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BE824343A - Appareil de reproduction de document comportant des moyens de commande de densite d'images - Google Patents

Appareil de reproduction de document comportant des moyens de commande de densite d'images

Info

Publication number
BE824343A
BE824343A BE152342A BE152342A BE824343A BE 824343 A BE824343 A BE 824343A BE 152342 A BE152342 A BE 152342A BE 152342 A BE152342 A BE 152342A BE 824343 A BE824343 A BE 824343A
Authority
BE
Belgium
Prior art keywords
control means
reproducing apparatus
apparatus including
image density
including image
Prior art date
Application number
BE152342A
Other languages
English (en)
French (fr)
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 filed Critical
Publication of BE824343A publication Critical patent/BE824343A/xx

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
    • 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
    • G03G15/045—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 with means for charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas
    • G03G15/047—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 with means for charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas for discharging non-image areas
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/04—Arrangements for exposing and producing an image
    • G03G2215/0429—Changing or enhancing the image
    • G03G2215/0431—Producing a clean non-image area, i.e. avoiding show-around effects
    • G03G2215/0434—Parameters defining the non-image area to be cleaned
    • G03G2215/0436—Document properties at the scanning position, e.g. position and density
    • G03G2215/0439—Automatic detection of properties
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/04—Arrangements for exposing and producing an image
    • G03G2215/0429—Changing or enhancing the image
    • G03G2215/0431—Producing a clean non-image area, i.e. avoiding show-around effects
    • G03G2215/0448—Charge-erasing means for the non-image area
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/04—Arrangements for exposing and producing an image
    • G03G2215/0429—Changing or enhancing the image
    • G03G2215/0468—Image area information changed (default is the charge image)
    • G03G2215/047—Image corrections
    • G03G2215/0473—Image corrections due to document imperfections, e.g. punchholes, books
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/04—Arrangements for exposing and producing an image
    • G03G2215/0429—Changing or enhancing the image
    • G03G2215/0468—Image area information changed (default is the charge image)
    • G03G2215/048—Technical-purpose-oriented image area changes
    • G03G2215/0482—Toner-free areas produced
    • G03G2215/0485—Avoiding problems in standard processing steps, such as transfer and fixing
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/04—Arrangements for exposing and producing an image
    • G03G2215/0429—Changing or enhancing the image
    • G03G2215/0468—Image area information changed (default is the charge image)
    • G03G2215/0492—Without changing the charge image

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
BE152342A 1974-02-14 1975-01-13 Appareil de reproduction de document comportant des moyens de commande de densite d'images BE824343A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00442533A US3834807A (en) 1974-02-14 1974-02-14 Copier with leading edge image control

Publications (1)

Publication Number Publication Date
BE824343A true BE824343A (fr) 1975-05-02

Family

ID=23757173

Family Applications (1)

Application Number Title Priority Date Filing Date
BE152342A BE824343A (fr) 1974-02-14 1975-01-13 Appareil de reproduction de document comportant des moyens de commande de densite d'images

Country Status (13)

Country Link
US (1) US3834807A (xx)
JP (1) JPS5925219B2 (xx)
BE (1) BE824343A (xx)
CA (1) CA1035004A (xx)
CH (1) CH581852A5 (xx)
DE (1) DE2505833C2 (xx)
DK (1) DK142634B (xx)
FR (1) FR2261558B1 (xx)
GB (1) GB1447819A (xx)
IL (1) IL46565A (xx)
IT (1) IT1027651B (xx)
NL (1) NL7500896A (xx)
SE (1) SE391591B (xx)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50122263A (xx) * 1974-02-19 1975-09-25
JPS5123724A (en) * 1974-08-06 1976-02-25 Ricoh Kk Fukushakitoniokeru suritsutoshomeisochi
JPS5173434A (en) * 1974-12-23 1976-06-25 Canon Kk Rokosochi
US3998541A (en) * 1975-04-18 1976-12-21 Eastman Kodak Company Illumination arrangement providing for interframe flashdown
NL7507493A (nl) * 1975-06-24 1976-12-28 Oce Van Der Grinten Nv Kopieerinrichting.
US4046471A (en) * 1975-11-03 1977-09-06 International Business Machines Corporation Dual mode electrophotographic apparatus having dual function printing beam
US4118119A (en) * 1976-09-02 1978-10-03 Xerox Corporation Facetted edge fadeout reflector
US4162845A (en) * 1977-09-15 1979-07-31 Xerox Corporation Copier for greater than standard length documents
US4179213A (en) * 1978-04-10 1979-12-18 International Business Machines Corporation Vector pinning in an electrophotographic machine
US4183657A (en) * 1978-04-10 1980-01-15 International Business Machines Corporation Dynamic reference for an image quality control system
US4178095A (en) * 1978-04-10 1979-12-11 International Business Machines Corporation Abnormally low reflectance photoconductor sensing system
US4255042A (en) * 1979-03-26 1981-03-10 International Business Machines Corporation Light pipe for accurate erasure of photoconductor charge
US4431301A (en) * 1980-03-12 1984-02-14 Tokyo Shibaura Denki Kabushiki Kaisha Electrostatic copying apparatus with means for preventing contamination of reverse side of copying medium
CA1173890A (en) * 1980-08-28 1984-09-04 John H. Dodge Control of copier start-up operations
US4463284A (en) * 1981-07-28 1984-07-31 Konishiroku Photo Industry Co., Ltd. Method and apparatus for controlling luminous intensity of fluorescent lamp of reproducing apparatus
JPS5823033A (ja) * 1981-08-03 1983-02-10 Fuji Xerox Co Ltd 電子写真法
DE3334362A1 (de) * 1982-09-25 1984-03-29 Canon K.K., Tokyo Bilderzeugungseinrichtung
JPS5968728A (ja) * 1982-10-12 1984-04-18 Canon Inc 原稿検出装置
DE3341774C3 (de) * 1982-11-20 1994-09-01 Canon Kk Vorrichtung zur bereichsweisen Entladung eines photoleitfähigen Aufzeichnungsmaterials
US4505575A (en) * 1983-08-26 1985-03-19 Xerox Corporation Non-image erase system for reproduction machines
US4655579A (en) * 1984-08-30 1987-04-07 Ricoh Company, Ltd. Multicolored image forming apparatus
US4725868A (en) * 1985-06-17 1988-02-16 Mita Industrial Co., Ltd. Electrostatic copying machine
JPS63274973A (ja) * 1987-05-06 1988-11-11 Ricoh Co Ltd 複写機のイレ−サ点灯制御装置
JPS63194616U (xx) * 1987-05-30 1988-12-14
JPH01198770A (ja) * 1987-10-16 1989-08-10 Ricoh Co Ltd 複写機の制御装置
US4914483A (en) * 1989-04-17 1990-04-03 Eastman Kodak Company Electrostatographic transfer with artifact suppression
JP3162358B2 (ja) * 1989-04-30 2001-04-25 株式会社リコー デジタル複写機
JP3089133B2 (ja) * 1993-05-18 2000-09-18 東北リコー株式会社 画像処理装置
US5802215A (en) * 1996-12-17 1998-09-01 Xerox Corporation Quadrant-based density detection for lead edge lightening

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3135179A (en) * 1959-04-02 1964-06-02 Xerox Corp Xerographic apparatus
BE793559A (fr) * 1971-12-30 1973-06-29 Xerox Corp Machine electrostatographique comportant un dispositif de pre-developpement d'exposition

Also Published As

Publication number Publication date
DK142634C (xx) 1981-08-03
DE2505833A1 (de) 1975-08-28
FR2261558B1 (xx) 1978-12-22
CA1035004A (en) 1978-07-18
GB1447819A (en) 1976-09-02
US3834807A (en) 1974-09-10
SE391591B (sv) 1977-02-21
DK50575A (xx) 1975-10-13
IL46565A0 (en) 1975-04-25
DE2505833C2 (de) 1982-12-02
FR2261558A1 (xx) 1975-09-12
NL7500896A (nl) 1975-08-18
SE7501420L (sv) 1975-08-15
JPS50115832A (xx) 1975-09-10
JPS5925219B2 (ja) 1984-06-15
IL46565A (en) 1977-12-30
CH581852A5 (xx) 1976-11-15
IT1027651B (it) 1978-12-20
DK142634B (da) 1980-12-01

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: INTERNATIONAL BUSINESS MACHINES CORP.

Effective date: 19840113