JPS56149063A - Method for matching original in electrophotographic copying - Google Patents

Method for matching original in electrophotographic copying

Info

Publication number
JPS56149063A
JPS56149063A JP2299280A JP2299280A JPS56149063A JP S56149063 A JPS56149063 A JP S56149063A JP 2299280 A JP2299280 A JP 2299280A JP 2299280 A JP2299280 A JP 2299280A JP S56149063 A JPS56149063 A JP S56149063A
Authority
JP
Japan
Prior art keywords
series
color
colors
light
difference
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.)
Pending
Application number
JP2299280A
Other languages
Japanese (ja)
Inventor
Yutaka Inoue
Yoji Akiyama
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.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co Ltd
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 Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP2299280A priority Critical patent/JPS56149063A/en
Publication of JPS56149063A publication Critical patent/JPS56149063A/en
Pending 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
    • 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
    • G03G15/043—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 controlling illumination or exposure
    • G03G15/0435—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 controlling illumination or exposure by introducing an optical element in the optical path, e.g. a filter

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

PURPOSE:To reduce the difference in copying density due to color difference, by correcting the difference in the sensitivity of a photosensitive drum due to color difference in characters or the like on an original in electrophotographic copying using a filter for transmitting or absorbing the wavelength region of that color. CONSTITUTION:The spectrum of a white light is broadly divided into the 3 series of B (blue), G (green), and R(red). If colors incapable of being sharply copied are, for example, B and R series, the copy density can be raised by using a filter for transmitting the light of G series colors, and intentionally attenuating the lights of B and R series. When colors of B series are not easily copied and colors of G, R series are easily copied, the copy density on the area of R series color is made somewhat lower than that on the area of G series light by using a filter for transmitting the light of R series color.
JP2299280A 1980-02-26 1980-02-26 Method for matching original in electrophotographic copying Pending JPS56149063A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2299280A JPS56149063A (en) 1980-02-26 1980-02-26 Method for matching original in electrophotographic copying

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2299280A JPS56149063A (en) 1980-02-26 1980-02-26 Method for matching original in electrophotographic copying

Publications (1)

Publication Number Publication Date
JPS56149063A true JPS56149063A (en) 1981-11-18

Family

ID=12098024

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2299280A Pending JPS56149063A (en) 1980-02-26 1980-02-26 Method for matching original in electrophotographic copying

Country Status (1)

Country Link
JP (1) JPS56149063A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4925935A (en) * 1972-06-22 1974-03-07

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4925935A (en) * 1972-06-22 1974-03-07

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