JPH049960U - - Google Patents
Info
- Publication number
- JPH049960U JPH049960U JP5068590U JP5068590U JPH049960U JP H049960 U JPH049960 U JP H049960U JP 5068590 U JP5068590 U JP 5068590U JP 5068590 U JP5068590 U JP 5068590U JP H049960 U JPH049960 U JP H049960U
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- fixing roller
- detection means
- temperature detection
- endless belt
- 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
- 238000001514 detection method Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Fixing For Electrophotography (AREA)
Description
第１〜３図は本考案に係る定着装置の一実施例
を示す図であり、第１図はその定着装置を適用し
たレーザプリンタの概略構成図、第２図はその要
部拡大図、第３図はその第１サーミスタの検出温
度の温度変動を示すグラフ、第４図は従来の定着
装置の概略構成図である。
１３……定着ローラ、１４……ヒータ、１５…
…無端ベルト、１６……第１サーミスタ（第１温
度検出手段）、１７……第２サーミスタ（第２温
度検出手段）、１８……制御部（制御手段）、２
２……転写紙（転写材）。
1 to 3 are diagrams showing one embodiment of the fixing device according to the present invention, FIG. 1 is a schematic configuration diagram of a laser printer to which the fixing device is applied, FIG. 2 is an enlarged view of the main parts, and FIG. FIG. 3 is a graph showing temperature fluctuations in the temperature detected by the first thermistor, and FIG. 4 is a schematic diagram of a conventional fixing device. 13... Fixing roller, 14... Heater, 15...
... Endless belt, 16 ... First thermistor (first temperature detection means), 17 ... Second thermistor (second temperature detection means), 18 ... Control section (control means), 2
2...Transfer paper (transfer material).
Claims (1)
熱するヒータと、定着ローラに当接して定着ロー
ラの回転に対応して駆動される無端ベルトと、を
備え、転写画像を有する転写材が定着ローラおよ
び無端ベルトの間を通過するとき、転写画像が転
写材に定着される定着装置において、前記定着ロ
ーラに当接する無端ベルトの当接面の裏面に当接
して、無端ベルトの温度を検出する第１温度検出
手段と、定着ローラの所定位置の外周面に当接し
て定着ローラの温度を検出する第２温度検出手段
と、所定の設定温度を記憶し、第１温度検出手段
または第２温度検出手段の検出温度を所定の設定
温度と比較して、ヒータの通電および通電の遮断
を制御する制御手段と、を設け、該制御手段が、
第１温度検出手段の検出温度および第２温度検出
手段の検出温度の温度差に基づいて前記所定の設
定温度を補正することを特徴とする定着装置。 It includes a fixing roller that is rotationally driven, a heater that heats the fixing roller, and an endless belt that comes into contact with the fixing roller and is driven in response to the rotation of the fixing roller. In a fixing device that fixes a transferred image to a transfer material when passing between the endless belts, a first roller that comes into contact with the back side of the contact surface of the endless belt that contacts the fixing roller and detects the temperature of the endless belt. temperature detection means; second temperature detection means for detecting the temperature of the fixing roller by contacting the outer peripheral surface of the fixing roller at a predetermined position; and first temperature detection means or second temperature detection means for storing a predetermined set temperature. a control means for controlling energization and de-energization of the heater by comparing the detected temperature with a predetermined set temperature, the control means comprising:
A fixing device, wherein the predetermined set temperature is corrected based on a temperature difference between a temperature detected by the first temperature detection means and a temperature detected by the second temperature detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5068590U JP2510277Y2 (en) | 1990-05-15 | 1990-05-15 | Fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5068590U JP2510277Y2 (en) | 1990-05-15 | 1990-05-15 | Fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH049960U true JPH049960U (en) | 1992-01-28 |
| JP2510277Y2 JP2510277Y2 (en) | 1996-09-11 |
Family
ID=31569448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5068590U Expired - Lifetime JP2510277Y2 (en) | 1990-05-15 | 1990-05-15 | Fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2510277Y2 (en) |
-
1990
- 1990-05-15 JP JP5068590U patent/JP2510277Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2510277Y2 (en) | 1996-09-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |