DE3738635C2 - - Google Patents

Info

Publication number
DE3738635C2
DE3738635C2 DE3738635A DE3738635A DE3738635C2 DE 3738635 C2 DE3738635 C2 DE 3738635C2 DE 3738635 A DE3738635 A DE 3738635A DE 3738635 A DE3738635 A DE 3738635A DE 3738635 C2 DE3738635 C2 DE 3738635C2
Authority
DE
Germany
Prior art keywords
mode
contour
image
voltage
grid
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
Application number
DE3738635A
Other languages
German (de)
English (en)
Other versions
DE3738635A1 (de
Inventor
Tateki Oka
Naoki Toyohashi Aichi Jp Toyoshi
Tomoaki Toyokawa Jp Yokoyama
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.)
Minolta Co Ltd
Original Assignee
Minolta Co Ltd
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
Priority claimed from JP27060286A external-priority patent/JPS63124062A/ja
Priority claimed from JP61270601A external-priority patent/JPS63124061A/ja
Priority claimed from JP61270603A external-priority patent/JPS63124063A/ja
Priority claimed from JP61270600A external-priority patent/JPS63124060A/ja
Priority claimed from JP62197026A external-priority patent/JPS6440859A/ja
Priority claimed from JP19702487A external-priority patent/JPS6440857A/ja
Priority claimed from JP62197025A external-priority patent/JPS6440858A/ja
Application filed by Minolta Co Ltd filed Critical Minolta Co Ltd
Publication of DE3738635A1 publication Critical patent/DE3738635A1/de
Application granted granted Critical
Publication of DE3738635C2 publication Critical patent/DE3738635C2/de
Granted 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
    • 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
    • G03G15/04027—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 and forming half-tone image

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Color Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
DE19873738635 1986-11-13 1987-11-13 Elektrofotografisches kopiergeraet Granted DE3738635A1 (de)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP27060286A JPS63124062A (ja) 1986-11-13 1986-11-13 電子写真複写装置
JP61270601A JPS63124061A (ja) 1986-11-13 1986-11-13 電子写真複写装置
JP61270603A JPS63124063A (ja) 1986-11-13 1986-11-13 電子写真複写装置
JP61270600A JPS63124060A (ja) 1986-11-13 1986-11-13 電子写真複写装置
JP62197026A JPS6440859A (en) 1987-08-06 1987-08-06 Electrophotographic copying device
JP19702487A JPS6440857A (en) 1987-08-06 1987-08-06 Electrophotographic copying device
JP62197025A JPS6440858A (en) 1987-08-06 1987-08-06 Electrophotographic copying device

Publications (2)

Publication Number Publication Date
DE3738635A1 DE3738635A1 (de) 1988-05-26
DE3738635C2 true DE3738635C2 (enExample) 1990-06-07

Family

ID=27566484

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873738635 Granted DE3738635A1 (de) 1986-11-13 1987-11-13 Elektrofotografisches kopiergeraet

Country Status (2)

Country Link
US (1) US4835566A (enExample)
DE (1) DE3738635A1 (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4912507A (en) * 1987-09-21 1990-03-27 Minolta Camera Kabushiki Kaisha Electrophotographic copying apparatus for forming an image without any unnecessary shadow region
DE3837064A1 (de) * 1987-10-31 1989-05-18 Minolta Camera Kk Kopiergeraet
US4937627A (en) * 1988-01-13 1990-06-26 Minolta Camera Kabushiki Kaisha Image forming apparatus having toner replenishing device interchangeable with a developing unit
US4963938A (en) * 1988-06-10 1990-10-16 Ricoh Company, Ltd. Toner cartridge for an image forming apparatus
US5385801A (en) * 1990-07-12 1995-01-31 Minolta Camera Kabushiki Kaisha Method of developing electrostatic latent image

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960445A (en) * 1974-02-13 1976-06-01 Xerox Corporation Color highlighting electrophotographic printing machine
US3967891A (en) * 1975-04-14 1976-07-06 Xerox Corporation Imaging system for electrostatic reproduction machines
JPS51134635A (en) * 1975-05-16 1976-11-22 Minolta Camera Co Ltd Contour line describing method for electro-photography
US4014607A (en) * 1976-03-03 1977-03-29 Xerox Corporation Removable screening system for a transparency reproduction machine
JPS5430833A (en) * 1977-08-12 1979-03-07 Canon Inc Electrophotographic method
DE2839076C3 (de) * 1977-09-09 1998-01-29 Canon Kk Kopiergerät
JPS5911113B2 (ja) * 1979-04-20 1984-03-13 富士通株式会社 電子写真式記録装置
GB2075224B (en) * 1980-03-13 1984-11-07 Canon Kk Potential control in electrophotographic process
JPS57137239A (en) * 1981-02-17 1982-08-24 Minolta Camera Co Ltd Automatic paper feeder of copying machine etc.
JPS57202569A (en) * 1981-06-08 1982-12-11 Minolta Camera Co Ltd Electrophotographic copier
JPS58109761U (ja) * 1982-01-22 1983-07-26 ミノルタ株式会社 トナ−飛散防止装置
US4562130A (en) * 1982-09-28 1985-12-31 Minolta Camera Kabushiki Kaisha Method of forming composite images
JPS59155879A (ja) * 1983-02-25 1984-09-05 Fuji Xerox Co Ltd 静電荷除去装置
EP0154042B1 (en) * 1984-02-28 1988-05-04 Agfa-Gevaert N.V. Improvements relating to the production of developed electrostatic images
US4618249A (en) * 1985-06-10 1986-10-21 Eastman Kodak Company Corona-charging apparatus
JPH0722675Y2 (ja) * 1986-07-17 1995-05-24 三洋電機株式会社 電子写真装置

Also Published As

Publication number Publication date
DE3738635A1 (de) 1988-05-26
US4835566A (en) 1989-05-30

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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
8339 Ceased/non-payment of the annual fee