JPS5774756A - Color sensitivity correction device of copying machine - Google Patents

Color sensitivity correction device of copying machine

Info

Publication number
JPS5774756A
JPS5774756A JP55151780A JP15178080A JPS5774756A JP S5774756 A JPS5774756 A JP S5774756A JP 55151780 A JP55151780 A JP 55151780A JP 15178080 A JP15178080 A JP 15178080A JP S5774756 A JPS5774756 A JP S5774756A
Authority
JP
Japan
Prior art keywords
copying machine
filter
correction device
red
sensitivity correction
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
JP55151780A
Other languages
Japanese (ja)
Inventor
Tatsuo Hirono
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP55151780A priority Critical patent/JPS5774756A/en
Publication of JPS5774756A publication Critical patent/JPS5774756A/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
    • 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

  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To obtain a copy emphasized in the red or blue component of an original by inserting a color filter in a light path. CONSTITUTION:A red-cut filter 22 or a blue-cut filter 23 is selectively inserted just before an in-mirror lens 8 in a light path for projecting an original image by pushing a key provided on the upper face of a copying machine. At that time, the ignition phase angle of a triac TRC in the light intensity control circuit of an exposure lamp 4 changes interlocked with the filter insertion, resulting in controlling output of the lamp 4 so as to compensate decrease of the light intensity due to the filter insertion.
JP55151780A 1980-10-29 1980-10-29 Color sensitivity correction device of copying machine Pending JPS5774756A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55151780A JPS5774756A (en) 1980-10-29 1980-10-29 Color sensitivity correction device of copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55151780A JPS5774756A (en) 1980-10-29 1980-10-29 Color sensitivity correction device of copying machine

Publications (1)

Publication Number Publication Date
JPS5774756A true JPS5774756A (en) 1982-05-11

Family

ID=15526131

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55151780A Pending JPS5774756A (en) 1980-10-29 1980-10-29 Color sensitivity correction device of copying machine

Country Status (1)

Country Link
JP (1) JPS5774756A (en)

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