JPS61121446U

JPS61121446U -

Info

Publication number: JPS61121446U
Application number: JP289385U
Authority: JP
Priority date: 1985-01-16
Filing date: 1985-01-16
Publication date: 1986-07-31

Description

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

第１図はこの考案に係る複写機の露光装置の第
一実施例を示す要部断面説明図、第２図は第１図
中方向から見た矢視図、第３図はこの考案に係
る複写機の論光装置の第二実施例を示す要部断面
説明図、第４図は第３図中―方向から見た矢
視図、第５図は従来における複写機の露光装置の
一例を示す断面説明図である。（符号の説明）１…キヤビテイ、２…ハウジン
グ、３…複写原稿、４…プラテン、５…高反射面
、６…フラツシユ光源、７…結像レンズ、１２…
感光面、２０，３０…シエード、２１…平板プレ
ート（ブラインド部）、３５…ブラインド部材（
ブラインド部）。 Fig. 1 is a cross-sectional explanatory diagram of a main part showing a first embodiment of an exposure device for a copying machine according to this invention, Fig. 2 is a view taken from the direction of the arrow in Fig. 1, and Fig. 3 is an explanatory view of a main part showing a first embodiment of an exposure device for a copying machine according to this invention. FIG. 4 is a cross-sectional explanatory diagram of a main part showing a second embodiment of an optical exposure device of a copying machine, FIG. 4 is a view taken from the direction indicated by the arrow in FIG. 3, and FIG. FIG. (Explanation of symbols) 1... Cavity, 2... Housing, 3... Copy original, 4... Platen, 5... High reflective surface, 6... Flash light source, 7... Imaging lens, 12...
Photosensitive surface, 20, 30... Shade, 21... Flat plate (blind part), 35... Blind member (
blind section).

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

略ボツクス状のキヤビテイを高反射面で囲繞し
且つ頂部に開口を有するハウジングと、このハウ
ジングの上記開口に装着されて複写原稿の載置面
を構成し且つ透過性部材で形成されたプラテンと
、上記ハウジング内に配設された光源と、この光
源の上方に配設されて前記光源からプラテンへ向
かう直射光を遮るシエードと、上記ハウジングの
底部に開設した孔に装着される結像レンズとを備
え、上記光源からの照射光によつてプラテン上の
複写原稿全面を略均一に照明し、上記複写原稿の
原像を上記結像レンズを介して所定の感光面に投
影するようにした複写機の露光装置において、上
記シエードの少なくとも一部を金属でブラインド
状に構成し、当該ブラインド部で上記シエードの
直上部位に向けて上記光源からの光を減衰透過さ
せるようにしたことを特徴とする複写機の露光装
置。 a housing that surrounds a substantially box-shaped cavity with a highly reflective surface and has an opening at the top; a platen that is attached to the opening of the housing to constitute a placement surface for a copy original and is formed of a transparent member; A light source disposed within the housing, a shade disposed above the light source to block direct light from the light source toward the platen, and an imaging lens attached to a hole formed at the bottom of the housing. A copying machine, wherein the entire surface of the copy document on the platen is substantially uniformly illuminated by the irradiation light from the light source, and the original image of the copy document is projected onto a predetermined photosensitive surface via the imaging lens. In the exposure apparatus, at least a part of the shade is made of metal in the form of a blind, and the light from the light source is attenuated and transmitted through the blind part toward a portion directly above the shade. exposure equipment of the machine.