CA1037100A - Electrostatography - Google Patents

Electrostatography

Info

Publication number
CA1037100A
CA1037100A CA196,172A CA196172A CA1037100A CA 1037100 A CA1037100 A CA 1037100A CA 196172 A CA196172 A CA 196172A CA 1037100 A CA1037100 A CA 1037100A
Authority
CA
Canada
Prior art keywords
plate
light
discharge
zones
exposure
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
CA196,172A
Other languages
English (en)
French (fr)
Other versions
CA196172S (en
Inventor
Edric R. Brooke
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.)
Xerox Corp
Original Assignee
Xerox 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 Xerox Corp filed Critical Xerox Corp
Application granted granted Critical
Publication of CA1037100A publication Critical patent/CA1037100A/en
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
    • G03G2215/0431—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
    • G03G2215/0434—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
    • G03G2215/0434—Parameters defining the non-image area to be cleaned
    • G03G2215/0446—Magnification degree
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
CA196,172A 1973-03-30 1974-03-27 Electrostatography Expired CA1037100A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1556473A GB1416062A (en) 1973-03-30 1973-03-30 Electrostatography

Publications (1)

Publication Number Publication Date
CA1037100A true CA1037100A (en) 1978-08-22

Family

ID=10061375

Family Applications (1)

Application Number Title Priority Date Filing Date
CA196,172A Expired CA1037100A (en) 1973-03-30 1974-03-27 Electrostatography

Country Status (6)

Country Link
US (1) US3912387A (enrdf_load_stackoverflow)
JP (1) JPS5030538A (enrdf_load_stackoverflow)
CA (1) CA1037100A (enrdf_load_stackoverflow)
DE (1) DE2415390C3 (enrdf_load_stackoverflow)
FR (1) FR2223734B1 (enrdf_load_stackoverflow)
GB (1) GB1416062A (enrdf_load_stackoverflow)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JPS5281267A (en) * 1975-12-25 1977-07-07 Chubu Shiriyou Kk Process for producing pellet
IT1055822B (it) * 1976-01-20 1982-01-11 Olivetti E C Spa Macchina copiatrice elettrofotografica
US4057342A (en) * 1976-05-27 1977-11-08 Xerox Corporation Illumination slit for a reproducing machine
JPS5335527U (enrdf_load_stackoverflow) * 1976-09-01 1978-03-29
US4105320A (en) * 1977-01-05 1978-08-08 Xerox Corporation Transfer of conductive particles
JPS53129639A (en) * 1977-04-19 1978-11-11 Mita Industrial Co Ltd Method of and device for electrostatic copying
US4256400A (en) * 1977-10-08 1981-03-17 Canon Kabushiki Kaisha Copying machine provided with means for selectively setting original base line
JPS5491239A (en) * 1977-12-28 1979-07-19 Konishiroku Photo Ind Co Ltd Destaticizer of electrophotographic copier
JPS5494038A (en) * 1978-01-07 1979-07-25 Ricoh Co Ltd Copier for zerography
JPS5529950A (en) * 1978-08-24 1980-03-03 Nisshin Oil Mills Ltd:The Solid feed
US4791494A (en) * 1979-02-23 1988-12-13 Savin Corporation Multiple variable light source printer
US4255042A (en) * 1979-03-26 1981-03-10 International Business Machines Corporation Light pipe for accurate erasure of photoconductor charge
JPS55138754A (en) * 1979-04-18 1980-10-29 Ricoh Co Ltd Original pattern detection control system of electrophotographic copier
US4474453A (en) * 1979-04-18 1984-10-02 Ricoh Company, Ltd. Electrostatic copying apparatus
JPS5613914A (en) * 1979-07-13 1981-02-10 Nitsutoo Seisakusho Kk Counter for unit type reception desk
JPS5674259A (en) * 1979-11-22 1981-06-19 Olympus Optical Co Ltd Electrophotographic apparatus
JPS5968728A (ja) * 1982-10-12 1984-04-18 Canon Inc 原稿検出装置
JPS5993469A (ja) * 1982-11-18 1984-05-29 Matsushita Electric Ind Co Ltd 電子写真装置
JPS5993440A (ja) * 1982-11-18 1984-05-29 Matsushita Electric Ind Co Ltd 電子写真装置
DE3341774C3 (de) * 1982-11-20 1994-09-01 Canon Kk Vorrichtung zur bereichsweisen Entladung eines photoleitfähigen Aufzeichnungsmaterials
US4564286A (en) * 1983-06-09 1986-01-14 Xerox Corporation Illumination device
US4811047A (en) * 1983-08-25 1989-03-07 Canon Kabushiki Kaisha Image forming apparatus with means for recognizing an original condition
DE3442028A1 (de) * 1983-11-17 1985-05-30 Canon K.K., Tokio/Tokyo Geraet zur erzeugung von abbildungen von positiv- und negativ-originalen
JPS60182540U (ja) * 1984-05-14 1985-12-04 カヤバ工業株式会社 油圧緩衝器
DE3522089A1 (de) * 1984-06-21 1986-01-02 Canon K.K., Tokio/Tokyo Bildreproduktionsgeraet
US4655580A (en) * 1984-11-06 1987-04-07 Kabushiki Kaisha Toshiba Image forming apparatus with image forming area selection
JPS6236681A (ja) * 1985-08-12 1987-02-17 Toshiba Corp 画像形成装置
JPS62143066A (ja) * 1985-12-17 1987-06-26 Fuji Xerox Co Ltd 電子写真式複写機
US4839696A (en) * 1986-02-28 1989-06-13 Canon Kabushiki Kaisha Image recording apparatus for recording a selected portion of an original image
JPS62201479A (ja) * 1986-02-28 1987-09-05 Mita Ind Co Ltd 画像形成装置
JPS62248459A (ja) * 1986-04-23 1987-10-29 Shiraishi Calcium Kk ペレツト伏ミネラル混合飼料
JPS62248460A (ja) * 1986-04-23 1987-10-29 Shiraishi Calcium Kk ペレット状ミネラル混合飼料

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1248945A (en) * 1967-12-26 1971-10-06 Rank Xerox Ltd Electrophotography
US3612682A (en) * 1968-06-07 1971-10-12 Addressograph Multigraph Copier-duplicator machine providing for photoelectrostatic master from which copies are made
JPS5018394B1 (enrdf_load_stackoverflow) * 1970-01-10 1975-06-28
US3860338A (en) * 1973-01-15 1975-01-14 Xerox Corp Adjustable fadeout control

Also Published As

Publication number Publication date
FR2223734A1 (enrdf_load_stackoverflow) 1974-10-25
US3912387A (en) 1975-10-14
DE2415390C3 (de) 1981-06-25
JPS5030538A (enrdf_load_stackoverflow) 1975-03-26
DE2415390B2 (de) 1980-10-30
GB1416062A (en) 1975-12-03
FR2223734B1 (enrdf_load_stackoverflow) 1977-03-04
DE2415390A1 (de) 1974-10-10

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