JPS5528064A - Heating device for heat fixing apparatus - Google Patents

Heating device for heat fixing apparatus

Info

Publication number
JPS5528064A
JPS5528064A JP10146278A JP10146278A JPS5528064A JP S5528064 A JPS5528064 A JP S5528064A JP 10146278 A JP10146278 A JP 10146278A JP 10146278 A JP10146278 A JP 10146278A JP S5528064 A JPS5528064 A JP S5528064A
Authority
JP
Japan
Prior art keywords
heating elements
resistance
temperature
terminal
detected
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
JP10146278A
Other languages
Japanese (ja)
Inventor
Kunitoshi Nishimura
Isao Fujimoto
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP10146278A priority Critical patent/JPS5528064A/en
Publication of JPS5528064A publication Critical patent/JPS5528064A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To curtail the preparatory time, facilitate accurate temperature control, and increase thermal efficiency in a small size, by using the heat plate itself as the heating element and minimizing the heat capacity.
CONSTITUTION: A heating element 19 is a thin rectangular piece made of metal material having a high specific resistance. A plurality of such heating elements 19 are laid on a substrate 18 made of heat resistant material having a low thermal conductivity along the moving direction of a paper 7, and are connected to electrodes 20, 21 at the ends. A reference voltage corresponding to the desired temperature is applied to a terminal 24, and is applied to the heating elements 19 after amplifying the power by an amplifier 23. An additional resistor 25 having a lower resistance than the heating elements 19 is connected in series thereto. By the voltage proportional to the current generated in the terminal 26 and the voltage generated in the terminal 7 to act on the heating elements 19, the resistance of the heating elements 19 is detected in a resistance detecting circuit 22. The resistance of the heating elements 19 varies with the temperature. Therefore, once the resistance is detected, the temperature can be known. Hence, by negatively feeding back the voltage corresponding to the resistance to the reference voltage (temperature) applied to the terminal 24, the heating elements 19 may be held at a constant temperature.
COPYRIGHT: (C)1980,JPO&Japio
JP10146278A 1978-08-22 1978-08-22 Heating device for heat fixing apparatus Pending JPS5528064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10146278A JPS5528064A (en) 1978-08-22 1978-08-22 Heating device for heat fixing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10146278A JPS5528064A (en) 1978-08-22 1978-08-22 Heating device for heat fixing apparatus

Publications (1)

Publication Number Publication Date
JPS5528064A true JPS5528064A (en) 1980-02-28

Family

ID=14301364

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10146278A Pending JPS5528064A (en) 1978-08-22 1978-08-22 Heating device for heat fixing apparatus

Country Status (1)

Country Link
JP (1) JPS5528064A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5391861A (en) * 1991-07-25 1995-02-21 Rohm Co., Ltd. Heater for sheet material

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5093658A (en) * 1973-12-19 1975-07-25

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5093658A (en) * 1973-12-19 1975-07-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5391861A (en) * 1991-07-25 1995-02-21 Rohm Co., Ltd. Heater for sheet material

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