JPH0411568U - - Google Patents
Info
- Publication number
- JPH0411568U JPH0411568U JP5197490U JP5197490U JPH0411568U JP H0411568 U JPH0411568 U JP H0411568U JP 5197490 U JP5197490 U JP 5197490U JP 5197490 U JP5197490 U JP 5197490U JP H0411568 U JPH0411568 U JP H0411568U
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- fixing roller
- roller
- contact
- fixing
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 13
- 238000000926 separation method Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
Description
第１図は本考案の一実施例に係る定着装置の概
略的な構成図、第２図ａ，ｂは第１の温度検知手
段の離接機構を示す構成図、第３図は他の実施例
の構成図、第４図及び第５図は夫々従来例の縦断
面図である。
１……定着装置、３……ヒータ（熱源）、５…
…定着ローラ、２３……第１のサーミスタ（第１
の温度検知手段）、２７……離接機構、２９……
オイル塗布ローラ（離型剤塗布ローラ）、３１…
…第２のサーミスタ（第２の温度検知手段）、４
３……補助ローラ、Ｏ……オイル（離型剤）。
FIG. 1 is a schematic configuration diagram of a fixing device according to an embodiment of the present invention, FIGS. The configuration diagram of the example, FIG. 4, and FIG. 5 are longitudinal sectional views of the conventional example, respectively. 1... Fixing device, 3... Heater (heat source), 5...
...Fixing roller, 23...First thermistor (first
temperature detection means), 27... separation mechanism, 29...
Oil application roller (release agent application roller), 31...
...Second thermistor (second temperature detection means), 4
3... Auxiliary roller, O... Oil (mold release agent).
Claims (1)
ローラの外周面に圧接する加圧ローラと、該定着
ローラ外周面に接して従動回転し転写紙上の未定
着現像剤が定着ローラ上に付着することを防止す
るための離型剤を該定着ローラに塗布する離型剤
塗布ローラとを備えた定着装置であつて、 前記定着ローラに対し離接機構を介して離接可
能に設けられた該定着ローラの温度を検出する第
１の温度検知手段と、前記離型剤塗布ローラに摺
接して該離型剤塗布ローラの温度を検知する第２
の温度検知手段と、該第１或は第２の温度検知手
段が検知した温度に基づいて前記定着ローラの表
面温度を設定温度にするよう熱源の温度を制御す
るとともに前記離接機構の駆動を制御する制御手
段とを備え、該制御手段は前記定着ローラの回転
時には第１の温度検知手段を定着ローラから離脱
させるべく離接機構を駆動し且つ第２の温度検知
手段の温度検知に基づいて熱源の温度制御を行な
う一方、定着ローラの非回転時には第１の温度検
知手段を定着ローラに当接させるべく該離接機構
を駆動し且つ第１の温度検知手段の温度検知に基
づいて熱源の温度制御を行なうことを特徴とする
定着装置。 (2) 内部に熱源を有した定着ローラと、該定着
ローラに圧接する加圧ローラと、この定着ローラ
に当接して従動回転する補助ローラとを備えた定
着装置であつて、 前記定着ローラに対し離接機構を介して離接可
能に設けられ該定着ローラの温度を検出する第１
の温度検知手段と、前記補助ローラに摺接して該
補助ローラの温度を検知する第２の温度検知手段
と、該第１或は第２の温度検知手段が検知した温
度に基づいて前記定着ローラの表面温度が予め設
定された温度となるよう熱源の温度を制御すると
ともに前記離接機構の駆動を制御する制御手段と
を備え、該制御手段は、前記定着ローラの回転時
に第１の温度検知手段が定着ローラから離脱する
よう離接機構を駆動し且つ第２の温度検知手段の
温度検知に基づいて熱源の温度制御を行なう一方
、定着ローラの非回転時に第１の温度検知手段が
定着ローラに当接するよう離接機構を駆動し且つ
第１の温度検知手段の温度検知に基づいて熱源の
温度制御を行なうよう構成したことを特徴とする
定着装置。[Claims for Utility Model Registration] (1) A fixing roller equipped with an internal heat source, a pressure roller that comes into pressure contact with the outer circumferential surface of the fixing roller, and a pressure roller that is driven to rotate in contact with the outer circumferential surface of the fixing roller, and an unfixed image on the transfer paper. A fixing device comprising: a release agent application roller for applying a release agent to the fixing roller to prevent the developer from adhering to the fixing roller; a first temperature detection means for detecting the temperature of the fixing roller, which is provided so as to be able to come into contact with and be separated from the fixing roller; and a second temperature detection means that comes into sliding contact with the release agent application roller and detects the temperature of the release agent application roller.
control the temperature of the heat source so that the surface temperature of the fixing roller reaches a set temperature based on the temperature detected by the temperature detection means and the first or second temperature detection means, and also controls the drive of the separation mechanism. and a control means for controlling, when the fixing roller rotates, the control means drives a separation mechanism to separate the first temperature sensing means from the fixing roller, and based on temperature detection by the second temperature sensing means. While controlling the temperature of the heat source, when the fixing roller is not rotating, the contact/separation mechanism is driven to bring the first temperature sensing means into contact with the fixing roller, and the temperature of the heat source is controlled based on the temperature detected by the first temperature sensing means. A fixing device characterized by temperature control. (2) A fixing device comprising a fixing roller having an internal heat source, a pressure roller that comes into pressure contact with the fixing roller, and an auxiliary roller that comes into contact with the fixing roller and rotates as a result of the fixing roller, the fixing roller having On the other hand, the first roller is separably provided via a contact/separation mechanism and detects the temperature of the fixing roller.
a second temperature detection means that slides on the auxiliary roller to detect the temperature of the auxiliary roller; and a second temperature detection means that detects the temperature of the auxiliary roller based on the temperature detected by the first or second temperature detection means. control means for controlling the temperature of the heat source so that the surface temperature of the fixing roller becomes a preset temperature, and controlling the drive of the separation mechanism, the control means detecting the first temperature when the fixing roller rotates. The means drives the separation mechanism so as to separate from the fixing roller, and controls the temperature of the heat source based on temperature detection by the second temperature detecting means, while the first temperature detecting means disengages from the fixing roller when the fixing roller is not rotating. 1. A fixing device characterized in that the fixing device is configured to drive a contact/separation mechanism so as to come into contact with the fixing device, and to control the temperature of the heat source based on temperature detection by the first temperature detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5197490U JPH0411568U (en) | 1990-05-18 | 1990-05-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5197490U JPH0411568U (en) | 1990-05-18 | 1990-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0411568U true JPH0411568U (en) | 1992-01-30 |
Family
ID=31571884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5197490U Pending JPH0411568U (en) | 1990-05-18 | 1990-05-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0411568U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49137588U (en) * | 1973-03-23 | 1974-11-27 |
-
1990
- 1990-05-18 JP JP5197490U patent/JPH0411568U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49137588U (en) * | 1973-03-23 | 1974-11-27 |
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