
    • H04N1/127—Arrangements for the main scanning using a cathode ray tube or the like
    • 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
    • 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
    • H04N2201/02425—Self-adjusting arrangements, e.g. compensating for temperature fluctuations
    • 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
    • H04N2201/0402—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
    • H04N2201/0458—Additional arrangements for improving or optimising scanning resolution or quality
    • 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
    • H04N2201/04731—Detection of scanning velocity or position in the sub-scan direction
    • 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
    • H04N2201/04737—Detection of scanning velocity or position by detecting the scanned medium directly, e.g. a leading edge
    • 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
    • H04N2201/04781—Controlling the phase of the signals
    • 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
    • H04N2201/04789—Control or error compensation of scanning position or velocity in the main-scan direction
    • 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
    • H04N2201/04791—Control or error compensation of scanning position or velocity in the sub-scan direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Laser Beam Printer (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Dot-Matrix Printers And Others (AREA)
BR8706316A 1986-11-25 1987-11-23 Aparelhagem para a exposicao de um elamento de formacao de imagem a uma radiacao de formacao de imagem com uma grandeza de intensidade pre determinada;processo para a producao de uma imagem tendo defeitos de formacao de imagens de faixas reduzidos;processo para a producao de uma imagem tendo formacao de imagem reduzida;e aparelhagem para a producao de uma imagem eletro-fotografica virada com tonalidade continua BR8706316A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/934,827 US4746940A (en) 1986-11-25 1986-11-25 Line scanner to reduce banding

Publications (1)

Publication Number Publication Date
BR8706316A true BR8706316A (pt) 1988-07-19

Family

ID=25466130

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8706316A BR8706316A (pt) 1986-11-25 1987-11-23 Aparelhagem para a exposicao de um elamento de formacao de imagem a uma radiacao de formacao de imagem com uma grandeza de intensidade pre determinada;processo para a producao de uma imagem tendo defeitos de formacao de imagens de faixas reduzidos;processo para a producao de uma imagem tendo formacao de imagem reduzida;e aparelhagem para a producao de uma imagem eletro-fotografica virada com tonalidade continua

Country Status (9)

Country Link
US (1) US4746940A (pt)
EP (1) EP0269034B1 (pt)
JP (1) JPH07118766B2 (pt)
KR (1) KR970001388B1 (pt)
AU (1) AU609430B2 (pt)
BR (1) BR8706316A (pt)
CA (1) CA1282819C (pt)
DE (1) DE3777765D1 (pt)
HK (1) HK51392A (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5543251A (en) * 1990-06-29 1996-08-06 E. I. Du Pont De Nemours And Company Method of recording plural holographic images into a holographic recording material by temporal interleaving
US6025922A (en) * 1998-12-18 2000-02-15 Electronics For Imaging Reduction of banding in printed images
US7911652B2 (en) * 2005-09-08 2011-03-22 Xerox Corporation Methods and systems for determining banding compensation parameters in printing systems
US7564475B1 (en) 2008-03-28 2009-07-21 Xerox Corporation Compensation of high frequency banding in printing systems

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700955A (en) * 1970-09-01 1972-10-24 Honeywell Inc Cathode ray tube display apparatus with extended tube life
DE2644953A1 (de) * 1975-10-09 1977-04-21 Coburn Technologies Inc Kopiergeraet mit zusaetzlicher bilderzeugungseinrichtung
DE2822639A1 (de) * 1978-05-24 1979-11-29 Messerschmitt Boelkow Blohm Einrichtung zur erzeugung fotografischer belichtungen mit hilfe eines digital gespeicherten bildinhaltes und eines relativ zu einem lichtempfindlichen material bewegten reproduktionskopfes
JPS5515122A (en) * 1978-07-18 1980-02-02 Toshiba Corp Electronic printer
US4201996A (en) * 1978-10-05 1980-05-06 Tektronix, Inc. Cathode ray tube having image transfer means
GB2051679B (en) * 1979-06-02 1983-04-07 Konishiroku Photo Ind Electrophotographically recording information
DE3041132A1 (de) * 1979-11-06 1981-05-21 Fujitsu Ltd., Kawasaki, Kanagawa Bildaufzeichnungsverfahren
US4355891A (en) * 1980-03-06 1982-10-26 Xerox Corporation Reduction of lamp strobing effects in a reproducing apparatus
US4367943A (en) * 1980-03-21 1983-01-11 Konishiroku Photo Industry Co., Ltd. Apparatus for providing recording compensation for rotating drum speed fluctuations in an information recording apparatus
US4350435A (en) * 1980-04-04 1982-09-21 Eastman Kodak Company Copy contrast and density control
DE3027194A1 (de) * 1980-07-18 1982-02-18 Olympia Werke Ag, 2940 Wilhelmshaven Elektrofotografisches schreibverfahren und vorrichtung zur durchfuehrung des verfahrens
US4359745A (en) * 1980-07-30 1982-11-16 Honeywell Inc. Cathode ray tube display apparatus
DE3108115A1 (de) * 1981-03-04 1982-09-16 Philips Patentverwaltung Gmbh, 2000 Hamburg Verfahren und andordnung zur elektrophotografischen darstellung von informationen
US4445125A (en) * 1982-04-19 1984-04-24 Xerox Corporation Diode laser array system for printing and copying applications
US4524116A (en) * 1982-05-18 1985-06-18 Comtech Research Unit Limited Electrophotographic contact printing and master therefore
JPS59135488A (ja) * 1983-01-24 1984-08-03 Canon Inc 画像形成装置
US4554561A (en) * 1983-04-11 1985-11-19 Xerox Corporation Multi-channel electro-optic printer for printing plural image lines at once
US4551732A (en) * 1983-06-20 1985-11-05 Tektronix, Inc. Method and apparatus for modulating the recording rate of an image on the recording media of a line scan graphic recorder with the velocity of the recording media
US4578331A (en) * 1983-07-11 1986-03-25 Ricoh Company, Ltd. Color image forming method
US4627712A (en) * 1983-08-06 1986-12-09 Canon Kabushiki Kaisha Image density control apparatus
JPS60158698U (ja) * 1984-03-30 1985-10-22 沖電気工業株式会社 ライン光源
US4560989A (en) * 1984-04-23 1985-12-24 Tektronix, Inc. Method and apparatus for accelerating the recording rate of a CRT graphic recorder
JPS6163870A (ja) * 1984-09-05 1986-04-02 Fuji Xerox Co Ltd 電子写真式プリンタ用光書込み装置
JPS61182966A (ja) * 1985-02-08 1986-08-15 Matsushita Electric Ind Co Ltd 画像記録装置
JPS62265859A (ja) * 1986-05-13 1987-11-18 Fujitsu Ltd 電子プリンタ装置

Also Published As

Publication number Publication date
EP0269034B1 (en) 1992-03-25
DE3777765D1 (de) 1992-04-30
AU8165387A (en) 1988-05-26
CA1282819C (en) 1991-04-09
KR880006576A (ko) 1988-07-23
EP0269034A3 (en) 1989-01-04
AU609430B2 (en) 1991-05-02
KR970001388B1 (ko) 1997-02-06
HK51392A (en) 1992-07-24
EP0269034A2 (en) 1988-06-01
JPS63144369A (ja) 1988-06-16
US4746940A (en) 1988-05-24
JPH07118766B2 (ja) 1995-12-18

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Legal Events

Date Code Title Description
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 23/11/2002