JPS6195956A - Electronic photorecorder - Google Patents
Electronic photorecorderInfo
- Publication number
- JPS6195956A JPS6195956A JP59219733A JP21973384A JPS6195956A JP S6195956 A JPS6195956 A JP S6195956A JP 59219733 A JP59219733 A JP 59219733A JP 21973384 A JP21973384 A JP 21973384A JP S6195956 A JPS6195956 A JP S6195956A
- Authority
- JP
- Japan
- Prior art keywords
- lens array
- light source
- drum
- photosensitive element
- image
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
- G03G15/32—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head
- G03G15/326—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head by application of light, e.g. using a LED array
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
- G03G15/04036—Details of illuminating systems, e.g. lamps, reflectors
- G03G15/04045—Details of illuminating systems, e.g. lamps, reflectors for exposing image information provided otherwise than by directly projecting the original image onto the photoconductive recording material, e.g. digital copiers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Dot-Matrix Printers And Others (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、発光ダイオード等の発光素子を一次元的に配
列したアレイ状光源からの光を集束性光伝達素子を一次
元的に配列したレンズアレイで記録を行なう電子写真記
録装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a lens array in which light transmitting elements are arranged in one dimension to converge light from an array light source in which light emitting elements such as light emitting diodes are arranged in one dimension. This invention relates to an electrophotographic recording device that performs recording.
従来の技術
従来、アレイ状光源とレンズアレイを用いた電子写真記
録装置は、例えば、特開昭５２−３４７３９号公報に見
られるように、第２図のような構造になっていた。すな
わち、感光体ドラム１．０外周面近傍にアレイ状光源２
とレンズアレイ３をその走査方向が感光体ドラム１の軸
方向に平行であるとともに、レンズアレイ３の焦点位置
にアレイ状光源２と感光体ドラム１の表面を相対向する
よう配置し、本体に固定されている。帯電器４で表面が
均一に帯電された感光体ドラム１は、アレイ状光源２に
より所望のパターン像が露光され、現像器５でトナーが
付着され、次に転写帯電器６で記録紙７にトナー像が転
写され、記録紙７は定着器８で加熱定着されて、装置外
部に排出されるようになっている。トナー像が転写され
た感光体ドラム１はクリーニング部９で表面がクリーニ
ングされ、除電部１０で除電後、再び、初めの状態に戻
る。2. Description of the Related Art Conventionally, an electrophotographic recording apparatus using an arrayed light source and a lens array has a structure as shown in FIG. 2, as shown in, for example, Japanese Patent Laid-Open No. 52-34739. That is, an array light source 2 is provided near the outer peripheral surface of the photoreceptor drum 1.0.
A lens array 3 is arranged so that its scanning direction is parallel to the axial direction of the photoreceptor drum 1, and the array light source 2 and the surface of the photoreceptor drum 1 face each other at the focal position of the lens array 3. Fixed. The photosensitive drum 1, whose surface is uniformly charged by the charger 4, is exposed to a desired pattern image by the array light source 2, toner is attached to it by the developer 5, and then onto a recording paper 7 by the transfer charger 6. The toner image is transferred, the recording paper 7 is heated and fixed by a fixing device 8, and then discharged to the outside of the apparatus. The surface of the photosensitive drum 1 to which the toner image has been transferred is cleaned by a cleaning section 9, and after electricity is removed by a static eliminating section 10, the photosensitive drum 1 returns to its initial state.
発明が解決しようとする問題点
しかし、このような構造のものでは、一般にレンズアレ
イ３の焦点距離が短いことから、プレイ状光源２とレン
ズアレイ３及び感光体ドラム１の表面との位置精度が重
要で、特に、感光体ドラム１の偏芯による光路長の変化
は記録画像の解像度に悪影響を与えるものである。Problems to be Solved by the Invention However, in such a structure, since the focal length of the lens array 3 is generally short, the positional accuracy of the play-shaped light source 2, the lens array 3, and the surface of the photoreceptor drum 1 is poor. This is important, and in particular, changes in the optical path length due to eccentricity of the photosensitive drum 1 adversely affect the resolution of recorded images.
また、構成する部品の加工精度を向上したり組立時に調
整する方法も、加工コストが高く高度な熟練技術を要す
る等の問題点があった。Furthermore, methods for improving the machining accuracy of component parts and adjusting them during assembly also have problems such as high processing costs and the need for highly skilled techniques.
そこで、本発明は、感光体ドラムの偏芯に係わりなく、
アレイ状光源から感光体ドラム表面までの距離を一定に
保つようにするものである。Therefore, the present invention has the following advantages: Regardless of the eccentricity of the photoreceptor drum,
The distance from the array light source to the surface of the photoreceptor drum is kept constant.
問題点を解決するだめの手段
そして上記問題点を解決する本発明の技術的な手段は、
アレイ状光源とレンズアレイを一体的に保持するととも
に、規制ローラを設け、規制ローラと感光体ドラム表面
を当接し、ドラム表面に沿ってアレイ状光源とレンズア
レイを可動可能に設けるよう構成したものである。Means for solving the problems and technical means of the present invention for solving the above problems are as follows:
An array light source and a lens array are integrally held, a regulating roller is provided, the regulating roller is in contact with the surface of a photoreceptor drum, and the array light source and lens array are movably provided along the drum surface. It is.
作 用 この技術的手段による作用は、次のようになる。For production The effect of this technical means is as follows.
すなわち、感光体ドラムが偏芯したり、感光体ドラムの
交換により直径が異なる場合でも、感光体ドラム表面の
変化に対応して、アレイ状光源とレンズアレイが可動し
、常にレンズアレイの焦点位置にドラム表面が位置する
ため、画像のピントずれがなく、高品位な画像を得るこ
とができる。In other words, even if the photoreceptor drum is eccentric or the diameter changes due to replacement of the photoreceptor drum, the array light source and lens array move in response to changes in the photoreceptor drum surface, and the focal position of the lens array is always maintained. Since the drum surface is located at the top of the drum, the image will not be out of focus and a high-quality image can be obtained.
実施例
以下に本発明の一実施例を添付図面に基づいて説明する
。全体構成については、第２図と同一であるので省略す
る。EXAMPLE An example of the present invention will be described below with reference to the accompanying drawings. The overall configuration is the same as that in FIG. 2, so a description thereof will be omitted.
第１図に、本発明のアレイ状光源２とレンズアレイ３か
ら成る露光光学部の詳細を示す。FIG. 1 shows details of an exposure optical section comprising an array light source 2 and a lens array 3 according to the present invention.
第１図において、２はアレイ状光源で発光ダイオード等
の発光素子を一次元的に配列したもので、３は自己集束
型レンズアレイのような集束性光伝達素子を一次元的に
配列したレンズアレイで、保持具９，１０により、アレ
イ状光源２の各発光素子がレンズアレイ３の焦点位置に
位置するよう取付られている。In Figure 1, 2 is an array light source in which light emitting elements such as light emitting diodes are arranged one-dimensionally, and 3 is a lens in which convergent light transmission elements such as a self-focusing lens array are arranged one-dimensionally. In the array, each light emitting element of the array light source 2 is mounted by holders 9 and 10 so as to be located at the focal position of the lens array 3.
１１．１２は案内具で、保持具９，１ｏにそれぞれ設け
られた凸部９ａ、１０ａが嵌合する溝部１１ａ、１２ａ
を有し、保持具９，１０を感光体ドラム１の軸心方向に
摺動自在に保持するとともに、アレイ状光源２の走査方
向が感光体ドラム１の軸方向に平行になるよう本体側板
１３ａ、１３ｂに固定されている。Reference numeral 11.12 denotes a guide tool, which has grooves 11a and 12a into which the convex parts 9a and 10a provided on the holders 9 and 1o fit, respectively.
The body side plate 13a holds the holders 9 and 10 so as to be slidable in the axial direction of the photoreceptor drum 1, and so that the scanning direction of the array light source 2 is parallel to the axial direction of the photoreceptor drum 1. , 13b.
１４は引張ばねで、保持具９，１０と本体１３ａ。14 is a tension spring, which includes holders 9 and 10 and a main body 13a.
１３ｂにそれぞれ固定されたピン１６．１６に張架され
、保持具９，１０を感光体ドラム１の軸心方向に向かつ
て付勢している。The holding members 9 and 10 are suspended by pins 16 and 16 fixed to the respective members 13b, and urge the holders 9 and 10 toward the axial center of the photosensitive drum 1.
１７は規制ローラで保持具９，１ｏに固定された軸１８
に回転可能に支持され、引張ばね１４により保持具９，
１０が感光体ドラム１の軸心に向かつて付勢された状態
で、感光体ドラム１の両端近傍に当接し、感光体ドラム
１の回転に伴なって従動回転する。！た規制ローラ１７
は、感光体ドラム１と当接状態においてレンズアレイ３
の焦点位置に感光体ドラム１表面が位置するよう設けら
れている。感光体ドラム１はその支軸が本体側板１３ａ
、１３１）に回転支持され、駆動モータ（図示せず）に
より、Ａ矢印方向に一定速度で回転される。次に、この
一実施例の構成における動作を説明する。17 is a shaft 18 fixed to the holder 9, 1o with a regulating roller.
The holder 9 is rotatably supported by a tension spring 14.
10 is biased toward the axis of the photoreceptor drum 1, contacts near both ends of the photoreceptor drum 1, and rotates as the photoreceptor drum 1 rotates. ! regulation roller 17
The lens array 3 is in contact with the photoreceptor drum 1.
The surface of the photosensitive drum 1 is located at the focal point of the photosensitive drum 1. The support shaft of the photosensitive drum 1 is the main body side plate 13a.
, 131), and is rotated at a constant speed in the direction of arrow A by a drive motor (not shown). Next, the operation of the configuration of this embodiment will be explained.
感光体ドラム１は駆動モータによって、Ａ矢印方向に回
転され、まず帯電器器４（第２図）により表面が均一に
帯電される。次に、プレイ状光源２の各光学素子が所望
の画像に対して点灯され、レンズアレイ３によって、感
光体ドラム１の表面に結像露光される。このとき、感光
体ドラム１．の外周に当接した規制ローラ１７によって
、アレイ状光源２とレンズアレイ３は、感光体ドラム１
の外周面に沿って追従して、常にレンズアレイ３と感光
体ドラム１表面の距離を一定に保ち、画像のピントずれ
がなく露光される。感光体ドラム１の露光された部分は
電荷がなくなり電荷の有無による静電潜像が形成され、
次の現像部６（第２図）でトナーが付着されて、顕像化
される。The photosensitive drum 1 is rotated by a drive motor in the direction of arrow A, and the surface of the photosensitive drum 1 is first uniformly charged by a charging device 4 (FIG. 2). Next, each optical element of the play-shaped light source 2 is turned on for a desired image, and the surface of the photoreceptor drum 1 is imaged and exposed by the lens array 3. At this time, photoreceptor drum 1. The array light source 2 and the lens array 3 are controlled by the regulating roller 17 that is in contact with the outer periphery of the photoreceptor drum 1.
The distance between the lens array 3 and the surface of the photosensitive drum 1 is always kept constant, and the image is exposed without being out of focus. The exposed portion of the photoreceptor drum 1 loses charge, and an electrostatic latent image is formed depending on the presence or absence of charge.
In the next developing section 6 (FIG. 2), toner is applied and visualized.
以後は、衆知のごとくプロセスを経て、記録紙に転写さ
れ、定着後、排出される。From then on, as is well known, the image is transferred to recording paper, fixed, and then ejected.
発明の効果
本発明は、アレイ状光源とレンズアレイを一体化して可
動可能に保持するとともに、規制ローラを設けて規制ロ
ーラと感光体ドラム表面を当接することにより、アレイ
状光源とレンズアレイを感光体ドラム表面との距離を変
えることなく可動し、常にレンズアレイの焦点位置にド
ラム表面を位置することができる。Effects of the Invention The present invention integrates and movably holds an arrayed light source and a lens array, and also provides a regulation roller and brings the regulation roller into contact with the surface of a photoreceptor drum, thereby making the arrayed light source and lens array photosensitive. The drum surface can be moved without changing the distance from the drum surface, and the drum surface can always be positioned at the focal point of the lens array.
すなわち本発明は、感光体ドラムが偏芯したり、感光体
ドラムの直径が異なる場合でも、アレイ状光源とレンズ
アレイは、感光体ドラム表面の変化に対応できるだめ、
画像のピントずれがなく高品位な画像を得ることができ
る。That is, in the present invention, even if the photoreceptor drum is eccentric or the diameter of the photoreceptor drum is different, the arrayed light source and the lens array can cope with changes in the surface of the photoreceptor drum.
High-quality images can be obtained without image defocus.
第１図は本発明の一実施例における電子写真記録装置の
要部斜視図、第２図は従来の電子写真記録装置を示す概
略構成図である。
１・・・・・・感光体ドラム、２・・・・・・アレイ状
光源、３・・・・・・レンズアレイ、１３ａ、１３ｂ・
・・・・・本体側板、１４・・・・・・引張りばね、１
７・・・・・・規制ローラ。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図
１ 淡と先ｊｉ）”ラム
２ 了しＩイズた８弓、
３ ° しンでアしイ
＋３．Ｌ： ＄Ｊｉ、イＩ’ｌ ｇミＪＪｂ ：
木４ト使）η（
＋４ ： 、１１．ｑ芝り１さ序つ第２図FIG. 1 is a perspective view of essential parts of an electrophotographic recording apparatus according to an embodiment of the present invention, and FIG. 2 is a schematic configuration diagram showing a conventional electrophotographic recording apparatus. DESCRIPTION OF SYMBOLS 1... Photosensitive drum, 2... Array light source, 3... Lens array, 13a, 13b.
...Body side plate, 14...Tension spring, 1
7...Regulation roller. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 1 Light and point ji)" Ram 2 finished I is ta 8 bow, 3 ° Shin de Ashi I + 3.L: $Ji, I'l gmi JJb:
Tree 4 Toshi) η (+4: , 11.q turf 1 increments Figure 2
Claims (2)
したアレイ状の光源と、前記感光体ドラムの軸方向に集
束性光伝達素子を一次元的に配列した光伝達部材と、前
記光源と前記光伝達部材を一体的に保持する保持部材と
、前記保持部材を前記感光体ドラムの軸心方向に摺動可
能に保持にする摺動案内手段と、前記保持手段を前記感
光体ドラムの軸心に向かって付勢する付勢手段と、前記
光源と前記感光体ドラム表面との距離を一定に規制する
規制手段とを有した電子写真記録装置。(1) an array light source in which light emitting elements are arranged one-dimensionally in the axial direction of the photoconductor drum; a light transmission member in which convergent light transmission elements are arranged one-dimensionally in the axial direction of the photoconductor drum; a holding member that integrally holds the light source and the light transmission member; a sliding guide means that holds the holding member slidably in the axial direction of the photoreceptor drum; An electrophotographic recording apparatus comprising: a biasing means for biasing toward the axis of the light source; and a regulating means for regulating the distance between the light source and the surface of the photoreceptor drum to a constant value.
表面を回動可能に当接するローラからなる特許請求め範
囲第１項記載の電子写真記録装置。(2) The electrophotographic recording apparatus according to claim 1, wherein the regulating means includes a roller provided on the holding member and rotatably abutting the surface of the photosensitive drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59219733A JPS6195956A (en) | 1984-10-18 | 1984-10-18 | Electronic photorecorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59219733A JPS6195956A (en) | 1984-10-18 | 1984-10-18 | Electronic photorecorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6195956A true JPS6195956A (en) | 1986-05-14 |
Family
ID=16740125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59219733A Pending JPS6195956A (en) | 1984-10-18 | 1984-10-18 | Electronic photorecorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6195956A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6335013U (en) * | 1986-08-26 | 1988-03-07 | ||
| JPS6366581A (en) * | 1986-09-09 | 1988-03-25 | Fuji Xerox Co Ltd | Attaching device for light emitting element for write |
| JPH0210548U (en) * | 1988-06-30 | 1990-01-23 | ||
| JPH02269068A (en) * | 1988-12-05 | 1990-11-02 | Eastman Kodak Co | Device for precisely mounting electron beam emitting print head assembly |
| EP0398294A2 (en) * | 1989-05-16 | 1990-11-22 | Mitsubishi Denki Kabushiki Kaisha | Electrophotographic printer |
| US5038186A (en) * | 1988-11-07 | 1991-08-06 | Mitsubishi Denki Kabushiki Kaisha | Light emitting diode array |
| US5045895A (en) * | 1988-11-07 | 1991-09-03 | Mitsubishi Denki Kabushiki Kaisha | Light emitting diode array with electrodes |
| JPH03108249U (en) * | 1990-02-06 | 1991-11-07 | ||
| US5094970A (en) * | 1988-11-07 | 1992-03-10 | Mitsubishi Denki Kabushiki Kaisha | Method of making a light emitting diode array |
| JPH04340980A (en) * | 1991-05-17 | 1992-11-27 | Fuji Xerox Co Ltd | Optical writing device |
| US7825946B2 (en) * | 2007-10-02 | 2010-11-02 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus |
| US7982761B2 (en) | 2007-12-27 | 2011-07-19 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus having exposing unit positioning member |
| US8698860B2 (en) | 2008-02-29 | 2014-04-15 | Brother Kogyo Kabushiki Kaisha | Image forming device with exposure unit and pressing member |
-
1984
- 1984-10-18 JP JP59219733A patent/JPS6195956A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6335013U (en) * | 1986-08-26 | 1988-03-07 | ||
| JPS6366581A (en) * | 1986-09-09 | 1988-03-25 | Fuji Xerox Co Ltd | Attaching device for light emitting element for write |
| JPH0210548U (en) * | 1988-06-30 | 1990-01-23 | ||
| US5094970A (en) * | 1988-11-07 | 1992-03-10 | Mitsubishi Denki Kabushiki Kaisha | Method of making a light emitting diode array |
| US5038186A (en) * | 1988-11-07 | 1991-08-06 | Mitsubishi Denki Kabushiki Kaisha | Light emitting diode array |
| US5045895A (en) * | 1988-11-07 | 1991-09-03 | Mitsubishi Denki Kabushiki Kaisha | Light emitting diode array with electrodes |
| JPH02269068A (en) * | 1988-12-05 | 1990-11-02 | Eastman Kodak Co | Device for precisely mounting electron beam emitting print head assembly |
| EP0398294A2 (en) * | 1989-05-16 | 1990-11-22 | Mitsubishi Denki Kabushiki Kaisha | Electrophotographic printer |
| US5164746A (en) * | 1989-05-16 | 1992-11-17 | Mitsubishi Denki Kabushiki Kaisha | Electrophotographic printer |
| JPH03108249U (en) * | 1990-02-06 | 1991-11-07 | ||
| JPH04340980A (en) * | 1991-05-17 | 1992-11-27 | Fuji Xerox Co Ltd | Optical writing device |
| US7825946B2 (en) * | 2007-10-02 | 2010-11-02 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus |
| US7982761B2 (en) | 2007-12-27 | 2011-07-19 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus having exposing unit positioning member |
| US8717398B2 (en) | 2007-12-27 | 2014-05-06 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus having exposing unit positioning member |
| US9201383B2 (en) | 2007-12-27 | 2015-12-01 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus having exposing unit positioning member |
| US8698860B2 (en) | 2008-02-29 | 2014-04-15 | Brother Kogyo Kabushiki Kaisha | Image forming device with exposure unit and pressing member |
| US9141023B2 (en) | 2008-02-29 | 2015-09-22 | Brother Kogyo Kabushiki Kaisha | Image forming device with exposure unit and pressing member |
| US9651889B2 (en) | 2008-02-29 | 2017-05-16 | Brother Kogyo Kabushiki Kaisha | Image forming device with exposure unit and pressing member |
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