JPS6190356U

JPS6190356U -

Info

Publication number: JPS6190356U
Application number: JP17511384U
Authority: JP
Priority date: 1984-11-20
Filing date: 1984-11-20
Publication date: 1986-06-12

Description

[Brief explanation of drawings]

第１図は本考案の実施例の概要図、第２図は第
１図の読取センサ１１の詳細図、第３図は第２図
を紙面に対して垂直方向から見た詳細図、第４図
は画像読取の際のタイムチヤート図、第５図は第
２図の光センサ２５の詳細断面図、第６図は第５
図の縁６３ｅと光応答時間との関係を示す図、第
７図は本考案の第２の実施例の概要図、第８図は
従来の画像読取装置の概要図である。１１…読取センサ、１２…光源、１４…集束性
レンズアレイ、１５…受光体、１６，６６…原稿
、１７…ローラ、２２…発光ダイオードアレイ、
２５…光センサ、５１…読取画像、５２…クロツ
クパルス、５３…発光パルス、５４…出力信号、
６１…透明基板、６２…透明電極、６３…感光部
、６４…表面保護膜、６５…金属電極。 FIG. 1 is a schematic diagram of an embodiment of the present invention, FIG. 2 is a detailed diagram of the reading sensor 11 shown in FIG. 1, FIG. 3 is a detailed diagram of FIG. The figure is a time chart during image reading, FIG. 5 is a detailed sectional view of the optical sensor 25 in FIG. 2, and FIG.
A diagram showing the relationship between the edge 63e of the figure and the optical response time, FIG. 7 is a schematic diagram of a second embodiment of the present invention, and FIG. 8 is a schematic diagram of a conventional image reading device. DESCRIPTION OF SYMBOLS 11... Reading sensor, 12... Light source, 14... Focusing lens array, 15... Photoreceptor, 16, 66... Document, 17... Roller, 22... Light emitting diode array,
25... Optical sensor, 51... Read image, 52... Clock pulse, 53... Light emitting pulse, 54... Output signal,
61...Transparent substrate, 62...Transparent electrode, 63...Photosensitive portion, 64...Surface protection film, 65...Metal electrode.

Claims

[Scope of Claim for Utility Model Registration] (1) An image reading device that performs scanning reading by illuminating the surface of a document, including a light emitting diode array arranged in a linear and elongated manner and focusing light emitted from the diodes on the surface of the document. a light-receiving sensor provided between the focusing means and the document surface and having a length approximately equal to the width of the object to be read and providing an electrical output corresponding to the light reflected from the document surface; An image reading device characterized in that light emitting diodes of a diode array are sequentially switched to emit light to illuminate a document surface, and the light receiving sensor receives reflected light from the document surface. (2) The image reading device according to claim 1, wherein the surface of the light receiving sensor facing the light emitting diode array is covered with a light-shielding metal electrode. (3) The image reading device according to claim 1, wherein the focusing means is a self-focusing lens. (4) The side wall of the light-receiving film of the light-receiving sensor is inclined to widen toward the document surface, and the angle of inclination is 30 to 7.
The image reading device according to claim 1, wherein the angle is 0°. (5) The image reading device according to claim 2, wherein the light-receiving sensor has an edge around the light-shielding metal electrode with a width of 50 μm or less that is not covered by the electrode.