JPH0659206A - Electrophotographic device - Google Patents
Electrophotographic deviceInfo
- Publication number
- JPH0659206A JPH0659206A JP3019174A JP1917491A JPH0659206A JP H0659206 A JPH0659206 A JP H0659206A JP 3019174 A JP3019174 A JP 3019174A JP 1917491 A JP1917491 A JP 1917491A JP H0659206 A JPH0659206 A JP H0659206A
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- laser beam
- laser light
- reflected
- horizontal synchronization
- 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.)
- Granted
Links
Landscapes
- Facsimile Scanning Arrangements (AREA)
- Mechanical Optical Scanning Systems (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ディジタル複写機やレ
ーザプリンタ等のようにレーザ光により画像を形成する
電子写真装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotographic apparatus, such as a digital copying machine or a laser printer, which forms an image with laser light.
【０００２】[0002]
【従来の技術】従来、この種の電子写真装置では、図６
に示すように、画像に応じて変調されたレーザ光が半導
体レーザ１から出射されてポリゴンミラー２により等角
速度偏向され、この等角速度偏向されたレーザ光が感光
ドラム５上で等速度走査するようにｆ−θレンズ３によ
り補正される。このｆ−θレンズ３により補正されたレ
ーザ光は、ミラー４の画像域により反射されて感光体５
上に結像するとともに、支持部材８により支持された水
平同期検知用ミラー６により図示方向Ａに反射されて光
ファイバ７の端面に導かれ、１回の主走査すなわち水平
走査が検出される。2. Description of the Related Art Conventionally, in the electrophotographic apparatus of this type, as shown in FIG.
As shown in FIG. 2, laser light modulated according to the image is emitted from the semiconductor laser 1 and deflected at a constant angular velocity by the polygon mirror 2, so that the laser light deflected at a constant angular velocity scans the photosensitive drum 5 at a constant velocity. Is corrected by the f-θ lens 3. The laser light corrected by the f-θ lens 3 is reflected by the image area of the mirror 4 and is reflected by the photoreceptor 5.
The image is imaged on the upper side, reflected by the horizontal synchronization detection mirror 6 supported by the support member 8 in the direction A in the drawing and guided to the end face of the optical fiber 7, and one main scanning, that is, horizontal scanning is detected.
【０００３】ここで、水平同期検知用ミラー６は、水平
断面が略くの字形の支持部材８により支持されてミラー
４の端部近傍の画像域の外に配置され、水平同期検知用
ミラー６は、レーザ光を光ファイバ７の端面に正確に導
く必要がある。この場合、レーザ光の走査方向について
は水平同期検知用ミラー６の大きさを光ファイバ７の端
面の直径より大きく構成すればよいが、走査方向と直交
方向すなわち図面と直交方向については調整を必要とす
る。この調整を行う場合、光ファイバ７の端面をその方
向に調整したり、支持部材８の角度をその方向に調整し
て水平同期検知用ミラー６の反射角度を調整する方法が
知られているが、後者の方法が簡単である。したがっ
て、支持部材８の水平断面がくの字形に形成されて、こ
の支持部材８の一方により水平同期検知用ミラー６が支
持され、支持部材８の他方がレーザ光の光軸と略平行に
なるように配置されてこの支持部材８の他方により水平
同期検知用ミラー６の反射角度が調整される。The horizontal sync detection mirror 6 is supported by a support member 8 having a substantially V-shaped horizontal section and is arranged outside the image area near the end of the mirror 4, and the horizontal sync detection mirror 6 is provided. Needs to accurately guide the laser light to the end face of the optical fiber 7. In this case, the size of the horizontal sync detection mirror 6 may be made larger than the diameter of the end face of the optical fiber 7 in the scanning direction of the laser light, but adjustment is necessary in the direction orthogonal to the scanning direction, that is, the direction orthogonal to the drawing. And When this adjustment is performed, there are known methods of adjusting the end face of the optical fiber 7 in that direction and adjusting the angle of the support member 8 in that direction to adjust the reflection angle of the horizontal synchronization detection mirror 6. The latter method is easy. Therefore, the horizontal cross section of the support member 8 is formed in a dogleg shape, one of the support members 8 supports the horizontal synchronization detection mirror 6, and the other of the support members 8 is substantially parallel to the optical axis of the laser light. The other side of the support member 8 adjusts the reflection angle of the horizontal sync detection mirror 6.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記従
来の電子写真装置では、支持部材８の水平断面が略くの
字形に形成され、この支持部材８の一方により水平同期
検知用ミラー６が支持され、支持部材８の他方により水
平同期検知用ミラー６の反射角度が調整されるので、レ
ーザ光が支持部材８の他方により不要に反射して画像域
に飛び込み（図示矢印Ｂ方向）、したがって、フレア光
が発生してこのフレア光により感光体５が不要に露光さ
れるという問題点がある。However, in the above-mentioned conventional electrophotographic apparatus, the horizontal cross section of the supporting member 8 is formed in a substantially V shape, and one of the supporting members 8 supports the horizontal synchronization detecting mirror 6. Since the reflection angle of the horizontal synchronization detection mirror 6 is adjusted by the other support member 8, the laser light is reflected unnecessarily by the other support member 8 and jumps into the image area (direction of arrow B in the drawing), and therefore the flare occurs. There is a problem that light is generated and the photoconductor 5 is unnecessarily exposed by the flare light.
【０００５】本発明は上記従来の問題点に鑑み、水平同
期を検知するミラーを支持する部材によりレーザ光が不
要に反射されて感光体が露光されることを防止すること
ができる電子写真装置を提供することを目的とする。In view of the above conventional problems, the present invention provides an electrophotographic apparatus capable of preventing the photosensitive member from being exposed due to unnecessary reflection of laser light by a member supporting a mirror for detecting horizontal synchronization. The purpose is to provide.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、第１の手段は、レーザ光により画像を形成する電子
写真装置において、前記画像域の外に配置され、前記レ
ーザ光の水平同期を検出するために前記レーザ光を反射
するミラーと、前記レーザ光の走査面における断面が略
くの字形に形成され、一方により前記ミラーを支持し、
他方により前記ミラーの反射面の角度を調整する支持部
材と、レーザ光が前記支持部材の他方により反射し、前
記画像域に飛び込んで発生するフレア光を防止するフレ
ア防止手段とを備えたことを特徴とする。In order to achieve the above object, a first means is arranged outside the image area in an electrophotographic apparatus for forming an image by laser light, and horizontal synchronization of the laser light is provided. A mirror for reflecting the laser light to detect the, and a cross section of the scanning surface of the laser light is formed in a substantially V shape, supporting the mirror by one,
A support member for adjusting the angle of the reflection surface of the mirror by the other side, and a flare prevention unit for preventing flare light generated by laser light reflected by the other of the support members and jumping into the image area. Characterize.
【０００７】第２の手段は、第１の手段のフレア防止手
段が前記支持部材の他方のレーザ光の光軸側の面におい
て、断面が略三角形の複数の突起がレーザ光の走査方向
と直交方向に沿って形成され、前記突起の反射によりフ
レア光を防止することを特徴とする。In the second means, the flare prevention means of the first means has a plurality of projections each having a substantially triangular cross section, which are orthogonal to the scanning direction of the laser beam, on the surface of the supporting member on the optical axis side of the other laser beam. The projections are formed along the direction, and the flare light is prevented by the reflection of the protrusions.
【０００８】第３の手段は、第２の手段の突起の反射面
の立ち上がり角度βは、 β＞（θ2 −θ1 ）／２ （但し、θ1 は前記支持部材の他方のレーザ光の光軸側
の面におけるレーザ光の入射角度、θ2 は前記ミラーの
反対側の画像域の端部と前記突起の反射位置を結ぶ面
と、前記支持部材の他方の光軸側の面が形成する角度と
する。）であることを特徴とする。In the third means, the rising angle β of the reflecting surface of the projection of the second means is β> (θ2-θ1) / 2 (where θ1 is the optical axis side of the other laser beam of the supporting member). The angle of incidence of the laser light on the surface of, the angle θ2 is the angle formed by the surface connecting the end of the image area on the opposite side of the mirror and the reflection position of the protrusion and the surface on the other optical axis side of the supporting member. .).
【０００９】[0009]
【作用】第１の手段は上記構成により、ミラーの反射面
の角度を調整する支持部材の他方によりレーザ光が不要
に反射し、画像域に飛び込んで発生するフレア光がフレ
ア防止手段により防止され、したがって、感光体が不要
に露光されることを防止することができる。According to the first means, the laser light is unnecessarily reflected by the other supporting member for adjusting the angle of the reflecting surface of the mirror, and flare light generated by jumping into the image area is prevented by the flare prevention means. Therefore, it is possible to prevent the photoconductor from being unnecessarily exposed.
【００１０】第２の手段は、フレア防止手段が支持部材
の突起により構成されるので、フレア防止手段を安価に
構成することができる。In the second means, the flare prevention means is constituted by the projection of the support member, so that the flare prevention means can be constructed at low cost.
【００１１】第３の手段は、突起の角度によりフレア光
が遮断されるので、感光体が不要に露光されることを安
価にかつ確実に防止することができる。In the third means, the flare light is blocked by the angle of the projection, so that the photosensitive member can be prevented from being unnecessarily exposed at low cost and reliably.
【００１２】[0012]
【実施例】以下、図面を参照して本発明の実施例を説明
する。図１は本発明に係る電子写真装置の一実施例を示
す平面図、図２は図１の電子写真装置の側面図、図３お
よび図４は図１の支持部材の詳細な構成を示す図、図５
は図３および図４の支持部材の突起面の詳細な構成を示
す説明図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing an embodiment of the electrophotographic apparatus according to the present invention, FIG. 2 is a side view of the electrophotographic apparatus of FIG. 1, and FIGS. 3 and 4 are views showing a detailed configuration of the supporting member of FIG. , Fig. 5
FIG. 5 is an explanatory diagram showing a detailed configuration of a protruding surface of the support member of FIGS. 3 and 4.
【００１３】図１及び図２において、半導体レーザ２０
から出射したレーザ光は、コリメートレンズ２１により
平行な光束に整形され、次いでアパーチャ３２により所
定の形状のビーム径に整形される。このレーザ光は、シ
リンダレンズ２２により副走査方向が圧縮された後ポリ
ゴンミラー２４に入射する。ポリゴンミラー２４は、そ
の反射面が正確な正多角形に形成され、ポリゴンモータ
２５により所定の方向に所定の速度で回転する。尚、こ
の回転速度は、感光体４０の回転速度と、画像の書き込
み速度とポリゴンミラー２４の面数により決定される。In FIGS. 1 and 2, the semiconductor laser 20 is shown.
The laser light emitted from is shaped into a parallel light flux by the collimator lens 21, and then shaped into a beam diameter of a predetermined shape by the aperture 32. This laser beam is incident on the polygon mirror 24 after being compressed in the sub-scanning direction by the cylinder lens 22. The polygon mirror 24 has an accurate regular polygonal reflecting surface, and is rotated by a polygon motor 25 in a predetermined direction at a predetermined speed. The rotation speed is determined by the rotation speed of the photoconductor 40, the image writing speed, and the number of faces of the polygon mirror 24.
【００１４】ポリゴンミラー２４により反射されたレー
ザ光は等角速度偏向されるので、感光体４０上で等速度
走査されて結像されるようにｆ−θレンズ（２６ａ、２
６ｂ）により補正される。ｆ−θレンズ（２６ａ、２６
ｂ）は、球面レンズ２６ａとトーリックレンズ２６ｂに
より構成され、また、シリンダレンズ２２とトーリック
レンズ２６ｂは、ポリゴンミラー２４の面倒れを補正す
る。尚、これらの光学系は、上記光路を正確に形成する
ために筐体３１により支持されている。なお、符号２３
はポリゴンミラー２４に塵埃等が付着しないように設け
られた保護用の透過ガラスである。Since the laser light reflected by the polygon mirror 24 is deflected at a constant angular velocity, the f-θ lens (26a, 26a, 2a, 26a, 2a is formed so that it is scanned at a constant velocity on the photoconductor 40 to form an image.
6b). f-θ lens (26a, 26a
(b) is composed of a spherical lens 26a and a toric lens 26b, and the cylinder lens 22 and the toric lens 26b correct the surface tilt of the polygon mirror 24. In addition, these optical systems are supported by a housing 31 in order to accurately form the optical path. Note that reference numeral 23
Is a protective transparent glass provided so that dust or the like does not adhere to the polygon mirror 24.
【００１５】ｆ−θレンズ（２６ａ、２６ｂ）を透過し
たレーザ光は、ミラー２７の画像域により反射されて感
光体４０上に結像するとともに、画像域の外に配置され
て支持部材５０により支持された水平同期検知用ミラー
５１により光ファイバ５３の端面に導かれ、１回の主走
査すなわち水平走査が検出される。ここで、前述したよ
うに、水平同期検知用ミラー５１は、レーザ光を光ファ
イバ５３の端面に正確に導く必要があるが、レーザ光の
走査方向については水平同期検知用ミラー５１の大きさ
を光ファイバ５３の端面の直径より大きく構成すればよ
く、走査方向の直交方向すなわち図面と直交方向につい
ては調整を必要とする。そして、この調整を行う場合、
光ファイバ５３の端面をその方向に調整したり、支持部
材５０の角度をその方向に調整して水平同期検知用ミラ
ー５１の反射角度を調整する方法が知られているが、後
者の方法が簡単である。したがって、支持部材５０の水
平断面がくの字形に形成されて、この支持部材５０の一
方により水平同期検知用ミラー５１が支持され、支持部
材５０の他方がレーザ光の光軸と平行になるように配置
されてこの支持部材５０の他方により水平同期検知用ミ
ラー５１の反射角度が調整される。The laser light transmitted through the f-θ lens (26a, 26b) is reflected by the image area of the mirror 27 to form an image on the photoconductor 40, and is arranged outside the image area by the support member 50. It is guided to the end face of the optical fiber 53 by the supported horizontal synchronization detecting mirror 51, and one main scanning, that is, horizontal scanning is detected. Here, as described above, the horizontal synchronization detection mirror 51 needs to accurately guide the laser light to the end face of the optical fiber 53, but the size of the horizontal synchronization detection mirror 51 is set in the scanning direction of the laser light. The diameter may be set larger than the diameter of the end face of the optical fiber 53, and adjustment is required in the direction orthogonal to the scanning direction, that is, the direction orthogonal to the drawing. And when making this adjustment,
A method of adjusting the end face of the optical fiber 53 in that direction or adjusting the angle of the supporting member 50 in that direction to adjust the reflection angle of the horizontal synchronization detection mirror 51 is known, but the latter method is simple. Is. Therefore, the horizontal cross section of the support member 50 is formed in a dogleg shape, one of the support members 50 supports the horizontal synchronization detection mirror 51, and the other of the support members 50 is parallel to the optical axis of the laser light. The reflection angle of the horizontal synchronization detecting mirror 51 is adjusted by the other of the supporting members 50 arranged.
【００１６】次に、図３、図４及び図５を参照して支持
部材５０の詳細な構成を説明する。支持部材５０の他方
のレーザ光の光軸側の面、すなわち、レーザ光が不要に
反射してミラー２７の画像域に飛び込んでフレア光が発
生する面には、レーザ光がミラー２７の画像域外に反射
するように（図示方向Ｃ）、水平断面が略三角形の複数
の突起５２が走査方向と直交方向に沿って形成されてい
る。この場合、図５に示すように、レーザ光がミラー２
７の画像域に入射しない条件は、レーザ光が図示斜線側
に反射されればよく、この場合、支持部材５０の他方の
レーザ光の光軸側の面におけるレーザ光の入射角度をθ
1 とし、ミラー５０の画像域の反対側の端部と突起５２
の反射位置を結ぶ面と、支持部材５０の他方の光軸側の
面が形成する角度をθ2 とし、突起５２の反射面による
レーザ光の反射角度をαとすると、突起５２の反射面の
立ち上がり角度は、 α＋β＞θ2 ∴β＞（θ2 −θ1 ）／２ となる。したがって、上記実施例によれば。支持部材５
０の他方のレーザ光の光軸側の面の突起５２により、レ
ーザ光が支持部材５０により不要に反射してミラー２７
の画像域に飛び込み、フレア光が発生することを防止す
ることができる。Next, the detailed structure of the support member 50 will be described with reference to FIGS. 3, 4 and 5. On the other surface of the supporting member 50 on the optical axis side of the laser light, that is, on the surface where the laser light is reflected unnecessarily and jumps into the image area of the mirror 27 to generate flare light, the laser light is outside the image area of the mirror 27. A plurality of projections 52 each having a substantially horizontal horizontal section are formed along the direction orthogonal to the scanning direction so as to be reflected (in the direction C in the drawing). In this case, as shown in FIG.
The condition that the laser beam is not incident on the image region of 7 is that the laser beam is reflected to the oblique line side in the drawing, and in this case, the incident angle of the laser beam on the surface of the other laser beam of the supporting member 50 on the optical axis side is θ.
1, the end of the mirror 50 opposite to the image area and the protrusion 52
Let θ2 be the angle formed by the surface connecting the reflection positions with the surface on the other optical axis side of the support member 50, and let α be the reflection angle of the laser light by the reflection surface of the projection 52, then the rise of the reflection surface of the projection 52. The angle is α + β> θ2 ∴β> (θ2-θ1) / 2. Therefore, according to the above embodiment. Support member 5
The laser light is unnecessarily reflected by the support member 50 by the projection 52 on the optical axis side surface of the other laser light of 0 and is reflected by the mirror 27.
It is possible to prevent the flare light from being generated by jumping into the image area of.
【００１７】[0017]
【発明の効果】以上説明したように、請求項１記載の発
明は、レーザ光により画像を形成する電子写真装置にお
いて、前記画像域の外に配置され、前記レーザ光の水平
同期を検出するために前記レーザ光を反射するミラー
と、前記レーザ光の走査面における断面が略くの字形に
形成され、一方により前記ミラーを支持し、他方により
前記ミラーの反射面の角度を調整する支持部材と、レー
ザ光が前記支持部材の他方により反射し、前記画像域に
飛び込んで発生するフレア光を防止するフレア防止手段
とを備えたので、感光体が不要に露光されることを防止
することができる。As described above, according to the first aspect of the invention, in the electrophotographic apparatus for forming an image by laser light, the electrophotographic apparatus is arranged outside the image area to detect the horizontal synchronization of the laser light. A mirror that reflects the laser light, and a support member that has a cross section in the scanning surface of the laser light formed in a substantially V shape, and that supports the mirror by one and adjusts the angle of the reflection surface of the mirror by the other. Since the laser light is reflected by the other of the support members and includes flare prevention means for preventing flare light that jumps into the image area and is generated, it is possible to prevent the photoconductor from being unnecessarily exposed. .
【００１８】請求項２の発明は、請求項１のフレア防止
手段が前記支持部材の他方のレーザ光の光軸側の面にお
いて、断面が略三角形の複数の突起がレーザ光の走査方
向と直交方向に沿って形成され、前記突起の反射により
フレア光を防止するので、フレア防止手段を安価に構成
することができる。According to a second aspect of the present invention, the flare prevention means of the first aspect is such that a plurality of protrusions having a substantially triangular cross section are orthogonal to the scanning direction of the laser beam on the surface of the supporting member on the optical axis side of the other laser beam. Since flare light is formed along the direction to prevent flare light by the reflection of the protrusions, the flare prevention means can be constructed at low cost.
【００１９】請求項３の発明は、請求項２の突起の反射
面の立ち上がり角度βが、 β＞（θ2 −θ1 ）／２ （但し、θ1 は前記支持部材の他方のレーザ光の光軸側
の面におけるレーザ光の入射角度、θ2 は前記ミラーの
反対側の画像域の端部と前記突起の反射位置を結ぶ面
と、前記支持部材の他方の光軸側の面が形成する角度と
する。）であるので、感光体が不要に露光されることを
安価にかつ確実に防止することができる。According to a third aspect of the present invention, the rising angle β of the reflecting surface of the protrusion of the second aspect is β> (θ2-θ1) / 2 (where θ1 is the optical axis side of the other laser beam of the supporting member). The angle of incidence of the laser light on the surface of, the angle θ2 is the angle formed by the surface connecting the end of the image area on the opposite side of the mirror and the reflection position of the protrusion and the surface on the other optical axis side of the supporting member. .), It is possible to reliably and inexpensively prevent the photosensitive member from being exposed unnecessarily.
【図１】本発明に係る電子写真装置の一実施例を示す平
面図である。FIG. 1 is a plan view showing an embodiment of an electrophotographic apparatus according to the present invention.
【図２】図１の電子写真装置の側面図である。FIG. 2 is a side view of the electrophotographic apparatus of FIG.
【図３】図１の支持部材の詳細な構成を示す平面図であ
る。FIG. 3 is a plan view showing a detailed configuration of the support member of FIG.
【図４】図１の支持部材の詳細な構成を示す側面図であ
る。FIG. 4 is a side view showing a detailed configuration of the support member of FIG.
【図５】図３及び図４の支持部材の突起面の詳細な構成
を示す説明図である。5 is an explanatory diagram showing a detailed configuration of a protruding surface of the support member of FIGS. 3 and 4. FIG.
【図６】従来の電子写真装置を示す平面図である。FIG. 6 is a plan view showing a conventional electrophotographic apparatus.
５０ 支持部材 ５１ 水平同期検知用ミラー ５２ 突起 ５３ 光ファイバ 50 Support Member 51 Horizontal Sync Detection Mirror 52 Protrusion 53 Optical Fiber
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成５年７月２７日[Submission date] July 27, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図６[Name of item to be corrected] Figure 6
【補正方法】削除[Correction method] Delete
Claims (3)
装置において、 前記画像域の外に配置され、前記レーザ光の水平同期を
検出するために前記レーザ光を反射するミラーと、 前記レーザ光の走査面における断面が略くの字形に形成
され、一方により前記ミラーを支持し、他方により前記
ミラーの反射面の角度を調整する支持部材と、 レーザ光が前記支持部材の他方により反射し、前記画像
域に飛び込んで発生するフレア光を防止するフレア防止
手段と、を備えた電子写真装置。1. An electrophotographic apparatus for forming an image by laser light, the mirror being arranged outside the image area and reflecting the laser light for detecting horizontal synchronization of the laser light; A cross section of the scanning surface is formed in a substantially V shape, one side supports the mirror, and the other side adjusts the angle of the reflection surface of the mirror; and a laser beam is reflected by the other side of the support member. An electrophotographic apparatus, comprising: a flare prevention unit that prevents flare light generated by jumping into an image area.
他方のレーザ光の光軸側の面において、断面が略三角形
の複数の突起がレーザ光の走査方向と直交方向に沿って
形成され、前記突起の反射によりフレア光を防止するこ
とを特徴とする請求項１記載の電子写真装置。2. The flare prevention means has a plurality of protrusions each having a substantially triangular cross section formed on a surface of the other supporting member on the optical axis side of the laser light, the projections being formed in a direction orthogonal to the scanning direction of the laser light. The electrophotographic apparatus according to claim 1, wherein flare light is prevented by reflection of the projections.
は、 β＞（θ2 −θ1 ）／２ （但し、θ1 は前記支持部材の他方のレーザ光の光軸側
の面におけるレーザ光の入射角度、θ2 は前記ミラーの
画像域の反対側の端部と前記突起の反射位置を結ぶ面
と、前記支持部材の他方の光軸側の面が形成する角度と
する。）であることを特徴とする請求項２記載の電子写
真装置。3. The rising angle β of the reflection surface of the protrusion
Is β> (θ 2 −θ 1) / 2 (where θ 1 is the incident angle of the laser beam on the surface of the other supporting member on the optical axis side of the laser beam, and θ 2 is the end of the mirror opposite to the image area). The angle formed by the surface connecting the reflection position of the projection and the surface on the other optical axis side of the support member.), The electrophotographic apparatus according to claim 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3019174A JP2947952B2 (en) | 1991-01-21 | 1991-01-21 | Electrophotographic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3019174A JP2947952B2 (en) | 1991-01-21 | 1991-01-21 | Electrophotographic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0659206A true JPH0659206A (en) | 1994-03-04 |
| JP2947952B2 JP2947952B2 (en) | 1999-09-13 |
Family
ID=11991989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3019174A Expired - Lifetime JP2947952B2 (en) | 1991-01-21 | 1991-01-21 | Electrophotographic equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2947952B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1099974A2 (en) * | 1999-11-09 | 2001-05-16 | Canon Kabushiki Kaisha | Optical scanning apparatus and image-forming apparatus |
| JP2011107464A (en) * | 2009-11-18 | 2011-06-02 | Fuji Xerox Co Ltd | Optical scanning device and image forming apparatus |
-
1991
- 1991-01-21 JP JP3019174A patent/JP2947952B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1099974A2 (en) * | 1999-11-09 | 2001-05-16 | Canon Kabushiki Kaisha | Optical scanning apparatus and image-forming apparatus |
| EP1099974A3 (en) * | 1999-11-09 | 2002-07-10 | Canon Kabushiki Kaisha | Optical scanning apparatus and image-forming apparatus |
| US6501586B1 (en) | 1999-11-09 | 2002-12-31 | Canon Kabushiki Kaisha | Optical scanning apparatus and image-forming apparatus |
| JP2011107464A (en) * | 2009-11-18 | 2011-06-02 | Fuji Xerox Co Ltd | Optical scanning device and image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2947952B2 (en) | 1999-09-13 |
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