JPH04169434A - Paper feeding device - Google Patents
Paper feeding deviceInfo
- Publication number
- JPH04169434A JPH04169434A JP29597790A JP29597790A JPH04169434A JP H04169434 A JPH04169434 A JP H04169434A JP 29597790 A JP29597790 A JP 29597790A JP 29597790 A JP29597790 A JP 29597790A JP H04169434 A JPH04169434 A JP H04169434A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- roller
- double feeding
- rollers
- separation
- 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
- 238000000926 separation method Methods 0.000 claims abstract description 14
- 238000004144 decalcomania Methods 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、重送防止ローラーを保有する電子写真複写装
置の給紙部に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a paper feeding section of an electrophotographic copying apparatus having a double-feed prevention roller.
［従来の技術］
従来、給紙方法は、第２図で示すように給紙ローラー１
、搬送ローラー２、分離ローラー３という構成である。[Prior Art] Conventionally, a paper feeding method uses a paper feeding roller 1 as shown in FIG.
, a conveyance roller 2, and a separation roller 3.
給紙ローラー１で転写しを給紙し、搬送ローラーと分離
ローラー３の間を通る。分離ローラー３は通常、搬送ロ
ーラーとうれまわっているが、転写紙が重送してきた場
合、逆回転し、転写紙を押しもどす。というように重送
防止の対策を行っている。The transferred paper is fed by a paper feed roller 1 and passes between a conveyance roller and a separation roller 3. The separation roller 3 normally functions as a conveyance roller, but when the transfer paper is fed in duplicate, it rotates in the opposite direction and pushes the transfer paper back. We are taking measures to prevent double feeding.
［発明が解決しようとしている課題］
しかしながら、上記従来例では、完全な重送防止は行わ
れず、一部重送したまま搬送され、画像 ・ののってい
ない転写紙が送られる。また、重送することにより本件
で転写紙が滞留するなどし、紙づまりをおこしたりする
という欠点があった。[Problems to be Solved by the Invention] However, in the above-mentioned conventional example, double feeding is not completely prevented, and the transfer paper is conveyed with partial double feeding, and the transfer paper without the image is fed. Further, due to double feeding, there is a drawback in that the transfer paper becomes stagnant in this case, resulting in paper jams.
［課題を解決するための手段及び作用］本発明によれば
、重送防止のための搬送ローラー、分離ローラーの組み
あわせをもう１つかまたは、それ以上設けることにより
転写紙の重送をより確実に防止したものである。[Means and effects for solving the problem] According to the present invention, by providing one or more combinations of conveyance rollers and separation rollers to prevent double feeding, double feeding of transfer paper can be more reliably carried out. This was to prevent this.
Ｕ実施例１コ
第１図は本発明をもっともよくあられしており、給紙ロ
ーラー１１第１搬送ローラー２、第１分離ローラー３、
第２搬送ローラー４、第２分離ローラー５である。重送
した転写紙が、第１分離ローラー３で防止されなかった
ばあい、第２分離ローラー５で防止される。Embodiment 1 FIG. 1 best illustrates the present invention, and includes a paper feed roller 11, a first conveyance roller 2, a first separation roller 3,
They are a second conveyance roller 4 and a second separation roller 5. If the double-fed transfer paper is not prevented by the first separation roller 3, it is prevented by the second separation roller 5.
［実施例２コ
［実施例１］と同様に、複写機本体に余裕があるばあい
、第３分離ローラーを設ける。[Example 2] Similar to [Example 1], if there is room in the main body of the copying machine, a third separation roller is provided.
［実施例３コ
紙の特性を考慮して、搬送ローラー、分離ローラーの押
圧の異なったものを第２番目にもってくる。[Example 3] Taking into account the characteristics of the paper, the conveying roller and separating roller are used with different pressures.
［発明の効果コ
以上説明したように分離ローラーを２つ以上設けたこと
によって転写紙の電送は改善される。現在、ＰＰＣ用紙
の動向をみると再生紙といったような品質のおちる紙が
使われだしている。このような転写紙は、上質紙と比べ
、紙間のμや、カセット−紙間のμがちがったりまた紙
のコシか弱かったり、カールしやすかったりし重送する
割合が多くなっている。しかし、再生紙等の転写紙のた
めに、カセットのμを変化させたり、その転写紙のコシ
に対応するカセットの爪を設けていると上質紙に弊害が
おこるおそれがある。よって、今回の発明は、どの紙に
おいても重送を防止できるという効果がある。[Effects of the Invention] As explained above, by providing two or more separating rollers, the electric transport of the transfer paper is improved. Looking at the current trends in PPC paper, we are seeing that recycled paper and other types of paper that will degrade are starting to be used. Compared to high-quality paper, such transfer paper has a different μ between sheets and between cassette and paper, has weak paper stiffness, is easily curled, and has a higher rate of double feeding. However, for transfer paper such as recycled paper, changing the μ of the cassette or providing a cassette claw corresponding to the stiffness of the transfer paper may cause damage to the high-quality paper. Therefore, the present invention has the effect of preventing double feeding of any paper.
【図面の簡単な説明】
第１図は、本発明を実施した給紙部の断面図である。
第２図は従来、使用されていた給紙部の断面図である。
１は給紙ローラー、２は第１搬送ローラー、３は第１分
離ローラー、４は第２搬送ローラー、５は第２分離ロー
ラー、BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a paper feed section in which the present invention is implemented. FIG. 2 is a sectional view of a conventionally used paper feeding section. 1 is a paper feed roller, 2 is a first conveyance roller, 3 is a first separation roller, 4 is a second conveyance roller, 5 is a second separation roller,
Claims (1)
、転写紙の重送を防止することを特徴とする給紙装置。(1) A paper feeding device characterized by having two or more transport rollers and two or more separation rollers to prevent double feeding of transfer paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29597790A JPH04169434A (en) | 1990-10-31 | 1990-10-31 | Paper feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29597790A JPH04169434A (en) | 1990-10-31 | 1990-10-31 | Paper feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04169434A true JPH04169434A (en) | 1992-06-17 |
Family
ID=17827546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29597790A Pending JPH04169434A (en) | 1990-10-31 | 1990-10-31 | Paper feeding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04169434A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002347959A (en) * | 2001-05-22 | 2002-12-04 | Glory Ltd | Paper sheet feeder |
-
1990
- 1990-10-31 JP JP29597790A patent/JPH04169434A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002347959A (en) * | 2001-05-22 | 2002-12-04 | Glory Ltd | Paper sheet feeder |
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