JPH0413708B2 - - Google Patents

Info

Publication number
JPH0413708B2
JPH0413708B2 JP55067091A JP6709180A JPH0413708B2 JP H0413708 B2 JPH0413708 B2 JP H0413708B2 JP 55067091 A JP55067091 A JP 55067091A JP 6709180 A JP6709180 A JP 6709180A JP H0413708 B2 JPH0413708 B2 JP H0413708B2
Authority
JP
Japan
Prior art keywords
circuit
output
detector
toner
reference target
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 - Lifetime
Application number
JP55067091A
Other languages
English (en)
Japanese (ja)
Other versions
JPS56164355A (en
Inventor
Masaaki Tanaka
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.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox 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 Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP6709180A priority Critical patent/JPS56164355A/ja
Publication of JPS56164355A publication Critical patent/JPS56164355A/ja
Publication of JPH0413708B2 publication Critical patent/JPH0413708B2/ja
Granted 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
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0848—Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability
    • G03G15/0849—Detection or control means for the developer concentration
    • G03G15/0855—Detection or control means for the developer concentration the concentration being measured by optical means
    • 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
    • G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
    • G03G15/5033—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor
    • G03G15/5041—Detecting a toner image, e.g. density, toner coverage, using a test patch

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing For Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
JP6709180A 1980-05-22 1980-05-22 Image density detector of electrophotographic copying machine Granted JPS56164355A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6709180A JPS56164355A (en) 1980-05-22 1980-05-22 Image density detector of electrophotographic copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6709180A JPS56164355A (en) 1980-05-22 1980-05-22 Image density detector of electrophotographic copying machine

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP4346768A Division JPH0731429B2 (ja) 1992-12-25 1992-12-25 電子写真複写機の制御装置

Publications (2)

Publication Number Publication Date
JPS56164355A JPS56164355A (en) 1981-12-17
JPH0413708B2 true JPH0413708B2 (en]) 1992-03-10

Family

ID=13334862

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6709180A Granted JPS56164355A (en) 1980-05-22 1980-05-22 Image density detector of electrophotographic copying machine

Country Status (1)

Country Link
JP (1) JPS56164355A (en])

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0616192B2 (ja) * 1984-11-16 1994-03-02 三田工業株式会社 複写機の異常状態判別方法
JPS6373769U (en]) * 1986-10-29 1988-05-17
JP2573851B2 (ja) * 1987-09-25 1997-01-22 コニカ株式会社 トナー濃度制御装置におけるセンサ汚れ補償装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6024470B2 (ja) * 1976-07-05 1985-06-13 キヤノン株式会社 画像形成装置
JPS5410743A (en) * 1977-06-27 1979-01-26 Canon Inc Image forming apparatus

Also Published As

Publication number Publication date
JPS56164355A (en) 1981-12-17

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