JPS62104214U - - Google Patents
Info
- Publication number
- JPS62104214U JPS62104214U JP19527785U JP19527785U JPS62104214U JP S62104214 U JPS62104214 U JP S62104214U JP 19527785 U JP19527785 U JP 19527785U JP 19527785 U JP19527785 U JP 19527785U JP S62104214 U JPS62104214 U JP S62104214U
- Authority
- JP
- Japan
- Prior art keywords
- scanning system
- laser scanning
- start signal
- reflective surface
- laser
- 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
- 238000001514 detection method Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 5
- 108091008695 photoreceptors Proteins 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000005192 partition Methods 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 description 1
Description
第１図はこの考案に係るレーザ走査系の書込み
開始信号検出装置の実施例１を示す斜視説明図、
第２図はこの考案に係るレーザ走査系の書込み開
始信号検出装置の実施例２を示す平面説明図、第
３図は従来におけるレーザ走査系の書込み開始信
号検出装置の一例を示す斜視説明図である。
〔符号の説明〕、１……半導体レーザ（レーザ
発生源）、２……コリメータレンズ、３……ポリ
ゴンミラー、４……感光ドラム（感光体）、５…
…ｆθレンズ、６，７……シリンドリカルレンズ
、８……ユニツトケース、２０……反射面、２１
……光センサ、２２……光学レンズ。
FIG. 1 is a perspective explanatory view showing a first embodiment of a writing start signal detection device for a laser scanning system according to this invention;
FIG. 2 is an explanatory plan view showing a second embodiment of a writing start signal detection device for a laser scanning system according to the present invention, and FIG. 3 is a perspective explanatory view showing an example of a conventional writing start signal detection device for a laser scanning system. be. [Explanation of symbols] 1... Semiconductor laser (laser source), 2... Collimator lens, 3... Polygon mirror, 4... Photosensitive drum (photosensitive member), 5...
... fθ lens, 6, 7... Cylindrical lens, 8... Unit case, 20... Reflective surface, 21
... Optical sensor, 22 ... Optical lens.
Claims (1)
分けて感光体に照射するようにしたレーザ走査系
において、上記感光体へ向かうレーザビームの前
走査範囲に対応したレーザ走査系部材の一部に反
射面を形成すると共に、この反射面に対向した部
位に光センサを配設し、この光センサによつて感
光体に対する書込み開始信号を検出するようにし
たことを特徴とするレーザ走査系の書込み開始信
号検出装置。 (2) 上記反射面が形成されるレーザ走査系部材
は、レーザ発生源からのビームを走査方向に振分
けるポリゴンミラーと感光体との間に配設された
ポリゴンミラー面倒れ補正用の後段シリンドリカ
ルレンズであることを特徴とする実用新案登録請
求の範囲第１項記載のレーザ走査系の書込み開始
信号検出装置。 (3) 反射面と光センサとの間に後段シリンドリ
カルレンズと同等のレンズを介装したことを特徴
とする実用新案登録請求の範囲第２項記載のレー
ザ走査系の書込み開始信号検出装置。 (4) 上記反射面は、レーザ走査系を区画するユ
ニツトケースの光透過用窓に形成されていること
を特徴とする実用新案登録請求の範囲第１項記載
のレーザ走査系の書込み開始信号検出装置。[Scope of Claim for Utility Model Registration] (1) In a laser scanning system in which a beam from a laser source is distributed in the scanning direction and irradiated onto a photoconductor, a system that corresponds to the pre-scanning range of the laser beam directed toward the photoconductor. A reflective surface is formed in a part of the laser scanning system member, and an optical sensor is provided at a portion facing the reflective surface, and the optical sensor detects a write start signal to the photoreceptor. Characteristic laser scanning system write start signal detection device. (2) The laser scanning system member on which the above reflective surface is formed is a rear-stage cylindrical member for correcting tilting of the polygon mirror surface, which is disposed between the polygon mirror that distributes the beam from the laser source in the scanning direction and the photoreceptor. A writing start signal detection device for a laser scanning system according to claim 1, which is a lens. (3) A writing start signal detection device for a laser scanning system according to claim 2, characterized in that a lens equivalent to a rear-stage cylindrical lens is interposed between the reflective surface and the optical sensor. (4) Detection of a write start signal in a laser scanning system according to claim 1 of the utility model registration claim, wherein the reflective surface is formed in a light transmission window of a unit case that partitions the laser scanning system. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19527785U JPS62104214U (en) | 1985-12-20 | 1985-12-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19527785U JPS62104214U (en) | 1985-12-20 | 1985-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62104214U true JPS62104214U (en) | 1987-07-03 |
Family
ID=31153022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19527785U Pending JPS62104214U (en) | 1985-12-20 | 1985-12-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62104214U (en) |
-
1985
- 1985-12-20 JP JP19527785U patent/JPS62104214U/ja active Pending
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