JPS634558U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図、第４図はレンズ移動機構とスリツト移
動機構の連動説明図、第２図は、実施例の概略断
面図、第３図ａ，ｂは白枠形成装置の動作説明図
、第５図はレンズ移動距離と白枠幅の関係を示す
グラフ。 ２１はズームレンズ、２８はレンズ台、２８ｄ
はラツク部、２９は揺動アーム、３０は第１ギア
、３１は第２ギア、３３はスリツトラツト、３４
はスリツト板。 1 and 4 are explanatory diagrams of the interlocking movement of the lens moving mechanism and the slit moving mechanism, FIG. 2 is a schematic sectional view of the embodiment, FIGS. 3 a and b are explanatory diagrams of the operation of the white frame forming device, and FIG. The figure is a graph showing the relationship between lens movement distance and white frame width. 21 is a zoom lens, 28 is a lens stand, 28d
is a rack part, 29 is a swing arm, 30 is a first gear, 31 is a second gear, 33 is a slit rack, 34
is a slit plate.

Claims (1)

【実用新案登録請求の範囲】 ズームレンズを有する可変倍光学系を備え、該
ズームレンズを移動させるレンズ移動機構を持つ
電子写真複写機において、 感光体上に光を照射するための光源と、 該光源の光が該感光体に照射する領域を感光体
の軸方向に沿つて調整可能なスリツト部材と、該
ズームレンズの変倍時の直線運動により、該スリ
ツト部材を移動させるスリツト移動機構を備え、
該ズームレンズの等倍複写位置近傍と縮小複写位
置全域又は縮小複写位置の一部の領域において、
該レンズ移動機構と該スリツト移動機構が連動す
ることを特徴とする電子写真複写機の白枠形成装
置。[Claims for Utility Model Registration] An electrophotographic copying machine equipped with a variable magnification optical system having a zoom lens and a lens moving mechanism for moving the zoom lens, comprising: a light source for irradiating light onto a photoreceptor; A slit member that can adjust the area where the photoreceptor is irradiated with light from a light source along the axial direction of the photoreceptor, and a slit moving mechanism that moves the slit member by linear movement when changing the magnification of the zoom lens. ,
In the vicinity of the same-magnification copying position and the entire reduced copying position or a part of the reduced copying position of the zoom lens,
A white frame forming device for an electrophotographic copying machine, wherein the lens moving mechanism and the slit moving mechanism are interlocked.