JPH02139854U - - Google Patents
Info
- Publication number
- JPH02139854U JPH02139854U JP4891889U JP4891889U JPH02139854U JP H02139854 U JPH02139854 U JP H02139854U JP 4891889 U JP4891889 U JP 4891889U JP 4891889 U JP4891889 U JP 4891889U JP H02139854 U JPH02139854 U JP H02139854U
- Authority
- JP
- Japan
- Prior art keywords
- paper
- drive shaft
- rotating member
- detection device
- key portion
- 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 7
- 238000010586 diagram Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 1
Landscapes
- Handling Of Sheets (AREA)
- Paper Feeding For Electrophotography (AREA)
- Controlling Sheets Or Webs (AREA)
Description
第１図は本考案の紙折れ検知センサーの構成を
示す説明図、第２図は本考案の紙折れ検知センサ
ーをデジタル方式の電子複写機に適用する場合の
説明図であり、第３図は用紙に紙折れ部分が形成
された場合の不良コピーの状態を示す説明図であ
る。
図中の符号、１……感光体ドラム、１０……紙
折れ検知センサー、１１……駆動軸、１２……パ
ドル部材、１３……カギ部、１５……センサー駆
動モータ、１６……回転数検出回路、１７……制
御部。
FIG. 1 is an explanatory diagram showing the configuration of the paper fold detection sensor of the present invention, FIG. 2 is an explanatory diagram when the paper fold detection sensor of the present invention is applied to a digital electronic copying machine, and FIG. FIG. 7 is an explanatory diagram showing a state of a defective copy when a folded portion is formed on the paper. Symbols in the diagram: 1... Photosensitive drum, 10... Paper fold detection sensor, 11... Drive shaft, 12... Paddle member, 13... Key part, 15... Sensor drive motor, 16... Rotation speed Detection circuit, 17...control unit.
Claims (1)
置し、該パドル部材の先端部に軸の回転方向に向
けて突出したカギ部を設けてなる回転部材と、 前記回転部材を用紙の移動速度よりも高速で、
用紙の進行方向に向けて回転させるための駆動手
段、および、前記駆動軸の回転を検知するための
回転数検出回路とから構成され、 前記回転部材を用紙搬送路を通る用紙の端部に
接するようにして配置し、紙折れを生じた用紙に
カギ部が係止された際に、駆動軸の回転数の低下
を検知させるように構成したことを特徴とする紙
折れ検出装置。[Claims for Utility Model Registration] A rotating member comprising a plurality of paddle members arranged radially with respect to a drive shaft, and a key portion protruding in the rotational direction of the shaft at the tip of the paddle member; The rotating member is moved faster than the paper movement speed,
It is composed of a driving means for rotating the paper in the traveling direction and a rotation speed detection circuit for detecting the rotation of the drive shaft, and the rotating member is brought into contact with an end of the paper passing through the paper conveyance path. A paper fold detection device, characterized in that the paper fold detection device is arranged in this way and is configured to detect a decrease in the number of rotations of a drive shaft when a key portion is locked to a folded paper sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4891889U JPH02139854U (en) | 1989-04-27 | 1989-04-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4891889U JPH02139854U (en) | 1989-04-27 | 1989-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02139854U true JPH02139854U (en) | 1990-11-22 |
Family
ID=31566155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4891889U Pending JPH02139854U (en) | 1989-04-27 | 1989-04-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02139854U (en) |
-
1989
- 1989-04-27 JP JP4891889U patent/JPH02139854U/ja active Pending
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