JPH047547U - - Google Patents
Info
- Publication number
- JPH047547U JPH047547U JP4675890U JP4675890U JPH047547U JP H047547 U JPH047547 U JP H047547U JP 4675890 U JP4675890 U JP 4675890U JP 4675890 U JP4675890 U JP 4675890U JP H047547 U JPH047547 U JP H047547U
- Authority
- JP
- Japan
- Prior art keywords
- belt
- detection sensor
- image
- rolling
- fluctuation
- 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 8
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Color Electrophotography (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Description
第１図は本考案の実施例を示す斜視図、第２図
はブロツク図、第３図は補正の特性を示す説明図
、第４図は縦断側面図、第５図は従来例を示す斜
視図、第６図は一部を断面とした正面図、第７図
は平面図である。
８……画像形成装置、９，１０……ガイドロー
ラ、１１……画像移送ベルト、１２……印刷ステ
ーシヨン、２５……ローラ回動手段、３２……指
標、３３……転動検知センサ、３４……変動検出
センサ、３９……ベルト位置補正手段。
Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2 is a block diagram, Fig. 3 is an explanatory diagram showing correction characteristics, Fig. 4 is a vertical side view, and Fig. 5 is a perspective view showing a conventional example. FIG. 6 is a partially sectional front view, and FIG. 7 is a plan view. 8... Image forming device, 9, 10... Guide roller, 11... Image transfer belt, 12... Printing station, 25... Roller rotation means, 32... Index, 33... Rolling detection sensor, 34 . . . Fluctuation detection sensor, 39 . . . Belt position correction means.
Claims (1)
無端帯状の画像移送ベルトに印刷ステーシヨンを
対向配置した画像形成装置において、少なくとも
一方の前記ガイドローラを前記画像移送ベルトの
張架方向に回動自在に支持して位置決め保持する
ローラ回動手段を設け、前記画像移送ベルトの一
縁部に形成された指標を検知して前記画像移送ベ
ルトの転動位置を特定する転動検知センサを設け
、前記画像移送ベルトの前記ガイドローラの軸心
方向での変動量を検出する変動検出センサを設け
、前記転動検知センサの検知タイミングに従つて
読取つた前記変動検出センサの検出値に基づいて
前記ローラ回動手段を駆動するベルト位置補正手
段を設けたことを特徴とする画像形成装置。 In an image forming apparatus in which a printing station is disposed facing an endless image transfer belt stretched between at least two guide rollers, at least one of the guide rollers is rotatable in a direction in which the image transfer belt is stretched. roller rotating means for supporting and positioning the belt; a rolling detection sensor for detecting an index formed on one edge of the image transport belt to determine the rolling position of the image transport belt; A fluctuation detection sensor is provided to detect the amount of fluctuation in the axial direction of the guide roller of the transfer belt, and the rotation of the roller is determined based on the detection value of the fluctuation detection sensor read in accordance with the detection timing of the rolling detection sensor. An image forming apparatus comprising: a belt position correcting means for driving the means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4675890U JPH047547U (en) | 1990-05-01 | 1990-05-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4675890U JPH047547U (en) | 1990-05-01 | 1990-05-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH047547U true JPH047547U (en) | 1992-01-23 |
Family
ID=31562111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4675890U Pending JPH047547U (en) | 1990-05-01 | 1990-05-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH047547U (en) |
-
1990
- 1990-05-01 JP JP4675890U patent/JPH047547U/ja active Pending