JPS5760348A - Method for adjusting picture density for copying machine - Google Patents

Method for adjusting picture density for copying machine

Info

Publication number
JPS5760348A
JPS5760348A JP55135049A JP13504980A JPS5760348A JP S5760348 A JPS5760348 A JP S5760348A JP 55135049 A JP55135049 A JP 55135049A JP 13504980 A JP13504980 A JP 13504980A JP S5760348 A JPS5760348 A JP S5760348A
Authority
JP
Japan
Prior art keywords
density
picture
copying
detecting
photosensitive drum
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
JP55135049A
Other languages
Japanese (ja)
Inventor
Hiroaki Ueno
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 JP55135049A priority Critical patent/JPS5760348A/en
Publication of JPS5760348A publication Critical patent/JPS5760348A/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

Abstract

PURPOSE:To automaticlly adjust the picture density without using any surface electrometer, by copying a reference density pattern containing density parts which correspond to the blank part and printed part of manuscripts on copying members to be used for detecting density. CONSTITUTION:An endless copying member 22 to be used for detecting density of picture is installed at the position where a photosensitive drum 1 transfers pictures, so that the copying member 22 is stretched between four drive rollers and moves along the direction A. Upon this copying member 22, an electrostatic latent image of a reference density pattern 21 formed on a photosensitive drum 1 is transferred by a transferring charger 16 after the latent image is appeared, and thus, a copied picture 21' of the reference density pattern 21 is formed. Moreover, when it is judged that the detcted density obtained by detecting the picture density of the copied picture 21' reaches a target value, the sequence control of the copying process is completed. Therefore, inconveniences accompanied with the surface electrometer are eliminated and copies of excellent picture quality can always be obtained.
JP55135049A 1980-09-27 1980-09-27 Method for adjusting picture density for copying machine Pending JPS5760348A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55135049A JPS5760348A (en) 1980-09-27 1980-09-27 Method for adjusting picture density for copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55135049A JPS5760348A (en) 1980-09-27 1980-09-27 Method for adjusting picture density for copying machine

Publications (1)

Publication Number Publication Date
JPS5760348A true JPS5760348A (en) 1982-04-12

Family

ID=15142731

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55135049A Pending JPS5760348A (en) 1980-09-27 1980-09-27 Method for adjusting picture density for copying machine

Country Status (1)

Country Link
JP (1) JPS5760348A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057868A (en) * 1983-09-09 1985-04-03 Canon Inc Image density controlling method
JPS6080871A (en) * 1983-10-08 1985-05-08 Canon Inc Device for controlling electrifying potential of electrophotographic device
JPS60131576A (en) * 1983-12-20 1985-07-13 Konishiroku Photo Ind Co Ltd Image adjusting method
JPS6223075A (en) * 1985-07-24 1987-01-31 Hitachi Ltd Recorder
JPS62180381A (en) * 1986-02-04 1987-08-07 Minolta Camera Co Ltd Image recording device
JPS6343169A (en) * 1986-08-11 1988-02-24 Ricoh Co Ltd Image density control device
JPS63173068A (en) * 1987-01-13 1988-07-16 Fuji Xerox Co Ltd Adjusting method for copy density
JPH0627779A (en) * 1992-03-19 1994-02-04 Matsushita Electric Ind Co Ltd Image forming device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057868A (en) * 1983-09-09 1985-04-03 Canon Inc Image density controlling method
JPS6080871A (en) * 1983-10-08 1985-05-08 Canon Inc Device for controlling electrifying potential of electrophotographic device
JPS60131576A (en) * 1983-12-20 1985-07-13 Konishiroku Photo Ind Co Ltd Image adjusting method
JPS6223075A (en) * 1985-07-24 1987-01-31 Hitachi Ltd Recorder
JPS62180381A (en) * 1986-02-04 1987-08-07 Minolta Camera Co Ltd Image recording device
JPS6343169A (en) * 1986-08-11 1988-02-24 Ricoh Co Ltd Image density control device
JPS63173068A (en) * 1987-01-13 1988-07-16 Fuji Xerox Co Ltd Adjusting method for copy density
JPH0627779A (en) * 1992-03-19 1994-02-04 Matsushita Electric Ind Co Ltd Image forming device

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