IT1055822B - Macchina copiatrice elettrofotografica - Google Patents

Macchina copiatrice elettrofotografica

Info

Publication number
IT1055822B
IT1055822B IT67123/76A IT6712376A IT1055822B IT 1055822 B IT1055822 B IT 1055822B IT 67123/76 A IT67123/76 A IT 67123/76A IT 6712376 A IT6712376 A IT 6712376A IT 1055822 B IT1055822 B IT 1055822B
Authority
IT
Italy
Prior art keywords
electrophotographic copier
copier machine
machine
electrophotographic
copier
Prior art date
Application number
IT67123/76A
Other languages
English (en)
Original Assignee
Olivetti E C Spa
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 Olivetti E C Spa filed Critical Olivetti E C Spa
Priority to IT67123/76A priority Critical patent/IT1055822B/it
Priority to GB52157/76A priority patent/GB1570702A/en
Priority to US05/757,537 priority patent/US4129378A/en
Priority to FR7701181A priority patent/FR2339192A1/fr
Priority to JP434477A priority patent/JPS52106745A/ja
Priority to DE19772702447 priority patent/DE2702447A1/de
Application granted granted Critical
Publication of IT1055822B publication Critical patent/IT1055822B/it

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
    • G03G2215/0443—Copy medium outline relative to the charge image
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
IT67123/76A 1976-01-20 1976-01-20 Macchina copiatrice elettrofotografica IT1055822B (it)

Priority Applications (6)

Application Number Priority Date Filing Date Title
IT67123/76A IT1055822B (it) 1976-01-20 1976-01-20 Macchina copiatrice elettrofotografica
GB52157/76A GB1570702A (en) 1976-01-20 1976-12-14 Electrophotographic copying machine
US05/757,537 US4129378A (en) 1976-01-20 1977-01-07 Electrophotographic copying machine having a masking device for different copy sheet formats
FR7701181A FR2339192A1 (fr) 1976-01-20 1977-01-17 Machine copieuse electrophotographique
JP434477A JPS52106745A (en) 1976-01-20 1977-01-18 Electrophotographic copying machine
DE19772702447 DE2702447A1 (de) 1976-01-20 1977-01-20 Elektrofotografische kopiermaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT67123/76A IT1055822B (it) 1976-01-20 1976-01-20 Macchina copiatrice elettrofotografica

Publications (1)

Publication Number Publication Date
IT1055822B true IT1055822B (it) 1982-01-11

Family

ID=11299778

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67123/76A IT1055822B (it) 1976-01-20 1976-01-20 Macchina copiatrice elettrofotografica

Country Status (6)

Country Link
US (1) US4129378A (it)
JP (1) JPS52106745A (it)
DE (1) DE2702447A1 (it)
FR (1) FR2339192A1 (it)
GB (1) GB1570702A (it)
IT (1) IT1055822B (it)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4215929A (en) * 1977-09-17 1980-08-05 Canon Kabushiki Kaisha Image forming method and apparatus capable of controlling an electrostatic image formation area
US4256400A (en) * 1977-10-08 1981-03-17 Canon Kabushiki Kaisha Copying machine provided with means for selectively setting original base line
JPS5669666A (en) * 1979-11-12 1981-06-11 Konishiroku Photo Ind Co Ltd Copying machine
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
NL8104461A (nl) * 1981-09-30 1983-04-18 Oce Nederland Bv Belichtingsinrichting.
JPS58162161U (ja) * 1982-04-23 1983-10-28 カシオ計算機株式会社 電子写真複写機の除電装置
JPS59228680A (ja) * 1983-06-10 1984-12-22 Sharp Corp 電子写真複写機
NL8502186A (nl) * 1985-08-05 1987-03-02 Oce Nederland Bv Kopieerapparaat voorzien van instelbare kadreermiddelen.
US4821067A (en) * 1985-10-31 1989-04-11 Kabushiki Kaisha Toshiba Microfilm reader-printer having an image fermation device
US5300985A (en) * 1992-05-29 1994-04-05 Xerox Corporation Multi-function erase lamp
US5459557A (en) * 1992-06-30 1995-10-17 Canon Kabushiki Kaisha Image forming apparatus

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1055781A (fr) * 1949-06-22 1954-02-22 Kodak Pathe Appareil pour la reproduction photographique de documents
US2927516A (en) * 1955-12-21 1960-03-08 Ibm Record card controlled electro-graphic printer
US3751155A (en) * 1971-12-30 1973-08-07 Xerox Corp Pre-development exposure assembly
BE793559A (fr) * 1971-12-30 1973-06-29 Xerox Corp Machine electrostatographique comportant un dispositif de pre-developpement d'exposition
US3792913A (en) * 1972-05-12 1974-02-19 Xerox Corp Xerographic erase mechanism
US3860338A (en) * 1973-01-15 1975-01-14 Xerox Corp Adjustable fadeout control
GB1416062A (en) * 1973-03-30 1975-12-03 Xerox Corp Electrostatography
DE2460544A1 (de) * 1974-02-22 1975-08-28 Xerox Corp Elektrostatisches kopiergeraet

Also Published As

Publication number Publication date
JPS52106745A (en) 1977-09-07
FR2339192B1 (it) 1983-06-10
US4129378A (en) 1978-12-12
FR2339192A1 (fr) 1977-08-19
GB1570702A (en) 1980-07-09
DE2702447A1 (de) 1977-07-21

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