JPS5768878A - Image formation device - Google Patents

Image formation device

Info

Publication number
JPS5768878A
JPS5768878A JP14527380A JP14527380A JPS5768878A JP S5768878 A JPS5768878 A JP S5768878A JP 14527380 A JP14527380 A JP 14527380A JP 14527380 A JP14527380 A JP 14527380A JP S5768878 A JPS5768878 A JP S5768878A
Authority
JP
Japan
Prior art keywords
course
detecting
copying
lamp
image formation
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
JP14527380A
Other languages
Japanese (ja)
Other versions
JPS645710B2 (en
Inventor
Masahito Ishida
Masahiro Tomosada
Tsuneki Inuzuka
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Priority to JP14527380A priority Critical patent/JPS5768878A/en
Publication of JPS5768878A publication Critical patent/JPS5768878A/en
Publication of JPS645710B2 publication Critical patent/JPS645710B2/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
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/20—Humidity or temperature control also ozone evacuation; Internal apparatus environment control

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Atmospheric Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Environmental Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To minimize heat generation in the inside of a copying machine, by constituting a device so that a detecting operation by a detecting means is not operated, in the course of a process operation by an image formation means, and the detecting operation by the detecting means is operated in the course of stand-by in case of non-operation of the process. CONSTITUTION:Since a COPY signal is ''0'' in the course of stand-by, an inverter Q34 outputs ''1''. Therefore, an AND gate Q33 generates an output in accordance with an output of an oscillator OSC, a transistor Q32 repeats its turn-on and turn- off, and drives a lamp LA intermittently. On the other hand, in the course of copying, lighting of the lamp is stopped by ''1'' of the signal COPY. In this way, since a toner detecting function is stopped repeatedly when copying is being executed, heat generation is minimized although a tungsten lamp LA is placed in the proximity of a developing device. Also, it is possible to prevent a detecting malfunction due to a pulse noise from a clutch, a solenoid, etc., which is apt to occur in the course of the copying operation.
JP14527380A 1980-10-17 1980-10-17 Image formation device Granted JPS5768878A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14527380A JPS5768878A (en) 1980-10-17 1980-10-17 Image formation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14527380A JPS5768878A (en) 1980-10-17 1980-10-17 Image formation device

Publications (2)

Publication Number Publication Date
JPS5768878A true JPS5768878A (en) 1982-04-27
JPS645710B2 JPS645710B2 (en) 1989-01-31

Family

ID=15381316

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14527380A Granted JPS5768878A (en) 1980-10-17 1980-10-17 Image formation device

Country Status (1)

Country Link
JP (1) JPS5768878A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5835564A (en) * 1981-08-28 1983-03-02 Fujitsu Ltd Detection for residual quantity of toner
JP4876184B1 (en) * 2010-10-18 2012-02-15 シャープ株式会社 refrigerator
CN106927282B (en) * 2015-10-14 2019-07-02 夏普株式会社 Sheet material conveyor and the image forming apparatus for having it

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53108440A (en) * 1977-03-04 1978-09-21 Ricoh Co Ltd Toner remainder detector
JPS53129657A (en) * 1977-04-19 1978-11-11 Ricoh Co Ltd Detecting method of quanity of one component type magnetic developer
JPS53136844A (en) * 1977-05-04 1978-11-29 Ricoh Co Ltd Toner residual quantity detector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53108440A (en) * 1977-03-04 1978-09-21 Ricoh Co Ltd Toner remainder detector
JPS53129657A (en) * 1977-04-19 1978-11-11 Ricoh Co Ltd Detecting method of quanity of one component type magnetic developer
JPS53136844A (en) * 1977-05-04 1978-11-29 Ricoh Co Ltd Toner residual quantity detector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5835564A (en) * 1981-08-28 1983-03-02 Fujitsu Ltd Detection for residual quantity of toner
JPH0226229B2 (en) * 1981-08-28 1990-06-08 Fujitsu Ltd
JP4876184B1 (en) * 2010-10-18 2012-02-15 シャープ株式会社 refrigerator
CN106927282B (en) * 2015-10-14 2019-07-02 夏普株式会社 Sheet material conveyor and the image forming apparatus for having it

Also Published As

Publication number Publication date
JPS645710B2 (en) 1989-01-31

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