JPS62201764A - Image-transferred sheet conveying device for copying machine - Google Patents
Image-transferred sheet conveying device for copying machineInfo
- Publication number
- JPS62201764A JPS62201764A JP61044997A JP4499786A JPS62201764A JP S62201764 A JPS62201764 A JP S62201764A JP 61044997 A JP61044997 A JP 61044997A JP 4499786 A JP4499786 A JP 4499786A JP S62201764 A JPS62201764 A JP S62201764A
- Authority
- JP
- Japan
- Prior art keywords
- roller
- pair
- drive roller
- lower drive
- transferred paper
- 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
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 18
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 6
- 239000000057 synthetic resin Substances 0.000 claims abstract description 6
- 108091008695 photoreceptors Proteins 0.000 claims description 8
- 229920001971 elastomer Polymers 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 description 13
- 230000003111 delayed effect Effects 0.000 description 5
- 230000037303 wrinkles Effects 0.000 description 3
- 229930182556 Polyacetal Natural products 0.000 description 2
- 229920006311 Urethane elastomer Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
この発明は複写機の転写済用紙搬送装置に関し、更に詳
しくは、感光体ドラムから転写済用紙を分離するために
感光体ドラムの片側のみに分離手段を配設し、更に定着
ローラに至るまでに２つのローラ対をそれぞれ分離手段
側に介設した複写機の転写済用紙搬送装置に関する。DETAILED DESCRIPTION OF THE INVENTION (A) Industrial Application Field The present invention relates to a transferred paper conveying device for a copying machine, and more specifically, it relates to a transferred paper conveying device for a copying machine, and more specifically, it is used to transport only one side of the photoreceptor drum in order to separate the transferred paper from the photoreceptor drum. The present invention relates to a transferred paper conveyance device for a copying machine, in which a separating means is disposed on the side of the copying machine, and two roller pairs are interposed on the separating means side before reaching the fixing roller.
（０）従来の技術及び発明が解決しようとする問題点
感光体ドラムから分離された転写済用紙を定着手段に搬
送する場合、従来は転写済用紙をサクションにより搬送
ベルト上に吸引保持して確実に搬送できるようにしてい
たが、構造が複雑になると共にコストが高くつくという
問題があった。(0) Problems to be Solved by the Prior Art and the Invention When conveying the transferred paper separated from the photoconductor drum to the fixing means, conventionally the transferred paper is suctioned and held on the conveying belt by suction to ensure a secure transfer. However, the problem was that the structure was complicated and the cost was high.
これらの問題を解決できる手段としては、例えば搬送ロ
ーラが用いられる。しかしこの搬送ローラは、用紙上に
転写されたトナー像が未だ定着されていないため接触で
きず、従って通常転写済用紙の片側余白のみに接触（挟
持）するよう設置されているに過ぎない。しかも第３図
に記載のごとく、感光体ドラム（３ａ）から片側分離ベ
ルト（４ａ）により転写済用紙（Ｐａ）を分離した後、
その転写済用紙は、上ローラ（７ａ）及び下駆動ローラ
（８ａ）からなる上流側ローラ対と、上ローラフ１０ａ
）及び十駆動ローラ（１１ａ）からなる下流側ローラ対
により定着［１−ラ（６ａ）へ搬送されていた。As a means to solve these problems, for example, a conveyance roller is used. However, this conveyance roller cannot contact the toner image transferred onto the paper because it has not yet been fixed, and therefore is normally installed so as to contact (pindle) only one side margin of the transferred paper. Moreover, as shown in FIG. 3, after the transferred paper (Pa) is separated from the photosensitive drum (3a) by the one-sided separation belt (4a),
The transferred paper is transferred between an upstream roller pair consisting of an upper roller (7a) and a lower drive roller (8a), and an upper roller roller 10a.
) and a pair of downstream rollers consisting of a drive roller (11a) to the fixing roller (6a).
ところが、転写済用紙（Ｐａ）が各ローラ対で搬送され
る場合、転写済用紙（Ｐａ）の先端が各日−ラ対のかみ
合点にツブ点）に直接至ることは少なく、従ってローラ
対に至るごとに転写済用紙（Ｐａ ）のローラ対接触側
、（片側ベルト側）はわずかづつおくれで搬送されるこ
とになる。However, when the transferred paper (Pa) is conveyed by each pair of rollers, the leading edge of the transferred paper (Pa) rarely reaches directly to the engagement point of each pair of rollers (the lug point); Each time the transferred paper (Pa) is conveyed, the roller-contact side (on one side of the belt) is slightly delayed.
かくして上述のように、感光体ドラム（３ａ）から定着
ローラ（６ａ）に至る間に、二つのローラ対が介設され
ている場合には、転写済用紙（Ｐａ ）は、分離ベルト
側が遅れることが多く、それによって平行にならずに斜
めに定着ローラ（６ａ）に至り、しわ寄りを起こしたり
、そのゆがみが上流側に影響して用紙の後端転写ずれ・
転写ゆがみを起こすおそれがあった。Thus, as described above, when two pairs of rollers are interposed between the photoreceptor drum (3a) and the fixing roller (6a), the transferred paper (Pa) may be delayed on the separation belt side. As a result, the paper reaches the fixing roller (6a) diagonally instead of parallel, causing wrinkles, and the distortion affects the upstream side, resulting in misalignment and transfer of the trailing edge of the paper.
There was a risk of transfer distortion.
（ハ）問題点を解決するための手段及びその作用この発
明は、複写機本体に回転可能に設置された感光体ドラム
と、この感光体ドラムから転写済用紙を分離するために
感光体ドラムの片側に配設された片側分離手段と、分離
された転写済用紙の搬送手段と、定着手段とを備え、
前記搬送手段が、上ローラ及び下駆動ローラからそれぞ
れ構成される上流側及び下流側ローラ対からなり、下流
側ローラ対における下駆動ローラの転写済用紙に対する
すべり摩擦が上ローラのそれに比し小さく、且つ下流側
の下駆動ローラの周速度が上流側の下駆動ローラのそれ
より大きい複写機の転写済用紙搬送装置である。(c) Means for solving the problem and its operation This invention includes a photosensitive drum rotatably installed in the main body of a copying machine, and a photosensitive drum for separating transferred paper from the photosensitive drum. The apparatus includes a one-sided separating means disposed on one side, a conveying means for the separated transferred paper, and a fixing means, and the conveying means includes upstream and downstream rollers each comprising an upper roller and a lower driving roller. In the downstream roller pair, the sliding friction of the lower drive roller against the transferred paper is smaller than that of the upper roller, and the circumferential speed of the downstream lower drive roller is higher than that of the upstream lower drive roller. This is the transferred paper transport device of the machine.
すなわち、この発明は、下流側ローラ対における両ロー
ラのすべり摩擦、及び上流側と下流側ローラ対における
両駆動ローラの周速度を変えることによって、各ローラ
対によって生じる転写済用紙の一方側辺に生じる遅れを
とりもどそうとするものである。特に下流側駆動ローラ
のすべりやすさと周速度の早さを利用して転写済用紙の
一方側辺の遅れをとりもどして他方側辺に合致させ、そ
れによって転写済用紙を平行に定着ローラへ搬送できる
ようにするわけである。That is, the present invention changes the sliding friction of both rollers in the downstream roller pair and the circumferential speed of both drive rollers in the upstream and downstream roller pairs, thereby reducing the amount of damage caused by each roller pair on one side of the transferred paper. This is an attempt to make up for any delays that may occur. In particular, by utilizing the slipperiness and high circumferential speed of the downstream drive roller, the lag on one side of the transferred paper is recovered and matched with the other side, thereby making it possible to convey the transferred paper in parallel to the fixing roller. This is how we do it.
（ニ）実施例
以下図に示す実施例に基いてこの発明を詳述する。なお
、これによってこの発明が限定されるものではない。(d) Examples The present invention will be described in detail below based on examples shown in the drawings. Note that this invention is not limited to this.
第１〜２図において、複写機の転写済用紙分離搬送装置
（１）は、複写機本体に回転可能に設置された感光体ド
ラム（３）と、この感光体ドラムから転写済用紙（Ｐ）
を分離するために感光体ドラム（３）の片側に配設され
た片側分離ベルト（４）と、分離された転写済用紙（Ｐ
）の搬送手段（５）と、定着ローラ（６）とからなる。In Figures 1 and 2, a transferred paper separation and conveyance device (1) of a copying machine includes a photosensitive drum (3) rotatably installed in the main body of the copying machine, and a transferred paper (P) from this photosensitive drum.
A one-sided separation belt (4) is installed on one side of the photoreceptor drum (3) to separate the transferred paper (P
) and a fixing roller (6).
なお、（１３１（１４）は搬送ガイド板、０５）は分離
チャージャーである。Note that (131 (14) is a conveyance guide plate, and 05 is a separation charger.
しかるに搬送手段（５）は、合成樹脂製上ローラ（刀及
びゴム製下駆動ローラ（８）からなる上流側ローラ対（
９）と、ゴム製上ローラ□□□及び合成樹脂製下駆動ロ
ーラロυからなる下流側ローラ対［Ｆ］とからなり、特
にこの下流側ローラ対の下駆動ローラ０υは他の下駆動
ローラ（８）に比して大径に設定している。なお、（ト
）はガイド板０３に設けられた切欠である。However, the conveying means (5) consists of an upstream roller pair (8) consisting of a synthetic resin upper roller and a rubber lower drive roller (8).
9), and a downstream roller pair [F] consisting of a rubber upper roller □□□ and a synthetic resin lower drive roller υ. In particular, the lower drive roller 0υ of this downstream roller pair is the other lower drive roller ( The diameter is set larger than that of 8). Note that (g) is a notch provided in the guide plate 03.
一方、上流側ローラ対（９）及び下駆動ローラ（１１）
は、転写済用紙上に転写されたトナー像が未だ定着され
ていないためトナー像転写部分では接触できず、従って
転写済用紙の、分離ベルト（４）側に形成された片側余
白（Ｂ）のみに接触（挟持）するよう設置されている。On the other hand, the upstream roller pair (9) and the lower drive roller (11)
Since the toner image transferred to the transferred paper has not yet been fixed, it cannot be contacted at the toner image transfer area, and therefore only the one side margin (B) formed on the side of the separation belt (4) of the transferred paper It is installed so that it contacts (pinches) the
かくして、感光体ドラム（３）から片側分離ベルト（４
）により分離された転写済用紙（Ｐ）は、上流側ローラ
対（９）により、そのローラ対側、つまり片側分離ベル
ト（４）設置側において搬送遅れを生じやすい。すなわ
ち、転写済用紙（Ｐ）は、その先端がローラ対（９）の
かみ合点にツブ点）に直接至ることは少なく、従って転
写済用紙のローラ対接触側はわずかづつ遅れることにな
る。これに対して転写済用紙のローラ対接触側に対し反
対側は、ローラ対との接触がないので遅れることがなく
、結局転写済用紙のローラ対接触側のみが遅れるわけで
ある。しかし下流側ローラ対［Ｆ］の下駆動ローラ０υ
が大径で周速度が太き（、しかも用紙に対しすべりやす
い合成樹脂製で構成されているので、上流側における転
写済用紙（Ｐ）の遅れを適宜とりもどすことができるの
で（下駆動ローラのすべりにより、転写済用紙のゆるみ
が取り除かれるだけで、強引に転写済用紙を搬送するこ
とはない）、結局転写済用紙（Ｐ）を平行に調整して定
着ローラ（６）へ送り込むことができる。従って従来の
ような斜めに送り込む場合に生じる、しわ寄り、後端の
転写ずれ、転写のゆがみなどの防止が可能になる。Thus, one side separation belt (4) is removed from the photoreceptor drum (3).
) The transferred paper (P) separated by the upstream roller pair (9) tends to be delayed in conveyance on the opposite side of the rollers, that is, on the side where the one-sided separation belt (4) is installed. That is, the leading edge of the transferred paper (P) rarely reaches directly to the engaging point of the roller pair (9) (the nub point), and therefore the side of the transferred paper that comes into contact with the roller pair is delayed little by little. On the other hand, the side of the transferred paper opposite to the roller pair contact side does not come into contact with the roller pair, so there is no delay, and in the end only the roller pair contact side of the transferred paper is delayed. However, the lower drive roller 0υ of the downstream roller pair [F]
has a large diameter and a high circumferential speed (and is made of synthetic resin that easily slips on the paper, so it is possible to appropriately compensate for the delay of the transferred paper (P) on the upstream side (lower drive roller (Sliding only removes the looseness of the transferred paper and does not forcibly transport the transferred paper.) In the end, the transferred paper (P) can be adjusted parallel and sent to the fixing roller (6). Therefore, it is possible to prevent wrinkles, misalignment of the rear end of the transfer, distortion of the transfer, etc. that occur when the transfer sheet is fed obliquely as in the conventional method.
なお、参考までに各ローラ対の寸法・材料例を挙げれば
次のとおりである。For reference, examples of the dimensions and materials of each pair of rollers are as follows.
〔材 料〕 〔外径〕
上流側の上ローラ（７）：
ポリアセタール樹脂 １０，０ｍｍ上流側の下駆動
ローラ（８）：
ウレタンゴム １６．０ｍｍ下流側の上ロー
ラ（ト））：
ウレタンゴム １０．０ｍｍ下流側の下駆動
ローラ（１υ：
ポリアセタール樹脂 １６．３ｍｍまた、各ローラ
を形成する合成樹脂の他例としてはＡＢＳ樹脂、同じく
ゴムの他例としてはクロロブレンゴムがそれぞれ挙げら
れる。[Material] [Outer diameter] Upstream upper roller (7): Polyacetal resin 10.0 mm Upstream lower drive roller (8): Urethane rubber 16.0 mm Downstream upper roller (G): Urethane rubber 10 Lower drive roller (1υ) on the downstream side (1υ: polyacetal resin 16.3 mm) Other examples of synthetic resins for forming each roller include ABS resin, and examples of rubber include chloroprene rubber.
更に本発明においては、分離手段として分離ベルトを用
いるものを説明したが、これに限定されるものではなく
、所謂分離爪を用いる型式のもの、或いは、コロナ方電
器を用いる型式のものにおいても適用可能である。Further, in the present invention, a method using a separation belt as a separation means has been described, but the present invention is not limited to this, and can also be applied to a type using a so-called separation claw or a type using a corona electric device. It is possible.
又、定着手段としては、ローラ対により定着せしめるも
のを例に説明したが、ローラと板状体との間に用紙を挟
圧搬送することにより定着せしめる型式のものにおいて
も適用可能である。Although the fixing means has been described using a pair of rollers for fixing, it is also applicable to a type of fixing means that fixes the paper by conveying the paper under pressure between a roller and a plate-like member.
（ホ）発明の効果
この発明によれば、搬送手段にサクションを用いる搬送
ベルト型式のものを採用する必要がなく、従ってコスト
が安く、且つ構造が簡単な複写機の転写済用紙搬送装置
となり、更に転写済用紙のしわ寄り、後端転写ずれ、転
写ゆがみを防止できる。(e) Effects of the Invention According to the present invention, there is no need to adopt a conveyor belt type conveyor using suction as a conveyance means, and therefore the transferred paper conveyance device for a copying machine is low in cost and has a simple structure. Furthermore, it is possible to prevent wrinkles of the transferred paper, misalignment of the trailing edge of the transferred paper, and distortion of the transfer.
第１図はこの発明の一実施例を示す要部機能側面説明図
、第２図はその要部機能平面説明図、第３図は従来例を
示す要部機能説明図である。
（１）・・・・・・複写機の転写済用紙分離搬送装置、
（３）・・・・・・感光体ドラム、 （４）・・・・・
・片側分離ベルト、（５）・・・・・・搬送手段、
（６）・・・・・・定着ローラ、（刀（ト）・・・・
・・上ローラ、 （８） （１υ・・・・・・下駆動
ローラ、（９）・・・・・・上流側ローラ対、■・・・
・・・下流側ローラ対。
第３図FIG. 1 is a functional side view of the main part showing an embodiment of the present invention, FIG. 2 is a plan view of the main part functionally, and FIG. 3 is a functional explanatory diagram of the main part showing a conventional example. (1)・・・Transferred paper separation and conveyance device of copying machine,
(3)...Photosensitive drum, (4)...
・One side separation belt, (5)... Conveyance means,
(6)...Fixing roller, (sword (g)...
...Upper roller, (8) (1υ...Lower drive roller, (9)...Upstream roller pair, ■...
...downstream roller pair. Figure 3
Claims (1)
、この感光体ドラムから転写済用紙を分離するために感
光体ドラムの片側に配設された分離手段と、分離された
転写済用紙の搬送手段と、定着手段とを備え、 前記搬送手段が、上ローラ及び下駆動ローラからそれぞ
れ構成される上流側及び下流側ローラ対からなり、下流
側ローラ対における下駆動ローラの転写済用紙に対する
すベり摩擦が上ローラのそれに比し小さく、且つ下流側
の下駆動ローラの周速度が上流側の下駆動ローラのそれ
より大きい複写機の転写済用紙搬送装置。 ２、下流側ローラ対における下駆動ローラが合成樹脂製
ローラ、同じく上ローラがゴム製ローラからそれぞれな
る特許請求の範囲第１項に記載の装置。 ３、下流側ローラ対における下駆動ローラの外径が、上
流側ローラ対における下駆動ローラのそれより大きい特
許請求の範囲第１項又は第２項に記載の装置。[Scope of Claims] 1. A photoreceptor drum rotatably installed in the main body of the copying machine, and a separating means provided on one side of the photoreceptor drum to separate the transferred paper from the photoreceptor drum; A means for transporting the separated transferred paper and a fixing means, the transport means comprising a pair of upstream and downstream rollers each comprising an upper roller and a lower drive roller, and a lower drive roller of the pair of downstream rollers. A transfer paper conveying device for a copying machine in which the sliding friction of the roller against the transferred paper is smaller than that of the upper roller, and the circumferential speed of the lower drive roller on the downstream side is higher than that of the lower drive roller on the upstream side. 2. The device according to claim 1, wherein the lower drive roller of the downstream roller pair is a synthetic resin roller, and the upper roller is a rubber roller. 3. The device according to claim 1 or 2, wherein the outer diameter of the lower drive roller in the downstream roller pair is larger than that of the lower drive roller in the upstream roller pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61044997A JPS62201764A (en) | 1986-02-28 | 1986-02-28 | Image-transferred sheet conveying device for copying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61044997A JPS62201764A (en) | 1986-02-28 | 1986-02-28 | Image-transferred sheet conveying device for copying machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62201764A true JPS62201764A (en) | 1987-09-05 |
Family
ID=12707065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61044997A Pending JPS62201764A (en) | 1986-02-28 | 1986-02-28 | Image-transferred sheet conveying device for copying machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62201764A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS648155A (en) * | 1987-06-30 | 1989-01-12 | Mita Industrial Co Ltd | Sheet transfer device in image forming apparatus |
-
1986
- 1986-02-28 JP JP61044997A patent/JPS62201764A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS648155A (en) * | 1987-06-30 | 1989-01-12 | Mita Industrial Co Ltd | Sheet transfer device in image forming apparatus |
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