JPH0210664U

JPH0210664U -

Info

Publication number: JPH0210664U
Application number: JP8865388U
Authority: JP
Priority date: 1988-07-04
Filing date: 1988-07-04
Publication date: 1990-01-23

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す画像読取装
置を一部を断面にして示す正面図、第２図は同じ
くその平面図、第３図は第１図の走行部材１７の
内部を示す概略構成図、第４図は第１図のカム４
３Ａ及び４３Ｂを拡大して示す正面図、第５図は
原稿面に段差のある原稿の画像を読み取る場合の
操作手順を説明するための概略構成図、第６図は
光集束光学系２１と原稿面及びイメージセンサ２
３との関係を簡略化して示す説明図、第７図は光
集束光学系２１と原稿の読取画像面との位置関係
のずれとレスポンス係数ＭＴＦとの関係を示す線
図、第８図は従来の走行部材を走行させながら原
稿の画像を順次読み取る画像読取装置の一例を示
す斜視図である。１５……装置本体、１６……原稿台ガラス、１
６ａ……上面、１６ｂ……下面、１７……走行部
材、１８……ランプ、１９……ミラー、２０……
原稿台ガラス昇降手段、２１……光集束光学系、
２２……ミラー、２３……イメージセンサ、３８
……ガラス支持軸、３８ａ……スプリング受け、
４１……昇降ガイド、４２……スプリング、４３
Ａ，４３Ｂ……カム、Ｄ……原稿。 FIG. 1 is a partially sectional front view of an image reading device showing an embodiment of this invention, FIG. 2 is a plan view thereof, and FIG. 3 is a view showing the inside of the traveling member 17 of FIG. 1. Schematic configuration diagram, Figure 4 shows the cam 4 in Figure 1.
3A and 43B are enlarged front views, FIG. 5 is a schematic configuration diagram for explaining the operating procedure when reading an image of a document with a step on the document surface, and FIG. 6 is a diagram showing the light focusing optical system 21 and the document. Surface and image sensor 2
FIG. 7 is a diagram showing the relationship between the displacement of the positional relationship between the light focusing optical system 21 and the scanned image surface of the document and the response coefficient MTF, and FIG. 8 is a diagram showing the relationship between the conventional 1 is a perspective view showing an example of an image reading device that sequentially reads images of a document while running a traveling member; FIG. 15...Device main body, 16...Original table glass, 1
6a...Top surface, 16b...Bottom surface, 17...Travel member, 18...Lamp, 19...Mirror, 20...
Document table glass elevating means, 21... light focusing optical system,
22...Mirror, 23...Image sensor, 38
...Glass support shaft, 38a...Spring receiver,
41... Lifting guide, 42... Spring, 43
A, 43B...cam, D...manuscript.

Claims

[Scope of Claim for Utility Model Registration] Images of a document set on a document table glass attached to the main body of the apparatus are sequentially transferred while a traveling member having a built-in document image reading means runs along the lower surface of the document table glass. An image reading device for reading images, characterized in that the document table glass is attached to the device main body via a document table glass lifting means that adjusts a distance between the document table glass and the traveling member.