JPS554046A - Fixing device in copying machine - Google Patents
Fixing device in copying machineInfo
- Publication number
- JPS554046A JPS554046A JP7656878A JP7656878A JPS554046A JP S554046 A JPS554046 A JP S554046A JP 7656878 A JP7656878 A JP 7656878A JP 7656878 A JP7656878 A JP 7656878A JP S554046 A JPS554046 A JP S554046A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- roller
- fluid coupling
- motor
- heating roller
- 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
Links
Landscapes
- Fixing For Electrophotography (AREA)
Abstract
PURPOSE: To enable a pressure roller to make pressure contact, release and pressure adjustment with respect to a heating roller through simple control by connecting support members which support the pressure roller detachably from a heating roller to a driving device by way of a fluid coupling.
CONSTITUTION: When a motor 1 runs, a heating roller 6 revolves and at the same time, a fluid coupling 3 revolves while generating the transmission torque proportional to the revolving speed of the motor 1 and therefore the pulleys 9, 10 connected to the shaft 11 also revolve in the same direction, thus winding up wires 16, 17. As a result, a pressure roller 5 is pulled up to make pressure contact to the heating roller 6, then the pressure roller revolves together with the heating roller 6. When the motor 1 further continues to rotate, the pressure of fixing roller pair 5, 6 gradually increases but when it reaches the pressure obtainable by the maximum transmission torque that can be generated by the fluid coupling 3, said pressure does not longer increase and maintains a fixed pressure contact state. When the motor 1 stops running, the transmission torque of the fluid coupling 3 gradually decreases and the pressure roller 5 is gradually lowered by the braking force of the fluid coupling 3 owing to its gravity.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7656878A JPS554046A (en) | 1978-06-26 | 1978-06-26 | Fixing device in copying machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7656878A JPS554046A (en) | 1978-06-26 | 1978-06-26 | Fixing device in copying machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS554046A true JPS554046A (en) | 1980-01-12 |
JPS6118749B2 JPS6118749B2 (en) | 1986-05-14 |
Family
ID=13608827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7656878A Granted JPS554046A (en) | 1978-06-26 | 1978-06-26 | Fixing device in copying machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS554046A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4972232A (en) * | 1989-09-05 | 1990-11-20 | Eastman Kodak Company | Fusing apparatus having automatic nip width adjustment mechanism |
JPH04172385A (en) * | 1990-11-05 | 1992-06-19 | Nec Niigata Ltd | Electrophotographic printing device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01153153U (en) * | 1988-04-11 | 1989-10-23 |
-
1978
- 1978-06-26 JP JP7656878A patent/JPS554046A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4972232A (en) * | 1989-09-05 | 1990-11-20 | Eastman Kodak Company | Fusing apparatus having automatic nip width adjustment mechanism |
JPH04172385A (en) * | 1990-11-05 | 1992-06-19 | Nec Niigata Ltd | Electrophotographic printing device |
Also Published As
Publication number | Publication date |
---|---|
JPS6118749B2 (en) | 1986-05-14 |
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