JPS63157710U - - Google Patents
Info
- Publication number
- JPS63157710U JPS63157710U JP5114687U JP5114687U JPS63157710U JP S63157710 U JPS63157710 U JP S63157710U JP 5114687 U JP5114687 U JP 5114687U JP 5114687 U JP5114687 U JP 5114687U JP S63157710 U JPS63157710 U JP S63157710U
- Authority
- JP
- Japan
- Prior art keywords
- photosensitive drum
- axial direction
- light emitting
- emitting member
- rotating
- 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
- 230000003287 optical effect Effects 0.000 claims description 7
- 230000007423 decrease Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Fixing For Electrophotography (AREA)
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Dot-Matrix Printers And Others (AREA)
Description
第１図〜第４図は本考案の実施例を示すもので
あり、第１図は第一実施例によるレーザビームプ
リンタの光学装置を示す斜視図、第２図は発光部
材の断面図、第３図は上記第一実施例における感
光ドラムへのビームの実質的な照射状態を示す斜
視図、第４図はその平面図、第５図は本考案の第
二実施例によるレーザビームプリンタの光学装置
を示す斜視図、第６図は従来のレーザビームプリ
ンタの光学装置を示す斜視図である。
１，１４……半導体レーザ、２，１５……コリ
メートレンズ、３……回転多面鏡、１１……回転
部材、２１……感光ドラム、２３……帯電器、２
４……現像器、２５……転写器、２６……定着器
。
1 to 4 show embodiments of the present invention, in which FIG. 1 is a perspective view showing an optical device of a laser beam printer according to the first embodiment, FIG. 2 is a sectional view of a light emitting member, and FIG. 3 is a perspective view showing the state in which the beam is substantially irradiated onto the photosensitive drum in the first embodiment, FIG. 4 is a plan view thereof, and FIG. 5 is an optical diagram of a laser beam printer according to a second embodiment of the present invention. FIG. 6 is a perspective view showing an optical device of a conventional laser beam printer. 1, 14... Semiconductor laser, 2, 15... Collimating lens, 3... Rotating polygon mirror, 11... Rotating member, 21... Photosensitive drum, 23... Charger, 2
4...Developer, 25...Transfer device, 26...Fixer.
Claims (1)
部材から発せられるビームを感光ドラムの表面に
て軸方向へ走査させるビーム走査部材とを有して
おり且つ、前記感光ドラムは、走査部材からドラ
ム表面への光学的距離が軸方向に沿つて一定とな
るように、軸方向両端から軸方向中央へ直径が徐
々に小さくなる形状に形成されて成るレーザビー
ムプリンタの光学装置。 (2) ビーム走査部材は、発光部材を搭載し且つ
、その回転動作により発光部材から発せられるビ
ームを感光ドラムの表面にて軸方向へ走査させる
回転部材である実用新案登録請求の範囲第１項記
載のレーザビームプリンタの光学装置。 (3) ビーム走査部材は、発光部材から発せられ
るビームを感光ドラムの方向へ反射させて感光ド
ラムの表面にて軸方向へ走査させる回転多面鏡で
ある実用新案登録請求の範囲第１項記載のレーザ
ビームプリンタの光学装置。[Claims for Utility Model Registration] (1) It has a rotating photosensitive drum, a light emitting member, and a beam scanning member that scans the beam emitted from the light emitting member in the axial direction on the surface of the photosensitive drum, and The photosensitive drum is formed in a shape whose diameter gradually decreases from both ends in the axial direction to the center in the axial direction so that the optical distance from the scanning member to the drum surface is constant along the axial direction. optical device. (2) The beam scanning member is a rotating member that mounts a light emitting member and scans the beam emitted from the light emitting member in the axial direction on the surface of the photosensitive drum by its rotating operation.Claim 1 of the Utility Model Registration Claim Optical device of the described laser beam printer. (3) The beam scanning member is a rotating polygon mirror that reflects the beam emitted from the light emitting member toward the photosensitive drum and scans the surface of the photosensitive drum in the axial direction. Optical device of laser beam printer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987051146U JPH0516589Y2 (en) | 1987-04-03 | 1987-04-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987051146U JPH0516589Y2 (en) | 1987-04-03 | 1987-04-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63157710U true JPS63157710U (en) | 1988-10-17 |
| JPH0516589Y2 JPH0516589Y2 (en) | 1993-04-30 |
Family
ID=30875137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987051146U Expired - Lifetime JPH0516589Y2 (en) | 1987-04-03 | 1987-04-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0516589Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5415417A (en) * | 1977-06-10 | 1979-02-05 | Hitachi Ltd | Fabrication of cast |
| JPS5447511A (en) * | 1977-09-22 | 1979-04-14 | Ricoh Co Ltd | Optical scan recorder |
-
1987
- 1987-04-03 JP JP1987051146U patent/JPH0516589Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5415417A (en) * | 1977-06-10 | 1979-02-05 | Hitachi Ltd | Fabrication of cast |
| JPS5447511A (en) * | 1977-09-22 | 1979-04-14 | Ricoh Co Ltd | Optical scan recorder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0516589Y2 (en) | 1993-04-30 |