CN1011630B - Temperature sensor for photographic fixing hot roller of duplicator - Google Patents
Temperature sensor for photographic fixing hot roller of duplicatorInfo
- Publication number
- CN1011630B CN1011630B CN 86108894 CN86108894A CN1011630B CN 1011630 B CN1011630 B CN 1011630B CN 86108894 CN86108894 CN 86108894 CN 86108894 A CN86108894 A CN 86108894A CN 1011630 B CN1011630 B CN 1011630B
- Authority
- CN
- China
- Prior art keywords
- temperature sensor
- photographic fixing
- duplicating machine
- heat roller
- fixing heat
- 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.)
- Expired
Links
- 238000000605 extraction Methods 0.000 claims description 4
- 229920001342 Bakelite® Polymers 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 239000004637 bakelite Substances 0.000 claims description 2
- 229920006351 engineering plastic Polymers 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 239000007779 soft material Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000005192 partition Methods 0.000 abstract 1
- 238000005098 hot rolling Methods 0.000 description 19
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
Abstract
The invention provides a temperature sensor of a copying machine, which adopts a single-pivot thermal bimetallic strip as a temperature sensitive element, is provided with a partition wall at the periphery and is not contacted with a fixing hot roller, and avoids the damage of mutual friction of a contact type thermistor temperature sensor and the hot roller. The present invention can simplify the control circuit of the fixing temperature heater greatly, has the advantages of long service life, good copying quality, low cost, convenient use, etc., and can be widely used in various copying machines.
Description
The present invention is a kind of duplicating machine photographic fixing heat roller temperature sensor.
Duplicating machine photographic fixing heat roller temperature sensor adopts the contact thermistor (temperature) sensor at present, has two kinds substantially; A kind of is " soft feeler ", partly buries thermistor in high temperature resistant sponge, wraps up wear-resisting polyamides more thereon
Strip material is close to the hot-rolling surface; Another kind is " elastic contact sensor ", relies on spring to make heat-transfer metal and hot-rolling Elastic Contact, transmits temperature and gives thermistor; Above touch sensor is owing to contact with hot-rolling, need draw together sheet cleans hot-rolling, produce wearing and tearing, hot-rolling and sensor are damaged easily, influence hot-rolling and sensor serviceable life and duplicated quality, and temperature detection control circuit and hot-rolling heating control circuit complexity, thermistor and hot-rolling cost are higher.
The object of the invention is to provide a kind of and does not contact with hot-rolling, and control circuit is simple, and is highly sensitive, and the life-span is long, and cost is low, printer temperature sensor easy to use.
Printer temperature sensor provided by the invention, adopt thrermostatic bimetal-plate as temperature-sensing element (device), when utilizing thrermostatic bimetal-plate to be heated, owing to the thermal expansion coefficient difference of two layers of different metal of strong bonded produces flexural property, the thermistor that has replaced touch sensor, simplified duplicating machine temperature-control circuit and hot-rolling control circuit for heater greatly, thereby cost is low.The single fulcrum thrermostatic bimetal-plate that is adopted, one end is fixed on the insulating support, a moving contact is arranged on the other end, a fixed contact is arranged on insulating support, when single fulcrum thrermostatic bimetal-plate heated bending, moving contact on the thrermostatic bimetal-plate and the fixed contact on the insulating support are connected, by the extension line of point of fixity on the insulating support and fixed contact, signal is passed to the hot-rolling control circuit for heater, with the control temperature.On insulating support, form isolated plot around the thrermostatic bimetal-plate, rotate the influence of the gas-bearing formation convection current that causes and pumping airflow sensor to prevent hot-rolling.Temperature sensor provided by the invention does not contact with hot-rolling, thereby has prolonged the serviceable life of hot-rolling and sensor greatly, has guaranteed the duplicating quality.
Description of drawings:
Fig. 1 is a kind of structural representation of the present invention, is used for representing embodiments of the invention.
Fig. 2 is existing duplicating machine fixing heater temperature-control circuit block diagram.Among the figure: (8) are thermistor, and (9) are temperature detection control circuit, and (10) are the hot-rolling control circuit for heater, and (11) are the hot-rolling well heater.
Fig. 3 is the duplicating machine fixing heater temperature-control circuit block diagram of the practical example 1 of the present invention.
Fig. 4 is the duplicating machine fixing heater temperature-control circuit block diagram of the practical example 2 of the present invention.
Fig. 5 is the duplicating machine fixing heater temperature-control circuit block diagram of the practical example 3 of the present invention.
Embodiment:
With reference to Fig. 1, adopt an end of vertical bar shaped thrermostatic bimetal-plate (1) to be fixed on the support (3) by fulcrum (2), the other end has a moving contact (4), support (3) can adopt insulating material such as bakelite, engineering plastics, and the fixed contact (5) on moving contact on the bimetallic strip (4) and the support can adopt silver contact, to avoid its oxidation, prolong its serviceable life, fixed contact (5) scalable is with respect to the distance of moving contact (4), so that regulate and the control temperature.Support (3) go up bimetallic strip (1) around or two sides adopt high temperature resistant soft material (as high temperature resistant foam or sponge) to form dividing wall (6), form isolated plot.With bimetallic strip (1) painted black, can make sensor sensitiveer to radiation heat.Electrode (7) is drawn from fulcrum (2) and fixed contact (5), temperature sensor provided by the present invention, do not damage hot-rolling, have long service life, simple in structure, advantage such as cost is low, and is easy to use can be widely used on the various duplicating machine.Several practical examples below will be provided.
Practical example 1,
With reference to Fig. 3.(13) two extraction electrodes of temperature sensor of the present invention 150-200K Ω resistance (14) in parallel, an extraction electrode series connection 1-1.5K Ω resistance (15) wherein, the temperature sensor of forming the simulation thermistor, with reference to Fig. 1, electrode (7) can adopt hard lead to draw with duplicating machine and fix, with the convenient optimum distance of regulating sensor and hot-rolling, just airflow influence minimum.Temperature sensor provided by the present invention can directly be replaced the thermistor temperature sensor that existing duplicating machine adopts, and need not do any change and adjustment to duplicating machine fixing heater temperature control circuitry, and easy for installation.
Practical example 2:
With reference to Fig. 4, adopt printer temperature sensor of the present invention (13), replace the thermistor (8) and the temperature detection control circuit (9) of duplicating machine, still keep the control circuit of former duplicating machine well heater.
Practical example 3:
With reference to Fig. 5, adopt printer temperature sensor of the present invention (13), form the well heater temperature control circuit with existing product alternating current zero crossing closed type solid-state relay (12) and hot-rolling well heater (11), simplified the temperature-control circuit of duplicating machine fixing heater greatly.
Claims (7)
1, a kind of duplicating machine photographic fixing heat roller temperature sensor, it is characterized in that belonging to sheet (1) with single fulcrum thermo bimetal is temperature-sensing element (device), one end of thrermostatic bimetal-plate (1) is fixed on the insulating support (3), moving contact (4) is arranged on the thrermostatic bimetal-plate (1), fixed contact (5) is arranged on the insulating support (3), insulating support (3) go up bimetallic strip (1) around or two sides form dividing wall (6) and extraction electrode (7) composition.
2, duplicating machine photographic fixing heat roller temperature sensor according to claim 1 is characterized in that two extraction electrodes (7) are in parallel with 150～200K Ω resistance (14), and one of them electrode is connected with 1～1.5K Ω resistance (15).
3, duplicating machine photographic fixing heat roller temperature sensor according to claim 1 and 2 is characterized in that thrermostatic bimetal-plate (1) is the vertical bar shaped thrermostatic bimetal-plate, and painted black.
4, duplicating machine photographic fixing heat roller temperature sensor according to claim 1 and 2 is characterized in that insulating support (3) is bakelite or engineering plastics etc.
5, duplicating machine photographic fixing heat roller temperature sensor according to claim 1 and 2 is characterized in that described moving contact (4) and fixed contact (5) are silver contact.
6, duplicating machine photographic fixing heat roller temperature sensor according to claim 1 and 2 is characterized in that wherein said fixed contact (5) is the fixed contact of a scalable with respect to moving contact (4) distance.
7, duplicating machine photographic fixing heat roller temperature sensor according to claim 1 and 2 is characterized in that described dividing wall (6) adopts high temperature resistant soft material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86108894 CN1011630B (en) | 1986-12-27 | 1986-12-27 | Temperature sensor for photographic fixing hot roller of duplicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86108894 CN1011630B (en) | 1986-12-27 | 1986-12-27 | Temperature sensor for photographic fixing hot roller of duplicator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86108894A CN86108894A (en) | 1988-07-20 |
| CN1011630B true CN1011630B (en) | 1991-02-13 |
Family
ID=4804093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86108894 Expired CN1011630B (en) | 1986-12-27 | 1986-12-27 | Temperature sensor for photographic fixing hot roller of duplicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1011630B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100461029C (en) * | 2004-10-20 | 2009-02-11 | 佳能株式会社 | Image heating apparatus |
-
1986
- 1986-12-27 CN CN 86108894 patent/CN1011630B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100461029C (en) * | 2004-10-20 | 2009-02-11 | 佳能株式会社 | Image heating apparatus |
| CN101382764B (en) * | 2004-10-20 | 2011-02-09 | 佳能株式会社 | Image heating apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN86108894A (en) | 1988-07-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |