CA1025513A - Pre-development exposure assembly - Google Patents

Pre-development exposure assembly

Info

Publication number
CA1025513A
CA1025513A CA155,145A CA155145A CA1025513A CA 1025513 A CA1025513 A CA 1025513A CA 155145 A CA155145 A CA 155145A CA 1025513 A CA1025513 A CA 1025513A
Authority
CA
Canada
Prior art keywords
exposure assembly
development exposure
development
assembly
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
CA155,145A
Other languages
English (en)
French (fr)
Other versions
CA155145S (en
Inventor
Karl E. Liechty
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 CA1025513A publication Critical patent/CA1025513A/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
    • G03G2215/0443—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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
CA155,145A 1971-12-30 1972-10-30 Pre-development exposure assembly Expired CA1025513A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00214244A US3809472A (en) 1971-12-30 1971-12-30 Pre-development exposure assembly

Publications (1)

Publication Number Publication Date
CA1025513A true CA1025513A (en) 1978-01-31

Family

ID=22798337

Family Applications (1)

Application Number Title Priority Date Filing Date
CA155,145A Expired CA1025513A (en) 1971-12-30 1972-10-30 Pre-development exposure assembly

Country Status (21)

Country Link
US (1) US3809472A (en, 2012)
JP (1) JPS5756072B2 (en, 2012)
AR (1) AR196103A1 (en, 2012)
AU (1) AU466757B2 (en, 2012)
BE (1) BE793559A (en, 2012)
BR (1) BR7208623D0 (en, 2012)
CA (1) CA1025513A (en, 2012)
CH (1) CH552841A (en, 2012)
CS (1) CS175444B2 (en, 2012)
DD (1) DD102825A5 (en, 2012)
DE (1) DE2260555B2 (en, 2012)
DK (1) DK134831B (en, 2012)
ES (1) ES410172A1 (en, 2012)
FR (1) FR2167109A5 (en, 2012)
GB (1) GB1415170A (en, 2012)
IL (1) IL41129A (en, 2012)
IT (1) IT973319B (en, 2012)
NL (1) NL7217766A (en, 2012)
SE (1) SE375388B (en, 2012)
SU (1) SU902680A3 (en, 2012)
ZA (1) ZA729132B (en, 2012)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997259A (en) * 1973-11-08 1976-12-14 Xerox Corporation Apparatus for reducing image background in electrostatic reproduction machines
US3834807A (en) * 1974-02-14 1974-09-10 Ibm Copier with leading edge image control
JPS5444595Y2 (en, 2012) * 1974-04-29 1979-12-21
JPS51147443U (en, 2012) * 1975-05-21 1976-11-26
US4046471A (en) * 1975-11-03 1977-09-06 International Business Machines Corporation Dual mode electrophotographic apparatus having dual function printing beam
IT1055822B (it) * 1976-01-20 1982-01-11 Olivetti E C Spa Macchina copiatrice elettrofotografica
JPS52155553U (en, 2012) * 1976-05-20 1977-11-25
JPS52155552U (en, 2012) * 1976-05-20 1977-11-25
JPS563715Y2 (en, 2012) * 1976-07-13 1981-01-27
JPS53119943U (en, 2012) * 1977-03-01 1978-09-25
JPS53129639A (en) * 1977-04-19 1978-11-11 Mita Industrial Co Ltd Method of and device for electrostatic copying
JPS5494038A (en) * 1978-01-07 1979-07-25 Ricoh Co Ltd Copier for zerography
US4265556A (en) * 1978-12-21 1981-05-05 International Business Machines Corporation Apparatus for setting proportional margins based upon the width of a scanned sheet of paper
US4272204A (en) * 1978-12-21 1981-06-09 International Business Machines Corporation Automatic margin determining apparatus for a scanned sheet of paper
US4255042A (en) * 1979-03-26 1981-03-10 International Business Machines Corporation Light pipe for accurate erasure of photoconductor charge
JPS5674259A (en) * 1979-11-22 1981-06-19 Olympus Optical Co Ltd Electrophotographic apparatus
US4279504A (en) * 1979-12-26 1981-07-21 International Business Machines Corporation Copier and multifunction paper cassette
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
JPS60140287A (ja) * 1983-12-28 1985-07-25 Mita Ind Co Ltd 除電ランプ装置
US4611906A (en) * 1985-01-22 1986-09-16 Sanyo Electric Co., Ltd. Electrophotographic copying apparatus
NL8502186A (nl) * 1985-08-05 1987-03-02 Oce Nederland Bv Kopieerapparaat voorzien van instelbare kadreermiddelen.
US4745438A (en) * 1986-09-16 1988-05-17 Xerox Corporation Automatic copier show-around erase system

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2927516A (en) * 1955-12-21 1960-03-08 Ibm Record card controlled electro-graphic printer
US3122455A (en) * 1960-12-30 1964-02-25 Xerox Corp Xerographic toner dispenser
GB1181214A (en) * 1966-04-07 1970-02-11 Charles William Clark Photographic Machines
GB1248945A (en) * 1967-12-26 1971-10-06 Rank Xerox Ltd Electrophotography
US3708161A (en) * 1968-01-22 1973-01-02 Addressograph Multigraph Photoelectrostatic copying machine
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
US3612682A (en) * 1968-06-07 1971-10-12 Addressograph Multigraph Copier-duplicator machine providing for photoelectrostatic master from which copies are made
BE748854A (fr) * 1969-04-16 1970-09-16 Fuji Photo Film Co Ltd Appareil electrophotographique
JPS5018394B1 (en, 2012) * 1970-01-10 1975-06-28
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
JPS4943337B1 (en, 2012) * 1970-09-03 1974-11-20
US3724940A (en) * 1970-12-07 1973-04-03 Ricoh Kk Electrophotographic copying apparatus with means for erasing marginal images
US3888644A (en) * 1973-12-03 1975-06-10 Black Sivalls & Bryson Inc Filter-separator apparatus

Also Published As

Publication number Publication date
US3809472A (en) 1974-05-07
GB1415170A (en) 1975-11-26
SE375388B (en, 2012) 1975-04-14
ZA729132B (en) 1973-10-31
DK134831B (da) 1977-01-24
IT973319B (it) 1974-06-10
AR196103A1 (es) 1973-11-30
BE793559A (fr) 1973-06-29
DE2260555B2 (de) 1978-12-14
IL41129A0 (en) 1973-02-28
CS175444B2 (en, 2012) 1977-05-31
DE2260555A1 (de) 1973-07-05
ES410172A1 (es) 1976-01-01
JPS4878940A (en, 2012) 1973-10-23
AU5058572A (en) 1974-07-04
NL7217766A (en, 2012) 1973-07-03
CH552841A (de) 1974-08-15
JPS5756072B2 (en, 2012) 1982-11-27
DD102825A5 (en, 2012) 1973-12-20
IL41129A (en) 1977-01-31
SU902680A3 (ru) 1982-01-30
AU466757B2 (en) 1974-07-04
BR7208623D0 (pt) 1973-09-13
FR2167109A5 (en, 2012) 1973-08-17

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