JPH0427453U

JPH0427453U -

Info

Publication number: JPH0427453U
Application number: JP6756790U
Authority: JP
Priority date: 1990-06-26
Filing date: 1990-06-26
Publication date: 1992-03-04

Description

[Brief explanation of the drawing]

第１図Ａは実施例の露光台シヤツターの側面図
、第１図Ｂはその平面図、第２図はこの露光台シ
ヤツターを備えた複写機の全体構成を示す断面図
、第３図はその制御系の概略構成を示すブロツク
図である。１……複写機、２……原稿台ガラス、３……原
稿、４……原稿台カバー、５……光源部、６……
ミラー部、８……投影レンズ、９……フイルタ、
１１……露光台、２０……露光台シヤツター、２
２……吊り上げバネ、２３……ゴムローラ、２４
……シヤツター板、２５……引き上げバネ、２６
……ラツク、２７……ピニオンギヤ、２３ａ，２
７ａ……プーリ、２８……タイミングベルト、３
０……光学系スキヤニングモータ、４０……シー
ト搬送モータ、５０……マイクロコンピユータ、
ＭＳ……マイクロカプセルシート、ＫＳ……顕色
紙、Ｌ……光路、ＳＲ……ソレノイド。 FIG. 1A is a side view of the exposure platform shutter of the embodiment, FIG. 1B is a plan view thereof, FIG. 2 is a sectional view showing the overall configuration of a copying machine equipped with this exposure platform shutter, and FIG. FIG. 2 is a block diagram showing a schematic configuration of a control system. 1... Copying machine, 2... Document glass, 3... Original, 4... Document platen cover, 5... Light source section, 6...
Mirror section, 8...projection lens, 9...filter,
11...Exposure table, 20...Exposure table shutter, 2
2... Lifting spring, 23... Rubber roller, 24
... Shutter plate, 25 ... Lifting spring, 26
...Rack, 27...Pinion gear, 23a, 2
7a...Pulley, 28...Timing belt, 3
0... Optical system scanning motor, 40... Sheet conveyance motor, 50... Microcomputer,
MS...Microcapsule sheet, KS...Color developing paper, L...Light path, SR...Solenoid.

Claims

[Scope of Claim for Utility Model Registration] Optical imaging means for forming an image of reflected light of a predetermined width from a document obtained by scanning while moving along a document table onto an exposure table as image information; An exposure stand of a copying machine comprising a sheet that stores the image information while being conveyed along the stand, and a light shielding member that is driven when exposure is completed to close the optical path from the optical imaging means to the upper surface of the sheet. The shutter includes: a signal generating means for generating a signal at the end of exposure; a rotating member that is brought into close contact with the upper surface of the sheet and rotated by frictional force when the signal is generated; and a biasing member that biases the light shielding member in the direction of opening the optical path. and a moving means for moving the light shielding member in the optical path closing direction against the biasing force of the biasing member, the light shielding member being moved by transmitting the rotational force of the rotating member to the moving means. An exposure table shutter for a copying machine, characterized in that the exposure table is moved in the optical path closing direction.