JPS6426741U - - Google Patents
Info
- Publication number
- JPS6426741U JPS6426741U JP12126287U JP12126287U JPS6426741U JP S6426741 U JPS6426741 U JP S6426741U JP 12126287 U JP12126287 U JP 12126287U JP 12126287 U JP12126287 U JP 12126287U JP S6426741 U JPS6426741 U JP S6426741U
- Authority
- JP
- Japan
- Prior art keywords
- paper
- detects
- jam detection
- paper jam
- fixing device
- 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 9
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Handling Of Sheets (AREA)
- Paper Feeding For Electrophotography (AREA)
- Controlling Sheets Or Webs (AREA)
Description
第１図は本実施例の用紙ジヤム検知装置を含む
画像形成装置の構成図、第２図も本実施例の用紙
ジヤム検知装置を含む画像形成装置の構成図、第
３図は本実施例の用紙ジヤム検知装置を含む画像
形成装置内の制御回路図、第４図ａは用紙ジヤム
検知のフローチヤート、第４図ｂは同図ａのタイ
ムチヤート、第５図ａは他の実施例の用紙ジヤム
検知のフローチヤート、第５図ｂは同図ａのタイ
ムチヤート、第６図ａは従来の用紙ジヤム検知の
タイムチヤート、第６図ｂ，ｃは同図ａのフロー
チヤートである。
１……画像形成装置、２……画像形成部、１０
ａ……用紙サイズ検知センサ、１３……定着器、
１３ａ……熱ロール、１３ｂ……圧接ロール、１
７……排紙スイツチ、１７ａ……発光素子、１７
ｂ……受光素子、１９……ＣＰＵ、２０……ＲＯ
Ｍ、２１……ＲＡＭ。
FIG. 1 is a block diagram of an image forming apparatus including a paper jam detection device of this embodiment, FIG. 2 is a block diagram of an image forming apparatus including a paper jam detection device of this embodiment, and FIG. 3 is a block diagram of an image forming apparatus including a paper jam detection device of this embodiment. A control circuit diagram in the image forming apparatus including a paper jam detection device, FIG. 4a is a flowchart of paper jam detection, FIG. 4b is a time chart of FIG. Flowchart of paper jam detection; FIG. 5B is a time chart of FIG. 5A; FIG. 6A is a time chart of conventional paper jam detection; FIGS. 6B and C are flowcharts of FIG. 6A. 1... Image forming device, 2... Image forming section, 10
a...Paper size detection sensor, 13...Fuser,
13a... Heat roll, 13b... Pressure roll, 1
7... Paper discharge switch, 17a... Light emitting element, 17
b... Light receiving element, 19... CPU, 20... RO
M, 21...RAM.
Claims (1)
用紙の存在を検知する用紙センサにより用紙ジヤ
ム検知を行なう用紙ジヤム検知装置において、 使用する用紙の長さをｌ１（mm）、前記定着装
置と用紙センサの間隔をｌ２（mm）、前記用紙の
搬送速度をＶ（mm／ｓ）としたとき、ｌ１，ｌ２
，Ｖを演算する演算手段を設け、該演算手段の演
算結果である時間ＴがＴ＜ｌ１−ｌ２Ｖのとき前
記演算手段がジヤム信号を出力することを特徴と
する用紙ジヤム検知装置。[Scope of Claim for Utility Model Registration] In a paper jam detection device that detects a paper jam using a paper sensor that detects the presence of paper disposed downstream of a fixing device on a paper conveyance path, the length of the paper used is l. 1 (mm), the distance between the fixing device and the paper sensor is l 2 (mm), and the transport speed of the paper is V (mm/s), l 1 , l 2
.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987121262U JPH0649565Y2 (en) | 1987-08-07 | 1987-08-07 | Paper jam detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987121262U JPH0649565Y2 (en) | 1987-08-07 | 1987-08-07 | Paper jam detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6426741U true JPS6426741U (en) | 1989-02-15 |
| JPH0649565Y2 JPH0649565Y2 (en) | 1994-12-14 |
Family
ID=31368110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987121262U Expired - Lifetime JPH0649565Y2 (en) | 1987-08-07 | 1987-08-07 | Paper jam detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0649565Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7267217B2 (en) | 2005-01-28 | 2007-09-11 | Seiko Epson Corporation | Apparatus and method for detecting removal of conveyed work |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5596963A (en) * | 1979-01-18 | 1980-07-23 | Minolta Camera Co Ltd | Jam detector in copying machine |
| JPS55151653A (en) * | 1979-05-17 | 1980-11-26 | Canon Inc | Image forming apparatus |
-
1987
- 1987-08-07 JP JP1987121262U patent/JPH0649565Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5596963A (en) * | 1979-01-18 | 1980-07-23 | Minolta Camera Co Ltd | Jam detector in copying machine |
| JPS55151653A (en) * | 1979-05-17 | 1980-11-26 | Canon Inc | Image forming apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7267217B2 (en) | 2005-01-28 | 2007-09-11 | Seiko Epson Corporation | Apparatus and method for detecting removal of conveyed work |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0649565Y2 (en) | 1994-12-14 |
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