JPH0417948Y2 - - Google Patents
Info
- Publication number
- JPH0417948Y2 JPH0417948Y2 JP1984111070U JP11107084U JPH0417948Y2 JP H0417948 Y2 JPH0417948 Y2 JP H0417948Y2 JP 1984111070 U JP1984111070 U JP 1984111070U JP 11107084 U JP11107084 U JP 11107084U JP H0417948 Y2 JPH0417948 Y2 JP H0417948Y2
- Authority
- JP
- Japan
- Prior art keywords
- guide plate
- photoreceptor drum
- transfer
- transfer paper
- conveyance 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
Links
- 108091008695 photoreceptors Proteins 0.000 claims description 31
- 230000007246 mechanism Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は複写機において複写画像を形成すべき
紙（以下転写紙と呼ぶ）を感光体ドラム近傍に設
けられた転写行程に進入せしめる際に使用する搬
送ガイド板に関する。[Detailed description of the invention] (Field of industrial application) This invention is used in a copying machine when paper on which a copy image is to be formed (hereinafter referred to as transfer paper) enters a transfer process provided near the photoreceptor drum. Regarding the conveyance guide plate to be used.
（従来技術）
一般の複写機においては、画像露光により感光
体ドラム表面に形成された静電潜像を所定の現像
機構により現像してトナー像化し、転写行程にお
いて該トナー像を帯電等の手段によつて所定の用
紙に転写せしめる。(Prior art) In a general copying machine, an electrostatic latent image formed on the surface of a photoreceptor drum by image exposure is developed into a toner image by a predetermined developing mechanism, and in the transfer process, the toner image is charged by means such as charging. The image is transferred onto a designated sheet of paper.
この転写に際しては、原稿と転写画像とが一致
する様に、転写紙を感光体ドラムの回転とタイミ
ングを合わせて且つ該ドラムと密着する様に転写
行程に進入せしめることが必要である。 During this transfer, it is necessary to synchronize the timing with the rotation of the photosensitive drum and bring the transfer paper into close contact with the drum so that the original and the transferred image match.
このために従来は、転写行程前面にガイド板を
設け、該ガイド板の先端を転写行程領域直前の感
光体ドラム表面に近接せしめて、これにより転写
紙の進入を行なつている。即ち、転写紙先端が感
光体ドラム表面と衝突した際に、そのシヨツクで
転写紙の正確な搬送が阻害されるの防止し、且
つ、感光体ドラムとの接触を補助するためであ
る。 For this purpose, conventionally, a guide plate is provided in front of the transfer process, and the tip of the guide plate is brought close to the surface of the photosensitive drum immediately before the transfer process area, thereby allowing the transfer paper to enter. That is, when the leading edge of the transfer paper collides with the surface of the photoreceptor drum, the shock prevents the accurate conveyance of the transfer paper from being obstructed, and the purpose is to assist contact with the photoreceptor drum.
（考案が解決しようとする課題）
然しながら、この従来のガイド板はそれ自体硬
質部材から成つており、しかも実質上平面板であ
るために、その先端部分が転写紙と当接すること
により紙粉等を発生し、且つ大きな摺擦音を発生
するという不都合を生じ易い。更に感光体ドラム
と転写紙とを密着せしめるために、感光体ドラム
表面に比較的大きな角度で該ガイド板を設けた場
合には、かかる不都合は一層顕著なものとなる。(Problem to be solved by the invention) However, since this conventional guide plate itself is made of a hard member and is substantially a flat plate, when its tip comes into contact with the transfer paper, paper dust etc. This tends to cause the inconvenience of generating a large amount of rubbing noise. Furthermore, when the guide plate is provided at a relatively large angle on the surface of the photoreceptor drum in order to bring the photoreceptor drum and the transfer paper into close contact, this problem becomes even more noticeable.
即ち本考案の目的は、転写ずれによる画像品質
の劣化を防止し、画像品質の向上を図ることが可
能な搬送ガイド板を提供することを目的とする。 That is, an object of the present invention is to provide a conveyance guide plate that can prevent deterioration of image quality due to transfer misalignment and improve image quality.
本考案の他の目的は、紙粉や摺擦音の発生なし
に転写紙を転写行程に進入させることが可能な搬
送ガイド板を提供することにある。 Another object of the present invention is to provide a conveyance guide plate that allows transfer paper to enter the transfer process without generating paper dust or rubbing noise.
本考案の他の目的は、転写紙と感光体ドラムと
の密着性を維持しつつ、該転写紙を転写行程に進
入させることが可能な搬送ガイド板を提供するに
ある。 Another object of the present invention is to provide a conveyance guide plate that allows the transfer paper to enter the transfer process while maintaining the adhesion between the transfer paper and the photosensitive drum.
（課題を解決するための手段）
本考案によれば、回転感光体ドラム近傍に配置
された転写用帯電機構の前部域に位置する転写紙
搬送ガイド板であつて、該搬送ガイド板の先端部
は絶縁性弾性部材から成ると共に感光体ドラムに
近接してから遠ざかるように屈曲しており、且つ
該屈曲部は感光体ドラムの転写域接面よりも上方
側で且つ感光体ドラムの表面近傍に位置するよう
に配置されていることを特徴とする転写紙搬送ガ
イド板が提供される。(Means for Solving the Problems) According to the present invention, there is provided a transfer paper conveyance guide plate located in a front region of a transfer charging mechanism disposed near a rotating photoreceptor drum, the tip of the conveyance guide plate. The portion is made of an insulating elastic member and is bent so as to approach the photoreceptor drum and then move away from the photoreceptor drum, and the bent portion is located above the transfer area contacting surface of the photoreceptor drum and near the surface of the photoreceptor drum. A transfer paper conveyance guide plate is provided, characterized in that the transfer paper conveyance guide plate is arranged so as to be located at.
（実施例）
以下本考案を添付図面に示す具体例に基づいて
詳細に説明する。(Example) The present invention will be described in detail below based on specific examples shown in the accompanying drawings.
本考案の搬送ガイド板を複写機における他の機
構とともに示す第１図において、感光体ドラム９
に対向して、転写チヤージヤー２１が設けられて
おり、この両者の間に転写領域５が形成されてい
る。そして、この転写領域５における転写紙３の
搬送方向前部域には全体として２２で示す転写紙
搬送ガイド機構が設けられている。このガイド機
構２２は、転写領域５の前部域における感光体ド
ラム９の接面２３に対して一定の角度αで転写紙
３が感光体ドラム９表面に進入するように設けら
れたガイド板２５，２５′及びこの一方のガイド
板２５に取り付けられた搬送ガイド板２９とから
構成されているものである。転写紙３は、所定の
搬送駆動機構（図示せず）の動作に応じて感光体
ドラム９の回転にタイミングを合わせて且つ同期
して転写領域５に進入する。 In FIG. 1, which shows the conveyance guide plate of the present invention together with other mechanisms in a copying machine, the photosensitive drum 9
A transfer charger 21 is provided opposite to the transfer charger 21, and a transfer area 5 is formed between the two. A transfer paper conveyance guide mechanism generally indicated by 22 is provided in the front region of the transfer area 5 in the conveyance direction of the transfer paper 3. This guide mechanism 22 includes a guide plate 25 provided so that the transfer paper 3 enters the surface of the photoreceptor drum 9 at a constant angle α with respect to the contact surface 23 of the photoreceptor drum 9 in the front region of the transfer area 5. , 25' and a conveyance guide plate 29 attached to one of the guide plates 25. The transfer paper 3 enters the transfer area 5 in synchronization with the rotation of the photosensitive drum 9 according to the operation of a predetermined transport drive mechanism (not shown).
本考案において重要な特徴は、この搬送ガイド
板２９の感光体ドラム９の側の先端を下方に折り
曲げて屈曲部２７を形成せしめることにある。即
ち従来使用されている搬送ガイド板は平板形状で
あるため、その先端部分が鋭利なエツジ状となつ
ており、該先端が転写紙裏面と当接した場合に摩
擦により紙粉等が発生し、且つ大きな摺擦音も併
せて発生するという不都合を招くのである。 An important feature of the present invention is that the tip of the conveyance guide plate 29 on the side of the photoreceptor drum 9 is bent downward to form a bent portion 27. In other words, since the conveyance guide plate conventionally used has a flat plate shape, its tip has a sharp edge, and when the tip comes into contact with the back side of the transfer paper, paper dust etc. are generated due to friction. Moreover, this also causes the inconvenience of generating a large rubbing noise.
而して本考案によれば、搬送ガイド板２９の先
端部分を折り曲げて屈曲部２７を形成したことに
より、該屈曲部２７と転写紙３との接触に際して
もその摩擦は極めて小さく、従つて紙粉や摺擦音
の発生が有効に防止される。 According to the present invention, since the bent portion 27 is formed by bending the tip end of the conveyance guide plate 29, even when the bent portion 27 comes into contact with the transfer paper 3, the friction is extremely small. Generation of powder and rubbing noise is effectively prevented.
また本考案においては、搬送ガイド板２９の先
端に折り曲げ部を形成させたことに関連して、ガ
イド板２９はそれ自体腰の強いものになるという
利点も有している。これにより搬送ガイド板２９
の屈曲部２７を、感光体ドラム９の接面２３に対
して比較的大きな角度αをもつて位置せしめるこ
とが可能となるのである。 Furthermore, the present invention has an advantage in that the guide plate 29 itself becomes strong due to the bending portion formed at the tip of the conveyance guide plate 29. As a result, the conveyance guide plate 29
This makes it possible to position the bent portion 27 at a relatively large angle α with respect to the contact surface 23 of the photoreceptor drum 9.
即ち、転写紙３を感光体ドラム９の表面に密着
性を維持しつつ転写領域５に進入せしめるために
は、上記角度αを比較的大とすることが好ましい
のであるが、この角度αを大とするにつれて転写
紙３と感光体ドラム９とが当接した際に生ずる衝
撃は大となる。従つて従来の平板状のガイド板を
使用した場合には、角度αを大とすると上記衝撃
によつてガイド板自体にブレを生じるため、確実
且つ正確な転写紙３の搬送が阻害され易く、結果
として角度α（以下進入角度と呼ぶことがある）
は比較的小さく設けねばならないのである。即ち
転写紙３と感光体ドラム９との間に十分な密着性
が維持され難くなる。 That is, in order to allow the transfer paper 3 to enter the transfer area 5 while maintaining adhesion to the surface of the photoreceptor drum 9, it is preferable to make the angle α relatively large. As this increases, the impact generated when the transfer paper 3 and the photosensitive drum 9 come into contact becomes larger. Therefore, when a conventional flat guide plate is used, if the angle α is large, the guide plate itself will shake due to the above-mentioned impact, which tends to hinder reliable and accurate conveyance of the transfer paper 3. As a result, the angle α (hereinafter sometimes referred to as the approach angle)
must be relatively small. That is, it becomes difficult to maintain sufficient adhesion between the transfer paper 3 and the photosensitive drum 9.
而して本考案の搬送ガイド板２９は前述した如
く腰の強いものとなつているため、進入角度αを
大きくすることができ、これにより大きな反撥力
を転写紙３に与え得るのである。かくして本考案
によれば転写紙３を感光体ドラム９の表面に十分
な密着性を維持しつつ、転写領域５に進入せしめ
ることが可能となるものである。 Since the conveyance guide plate 29 of the present invention is strong as described above, the approach angle α can be increased, and thereby a large repulsive force can be applied to the transfer paper 3. Thus, according to the present invention, it is possible to cause the transfer paper 3 to enter the transfer area 5 while maintaining sufficient adhesion to the surface of the photoreceptor drum 9.
因みに本考案の搬送ガイド板２９は、約20乃至
50度の範囲の進入角度で使用可能である。 Incidentally, the conveyance guide plate 29 of the present invention has a thickness of about 20 to
It can be used with approach angles in the range of 50 degrees.
本考案の搬送ガイド板２９は、その一作用とし
て転写紙３の感光体ドラム９に対する密着力を発
生させるためのものであるため、感光体ドラム９
の転写域接面２３よりも上方側で且つ感光体ドラ
ム９の表面近傍に屈曲部２７が来るように取り付
けるのが好ましい。これは、この位置においてよ
り強い密着力を発生させることができるためであ
る。 One function of the conveyance guide plate 29 of the present invention is to generate adhesion force of the transfer paper 3 to the photoreceptor drum 9.
It is preferable to attach the photoreceptor drum 9 so that the bent portion 27 is located above the transfer area contact surface 23 and near the surface of the photoreceptor drum 9 . This is because a stronger adhesion force can be generated at this position.
また特開昭58−25678号公報には、先端に屈曲
部が形成された案内板が開示されているが、この
案内板は金属等の剛性部材から成つている点にお
いて本考案と異なるものである。即ち、先端に屈
曲部が形成されていたとしても、それが剛性部材
から成る場合には、感光体ドラム表面と転写紙と
の密着性を有効に保持することが困難となり、画
像ブレを生ずるという不都合を回避し得ないので
ある。例えば、転写紙の供給速度＝感光体ドラム
の回転速度（線速度）＝転写後の転写紙の搬送速
度という関係が成立する場合には、上記の密着性
は保持されるものの、上記の関係が成立しない場
合には、供給される転写紙に張力がかかり、該転
写紙がつつぱつた状態となるために、転写紙と感
光体ドラムとの接触により振動が発生し、転写紙
上に形成される転写画像にブレを生ずるのであ
る。 Furthermore, JP-A-58-25678 discloses a guide plate having a bent portion at its tip, but this guide plate is different from the present invention in that it is made of a rigid member such as metal. be. That is, even if a bent portion is formed at the tip, if it is made of a rigid member, it will be difficult to effectively maintain the adhesion between the photosensitive drum surface and the transfer paper, resulting in image blurring. The inconvenience cannot be avoided. For example, if the following relationship holds true: supply speed of transfer paper = rotational speed (linear velocity) of photoreceptor drum = transport speed of transfer paper after transfer, the above-mentioned adhesion is maintained, but the above-mentioned relationship is If this is not the case, tension will be applied to the supplied transfer paper and the transfer paper will become loose, causing vibrations due to contact between the transfer paper and the photoreceptor drum, which will form on the transfer paper. This causes blur in the transferred image.
これに対して本考案に従つて搬送用ガイド板の
先端部が弾性部材で形成されている場合には、こ
の弾性部材がクツシヨンとして作用し、しかも該
弾性部材は屈曲されて腰の強いものとなつている
ために、前述した速度関係が成立しない場合にお
いても、前記振動が吸収され且つ転写紙に大きな
反撥力が加えられるので、転写紙と感光体ドラム
表面との密着性が有効に保持され、画像のブレが
有効に回避されるのである。 On the other hand, when the tip of the conveyance guide plate is formed of an elastic member according to the present invention, this elastic member acts as a cushion, and moreover, the elastic member is bent and has a strong stiffness. Because of this, even if the speed relationship described above does not hold, the vibration is absorbed and a large repulsive force is applied to the transfer paper, so that the adhesion between the transfer paper and the surface of the photoreceptor drum is effectively maintained. , image blurring can be effectively avoided.
本考案における搬送ガイド板の材質としては絶
縁性弾性部材であれば任意のものが使用できる。
ここで絶縁性が要求されるのは、転写チヤージヤ
ー２１の近傍に位置するため、搬送ガイド板への
チヤージヤー２１からのリークを防止するため
の、転写のため転写紙に印加した電荷のリークを
防止するため、さらに搬送ガイド板を感光体ドラ
ム表面に近接させるために、導電性であれば感光
体ドラム表面上の静電潜像との間で電荷の放電が
発生し、画像への影響が発生するのを防止するた
めである。 As the material of the conveyance guide plate in the present invention, any material can be used as long as it is an insulating elastic material.
Insulation is required here because it is located near the transfer charger 21, so in order to prevent leakage from the charger 21 to the conveyance guide plate, it is necessary to prevent leakage of the electric charge applied to the transfer paper for transfer. Therefore, in order to bring the transport guide plate close to the photoreceptor drum surface, if it is conductive, electric charge will be discharged between it and the electrostatic latent image on the photoreceptor drum surface, which will affect the image. This is to prevent this from happening.
好適な素材としては、例えば、ポリエチレン樹
脂、ポリプロピレン樹脂、テフロン或いはフツ素
系の樹脂、或いは、弾性を有する金属シート表面
を絶縁処理したようなものを使用することができ
る。 Suitable materials include, for example, polyethylene resin, polypropylene resin, Teflon or fluorine resin, or materials obtained by insulating the surface of an elastic metal sheet.
（考案の効果）
かかる本考案の搬送ガイド板によれば、紙粉や
摺擦音の発生が有効に防止され且つ転写紙の感光
体ドラムへの密着性を維持しつつ、転写紙を転写
領域へ進入せしめることが可能となり、これによ
り画像品質の向上とトナーの転写効率が増大せし
められるという顕著な利点が達成されるものであ
る。(Effect of the invention) According to the conveyance guide plate of the present invention, the generation of paper dust and rubbing noise can be effectively prevented, and the transfer paper can be moved to the transfer area while maintaining the adhesion of the transfer paper to the photoreceptor drum. The significant advantages of improved image quality and increased toner transfer efficiency are achieved.
第１図は、本考案の搬送ガイド板及びその使用
状態を示す図である。
３は転写紙、５は転写領域、９は感光体ドラ
ム、２７は屈曲部、２９は搬送ガイド板を示す。
FIG. 1 is a diagram showing the conveyance guide plate of the present invention and its usage condition. 3 is a transfer paper, 5 is a transfer area, 9 is a photosensitive drum, 27 is a bent portion, and 29 is a conveyance guide plate.
Claims (1)
機構の前部域に位置する転写紙搬送ガイド板であ
つて、 該搬送ガイド板の先端部は絶縁性弾性部材から
成ると共に感光体ドラムに近接してから遠ざかる
ように屈曲しており、且つ該屈曲部は感光体ドラ
ムの転写域接面よりも上方側で且つ感光体ドラム
の表面近傍に位置するように配置されていること
を特徴とする転写紙搬送ガイド板。[Scope of Claim for Utility Model Registration] A transfer paper conveyance guide plate located in the front area of a transfer charging mechanism disposed near the rotating photoreceptor drum, wherein the tip of the conveyance guide plate is made of an insulating elastic member. and is bent so as to approach the photoreceptor drum and then move away from the photoreceptor drum, and the bent portion is located above the transfer area contacting surface of the photoreceptor drum and near the surface of the photoreceptor drum. A transfer paper conveyance guide plate characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11107084U JPS6127153U (en) | 1984-07-24 | 1984-07-24 | Transfer guide plate for copying machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11107084U JPS6127153U (en) | 1984-07-24 | 1984-07-24 | Transfer guide plate for copying machines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6127153U JPS6127153U (en) | 1986-02-18 |
| JPH0417948Y2 true JPH0417948Y2 (en) | 1992-04-22 |
Family
ID=30670181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11107084U Granted JPS6127153U (en) | 1984-07-24 | 1984-07-24 | Transfer guide plate for copying machines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6127153U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4492641B2 (en) * | 2007-05-30 | 2010-06-30 | ブラザー工業株式会社 | Process cartridge and image forming apparatus |
| JP6602069B2 (en) * | 2015-06-19 | 2019-11-06 | キヤノン株式会社 | Image forming apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5616158B2 (en) * | 1979-08-13 | 1981-04-14 | ||
| JPS5825678A (en) * | 1981-08-10 | 1983-02-15 | Konishiroku Photo Ind Co Ltd | Recording paper guiding device of copying machine or the like |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6343473Y2 (en) * | 1979-07-16 | 1988-11-14 |
-
1984
- 1984-07-24 JP JP11107084U patent/JPS6127153U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5616158B2 (en) * | 1979-08-13 | 1981-04-14 | ||
| JPS5825678A (en) * | 1981-08-10 | 1983-02-15 | Konishiroku Photo Ind Co Ltd | Recording paper guiding device of copying machine or the like |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6127153U (en) | 1986-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4380385A (en) | Method of transferring toner powder image by pressure and apparatus therefor | |
| KR960004510Y1 (en) | Magnetic roller installing apparatus | |
| JPH0417948Y2 (en) | ||
| CA2183907C (en) | Force applying blade device exhibiting a reduced creep rate | |
| US6438338B1 (en) | Extended life recycleable silencer assembly | |
| JPS6235104Y2 (en) | ||
| JPS6118648A (en) | Paddle wheel feeder | |
| JPS62100781A (en) | Cleaning blade | |
| JPS6320997Y2 (en) | ||
| JPH0546023Y2 (en) | ||
| JPH06337578A (en) | Developing device | |
| JPH11311899A (en) | Image forming device | |
| JPH0430597Y2 (en) | ||
| JPH04363Y2 (en) | ||
| JP2535025Y2 (en) | Recording paper transport device | |
| JPS5916937Y2 (en) | Magnetic brush developing device in electronic copying machine or electrostatic recording device | |
| JPH08328379A (en) | One component developing device | |
| JPH08328397A (en) | Image forming device | |
| JPS61151680A (en) | Cleaning device | |
| JPS6039873Y2 (en) | Copy machine doctor blade cleaning device | |
| JP2965666B2 (en) | Image forming device | |
| JP3548730B2 (en) | Image forming device | |
| KR19990002141U (en) | Developing machine for electrophotographic printing press | |
| JPH1195546A (en) | Developer layer thickness regulating member and developing device using the same | |
| JP2000029360A (en) | Cleaner |