JPS5689771A - Control system for transfer type electronic copier - Google Patents

Control system for transfer type electronic copier

Info

Publication number
JPS5689771A
JPS5689771A JP16790379A JP16790379A JPS5689771A JP S5689771 A JPS5689771 A JP S5689771A JP 16790379 A JP16790379 A JP 16790379A JP 16790379 A JP16790379 A JP 16790379A JP S5689771 A JPS5689771 A JP S5689771A
Authority
JP
Japan
Prior art keywords
output
amp1
temperature
forcedly
toner
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.)
Pending
Application number
JP16790379A
Other languages
Japanese (ja)
Inventor
Masaaki Ogura
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP16790379A priority Critical patent/JPS5689771A/en
Publication of JPS5689771A publication Critical patent/JPS5689771A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fixing For Electrophotography (AREA)

Abstract

PURPOSE: To clean a roller surface by a blade without resistance, under the state where the toner is softened, by monitoring and detecting always the roller surface temperature and by inhibiting driving of a thermal fixing roller forcedly when this temperature is a prescribed value or less.
CONSTITUTION: Amplifier AMP1 to detect the upper limit temperature of the thermal fixing equipment is connected between output sides (a) and (b) of the bridge-form resistance circuit, where thermoelectric element 6 is connected to one side, and amplifier AMP2 to detect the lower limit temperature is connected between (a) and (c). The output of AMP1 is input to driving circuit 8 of heater 3; and while the output is high-level, the power supply circuit of heater 3 is turned on; and when the output is low-level, the power supply circuit is turned off forcedly. The output of AMP1 is sent to input terminal S of FF1 through NOT gate NOT1, and the output of AMP2 is sent to reset input R of FF1, and main motor 7 is driven and controlled according to the output of FF1. As a result, the toner is prevented completely from exfoliating together with the Teflon layer.
COPYRIGHT: (C)1981,JPO&Japio
JP16790379A 1979-12-24 1979-12-24 Control system for transfer type electronic copier Pending JPS5689771A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16790379A JPS5689771A (en) 1979-12-24 1979-12-24 Control system for transfer type electronic copier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16790379A JPS5689771A (en) 1979-12-24 1979-12-24 Control system for transfer type electronic copier

Publications (1)

Publication Number Publication Date
JPS5689771A true JPS5689771A (en) 1981-07-21

Family

ID=15858182

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16790379A Pending JPS5689771A (en) 1979-12-24 1979-12-24 Control system for transfer type electronic copier

Country Status (1)

Country Link
JP (1) JPS5689771A (en)

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