JPS5595960A - Abnormality indicator of heater in copying machine - Google Patents

Abnormality indicator of heater in copying machine

Info

Publication number
JPS5595960A
JPS5595960A JP282179A JP282179A JPS5595960A JP S5595960 A JPS5595960 A JP S5595960A JP 282179 A JP282179 A JP 282179A JP 282179 A JP282179 A JP 282179A JP S5595960 A JPS5595960 A JP S5595960A
Authority
JP
Japan
Prior art keywords
heater
triac
photocoupler
troubles
microcomputer
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
JP282179A
Other languages
Japanese (ja)
Other versions
JPS5855505B2 (en
Inventor
Koji Maruyama
Akiji Chiyou
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.)
Omron Corp
Canon Finetech Nisca Inc
Original Assignee
Copyer Co Ltd
Omron Tateisi Electronics Co
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 Copyer Co Ltd, Omron Tateisi Electronics Co filed Critical Copyer Co Ltd
Priority to JP54002821A priority Critical patent/JPS5855505B2/en
Publication of JPS5595960A publication Critical patent/JPS5595960A/en
Publication of JPS5855505B2 publication Critical patent/JPS5855505B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Fixing For Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE: To separately indicate troubles of a heater for heat fixation processing, a semiconductor switch, etc., by watching the state of semiconductor switching element, etc. for controlling power supply to the heater with a microcomputer through a photocoupler, etc.
CONSTITUTION: Triac 15 for forming a semiconductor switching element is triggered in accordance with the detection temperature of thermistor 17 through temperature controllers 18, 16, and AC power is supplied to heater 13 to heat fix a copied image. When triac 15 is conducting, current does not flow to a photocoupler connected in parallel to this, and only when triac 15 is not conducting, transistors PTr1, PTr2 forming the photocoupler conduct. These states are watched with microcomputer 18. On the other hand, ON and OFF signals of triac 15 are provided from controller 16 to computer 18, troubles of heater 13 of the semiconductor switch for controlling the heater are discriminated, thus separate trouble indication being made.
COPYRIGHT: (C)1980,JPO&Japio
JP54002821A 1979-01-13 1979-01-13 Abnormality display device for heating part in copying machine Expired JPS5855505B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54002821A JPS5855505B2 (en) 1979-01-13 1979-01-13 Abnormality display device for heating part in copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54002821A JPS5855505B2 (en) 1979-01-13 1979-01-13 Abnormality display device for heating part in copying machine

Publications (2)

Publication Number Publication Date
JPS5595960A true JPS5595960A (en) 1980-07-21
JPS5855505B2 JPS5855505B2 (en) 1983-12-09

Family

ID=11540069

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54002821A Expired JPS5855505B2 (en) 1979-01-13 1979-01-13 Abnormality display device for heating part in copying machine

Country Status (1)

Country Link
JP (1) JPS5855505B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1916573A1 (en) 2006-10-25 2008-04-30 Samsung Electronics Co., Ltd. Image forming apparatus and control method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0364505U (en) * 1989-10-31 1991-06-24

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1916573A1 (en) 2006-10-25 2008-04-30 Samsung Electronics Co., Ltd. Image forming apparatus and control method thereof

Also Published As

Publication number Publication date
JPS5855505B2 (en) 1983-12-09

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