JPH0457965U

JPH0457965U -

Info

Publication number: JPH0457965U
Application number: JP10147090U
Authority: JP
Priority date: 1990-09-26
Filing date: 1990-09-26
Publication date: 1992-05-19

Description

[Brief explanation of the drawing]

第１，２図は本考案に係る原稿読取装置の一実
施例を示す図であり、第１図はその要部構成図、
第２図は第１図の白基準テープを貼つた部分の拡
大図である。第３図〜第８図は従来の原稿読取装
置を示す図であり、第３図はその要部構成図、第
４図は第３図の白基準テープが貼られた部分の拡
大図、第５図は第４図の白基準テープが読み取ら
れたときの出力波形を示す図、第６図はその他の
従来の原稿読取装置の要部構成図、第７図は第６
図の原稿読取装置における画像読取範囲と則白読
取範囲の関係を示す図、第８図は第７図の範囲で
読み取つたときの出力波形を示す図である。３１……原稿読取装置、３２……ケース、３３
……光源、３４……第１ミラー、３５……第２ミ
ラー、３６……第３ミラー、３７……レンズ、３
８……ＣＣＤ、３９……第１走行体、４０……第
２走行体、４１……コンタクトガラス、４２，４
３……白基準テープ。 1 and 2 are diagrams showing an embodiment of a document reading device according to the present invention, and FIG. 1 is a configuration diagram of its main parts;
FIG. 2 is an enlarged view of the portion of FIG. 1 where the white reference tape is pasted. Figures 3 to 8 are diagrams showing a conventional document reading device, with Figure 3 being a configuration diagram of its main parts, Figure 4 being an enlarged view of the part where the white reference tape in Figure 3 is pasted, 5 is a diagram showing the output waveform when the white reference tape in FIG. 4 is read, FIG.
FIG. 8 is a diagram showing the relationship between the image reading range and the white reading range in the document reading device shown in the figure, and FIG. 8 is a diagram showing the output waveform when reading in the range shown in FIG. 7. 31... Original reading device, 32... Case, 33
...Light source, 34...First mirror, 35...Second mirror, 36...Third mirror, 37...Lens, 3
8...CCD, 39...First running body, 40...Second running body, 41...Contact glass, 42,4
3...White reference tape.

Claims

[Scope of Claim for Utility Model Registration] A light source that projects light onto a document, an image reading device that receives light reflected from the document and converts it into electricity, and a group of mirrors that introduces the light reflected from the document into the image reading device. , the mirror group has a first mirror body and a second mirror body, the first mirror body introduces the reflected light from the document to the second mirror body, and the second mirror body introduces the light from the first mirror body. is introduced into the image reading means, and the light source and the first
The mirror body is mounted on the first traveling body, the second mirror body is mounted on the second traveling body, and the first traveling body and the second traveling body are differentially moved while maintaining a constant distance from the light source to the image reading means. In the document reading device, a white reference plate is disposed in a predetermined portion of the first traveling body that is irradiated with light projected from the light source;
A document reading device characterized in that a white reference plate moves together with the first traveling body.