JPH0794293B2 - Paper transport device - Google Patents
Paper transport deviceInfo
- Publication number
- JPH0794293B2 JPH0794293B2 JP62082122A JP8212287A JPH0794293B2 JP H0794293 B2 JPH0794293 B2 JP H0794293B2 JP 62082122 A JP62082122 A JP 62082122A JP 8212287 A JP8212287 A JP 8212287A JP H0794293 B2 JPH0794293 B2 JP H0794293B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- guides
- sheet conveying
- distance
- sheet
- 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.)
- Expired - Fee Related
Links
Landscapes
- Delivering By Means Of Belts And Rollers (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、画像形成装置における用紙搬送ガイドに関す
るものである。The present invention relates to a sheet conveyance guide in an image forming apparatus.
従来、レジストローラに用紙を案内するガイド板による
搬送路のレジストローラの軸方向のすき間は、はがきや
名刺や封筒等の厚紙と普通紙が区別なく一定であった。Conventionally, the gap in the axial direction of the registration rollers in the conveyance path formed by the guide plate that guides the paper to the registration rollers is constant for thick paper such as postcards, business cards, and envelopes and plain paper.
〔発明が解決しようとしている問題点〕 前述のように、従来はレジストローラへ案内する搬送路
のすき間がレジストローラの軸方向に対して一定である
ため、はがきや封筒等の厚紙を通常のすき間の搬送路に
通紙しようとすると、搬送抵抗が大きくなり、うまくレ
ジストローラに送れなかった。また、逆に封筒を送るた
めに搬送路を広げると、今度は普通紙においてうまくレ
ジストローラのニツプに紙の先端がかみ込まれなくな
り、いずれも斜行やレジスト不良などの原因となってい
た。[Problems to be Solved by the Invention] As described above, conventionally, since the clearance of the conveying path for guiding to the registration rollers is constant in the axial direction of the registration rollers, thick paper such as postcards and envelopes can be normally separated. When trying to pass the paper through the conveyance path, the conveyance resistance increased, and the sheet could not be properly fed to the registration rollers. On the other hand, if the conveying path is widened to send the envelope, the leading edge of the plain paper will no longer be properly caught in the nip of the registration roller, which causes skewing or defective registration.
よって従来は、封筒などの厚紙などは使用用紙から除外
されるのが常であった。Therefore, conventionally, thick paper such as envelopes is usually excluded from the used paper.
本発明は上記問題点を解決するためになされたものであ
り、そのための構成は、 送られた用紙を一旦停止した後に送り出す一対のレジス
トローラと、 前記一対のレジストローラのニップに用紙を案内するた
めに、用紙の両方の面をそれぞれ案内する第１と第２の
ガイドと、 厚い用紙が通過する位置における前記第１と第２のガイ
ドの間隔を、他の部分の間隔よりも広く構成したことを
特徴とする用紙の搬送装置である。The present invention has been made to solve the above-mentioned problems, and a configuration therefor is to guide a sheet to a pair of registration rollers that temporarily stop the fed sheet and then feed the sheet, and a nip between the pair of registration rollers. To this end, the distance between the first and second guides for guiding both surfaces of the paper and the distance between the first and second guides at the position where the thick paper passes is made wider than that of the other portions. A sheet conveying device characterized by the above.
このような構成によって、薄い用紙がガイド間で踊った
り不安定な動きをしたりしないように第１と第２のガイ
ドの間隔を狭くしても、厚い用紙に対する抵抗を大きく
することがない。よって葉書や封筒等の厚い用紙から、
薄い普通紙までの広範囲な用紙の先端を、停止している
レジストローラ対のニップに全幅にわたって確実に当接
させ、用紙の斜行の矯正を確実に行うことができる。し
かも構成も簡単である。With such a configuration, even if the distance between the first and second guides is narrowed so that the thin paper does not dance between the guides or make an unstable movement, the resistance to the thick paper is not increased. Therefore, from thick paper such as postcards and envelopes,
The leading edge of a wide range of sheets up to thin plain paper can be surely brought into contact with the nip of the stopped registration roller pair over the entire width to reliably correct skew of the sheet. Moreover, the configuration is simple.
第１図及び第２図は本発明の実施例を示すものである。
１の紙カセツトに積載された用紙Ｐは２の給紙ローラ及
び３の分離パツトによって１枚づつ分離されて給紙され
る。1 and 2 show an embodiment of the present invention.
The sheets P stacked in one sheet cassette are separated and fed one by one by the sheet feeding roller 2 and the separating pad 3.
給紙された用紙Ｐは４の上ガイド板と５の下ガイド板に
よって形成される搬送路のすき間に沿って６のレジスト
上ローラと７のレジスト下ローラのニツプに案内され
る。The fed paper P is guided to the nip of the upper registration roller 6 and the lower registration roller 7 along the gap of the transport path formed by the upper guide plate 4 and the lower guide plate 5.
ここで、本実施例では紙の搬送基準は中央基準であり、
使用する封筒等厚紙の最大幅をl1とすると、上ガイドに
設けられたリブ4aは中央基準でＬの幅分削除されてい
る。ここでＬはＬ＞l1となっている。そのため搬送路の
すき間は封筒等の厚紙の搬送路ではt1、上記以外の搬送
路ではt2（ただしt1＞t2）となり、封筒等の厚紙に対し
ては搬送路のすき間が大きくなるため、搬送抵抗は少な
くなる。Here, in the present embodiment, the paper conveyance reference is the center reference,
Assuming that the maximum width of the thick paper such as an envelope used is l 1 , the rib 4a provided on the upper guide is deleted by the width L with respect to the center. Here, L is L> l 1 . Therefore, the clearance of the transport path is t 1 for thick paper transport paths such as envelopes, and t 2 for other transport paths (where t 1 > t 2 ), and the clearance of the transport path is larger for thick paper such as envelopes. Therefore, the conveyance resistance is reduced.
また、紙幅がＬより大きい普通紙（紙幅をl2）とする
と、l2−Ｌの部分の搬送路のすき間はt2と狭くなってい
る。また、本実施例では紙搬送基準は用紙の中央基準で
あるため、用紙の両端部 の部分が搬送路のすき間がt2となっている部分を通過す
ることになる。用紙の両端が搬送路のすき間が狭いt2の
部分を通過するため普通紙も安定してレジストローラ6,
7のニツプに案内することができる。If the paper width is larger than L and is plain paper (paper width is l 2 ), the gap of the conveyance path at the l 2 -L portion is as small as t 2 . Further, in this embodiment, since the paper conveyance reference is the center reference of the paper, both end portions of the paper are Will pass the part where the clearance of the transport path is t 2 . Since both ends of the paper pass through the part of t 2 where the gap of the transport path is narrow, plain paper is also stable in registration roller 6,
You can guide to 7 NIPPON.
実施例では、上ガイド板４のリブによって封筒通過範囲
の搬送路のすき間を変えているが、第３図に示すように
下ガイド板５によって、すき間を変えても同様の効果が
ある。In the embodiment, the rib of the upper guide plate 4 changes the gap of the conveying path in the envelope passage range, but the same effect can be obtained by changing the gap by the lower guide plate 5 as shown in FIG.
もちろん、上ガイド板と下ガイドの両方を変更してすき
間を変化させることも同様の効果が得られる。Of course, the same effect can be obtained by changing both the upper guide plate and the lower guide to change the gap.
上述したように本発明によると、薄い用紙がガイド間で
踊ったり不安定な動きをしたりしないように第１と第２
のガイドの間隔を狭くしても、厚い用紙に対する抵抗を
大きくすることがない。よって葉書や封筒等の厚い用紙
から、薄い普通紙までの広範囲な用紙の先端を、停止し
ているレジストローラ対のニップに全幅にわたって確実
に当接させ、用紙の斜行の矯正を確実に行うことができ
る。しかも構成も簡単である。As described above, according to the present invention, the first and second thin sheets are prevented from dancing or unstable movement between the guides.
Even if the space between the guides is narrowed, the resistance against thick paper is not increased. Therefore, the tip of a wide range of paper, from thick paper such as postcards and envelopes to thin plain paper, is surely brought into contact with the nip of the pair of registration rollers that are stopped over the entire width to ensure correct skewing of the paper. be able to. Moreover, the configuration is simple.
第１図は本発明の主断面図、 第２図は本発明の用紙の入口から見た図、 第３図は本発明の他の実施例を示した図である。 １は用紙カセツト ２は給紙ローラ ３は分離パツト ４は搬送上ガイド ５は搬送下ガイド ６は上レジストローラ ７は下レジストローラ ８は用紙案内部 FIG. 1 is a main sectional view of the present invention, FIG. 2 is a view as seen from the sheet inlet of the present invention, and FIG. 3 is a view showing another embodiment of the present invention. 1 is a paper cassette 2 is a paper feed roller 3 is a separation pad 4 is a conveyance upper guide 5 is a conveyance lower guide 6 is an upper registration roller 7 is a lower registration roller 8 is a paper guide unit
Claims (5)
一対のレジストローラと、 前記一対のレジストローラのニップに用紙を案内するた
めに、用紙の両方の面をそれぞれ案内する第１と第２の
ガイドと、 厚い用紙が通過する位置における前記第１と第２のガイ
ドの間隔を、他の部分の間隔よりも広く構成したことを
特徴とする用紙の搬送装置。1. A pair of registration rollers for feeding the fed paper after temporarily stopping it, and first and second guides for guiding both sides of the paper to guide the paper to a nip between the pair of registration rollers. The sheet conveying device is characterized in that the interval between the first guide and the second guide at the position where the thick sheet passes is wider than the interval of other portions.
傍のほうが両側部より広いことを特徴とする特許請求の
範囲第１項記載の用紙の搬送装置。2. The sheet conveying apparatus according to claim 1, wherein the distance between the first and second guides is wider near the center than at both sides.
は、郵便はがきの通過する幅より広いことを特徴とする
特許請求の範囲第２項記載の用紙の搬送装置。3. The sheet conveying apparatus according to claim 2, wherein the wide range of the distance between the first and second guides is wider than the width of a postcard.
は、封筒の通過する幅より広いことを特徴とする特許請
求の範囲第２項記載の用紙の搬送装置。4. The sheet conveying apparatus according to claim 2, wherein the wide range of the distance between the first and second guides is wider than the width of the envelope.
って２種類以上に異なるように構成したことを特徴とす
る特許請求の範囲第１項記載の用紙の搬送装置。5. The sheet conveying apparatus according to claim 1, wherein the distance between the first and second guides is different in two or more types depending on the position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62082122A JPH0794293B2 (en) | 1987-04-02 | 1987-04-02 | Paper transport device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62082122A JPH0794293B2 (en) | 1987-04-02 | 1987-04-02 | Paper transport device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63247245A JPS63247245A (en) | 1988-10-13 |
| JPH0794293B2 true JPH0794293B2 (en) | 1995-10-11 |
Family
ID=13765608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62082122A Expired - Fee Related JPH0794293B2 (en) | 1987-04-02 | 1987-04-02 | Paper transport device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0794293B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0748595Y2 (en) * | 1989-03-14 | 1995-11-08 | 株式会社テック | Multi-part medium transport device |
| JP5799779B2 (en) * | 2011-11-30 | 2015-10-28 | ブラザー工業株式会社 | Sheet transport device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59151175A (en) * | 1983-02-15 | 1984-08-29 | Toshiba Corp | Fixing device |
| JPS60180247U (en) * | 1984-05-10 | 1985-11-29 | 富士ゼロックス株式会社 | Paper guide plate to electrophotographic copier fixing device |
| JPS60180246U (en) * | 1984-05-10 | 1985-11-29 | 富士ゼロックス株式会社 | Electrophotocopy machine paper guide board |
-
1987
- 1987-04-02 JP JP62082122A patent/JPH0794293B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63247245A (en) | 1988-10-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |