JPH0195864U

JPH0195864U -

Info

Publication number: JPH0195864U
Application number: JP19227487U
Authority: JP
Priority date: 1987-12-17
Filing date: 1987-12-17
Publication date: 1989-06-26

Description

[Brief explanation of the drawing]

第１図〜第６図は本考案の画像読取装置を適用
したスキヤナの一実施例を示す図であり、第１図
はその駆動機構の斜視図、第２図はその駆動機構
の正面部分断面図、第３図はその駆動機構の従動
側の軸受部の斜視図、第４図はその駆動機構の従
動側軸受部の拡大断面図、第５，６図はその作用
説明図である。第７図〜第１２図は従来の画像読
取装置を示す図であり、第７図はその駆動機構の
斜視図、第８図はその駆動機構の正面図、第９図
はその駆動機構の上面図、第１０図ａ，ｂおよび
第１１図ａ，ｂはその作用説明図、第１２図はそ
の読取画像を示す図である。２１……キヤリツジ、２２……光学ユニツト、
｛２３……ガイドシヤフト、２４ａ，２４ｂ……
従動軸｝（ガイド部材）、２５……タイミングベ
ルト（駆動部材）、２８……駆動モータ、２９…
…軸受、３０，３１……支持軸、３２，３３……
軸受。 1 to 6 are diagrams showing an embodiment of a scanner to which the image reading device of the present invention is applied. FIG. 1 is a perspective view of its drive mechanism, and FIG. 3 are perspective views of the driven side bearing portion of the drive mechanism, FIG. 4 is an enlarged sectional view of the driven side bearing portion of the drive mechanism, and FIGS. 5 and 6 are explanatory views of the operation thereof. 7 to 12 are views showing a conventional image reading device, in which FIG. 7 is a perspective view of the drive mechanism, FIG. 8 is a front view of the drive mechanism, and FIG. 9 is a top view of the drive mechanism. Figures 10a and 10b and 11a and 11b are explanatory diagrams of the operation, and Figure 12 is a diagram showing the read image. 21...carriage, 22...optical unit,
{23... Guide shaft, 24a, 24b...
Driven shaft} (guide member), 25... Timing belt (drive member), 28... Drive motor, 29...
... Bearing, 30, 31 ... Support shaft, 32, 33 ...
bearing.

Claims

[Scope of Claim for Utility Model Registration] (1) A carriage equipped with an optical unit for main-scanning an image of a document, a guide member extending in the sub-scanning direction and slidably supporting both sides of the carriage, and a guide member for slidingly supporting both sides of the carriage. An image reading device that includes a drive member fixed to one end side and extending in the sub-scanning direction, and a drive motor that moves the drive member in the sub-scanning direction to scan the carriage in the sub-scanning direction. In the apparatus, a support shaft is provided at the end of the side opposite to the driving member of the carriage, a bearing rotatably supported is attached to the support shaft, and the carriage is supported by the guide member via the bearing. An image reading device characterized by: (2) The image reading device according to claim 1, wherein two of the support shafts are arranged side by side at a predetermined interval in the sub-scanning direction, and the bearings are attached to each of the support shafts. (3) The support shaft is formed to protrude below the carriage, and the guide member on the support shaft side is formed by two guide shafts that sandwich the bearing of the support shaft from the outside and the inside of the carriage end. An image reading device according to claim 1 or 2 of the utility model registration claim.