JPS55153976A - Image forming device - Google Patents

Image forming device

Info

Publication number
JPS55153976A
JPS55153976A JP6079079A JP6079079A JPS55153976A JP S55153976 A JPS55153976 A JP S55153976A JP 6079079 A JP6079079 A JP 6079079A JP 6079079 A JP6079079 A JP 6079079A JP S55153976 A JPS55153976 A JP S55153976A
Authority
JP
Japan
Prior art keywords
toner
tep
toners
output
display device
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
JP6079079A
Other languages
Japanese (ja)
Other versions
JPS6354179B2 (en
Inventor
Tsuneki Inuzuka
Yoshitaka Kawamo
Masahito Ishida
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 JP6079079A priority Critical patent/JPS55153976A/en
Publication of JPS55153976A publication Critical patent/JPS55153976A/en
Publication of JPS6354179B2 publication Critical patent/JPS6354179B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Paper Feeding For Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To avoid the complexing of the operating part by displaying the toner shortage in the developing device and the overflow of the toner recovery case by a common display device in a dry type electrophotographic copier or the like. CONSTITUTION:A residual toner amount detecting element 61 and overflow detecting element 62 detect the toner level in a case from the presence or not of the toners interposing between lamps and photo detectors and output the signals TEP, OVF respectively. When the toners in the developing device during copying become less, the signal TEP is output by way of an operational amplifier Q50. The signal thereof lights a toner-absence display device 48 by way of a gate G61. When the toners in the toner recovery case increase and become close to an overflow state, the signal OVF is output through an operational amplifier Q51 to light the toner-absence display device 47 through the gate G61 in the same manner as with the TEP. In this case, it may be possible to make the displaying differing from that of the TEP of lighting the device by letting the device flicker.
JP6079079A 1979-05-17 1979-05-17 Image forming device Granted JPS55153976A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6079079A JPS55153976A (en) 1979-05-17 1979-05-17 Image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6079079A JPS55153976A (en) 1979-05-17 1979-05-17 Image forming device

Publications (2)

Publication Number Publication Date
JPS55153976A true JPS55153976A (en) 1980-12-01
JPS6354179B2 JPS6354179B2 (en) 1988-10-27

Family

ID=13152441

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6079079A Granted JPS55153976A (en) 1979-05-17 1979-05-17 Image forming device

Country Status (1)

Country Link
JP (1) JPS55153976A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5888664U (en) * 1981-12-04 1983-06-16 富士通株式会社 Toner full display device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5040244U (en) * 1973-07-27 1975-04-24
JPS53131049A (en) * 1978-04-29 1978-11-15 Ricoh Co Ltd Copying apparatus for zerography
JPS53141630A (en) * 1977-05-17 1978-12-09 Ricoh Co Ltd Paper feeder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5040244U (en) * 1973-07-27 1975-04-24
JPS53141630A (en) * 1977-05-17 1978-12-09 Ricoh Co Ltd Paper feeder
JPS53131049A (en) * 1978-04-29 1978-11-15 Ricoh Co Ltd Copying apparatus for zerography

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5888664U (en) * 1981-12-04 1983-06-16 富士通株式会社 Toner full display device

Also Published As

Publication number Publication date
JPS6354179B2 (en) 1988-10-27

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