CA1035004A - Copier with leading edge image control - Google Patents

Copier with leading edge image control

Info

Publication number
CA1035004A
CA1035004A CA217,166A CA217166A CA1035004A CA 1035004 A CA1035004 A CA 1035004A CA 217166 A CA217166 A CA 217166A CA 1035004 A CA1035004 A CA 1035004A
Authority
CA
Canada
Prior art keywords
copier
leading edge
image control
edge image
control
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
CA217,166A
Other languages
French (fr)
Other versions
CA217166S (en
Inventor
Sterritt R. Fuller
Howard E. Munzel
Carl A Queener
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 CA1035004A publication Critical patent/CA1035004A/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
    • G03G2215/0448—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
    • 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)
    • G03G2215/048—Technical-purpose-oriented image area changes
    • G03G2215/0482—Toner-free areas produced
    • G03G2215/0485—Avoiding problems in standard processing steps, such as transfer and fixing
    • 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)
    • G03G2215/0492—Without changing the charge image

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
CA217,166A 1974-02-14 1974-12-31 Copier with leading edge image control Expired CA1035004A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00442533A US3834807A (en) 1974-02-14 1974-02-14 Copier with leading edge image control

Publications (1)

Publication Number Publication Date
CA1035004A true CA1035004A (en) 1978-07-18

Family

ID=23757173

Family Applications (1)

Application Number Title Priority Date Filing Date
CA217,166A Expired CA1035004A (en) 1974-02-14 1974-12-31 Copier with leading edge image control

Country Status (13)

Country Link
US (1) US3834807A (en)
JP (1) JPS5925219B2 (en)
BE (1) BE824343A (en)
CA (1) CA1035004A (en)
CH (1) CH581852A5 (en)
DE (1) DE2505833C2 (en)
DK (1) DK142634B (en)
FR (1) FR2261558B1 (en)
GB (1) GB1447819A (en)
IL (1) IL46565A (en)
IT (1) IT1027651B (en)
NL (1) NL7500896A (en)
SE (1) SE391591B (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50122263A (en) * 1974-02-19 1975-09-25
JPS5123724A (en) * 1974-08-06 1976-02-25 Ricoh Kk Fukushakitoniokeru suritsutoshomeisochi
JPS5173434A (en) * 1974-12-23 1976-06-25 Canon Kk Rokosochi
US3998541A (en) * 1975-04-18 1976-12-21 Eastman Kodak Company Illumination arrangement providing for interframe flashdown
NL7507493A (en) * 1975-06-24 1976-12-28 Oce Van Der Grinten Nv COPIER.
US4046471A (en) * 1975-11-03 1977-09-06 International Business Machines Corporation Dual mode electrophotographic apparatus having dual function printing beam
US4118119A (en) * 1976-09-02 1978-10-03 Xerox Corporation Facetted edge fadeout reflector
US4162845A (en) * 1977-09-15 1979-07-31 Xerox Corporation Copier for greater than standard length documents
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
US4255042A (en) * 1979-03-26 1981-03-10 International Business Machines Corporation Light pipe for accurate erasure of photoconductor charge
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
CA1173890A (en) * 1980-08-28 1984-09-04 John H. Dodge Control of copier start-up operations
US4463284A (en) * 1981-07-28 1984-07-31 Konishiroku Photo Industry Co., Ltd. Method and apparatus for controlling luminous intensity of fluorescent lamp of reproducing apparatus
JPS5823033A (en) * 1981-08-03 1983-02-10 Fuji Xerox Co Ltd Electrophotographic method
DE3334362A1 (en) * 1982-09-25 1984-03-29 Canon K.K., Tokyo IMAGE GENERATION DEVICE
JPS5968728A (en) * 1982-10-12 1984-04-18 Canon Inc Detecting device of original
DE3341774C3 (en) * 1982-11-20 1994-09-01 Canon Kk Device for the partial discharge of a photoconductive recording material
US4505575A (en) * 1983-08-26 1985-03-19 Xerox Corporation Non-image erase system for reproduction machines
US4655579A (en) * 1984-08-30 1987-04-07 Ricoh Company, Ltd. Multicolored image forming apparatus
US4725868A (en) * 1985-06-17 1988-02-16 Mita Industrial Co., Ltd. Electrostatic copying machine
JPS63274973A (en) * 1987-05-06 1988-11-11 Ricoh Co Ltd Eraser lighting controller for copying machine
JPS63194616U (en) * 1987-05-30 1988-12-14
JPH01198770A (en) * 1987-10-16 1989-08-10 Ricoh Co Ltd Controller for copying machine
US4914483A (en) * 1989-04-17 1990-04-03 Eastman Kodak Company Electrostatographic transfer with artifact suppression
JP3162358B2 (en) * 1989-04-30 2001-04-25 株式会社リコー Digital copier
JP3089133B2 (en) * 1993-05-18 2000-09-18 東北リコー株式会社 Image processing device
US5802215A (en) * 1996-12-17 1998-09-01 Xerox Corporation Quadrant-based density detection for lead edge lightening

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3135179A (en) * 1959-04-02 1964-06-02 Xerox Corp Xerographic apparatus
BE793559A (en) * 1971-12-30 1973-06-29 Xerox Corp ELECTROSTATOGRAPHIC MACHINE INCLUDING AN EXPOSURE PRE-DEVELOPMENT DEVICE

Also Published As

Publication number Publication date
BE824343A (en) 1975-05-02
SE7501420L (en) 1975-08-15
CH581852A5 (en) 1976-11-15
JPS5925219B2 (en) 1984-06-15
IL46565A0 (en) 1975-04-25
DK142634B (en) 1980-12-01
DE2505833C2 (en) 1982-12-02
US3834807A (en) 1974-09-10
DE2505833A1 (en) 1975-08-28
FR2261558A1 (en) 1975-09-12
SE391591B (en) 1977-02-21
IL46565A (en) 1977-12-30
FR2261558B1 (en) 1978-12-22
GB1447819A (en) 1976-09-02
DK142634C (en) 1981-08-03
IT1027651B (en) 1978-12-20
JPS50115832A (en) 1975-09-10
DK50575A (en) 1975-10-13
NL7500896A (en) 1975-08-18

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