JPH0210666U

JPH0210666U -

Info

Publication number: JPH0210666U
Application number: JP8850988U
Authority: JP
Priority date: 1988-07-05
Filing date: 1988-07-05
Publication date: 1990-01-23

Description

[Brief explanation of drawings]

第１図は本考案に係る原稿読取装置の一例の説
明略図、第２図は第１図の−断面図、第３図
は第１図の読取位置付近の部分拡大説明図、第４
図は第３図の平面部分説明図、第５図は原稿読取
装置の問題点を説明する説明図、第６図は本考案
の一実施例を示す説明図、第７図は従来の装置の
読取位置における原稿の状態を説明する図で、第
７図ａはカールした原稿の先端、第７図ｂはカー
ルした原稿の後端、第７図ｃは折り目原稿の状態
を示す図である。５，６，７……搬送ローラ（原稿搬送手段）、
８，９，１０……押えローラ（原稿搬送手段）、
１１……コンタクトガラス（原稿台）、１２……
読取位置、１３……照明ランプ（原稿照明手段）
、１４……バツクアツプローラ、１５……レンズ
（原稿読取手段）、１６……ＣＣＤ（原稿読取手
段）。 FIG. 1 is a schematic illustration of an example of a document reading device according to the present invention, FIG. 2 is a cross-sectional view taken from FIG.
The figure is an explanatory plan view of a portion of FIG. 3, FIG. 5 is an explanatory diagram illustrating the problems of the document reading device, FIG. 6 is an explanatory diagram showing an embodiment of the present invention, and FIG. 7 is an explanatory diagram of the conventional device. 7A is a diagram illustrating the state of a document at the reading position, FIG. 7A is a diagram showing a curled leading edge of the document, FIG. 7B is a diagram showing a curled rear end of the document, and FIG. 7C is a diagram showing a state of a folded document. 5, 6, 7... Conveyance roller (document conveyance means),
8, 9, 10...presser roller (document transport means),
11...Contact glass (original table), 12...
Reading position, 13...Illumination lamp (document illumination means)
, 14...backup roller, 15...lens (original reading means), 16...CCD (original reading means).

Claims

[Scope of Claim for Utility Model Registration] A transparent document table, a document conveyance means for conveying the document so as to pass along the document table, and an illumination means for illuminating the document as it passes through the document table;
A document reading device having a document reading means for reading light reflected from the document in the document reading area by the illumination device, which has a rotating shaft in the main scanning direction facing the document table in the document reading area, and has a rotating shaft in the main scanning direction; It has a back-up roller whose surface rotates at a predetermined distance from the document table, and the document conveyance means are arranged upstream and downstream of the back-up roller in the document conveyance direction, respectively. A document reading device characterized in that the length from the document conveying means to the downstream document conveying means is set to be shorter than the minimum length of the document to be read in the conveyance direction.