JP3073649B2 - Guide before transfer of image forming apparatus - Google Patents
Guide before transfer of image forming apparatusInfo
- Publication number
- JP3073649B2 JP3073649B2 JP06096161A JP9616194A JP3073649B2 JP 3073649 B2 JP3073649 B2 JP 3073649B2 JP 06096161 A JP06096161 A JP 06096161A JP 9616194 A JP9616194 A JP 9616194A JP 3073649 B2 JP3073649 B2 JP 3073649B2
- Authority
- JP
- Japan
- Prior art keywords
- transfer
- image forming
- forming apparatus
- guide
- transfer guide
- 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 - Lifetime
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は，静電複写方式による画
像形成装置の転写部に転写紙を導入する転写前ガイドの
改良に係り，特に摩擦性能，帯電性能，磨耗性能のいづ
れにも優れた転写前ガイドを提供するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a pre-transfer guide for introducing a transfer sheet into a transfer section of an image forming apparatus using an electrostatic copying method, and particularly to an improvement in friction performance, charging performance and abrasion performance. It provides a pre-transfer guide.
【０００２】[0002]
【従来の技術】図２は，静電複写方式による画像形成装
置に用いられる感光ドラム含む転写機構の側面図であ
る。図に示すように転写紙Ｐは，レジストロ−ラ対１か
ら転写前ガイド２で案内されて感光ドラム３と転写チャ
ージャ４との間の転写部５を経て図面左側の図示しない
定着部へ送られる。この時転写紙Ｐの剛性が高いと，転
写紙の後端Ｐ′が上記レジストロ−ラ対１を離れた時，
感光ドラム３の搬送力が小さいので転写紙Ｐと転写前ガ
イド２との摩擦により転写紙Ｐがスリップし，像が圧縮
される。その為，従来は上記転写前ガイド２の表面にテ
フロン（イー・アイ・デュポン・ドウ・ヌムール・アン
ド・カンパニーの登録商標）を塗付又は含浸させること
により，転写前ガイドの摩擦係数を低下させているが，
このようなテフロンの含浸等は薄いため転写紙との摩擦
により早期に磨耗し，転写前ガイド２を頻繁に交換しな
ければならないという問題点があった。そのため最近
は，テフロンの含浸や塗付よりも，所定厚さのテフロン
テープ（シート），ルミラー（東レ株式会社の登録商
標）などを転写前ガイド２の表面に張り付ける場合が多
い。2. Description of the Related Art FIG. 2 is a side view of a transfer mechanism including a photosensitive drum used in an image forming apparatus using an electrostatic copying method. As shown in the figure, the transfer paper P is guided from a registration roller pair 1 by a pre-transfer guide 2 and is sent to a fixing unit (not shown) on the left side of the drawing via a transfer unit 5 between the photosensitive drum 3 and the transfer charger 4. . At this time, if the rigidity of the transfer paper P is high, when the rear end P 'of the transfer paper separates from the registration roller pair 1,
Since the transfer force of the photosensitive drum 3 is small, the transfer paper P slips due to friction between the transfer paper P and the pre-transfer guide 2, and the image is compressed. For this reason, conventionally, the surface of the pre-transfer guide 2 is made of Teflon (E.I.
By applying or impregnating (registered trademark of De Company) the friction coefficient of the pre-transfer guide is reduced,
Since such impregnation with Teflon is thin, it is quickly worn due to friction with the transfer paper, and there is a problem that the pre-transfer guide 2 must be replaced frequently. Therefore recently, than with the impregnation and coating of Teflon, a predetermined thickness of the Teflon tape (sheet), registered trademarks of Lumiror chromatography (Toray Industries, Inc.
Mark) is often attached to the surface of the pre-transfer guide 2.
【０００３】[0003]
【発明が解決しようとする課題】しかし，上記のような
テフロン，ルミラーのテープやシートはある程度の厚さ
になると電気的絶縁性が高くなるため，転写紙の通過に
より帯電を生じ，空気中に浮遊するトナーがこの転写前
ガイド２の表面に堆積し，転写紙Ｐが汚れるという不都
合がある。このような転写紙の汚れは，小さいサイズの
転写紙による複数回の転写が行われた時，転写前ガイド
２の転写紙の幅から外れた部分に生じるもので，そのよ
うな汚れの生じた部分に大きいサイズの転写紙Ｐが通過
する時，その転写紙が汚れるものである。従って、本発
明の目的は、上記したような問題点のない摩擦性能，帯
電性能，磨耗性能のいづれにも優れた転写前ガイドを提
供することである。[0008] However, such Teflon, tape or sheet is a certain degree of thickness of Lumiror over as described above
In this case, since the electrical insulation becomes high, there is a problem that the transfer paper is charged due to the passage of the transfer paper, the toner floating in the air is deposited on the surface of the pre-transfer guide 2, and the transfer paper P is contaminated. Such transfer paper stains are generated in a portion of the pre-transfer guide 2 which is out of the width of the transfer paper when the transfer is performed a plurality of times with the transfer paper of a small size. When the transfer paper P of a large size passes through the portion, the transfer paper P becomes dirty. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a pre-transfer guide which is excellent in friction performance, charging performance and abrasion performance without the above-mentioned problems.
【０００４】[0004]
【課題を解決するための手段】上記目的を解決するため
に本発明にかかる転写前ガイドは，画像形成装置の転写
部へ転写紙を案内する転写前ガイドにおいて，該転写前
ガイドの通紙領域に，当該画像形成装置に供給される最
小サイズの転写紙の幅より幾分狭い長さで，耐久性のよ
い低摩擦材料よりなる所定厚さの薄層を形成し，それ以
外の領域を半導性または良導性の部材で構成したことを
特徴とする画像形成装置の転写前ガイドとして構成され
ている。In order to achieve the above object, a pre-transfer guide according to the present invention is a pre-transfer guide that guides a transfer sheet to a transfer section of an image forming apparatus. Then, a thin layer of a predetermined thickness made of a durable low friction material having a length slightly smaller than the width of the minimum size transfer paper supplied to the image forming apparatus is formed, and the other areas are cut in half. The image forming apparatus is configured as a pre-transfer guide formed of a conductive or good conductive member.
【０００５】[0005]
【作用】この発明では転写前ガイドの通紙部に所定厚さ
の低摩擦部材の薄層が形成されているので，転写前ガイ
ドに案内される転写紙と該転写前ガイドとは主として上
記低摩擦部材の部分で接触する。この低摩擦部材の部分
は従来の含浸や塗付とは異なりある程度の層厚があり，
磨耗に対する耐久性がよい。またこの低摩擦部材以外の
部分は半導性または良導性の部材で構成されているの
で，小さいサイズの転写紙が使用された場合でも，この
部分にトナーの堆積等は生じない。また低摩擦部材の部
分は最小サイズの転写紙の幅より狭いので，常に転写紙
に拭かれることになりトナーの堆積等は生じず，転写紙
が汚れるといった不都合も回避される。In the present invention, since a thin layer of a low-friction member having a predetermined thickness is formed in the paper passage portion of the pre-transfer guide, the transfer paper guided by the pre-transfer guide and the pre-transfer guide are mainly composed of the low transfer member. Contact at the friction member. This low friction member has a certain layer thickness unlike conventional impregnation and coating.
Good durability against abrasion. In addition, since the portion other than the low friction member is formed of a semiconductive or good conductive member, even when a small-sized transfer paper is used, toner does not accumulate in this portion. Further, since the portion of the low friction member is narrower than the width of the transfer paper of the minimum size, it is always wiped by the transfer paper, so that the accumulation of toner does not occur and the inconvenience of the transfer paper being soiled can be avoided.
【０００６】[0006]
【実施例】続いて，添付した図面を参照して，本発明を
具体化した実施例について説明し，本発明の理解に供す
る。ここに図１は，本発明の一実施例にかかる転写前ガ
イドの斜視図である。図１に示した転写前ガイド１２
は，全面的にテフロン塗装又は含浸処理がなされたその
通紙部に，当該画像形成装置に供給される最小サイズの
転写紙の幅より幾分狭い幅の低摩擦部材シート１３が貼
り付けられている。この低摩擦部材は，耐久性のよい材
料，例えばテフロン等のフッ素系樹脂，ルミラー等によ
り構成され，１０16-18 Ω／cm程度の電気抵抗のものが
採用される。また上記低摩擦部材の部分以外の部分は，
１０10Ω／cm以下の抵抗率を持つ半導性または良導性の
部材で構成される。例えばテフロンの含浸や，塗付を行
うこともできる。尚，上記低摩擦部材の材質としては，
上記フッ素系樹脂の一例であるテフロン（ＰＴＦＥ），
ルミラー（ＰＥＴフィルム）等も採用される。そしてそ
の形状は上記シート状のものの他，テープ状のもの等，
実質的に所定厚さの薄層を形成しうるものであればよ
い。上記低摩擦部材シート１３の幅は，最小サイズの原
稿の幅よりも例えば８mm程度狭く設定される。また，そ
の厚みは接着剤層等の厚みを含んで例えば０．１mm程度
である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, with reference to the accompanying drawings, embodiments embodying the present invention will be described for the understanding of the present invention. FIG. 1 is a perspective view of a pre-transfer guide according to an embodiment of the present invention. Guide before transfer 12 shown in FIG.
The low friction member sheet 13 having a width somewhat smaller than the width of the minimum size transfer paper supplied to the image forming apparatus is affixed to the paper passing portion which has been entirely subjected to Teflon coating or impregnation processing. I have. The low-friction member, durable good material is constituted for example, a fluorine-based resin such as Teflon, the Lumiror chromatography or the like, are employed those 10 16-18 Ω / cm of about electrical resistance. Parts other than the low friction member are
It is made of a semiconductive or conductive material having a resistivity of 10 10 Ω / cm or less. For example, impregnation with Teflon or coating can be performed. The material of the low friction member is
Teflon (PTFE), which is an example of the above-mentioned fluororesin,
Lumiror chromatography (PET film) and the like may also be employed. And the shape is tape-like in addition to the above-mentioned sheet-like.
What is necessary is just to be able to form a thin layer of a substantially predetermined thickness. The width of the low friction member sheet 13 is set to be, for example, about 8 mm narrower than the width of the minimum size document. The thickness thereof is, for example, about 0.1 mm including the thickness of the adhesive layer and the like.
【０００７】上記低摩擦部材１３は，転写前ガイド１２
の中央部にその両側よりも僅かに突出する薄層として形
成されているが，上記薄層の部分もその両側の部分も低
摩擦材で構成されているので，転写紙との接触にによる
摩擦力は問題とならない。この低摩擦部材の部分は上記
のように例えば０．１mmに薄層化しており，従来のテフ
ロン等の含浸とは異なり，ある程度の層厚があり，磨耗
に対する耐久性がよい。またこの低摩擦部材以外の部分
は半導性または良導性の部材で構成されているので，小
さいサイズの転写紙が使用された場合でも，この部分に
トナーの堆積等は生じず，転写紙が汚れるといった不都
合も回避される。[0007] The low friction member 13 is used for the pre-transfer guide 12.
Is formed as a thin layer slightly protruding from both sides of the center of the paper. However, both the thin layer and both sides are made of low-friction material. Power doesn't matter. The portion of the low friction member is thinned to, for example, 0.1 mm as described above. Unlike the conventional impregnation with Teflon or the like, the portion has a certain layer thickness and has good durability against abrasion. Further, since the portion other than the low friction member is made of a semiconductive or good conductive member, even when a small-sized transfer paper is used, no toner is deposited on this portion, and the transfer paper is not formed. Inconveniences such as soiling are also avoided.
【０００８】[0008]
【発明の効果】本発明では，転写前ガイドの中央に設け
た低摩擦部材を介して転写前ガイドが転写紙と接触する
ので，転写紙に対する摩擦力が少なく，画像の圧縮とい
った問題は生じない。また上記低摩擦部材は当該画像形
成装置に供給される最小サイズの転写紙の幅より短く形
成されているので，常に転写紙でその表面が拭かれるこ
とになり，トナー等の付着がないので，転写紙を汚すと
言った不都合がない。さらに上記低摩擦部材は所定厚さ
の薄層により形成されているので，磨耗寿命も長く，度
々交換する手間が必要ない。さらにまた，従来のテフロ
ン塗装された転写前ガイドでは，テフロンが摩耗した
際，ガイド全体を交換しなければならなかったが，本考
案では，シート部材を接着あるいは交換するだけでよい
ので，保守性が向上する。According to the present invention, since the pre-transfer guide comes into contact with the transfer paper via the low friction member provided at the center of the pre-transfer guide, the frictional force against the transfer paper is small and the problem of image compression does not occur. . Further, since the low friction member is formed to be shorter than the width of the minimum size transfer paper supplied to the image forming apparatus, the surface thereof is always wiped with the transfer paper, and there is no adhesion of toner or the like. There is no inconvenience of dirtying the transfer paper. Further, since the low-friction member is formed of a thin layer having a predetermined thickness, the wear life is long and there is no need for frequent replacement. Furthermore, in the conventional Teflon-coated pre-transfer guide, when the Teflon is worn, the entire guide had to be replaced. However, in the present invention, it is only necessary to glue or replace the sheet member. Is improved.
【図面の簡単な説明】[Brief description of the drawings]
【図１】 本発明の一実施例にかかる転写前ガイドの斜
視図。FIG. 1 is a perspective view of a pre-transfer guide according to an embodiment of the present invention.
【図２】 本発明の背景をなす画像形成装置の転写機構
部分の側面図。FIG. 2 is a side view of a transfer mechanism portion of the image forming apparatus which forms the background of the present invention.
１２…転写前ガイド １３…低摩擦部材 １…レジストロ−ラ対 ３…感光ドラム ４…転写チャージャ ５…転写部 DESCRIPTION OF SYMBOLS 12 ... Pre-transfer guide 13 ... Low friction member 1 ... Register roller pair 3 ... Photosensitive drum 4 ... Transfer charger 5 ... Transfer part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 石田 英樹 大阪府大阪市中央区玉造１丁目２番28号 三田工業株式会社内 (72)発明者 坂上 英和 大阪府大阪市中央区玉造１丁目２番28号 三田工業株式会社内 (56)参考文献 特開 昭62−141585（ＪＰ，Ａ) 特開 昭60−43671（ＪＰ，Ａ) 実開 平３−63163（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) G03G 15/16 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideki Ishida 1-2-28 Tamazuki, Chuo-ku, Osaka, Osaka Inside Mita Kogyo Co., Ltd. (72) Inventor Hidekazu Sakagami 1-2-2, Tamazuki, Chuo-ku, Osaka, Osaka No. 28 Mita Kogyo Co., Ltd. (56) References JP-A-62-141585 (JP, A) JP-A-60-43671 (JP, A) JP-A-3-63163 (JP, U) (58) Investigation Field (Int.Cl. 7 , DB name) G03G 15/16
Claims (4)
る転写前ガイドにおいて，該転写前ガイドの通紙領域
に，当該画像形成装置に供給される最小サイズの転写紙
の幅より幾分狭い長さで，耐久性のよい低摩擦材料より
なる所定厚さの薄層を形成し，それ以外の領域を半導性
または良導性の部材で構成したことを特徴とする画像形
成装置の転写前ガイド。In a pre-transfer guide for guiding a transfer sheet to a transfer section of an image forming apparatus, a width of a transfer sheet of a minimum size supplied to the image forming apparatus is slightly increased in a sheet passing area of the pre-transfer guide. An image forming apparatus characterized by forming a thin layer of a predetermined length having a narrow length and made of a low-friction material having good durability, and the other region being constituted by a semiconductive or good conductive member. Guide before transfer.
いはテープ状の薄層により構成されている請求項１記載
の転写前ガイド。2. The pre-transfer guide according to claim 1, wherein the thin layer made of the low friction material is formed of a sheet or a tape-shaped thin layer.
求項１または２記載の転写前ガイド。3. The pre-transfer guide according to claim 1, wherein the low friction material is a fluororesin.
求項１または２記載の転写前ガイド。4. The pre-transfer guide according to claim 1, wherein the low friction material is polyethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06096161A JP3073649B2 (en) | 1994-05-10 | 1994-05-10 | Guide before transfer of image forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06096161A JP3073649B2 (en) | 1994-05-10 | 1994-05-10 | Guide before transfer of image forming apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07302004A JPH07302004A (en) | 1995-11-14 |
| JP3073649B2 true JP3073649B2 (en) | 2000-08-07 |
Family
ID=14157630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06096161A Expired - Lifetime JP3073649B2 (en) | 1994-05-10 | 1994-05-10 | Guide before transfer of image forming apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3073649B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002244446A (en) * | 2001-02-15 | 2002-08-30 | Canon Inc | Guide before transfer and image forming device having the same |
| JP4702438B2 (en) * | 2008-11-26 | 2011-06-15 | ブラザー工業株式会社 | Image forming apparatus |
| JP5448991B2 (en) * | 2010-04-14 | 2014-03-19 | キヤノン株式会社 | Image forming apparatus |
-
1994
- 1994-05-10 JP JP06096161A patent/JP3073649B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07302004A (en) | 1995-11-14 |
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