JPH0457783U - - Google Patents
Info
- Publication number
- JPH0457783U JPH0457783U JP10069290U JP10069290U JPH0457783U JP H0457783 U JPH0457783 U JP H0457783U JP 10069290 U JP10069290 U JP 10069290U JP 10069290 U JP10069290 U JP 10069290U JP H0457783 U JPH0457783 U JP H0457783U
- Authority
- JP
- Japan
- Prior art keywords
- paper
- detection
- reflective optical
- output signal
- signal level
- 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 13
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 1
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Controlling Sheets Or Webs (AREA)
Description
第１図はこの考案が適用される複写機の実施例
を示す概略構成図、第２図は搬送ベルト部分の側
断面図、第３図は搬送ベルト部分の斜視図、第４
図は用紙検知装置を示す分解斜視図、第５図は用
紙検知装置の配置構成を示す側断面図、第６図ａ
，ｂ，ｃは用紙の透明板部材上の搬送過程を示す
説明図、第７図は従来の用紙検知回路の概略構成
図、第８図はこの実施例の用紙検知回路を示す概
略構成図、第９図は反射型光学式検知素子の出力
信号レベルを示すタイムチヤート、第１０図はこ
の実施例のマイクロコンピユータの制御例を示す
フローチヤートである。
１３……案内部材（搬送ベルト）、３０……反
射型光学式検知素子（転写紙検知センサ）、３０
ａ……発光部、３０ｂ……受光部、３１……検知
窓、３３……透明板部材。
FIG. 1 is a schematic configuration diagram showing an embodiment of a copying machine to which this invention is applied, FIG. 2 is a side sectional view of the conveyor belt portion, FIG. 3 is a perspective view of the conveyor belt portion, and FIG.
The figure is an exploded perspective view showing the paper detecting device, FIG. 5 is a side sectional view showing the layout configuration of the paper detecting device, and FIG. 6 a
, b, c are explanatory diagrams showing the conveyance process of paper on a transparent plate member, FIG. 7 is a schematic diagram of a conventional paper detection circuit, and FIG. 8 is a schematic diagram of a paper detection circuit of this embodiment. FIG. 9 is a time chart showing the output signal level of the reflective optical detection element, and FIG. 10 is a flow chart showing an example of control by the microcomputer of this embodiment. 13... Guide member (transport belt), 30... Reflective optical detection element (transfer paper detection sensor), 30
a... Light emitting section, 30b... Light receiving section, 31... Detection window, 33... Transparent plate member.
Claims (1)
を、該搬送面の裏側に設けた発光部及び受光部よ
り成る反射型光学式検知素子により、搬送面に設
けた検知窓を介して検知する用紙検知装置におい
て、 前記検知窓には、用紙の搬入側は前記搬送面よ
り低く、用紙の出口側では該搬送面より高くなる
ようにわづかに傾斜した形で透明板部材が取り付
けられており、 用紙の供給を開始する時の前記反射型光学式検
知素子の出力信号レベルを用紙検知の基準出力信
号レベルとしていることを特徴とする用紙検知装
置。[Claims for Utility Model Registration] The presence or absence of paper being conveyed along the conveyance surface of a guide member is determined by a reflective optical detection element comprising a light emitting part and a light receiving part provided on the back side of the conveyance surface. In the paper detection device that detects the paper through a detection window, the detection window has a slightly inclined shape so that the paper entry side is lower than the transport surface and the paper exit side is higher than the transport surface. 1. A paper detection device, characterized in that a transparent plate member is attached, and the output signal level of the reflective optical detection element at the time of starting paper supply is set as a reference output signal level for paper detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10069290U JPH0457783U (en) | 1990-09-26 | 1990-09-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10069290U JPH0457783U (en) | 1990-09-26 | 1990-09-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0457783U true JPH0457783U (en) | 1992-05-18 |
Family
ID=31843526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10069290U Pending JPH0457783U (en) | 1990-09-26 | 1990-09-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0457783U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011121677A (en) * | 2009-12-09 | 2011-06-23 | Fuji Xerox Co Ltd | Sheet material conveyor, image forming device |
| JP2011121662A (en) * | 2009-12-08 | 2011-06-23 | Fuji Xerox Co Ltd | Sheet material carrying device, and image forming device |
| JP2015112204A (en) * | 2013-12-10 | 2015-06-22 | シャープ株式会社 | Vacuum cleaner |
-
1990
- 1990-09-26 JP JP10069290U patent/JPH0457783U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011121662A (en) * | 2009-12-08 | 2011-06-23 | Fuji Xerox Co Ltd | Sheet material carrying device, and image forming device |
| JP2011121677A (en) * | 2009-12-09 | 2011-06-23 | Fuji Xerox Co Ltd | Sheet material conveyor, image forming device |
| JP2015112204A (en) * | 2013-12-10 | 2015-06-22 | シャープ株式会社 | Vacuum cleaner |
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