JPH01140362U - - Google Patents
Info
- Publication number
- JPH01140362U JPH01140362U JP3628288U JP3628288U JPH01140362U JP H01140362 U JPH01140362 U JP H01140362U JP 3628288 U JP3628288 U JP 3628288U JP 3628288 U JP3628288 U JP 3628288U JP H01140362 U JPH01140362 U JP H01140362U
- Authority
- JP
- Japan
- Prior art keywords
- paper
- sheet
- feeding
- section
- detecting means
- 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 7
- 238000007599 discharging Methods 0.000 claims 2
- 108091008695 photoreceptors Proteins 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Controlling Sheets Or Webs (AREA)
Description
第１図は従来装置の断面図、第２図は従来装置
のシーケンスブロツク図、第３図は本案の実施例
のシーケンスブロツク図、第４図は従来装置の始
動時フローチヤート、第５図は本案の実施例の始
動時フローチヤート、第６図は第３図のメモリ手
段内の情報を示す図、第７図は用紙検出器とメモ
リ手段内情報を示すタイムチヤート、第８図はメ
モリ手段内情報による用紙状態を示した図である
。
４…用紙検出器、５…用紙検出器、６…感光体
、７…メイン帯電器、８…現像器、９…転写器、
１０…用紙、１１…用紙搬送ガイド、１５…クリ
ーナ装置、１６…イレーズランプ、１７…給紙ト
レイ、１８…ピツクアツプローラ、１９，１９′
…レジストローラ、２０…定着器、２１，２１′
…排紙ローラ、２２…排紙トレイ、２３…露光源
。
Fig. 1 is a sectional view of the conventional device, Fig. 2 is a sequence block diagram of the conventional device, Fig. 3 is a sequence block diagram of the embodiment of the present invention, Fig. 4 is a flowchart at startup of the conventional device, and Fig. 5 is a sequence block diagram of the conventional device. A flowchart at startup of the embodiment of the present invention, FIG. 6 is a diagram showing information in the memory means of FIG. 3, FIG. 7 is a time chart showing the paper detector and information in the memory means, and FIG. 8 is a diagram showing the information in the memory means. FIG. 3 is a diagram illustrating a paper state based on internal information. 4...Paper detector, 5...Paper detector, 6...Photoconductor, 7...Main charger, 8...Developer, 9...Transfer device,
DESCRIPTION OF SYMBOLS 10... Paper, 11... Paper conveyance guide, 15... Cleaner device, 16... Erase lamp, 17... Paper feed tray, 18... Pick-up roller, 19, 19'
...Registration roller, 20 ...Fuser, 21, 21'
... Paper ejection roller, 22 ... Paper ejection tray, 23 ... Exposure source.
Claims (1)
紙手段により給紙されたかどうかチエツクする給
紙部用紙検出手段と、用紙を送り出す分離搬送手
段と、静電潜像を形成する感光体手段と、用紙に
トナー像を定着させる定着手段と、送紙経路上の
用紙状態を記憶するための不揮発記憶装置手段と
、用紙が電子写真プリンタから排紙されたかどう
かチエツクする排紙部用紙検出手段と、これらを
制御するための制御器手段よりなる電子写真プリ
ンタにおいて、前記給紙部用紙検出手段と排紙部
用紙検出手段の距離Ｌ１よりも短かい用紙長Ｌ２
の用紙（Ｌ１＞Ｌ２）が、給紙手段により給紙さ
れ、分離搬送手段により給紙部用紙検出手段と排
紙部用紙検出手段の間に用紙が搬送されて、前記
両用紙検出手段が用紙を検出していない場合は、
給紙部用紙検出手段と排紙部用紙検出手段の間に
用紙が有るという情報を不揮発記憶装置手段に記
憶するということを特徴とした電子写真プリンタ
の紙ジヤム検出装置。 A paper feeding means for feeding paper from a paper feeding tray, a paper feeding section paper detection means for checking whether or not paper has been fed by the paper feeding means, a separating and conveying means for sending out the paper, and a photoreceptor for forming an electrostatic latent image. a fixing means for fixing the toner image on the paper; a non-volatile storage means for storing the state of the paper on the paper feeding path; and a paper output section paper detection unit for checking whether the paper has been discharged from the electrophotographic printer. In the electrophotographic printer, the paper length L 2 is shorter than the distance L 1 between the paper feed section paper detection means and the paper discharge section paper detection means.
A sheet of paper (L 1 >L 2 ) is fed by the sheet feeding means, and the sheet is conveyed by the separation conveying means between the sheet feeding section sheet detecting means and the sheet discharging section sheet detecting means, and the sheet is conveyed between the sheet detecting means of the sheet feeding section and the sheet discharging section sheet detecting means. If the paper is not detected,
A paper jam detection device for an electrophotographic printer, characterized in that information indicating that paper is present between a paper feed unit paper detection unit and a paper discharge unit paper detection unit is stored in a nonvolatile storage device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3628288U JPH01140362U (en) | 1988-03-22 | 1988-03-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3628288U JPH01140362U (en) | 1988-03-22 | 1988-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01140362U true JPH01140362U (en) | 1989-09-26 |
Family
ID=31262894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3628288U Pending JPH01140362U (en) | 1988-03-22 | 1988-03-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01140362U (en) |
-
1988
- 1988-03-22 JP JP3628288U patent/JPH01140362U/ja active Pending
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