JPS6199825U

JPS6199825U -

Info

Publication number: JPS6199825U
Application number: JP18529884U
Authority: JP
Priority date: 1984-12-06
Filing date: 1984-12-06
Publication date: 1986-06-26

Description

[Brief explanation of the drawing]

第１図〜第３図は本考案のレーザプリンタの一
実施例を示す構成図、第４図は従来のマルチビー
ム形のレーザプリンタの一例を示す構成図である
。１，１_１〜１_４…レーザ光源、２_１〜２_３…ミ
ラー、３_１〜３_３…ビームスプリツタ、４_１〜４
_４…集束レンズ、５_１〜５_４…変調器、６…ポリ
ゴンミラー、７…光路調節部、８…感光ドラム、
９_１〜９_４…セルフオツクレンズ、１０…結像レ
ンズ、１１…スポツト位置検出器。 1 to 3 are block diagrams showing an embodiment of the laser printer of the present invention, and FIG. 4 is a block diagram showing an example of a conventional multi-beam type laser printer. 1, _{1 1} - 1 ₄ ... laser light source, 2 ₁ - 2 ₃ ... mirror, 3 ₁ - 3 ₃ ... beam splitter, 4 ₁ - 4
₄ ... Focusing lens, 5 ₁ to 5 ₄ ... Modulator, 6... Polygon mirror, 7... Optical path adjustment section, 8... Photosensitive drum,
9 ₁ to 9 ₄ ... self-cleaning lens, 10 ... imaging lens, 11 ... spot position detector.

Claims

[Scope of utility model registration request]

A laser printer that simultaneously scans a photoreceptor with multiple light beams includes multiple laser light sources, a polygon mirror that reflects the light beam emitted from the laser light source and projects it onto the photoreceptor, and an incident end that refractive index gradient rod lenses each disposed close to the plurality of laser light sources and with their emission ends disposed close to each other so as to cause the light beams emitted from these laser light sources to enter the polygon mirror; A laser printer comprising a spot position detector disposed in a part of the scanning range of the light beam to detect the scanning interval of the light beam and to generate a timing signal or the like for driving the laser light source.