CA985733A - Photoconductor discharge shutter assembly - Google Patents

Photoconductor discharge shutter assembly

Info

Publication number
CA985733A
CA985733A CA167,867A CA167867A CA985733A CA 985733 A CA985733 A CA 985733A CA 167867 A CA167867 A CA 167867A CA 985733 A CA985733 A CA 985733A
Authority
CA
Canada
Prior art keywords
shutter assembly
discharge shutter
photoconductor discharge
photoconductor
assembly
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
CA167,867A
Other versions
CA167867S (en
Inventor
Frederick W. Johnson
David K. Gibson
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of CA985733A publication Critical patent/CA985733A/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
    • 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
    • G03G2215/0463—Exposure lamp used for scanning
CA167,867A 1972-04-12 1973-03-28 Photoconductor discharge shutter assembly Expired CA985733A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24313772A 1972-04-12 1972-04-12

Publications (1)

Publication Number Publication Date
CA985733A true CA985733A (en) 1976-03-16

Family

ID=22917482

Family Applications (1)

Application Number Title Priority Date Filing Date
CA167,867A Expired CA985733A (en) 1972-04-12 1973-03-28 Photoconductor discharge shutter assembly

Country Status (6)

Country Link
US (1) US3724942A (en)
JP (1) JPS5231741B2 (en)
CA (1) CA985733A (en)
FR (1) FR2179732B1 (en)
GB (1) GB1374564A (en)
IT (1) IT978354B (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133609A (en) * 1974-05-15 1979-01-09 Minolta Camera Kabushiki Kaisha Charge-erasing device for electrophotographic copying apparatus
US4008954A (en) * 1974-07-15 1977-02-22 Minolta Camera Kabushiki Kaisha Device for extinguishing unnecessary electrostatic charge in electrophotographic copier
JPS5123724A (en) * 1974-08-06 1976-02-25 Ricoh Kk Fukushakitoniokeru suritsutoshomeisochi
US3998541A (en) * 1975-04-18 1976-12-21 Eastman Kodak Company Illumination arrangement providing for interframe flashdown
US3967896A (en) * 1975-05-14 1976-07-06 Rank Xerox Ltd. Variable edge fadeout apparatus for electrostatic reproduction machines
DE2528925A1 (en) * 1975-06-28 1977-01-13 Agfa Gevaert Ag PHOTOCOPYER
US4023896A (en) * 1975-08-07 1977-05-17 Addressograph Multigraph Corporation Clean margin mechanism for electrostatic copiers
NL7510270A (en) * 1975-09-01 1977-03-03 Oce Van Der Grinten Nv METHOD AND MEANS FOR AVOIDING EDGE SHADOW EFFECTS IN EPISCOPIC ILLUMINATION OF AN ORIGINAL.
JPS5527885Y2 (en) * 1975-09-09 1980-07-03
JPS5328430A (en) * 1976-08-30 1978-03-16 Olympus Optical Co Ltd Shutter o pen-close mechanism for electro-photographic device
US4166692A (en) * 1976-09-14 1979-09-04 Minolta Camera Kabushiki Kaisha Protection and safety device for a photocopying machine
US4086008A (en) * 1976-11-04 1978-04-25 Oce-Van Der Grinten, N.V. Electrophotographic copying apparatus with device for exposing imaged photoconductive plate
JPS53132348A (en) * 1977-04-22 1978-11-18 Minolta Camera Co Ltd Destaticizing method for image non-forming portion of photoreceptor of electrophotographic copier
US4179213A (en) * 1978-04-10 1979-12-18 International Business Machines Corporation Vector pinning in an electrophotographic machine
US4183657A (en) * 1978-04-10 1980-01-15 International Business Machines Corporation Dynamic reference for an image quality control system
US4178095A (en) * 1978-04-10 1979-12-11 International Business Machines Corporation Abnormally low reflectance photoconductor sensing system
JPS5526520U (en) * 1978-08-07 1980-02-20
JPS55135867A (en) * 1979-04-10 1980-10-23 Ricoh Co Ltd Optical device of copying machine
JPS566270A (en) * 1979-06-28 1981-01-22 Sharp Corp Electrophotographic apparatus
GB2058400B (en) * 1979-07-16 1983-12-07 Canon Kk Electrophotographic image forming apparatus
GB2132942B (en) * 1982-09-30 1987-07-29 Canon Kk Detachable parts of image-forming apparatus
US4505575A (en) * 1983-08-26 1985-03-19 Xerox Corporation Non-image erase system for reproduction machines
US5365323A (en) * 1991-09-19 1994-11-15 Canon Kabushiki Kaisha Image recording device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3375806A (en) * 1965-05-06 1968-04-02 Xerox Corp Xerographic donor development apparatus
US3556655A (en) * 1968-01-22 1971-01-19 Addressograph Multigraph Photoelectrostatic copying machine
US3540806A (en) * 1968-03-06 1970-11-17 Xerox Corp Half-toning method and apparatus for solid area coverage
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

Also Published As

Publication number Publication date
DE2315763B2 (en) 1976-10-28
FR2179732B1 (en) 1976-10-08
GB1374564A (en) 1974-11-20
IT978354B (en) 1974-09-20
JPS4911139A (en) 1974-01-31
FR2179732A1 (en) 1973-11-23
DE2315763A1 (en) 1973-10-25
JPS5231741B2 (en) 1977-08-17
US3724942A (en) 1973-04-03

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