JPS56128964A - Copy-density control and paper jam detection device - Google Patents

Copy-density control and paper jam detection device

Info

Publication number
JPS56128964A
JPS56128964A JP17630180A JP17630180A JPS56128964A JP S56128964 A JPS56128964 A JP S56128964A JP 17630180 A JP17630180 A JP 17630180A JP 17630180 A JP17630180 A JP 17630180A JP S56128964 A JPS56128964 A JP S56128964A
Authority
JP
Japan
Prior art keywords
picture
photoreceptor
output voltage
transfer paper
density
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.)
Granted
Application number
JP17630180A
Other languages
Japanese (ja)
Other versions
JPH0113101B2 (en
Inventor
Fumio Iwai
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP17630180A priority Critical patent/JPS56128964A/en
Publication of JPS56128964A publication Critical patent/JPS56128964A/en
Publication of JPH0113101B2 publication Critical patent/JPH0113101B2/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)
  • Paper Feeding For Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Controlling Sheets Or Webs (AREA)

Abstract

PURPOSE:To control the density of a copied picture accurately by stopping a photosensitive paper and a transfer paper by comparing the output voltage level of a photodetector, which is generated from detecting a photoreceptor and a transfer paper in a defective state for separation, with a set level of the transfer paper in the good state for separation. CONSTITUTION:In exposure for every copy, exposure device 8 exposes even the shade of reference image 7 to the leading edge or tailing edge of photoreceptor 1 outside of the required transfer area to form a latent image, which is developed by developing device 3 to form toner control picture 22 and the image of an original. As photoreceptor 1 further rotates and toner control picture 22 moves to the detection part, the reflected light of infrared rays emitted from light emitting element 20 is detected by photodetector 21, whose output voltage level is compared by comparator 24 with an assigned density level; when the output voltage is higher or lower, the amount of toner supply into developer container 13 is controlled through the operation of oscillatory lever 15 of toner supply container 12 to obtain a picture of invariably constant density.
JP17630180A 1980-12-12 1980-12-12 Copy-density control and paper jam detection device Granted JPS56128964A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17630180A JPS56128964A (en) 1980-12-12 1980-12-12 Copy-density control and paper jam detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17630180A JPS56128964A (en) 1980-12-12 1980-12-12 Copy-density control and paper jam detection device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP12915077A Division JPS5461938A (en) 1977-10-27 1977-10-27 Copy concentration controller/paper clogging detector

Publications (2)

Publication Number Publication Date
JPS56128964A true JPS56128964A (en) 1981-10-08
JPH0113101B2 JPH0113101B2 (en) 1989-03-03

Family

ID=16011189

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17630180A Granted JPS56128964A (en) 1980-12-12 1980-12-12 Copy-density control and paper jam detection device

Country Status (1)

Country Link
JP (1) JPS56128964A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107116916A (en) * 2017-05-02 2017-09-01 安徽玉辉电子科技有限公司 A kind of anti-sticking paper system of printer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4874850A (en) * 1971-12-28 1973-10-09
JPS5233734A (en) * 1975-09-10 1977-03-15 Canon Inc Device for detecting and controlling density

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4874850A (en) * 1971-12-28 1973-10-09
JPS5233734A (en) * 1975-09-10 1977-03-15 Canon Inc Device for detecting and controlling density

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107116916A (en) * 2017-05-02 2017-09-01 安徽玉辉电子科技有限公司 A kind of anti-sticking paper system of printer

Also Published As

Publication number Publication date
JPH0113101B2 (en) 1989-03-03

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