JPH0341737U - - Google Patents
Info
- Publication number
- JPH0341737U JPH0341737U JP10317789U JP10317789U JPH0341737U JP H0341737 U JPH0341737 U JP H0341737U JP 10317789 U JP10317789 U JP 10317789U JP 10317789 U JP10317789 U JP 10317789U JP H0341737 U JPH0341737 U JP H0341737U
- Authority
- JP
- Japan
- Prior art keywords
- media
- rotating body
- rotating
- determining
- rotary body
- 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 3
- 239000012526 feed medium Substances 0.000 claims 1
- 239000002609 medium Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Controlling Sheets Or Webs (AREA)
- Conveying Record Carriers (AREA)
Description
第１図は本考案の一実施例に係るメデイアの検
出装置が組込まれた画像形成装置を示す概略断面
図、第２図は第１図に設けられた画像形成部を拡
大して示す斜視図、第３図は回転体の回転ムラの
発生状態を示すグラフ、第４図は回転体の回転ム
ラと突入したメデイアの枚数との関係を示すグラ
フ、第５図は本考案の装置の制御回路を示すブロ
ツク図、第６図は回転体の回転速度とシグナルコ
ンデイシヨナーの電圧出力との関係を示す特性線
図、第７図は画像形成部に重送状態でメデイアが
突入した状態を示す正面図である。
１６…駆動ドラム（回転体）、１７，１８…搬
送ローラ（回転体）、２３…駆動モータ、２５…
エンコーダ（回転ムラ検出手段）、３０…ＣＰＵ
（判別手段）。
FIG. 1 is a schematic sectional view showing an image forming apparatus incorporating a media detection device according to an embodiment of the present invention, and FIG. 2 is an enlarged perspective view showing the image forming section provided in FIG. 1. , Fig. 3 is a graph showing the occurrence of uneven rotation of the rotating body, Fig. 4 is a graph showing the relationship between uneven rotation of the rotating body and the number of inserted media, and Fig. 5 is a control circuit of the device of the present invention. Fig. 6 is a characteristic diagram showing the relationship between the rotational speed of the rotating body and the voltage output of the signal conditioner, and Fig. 7 shows the state in which media enter the image forming section in a double-feed state. It is a front view. 16... Drive drum (rotating body), 17, 18... Conveyance roller (rotating body), 23... Drive motor, 25...
Encoder (rotation unevenness detection means), 30...CPU
(discrimination means).
Claims (1)
回転体との間で搬送する第２回転体と、 前記第１と第２の回転体の少なくとも一方の回
転速度の変動を検出する回転ムラ検出手段と、 複数枚の前記メデイアが積層状態で前記回転体
の位置まで給送されたときに、メデイアの重送枚
数を前記回転体の回転ムラの大小から判別する判
別手段とを有するメデイアの検出装置。[Claims for Utility Model Registration] A first rotating body, and a medium that is brought into pressure contact with the first rotating body.
a second rotating body conveyed between the first and second rotating bodies; a rotational unevenness detecting means for detecting a variation in the rotational speed of at least one of the first and second rotating bodies; and a plurality of media in a stacked state. 1. A media detection device comprising: a determining means for determining the number of multi-feed media from the magnitude of uneven rotation of the rotary body when the media are fed to a position of the rotary body.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10317789U JPH0341737U (en) | 1989-09-04 | 1989-09-04 | |
| US07/575,445 US5097273A (en) | 1989-09-04 | 1990-08-30 | Recording medium detecting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10317789U JPH0341737U (en) | 1989-09-04 | 1989-09-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0341737U true JPH0341737U (en) | 1991-04-22 |
Family
ID=31652032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10317789U Pending JPH0341737U (en) | 1989-09-04 | 1989-09-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0341737U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015129049A (en) * | 2013-12-02 | 2015-07-16 | 株式会社リコー | Paper feeding device and image formation device |
| JP2020033139A (en) * | 2018-08-29 | 2020-03-05 | キヤノン株式会社 | Sheet conveying device, document reading device, and image forming device |
-
1989
- 1989-09-04 JP JP10317789U patent/JPH0341737U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015129049A (en) * | 2013-12-02 | 2015-07-16 | 株式会社リコー | Paper feeding device and image formation device |
| JP2020033139A (en) * | 2018-08-29 | 2020-03-05 | キヤノン株式会社 | Sheet conveying device, document reading device, and image forming device |
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