JPH0320368U - - Google Patents
Info
- Publication number
- JPH0320368U JPH0320368U JP8184789U JP8184789U JPH0320368U JP H0320368 U JPH0320368 U JP H0320368U JP 8184789 U JP8184789 U JP 8184789U JP 8184789 U JP8184789 U JP 8184789U JP H0320368 U JPH0320368 U JP H0320368U
- Authority
- JP
- Japan
- Prior art keywords
- toner
- transfer belt
- width
- cleaning device
- photoconductor
- 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
Landscapes
- Cleaning In Electrography (AREA)
Description
第１図、第２図はこの考案の実施例に係る転写
ベルト装置を示し、第１図は斜視図、第２図は駆
動部の断面図、第３図は上記実施例の異常表示部
を示すブロツク図、第４図は転写ベルトを用いた
レーザプリンタを示す断面図である。
１……転写ベルト、５……第１の感光体ドラム
、６……第２の感光体ドラム、７……帯電器、８
……除電帯電器、９，１０……現像器、１２，１
３……感光体クリーニング装置、１４……クリー
ニングブレード、１５……回収タンク、１７……
転写用紙、３１……作像装置、３５，３６，３７
……トナー検知手段、３９……比較手段、４０…
…記憶手段、４１……異常表示手段。
1 and 2 show a transfer belt device according to an embodiment of this invention, FIG. 1 is a perspective view, FIG. 2 is a sectional view of the drive section, and FIG. 3 is an abnormality display section of the above embodiment. The block diagram shown in FIG. 4 is a sectional view showing a laser printer using a transfer belt. DESCRIPTION OF SYMBOLS 1... Transfer belt, 5... First photosensitive drum, 6... Second photosensitive drum, 7... Charger, 8
...Electrostatic charger, 9,10...Developer, 12,1
3...Photoconductor cleaning device, 14...Cleaning blade, 15...Recovery tank, 17...
Transfer paper, 31... Image forming device, 35, 36, 37
...Toner detection means, 39...Comparison means, 40...
...Storage means, 41...Abnormality display means.
Claims (1)
体上のトナー像を転写後、感光体上に残留したト
ナーを感光体クリーニング装置で清掃し、除電帯
電器で除電された転写ベルト表面上に残留したト
ナーを転写ベルトクリーニング装置で清掃する画
像形成装置において、 転写ベルト幅と転写ベルトクリーニング装置の
幅を感光体クリーニング装置の両端部間の幅より
大きくしたことを特徴とする画像形成装置。 ２ 転写ベルトの幅内で除電帯電器より下流の位
置に設けられ転写ベルト表面上の残留トナーを検
知するトナー検知手段と、該トナー検知手段で検
知したトナー濃度とあらかじめ定められたトナー
濃度とを比較する比較手段と、検知したトナー濃
度があらかじめ定められたトナー濃度を越えたと
きに上記比較手段から出力される信号により異常
を表示する異常表示手段とを備えた請求項１記載
の画像形成装置。[Claims for Utility Model Registration] 1. After the toner image on the photoconductor is transferred to the transfer paper that is electrostatically attracted to the transfer belt, the toner remaining on the photoconductor is cleaned with a photoconductor cleaning device, and the toner image is removed with an antistatic charger. In an image forming apparatus that uses a transfer belt cleaning device to clean the toner remaining on the surface of a transfer belt that has been neutralized, the width of the transfer belt and the width of the transfer belt cleaning device are made larger than the width between both ends of the photoreceptor cleaning device. Features of the image forming device. 2. A toner detection means that is provided at a position downstream from the static eliminator charger within the width of the transfer belt and detects residual toner on the surface of the transfer belt, and a toner concentration detected by the toner detection means and a predetermined toner concentration. The image forming apparatus according to claim 1, further comprising a comparison means for making a comparison, and an abnormality display means for displaying an abnormality by a signal output from the comparison means when the detected toner density exceeds a predetermined toner density. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8184789U JPH0320368U (en) | 1989-07-11 | 1989-07-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8184789U JPH0320368U (en) | 1989-07-11 | 1989-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0320368U true JPH0320368U (en) | 1991-02-27 |
Family
ID=31628144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8184789U Pending JPH0320368U (en) | 1989-07-11 | 1989-07-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0320368U (en) |
-
1989
- 1989-07-11 JP JP8184789U patent/JPH0320368U/ja active Pending
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