JPS6142535U

JPS6142535U - Copy machine exposure device

Info

Publication number: JPS6142535U
Application number: JP12749884U
Authority: JP
Inventors: 喜久男大木; 順三宮本; 浩古谷
Original assignee: 富士ゼロックス株式会社
Priority date: 1984-08-24
Filing date: 1984-08-24
Publication date: 1986-03-19

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図はこの考案に係る複写機の露光装置の一実施例を
示す斜視説明図、第２図は第１図中■方向から見た矢視
図、第３図は第１図中■方向から見た矢視図、第４図は
第１図中ＩＶ−ＩＶ線断面図、第５図は露光装置各部の
照度Ｌの分布を示す説明図、第ｄ図は従来における複写
機の露光装置の一例を示す斜視鴫明図である。〔符号説明〕、Ｃ・・・・・・プラテンの隅部、Ｓ・・
・・・・フラッシュ照明手段、１・・・・・・ハウジン
グ、１ａ・・・・・・頂部、１ｂ・−・・・・・底部、
２・・・・・・複写原稿、３・・・・・・プラテン、４
・・・・・・結像レンズ、５・・・・・・感光面、１６
ａ乃至１６ｄ・・・・・・フラッシュ光源、１７ａ乃棄
１７ｄ・・・・・・リフレクタ、１８・・・・・・開口
、１９・・・・・・反射面、２０・・・・・・遮光部、
２１・・・・・・切欠開口。Fig. 1 is a perspective explanatory view showing an embodiment of the exposure device of a copying machine according to this invention, Fig. 2 is a view taken from the direction of arrows in Fig. 1, and Fig. 3 is a view in the direction of Fig. 1. 4 is a sectional view taken along the line IV-IV in FIG. 1, FIG. 5 is an explanatory diagram showing the distribution of illuminance L in each part of the exposure device, and FIG. d is a conventional exposure device of a copying machine. It is a perspective view showing an example. [Explanation of symbols], C...Corner of platen, S...
...Flash illumination means, 1...Housing, 1a...Top part, 1b...Bottom part,
2... Copy original, 3... Platen, 4
......Imaging lens, 5...Photosensitive surface, 16
a to 16d...Flash light source, 17a to 17d...Reflector, 18...Aperture, 19...Reflecting surface, 20... light shielding part,
21...Notch opening.

Claims

[Scope of utility model registration request]

A housing having a closed cross-section structure, a platen that is attached to a rectangular opening formed at the top of the housing and constitutes a mounting surface for a multi-dimensional original and is made of a transparent member, and is disposed inside the housing. a flash illumination means for instantaneously illuminating the entire surface of the platen, and an imaging lens mounted in a hole provided approximately at the center of the bottom of the housing,
The original image of the copy document on the platen illuminated by the flash illumination means is projected onto a predetermined photosensitive surface through the imaging lens.
In the exposure device for a copying machine, the flash illumination means includes flash light sources installed at positions corresponding to each corner of the platen, and each flash light source installed so as to cover the non-platen side of each flash light source. and a reflector that reflects light directed from each flash light source toward the non-platen side toward the periphery of each corner of the corresponding platen, and the upper edge of the opening of the reflector partially covers the upper part of the flash light source. A light shielding part is provided in a protruding manner, and a cutout opening is provided in the middle of the protruding edge of the light shielding part, and the light distribution path from each flash light source to each corner of the platen is formed by the cutout opening. Exposure device for copying machines.