JPS4912829A - - Google Patents

Info

Publication number
JPS4912829A
JPS4912829A JP47037745A JP3774572A JPS4912829A JP S4912829 A JPS4912829 A JP S4912829A JP 47037745 A JP47037745 A JP 47037745A JP 3774572 A JP3774572 A JP 3774572A JP S4912829 A JPS4912829 A JP S4912829A
Authority
JP
Japan
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.)
Pending
Application number
JP47037745A
Other languages
Japanese (ja)
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
Priority to JP47037745A priority Critical patent/JPS4912829A/ja
Priority to GB1355373A priority patent/GB1369776A/en
Priority to DE2316387A priority patent/DE2316387C3/de
Priority to US00348228A priority patent/US3827799A/en
Publication of JPS4912829A publication Critical patent/JPS4912829A/ja
Pending legal-status Critical Current

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
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
    • G03G15/0275—Arrangements for controlling the area of the photoconductor to be charged
    • 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
    • G03G2215/0441—Manual input 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
    • G03G2215/0431—Producing a clean non-image area, i.e. avoiding show-around effects
    • G03G2215/0448—Charge-erasing means for the non-image area
    • G03G2215/046—Charger

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Rotary Presses (AREA)
  • Holders For Sensitive Materials And Originals (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
JP47037745A 1972-04-17 1972-04-17 Pending JPS4912829A (fi)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP47037745A JPS4912829A (fi) 1972-04-17 1972-04-17
GB1355373A GB1369776A (en) 1972-04-17 1973-03-21 Photocopying apparatus
DE2316387A DE2316387C3 (de) 1972-04-17 1973-04-02 Elektrofotografisches Kopiergerät
US00348228A US3827799A (en) 1972-04-17 1973-04-05 Device for preventing development of non-image marginal portions of a photoreceptor in electrophotographic copying apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47037745A JPS4912829A (fi) 1972-04-17 1972-04-17

Publications (1)

Publication Number Publication Date
JPS4912829A true JPS4912829A (fi) 1974-02-04

Family

ID=12506002

Family Applications (1)

Application Number Title Priority Date Filing Date
JP47037745A Pending JPS4912829A (fi) 1972-04-17 1972-04-17

Country Status (4)

Country Link
US (1) US3827799A (fi)
JP (1) JPS4912829A (fi)
DE (1) DE2316387C3 (fi)
GB (1) GB1369776A (fi)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS516732A (ja) * 1974-07-06 1976-01-20 Ricoh Kk Senkorokogataseidenfukushakiniokeru genzohanigenteisochi
JPS5172044U (fi) * 1974-12-04 1976-06-07
JPS5312334A (en) * 1976-07-20 1978-02-03 Oki Electric Ind Co Ltd Light beam printer
JPS5313425A (en) * 1976-07-23 1978-02-07 Oki Electric Ind Co Ltd Optical beam printer
JPS5413360U (fi) * 1977-06-30 1979-01-27
JPS5469438A (en) * 1977-11-14 1979-06-04 Ricoh Co Ltd Electrophotographic apparatus
JPS5499631U (fi) * 1977-12-24 1979-07-13
JPS5494038A (en) * 1978-01-07 1979-07-25 Ricoh Co Ltd Copier for zerography
JPS55127582A (en) * 1979-03-26 1980-10-02 Ibm Electrostatic copier
JPS5793942U (fi) * 1980-11-28 1982-06-09
JPS57105638U (fi) * 1980-12-18 1982-06-29
JPS57160148U (fi) * 1981-04-01 1982-10-07
JPS57163254A (en) * 1981-04-01 1982-10-07 Sharp Corp Electrophotographic copier
JPS57163253A (en) * 1981-04-01 1982-10-07 Sharp Corp Electrophotographic copier
JPS6143038U (ja) * 1976-05-14 1986-03-20 ワルタ−・スペングラ− 印刷機械

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256400A (en) * 1977-10-08 1981-03-17 Canon Kabushiki Kaisha Copying machine provided with means for selectively setting original base line
JPS55121452A (en) * 1979-03-12 1980-09-18 Olympus Optical Co Ltd Electrophotographic apparatus
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
JPS56146155A (en) * 1980-04-15 1981-11-13 Mita Ind Co Ltd Electrostatic copying machine
JPS59228680A (ja) * 1983-06-10 1984-12-22 Sharp Corp 電子写真複写機
DE3601122A1 (de) * 1985-01-18 1986-07-24 Kabushiki Kaisha Toshiba, Kawasaki, Kanagawa Bilderzeugungsgeraet mit bereichswahl und -bestaetigung
JPS61175631A (ja) * 1985-01-30 1986-08-07 Minolta Camera Co Ltd リ−ダ−・プリンタ−
JPS61180265A (ja) * 1985-02-06 1986-08-12 Toshiba Corp 画像形成装置
US4774593A (en) * 1985-04-19 1988-09-27 Sanyo Electric Co., Ltd. Image forming apparatus
US5521675A (en) * 1995-06-28 1996-05-28 Xerox Corporation Annotation system occluding device for an electrophotographic printing apparatus
EP0855051B1 (de) * 1995-10-09 2001-07-04 Océ Printing Systems GmbH Elektrografischer drucker mit einstellbarer koronaeinrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3556655A (en) * 1968-01-22 1971-01-19 Addressograph Multigraph Photoelectrostatic copying machine
US3578970A (en) * 1968-05-03 1971-05-18 Plastic Coating Corp Variable width corona discharge apparatus with means to shield or vary a predetermined length of a corona discharge wire
AU421643B2 (en) * 1968-11-11 1972-02-23 The Commonwealth Of Australia A method of countour charging
JPS4813446B1 (fi) * 1969-03-10 1973-04-27
US3685895A (en) * 1970-05-18 1972-08-22 Opto Graphics Inc Electrophotographic charging easel
US3671121A (en) * 1970-08-05 1972-06-20 Eastman Kodak Co Exposure device for controlling charge on a portion of a charged surface bordering an image frame projected on the charged surface
US3724940A (en) * 1970-12-07 1973-04-03 Ricoh Kk Electrophotographic copying apparatus with means for erasing marginal images
US3751155A (en) * 1971-12-30 1973-08-07 Xerox Corp Pre-development exposure assembly

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS516732A (ja) * 1974-07-06 1976-01-20 Ricoh Kk Senkorokogataseidenfukushakiniokeru genzohanigenteisochi
JPS5820032B2 (ja) * 1974-07-06 1983-04-21 株式会社リコー センコウロコウガタセイデンフクシヤキニオケル ゲンゾウハンイゲンテイソウチ
JPS5172044U (fi) * 1974-12-04 1976-06-07
JPS6143038U (ja) * 1976-05-14 1986-03-20 ワルタ−・スペングラ− 印刷機械
JPS5755144B2 (fi) * 1976-07-20 1982-11-22
JPS5312334A (en) * 1976-07-20 1978-02-03 Oki Electric Ind Co Ltd Light beam printer
JPS5313425A (en) * 1976-07-23 1978-02-07 Oki Electric Ind Co Ltd Optical beam printer
JPS6051709B2 (ja) * 1976-07-23 1985-11-15 沖電気工業株式会社 光ビ−ムプリンタ
JPS5413360U (fi) * 1977-06-30 1979-01-27
JPS5913633Y2 (ja) * 1977-06-30 1984-04-23 株式会社リコー 変倍複写用帯電チャ−ジャ−
JPS5469438A (en) * 1977-11-14 1979-06-04 Ricoh Co Ltd Electrophotographic apparatus
JPS63787B2 (fi) * 1977-11-14 1988-01-08 Ricoh Kk
JPS565098Y2 (fi) * 1977-12-24 1981-02-04
JPS5499631U (fi) * 1977-12-24 1979-07-13
JPS5494038A (en) * 1978-01-07 1979-07-25 Ricoh Co Ltd Copier for zerography
JPS6211347B2 (fi) * 1978-01-07 1987-03-12 Ricoh Kk
JPS55127582A (en) * 1979-03-26 1980-10-02 Ibm Electrostatic copier
JPS5793942U (fi) * 1980-11-28 1982-06-09
JPS57105638U (fi) * 1980-12-18 1982-06-29
JPS57160148U (fi) * 1981-04-01 1982-10-07
JPS57163254A (en) * 1981-04-01 1982-10-07 Sharp Corp Electrophotographic copier
JPS57163253A (en) * 1981-04-01 1982-10-07 Sharp Corp Electrophotographic copier

Also Published As

Publication number Publication date
GB1369776A (en) 1974-10-09
DE2316387B2 (de) 1975-04-17
US3827799A (en) 1974-08-06
DE2316387C3 (de) 1975-11-27
DE2316387A1 (de) 1973-10-25

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