DE3421255C2 - Elektrophotographisches Kopiergerät - Google Patents

Elektrophotographisches Kopiergerät

Info

Publication number
DE3421255C2
DE3421255C2 DE3421255A DE3421255A DE3421255C2 DE 3421255 C2 DE3421255 C2 DE 3421255C2 DE 3421255 A DE3421255 A DE 3421255A DE 3421255 A DE3421255 A DE 3421255A DE 3421255 C2 DE3421255 C2 DE 3421255C2
Authority
DE
Germany
Prior art keywords
light source
photoreceptor
areas
original
control arrangement
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
Application number
DE3421255A
Other languages
German (de)
English (en)
Other versions
DE3421255A1 (de
Inventor
Katsuyoshi Osaka Fujiwara
Hiroshi Nara Uchiyama
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Publication of DE3421255A1 publication Critical patent/DE3421255A1/de
Application granted granted Critical
Publication of DE3421255C2 publication Critical patent/DE3421255C2/de
Expired 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
DE3421255A 1983-06-10 1984-06-07 Elektrophotographisches Kopiergerät Expired DE3421255C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58104709A JPS59228680A (ja) 1983-06-10 1983-06-10 電子写真複写機

Publications (2)

Publication Number Publication Date
DE3421255A1 DE3421255A1 (de) 1984-12-13
DE3421255C2 true DE3421255C2 (de) 1987-03-05

Family

ID=14388005

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3421255A Expired DE3421255C2 (de) 1983-06-10 1984-06-07 Elektrophotographisches Kopiergerät

Country Status (3)

Country Link
US (1) US4593989A (US20090177143A1-20090709-C00008.png)
JP (1) JPS59228680A (US20090177143A1-20090709-C00008.png)
DE (1) DE3421255C2 (US20090177143A1-20090709-C00008.png)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6218529A (ja) * 1985-07-17 1987-01-27 Toshiba Corp 画像形成装置
US4870457A (en) * 1985-10-11 1989-09-26 Sharp Kabushiki Kaisha Electrophotographic copying machine with device for eliminating unwanted black areas
JPS62166373A (ja) * 1986-01-18 1987-07-22 Sharp Corp 複写機
JPS6396561U (US20090177143A1-20090709-C00008.png) * 1986-12-12 1988-06-22
JPS6375766A (ja) * 1987-09-17 1988-04-06 Minolta Camera Co Ltd 合成モードを備えた複写機
JPH01167777A (ja) * 1987-12-23 1989-07-03 Minolta Camera Co Ltd 複写機
JPH06175471A (ja) * 1992-12-03 1994-06-24 Ricoh Co Ltd 画像形成装置
JPH1184914A (ja) * 1997-09-12 1999-03-30 Toshiba Corp 画像形成装置
US6456732B1 (en) * 1998-09-11 2002-09-24 Hewlett-Packard Company Automatic rotation, cropping and scaling of images for printing

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5119756B1 (US20090177143A1-20090709-C00008.png) * 1970-06-30 1976-06-19
JPS4912829A (US20090177143A1-20090709-C00008.png) * 1972-04-17 1974-02-04
US3860338A (en) * 1973-01-15 1975-01-14 Xerox Corp Adjustable fadeout control
IT1055822B (it) * 1976-01-20 1982-01-11 Olivetti E C Spa Macchina copiatrice elettrofotografica
US4256400A (en) * 1977-10-08 1981-03-17 Canon Kabushiki Kaisha Copying machine provided with means for selectively setting original base line
JPS5492261A (en) * 1977-12-29 1979-07-21 Konishiroku Photo Ind Co Ltd Destaticizing device in electrophotographic copier
JPS554073A (en) * 1978-06-26 1980-01-12 Konishiroku Photo Ind Co Ltd Original position assignment mechanism of information compound recorder
JPS5584957A (en) * 1978-12-13 1980-06-26 Konishiroku Photo Ind Co Ltd Electrophotographic copier which permit combined copying with electric signal image
JPS57150859A (en) * 1981-03-13 1982-09-17 Canon Inc Copying device

Also Published As

Publication number Publication date
US4593989A (en) 1986-06-10
DE3421255A1 (de) 1984-12-13
JPS59228680A (ja) 1984-12-22

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: PATENTANWAELTE MUELLER & HOFFMANN, 81667 MUENCHEN