JPS60149272U

JPS60149272U - 1x scanner

Info

Publication number: JPS60149272U
Application number: JP3519984U
Authority: JP
Inventors: 宮沢　秀幸
Original assignee: 株式会社リコー
Priority date: 1984-03-14
Filing date: 1984-03-14
Publication date: 1985-10-03
Also published as: JPH04609Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は等倍スキャナの従来例を示したブロック図、第
２図は本考案の一実施例を示したブロック図、第３図ａ
−１は第２図の要部動作を示した波形図である。１・・・読取ヘッド、２・・・読取ヘッド駆動部、３・
・・クロックジェネレータ、４・＝□・アドレスカウン
タ、２１・・・タイミングジェネレータ、２２・・・ゲ
ート回路、２３・・・インバータ、ＡＳＩ、ＡＳ２・・
・アナログスイッチ、ＤＲ１１〜ＤＲｌ　４・・・クロ
ックトライバ、ＰＨ１〜ＰＨ４・・・ピークホールド回
路、ＳＡ　ｉｌ、５Ａ１２・・・シェーディング補正回
路。Fig. 1 is a block diagram showing a conventional example of a same-size scanner, Fig. 2 is a block diagram showing an embodiment of the present invention, and Fig. 3 a.
-1 is a waveform diagram showing the operation of the main part of FIG. 2; DESCRIPTION OF SYMBOLS 1...Reading head, 2...Reading head drive part, 3.
・・Clock generator, 4・=□・Address counter, 21・・Timing generator, 22・・Gate circuit, 23・・Inverter, ASI, AS2・・
- Analog switch, DR11 to DRl 4... Clock driver, PH1 to PH4... Peak hold circuit, SAil, 5A12... Shading correction circuit.

Claims

[Scope of utility model registration request]

A plurality of line image sensors are arranged in a staggered manner, and the output signal of each line image sensor is corrected for shading, and the signal of the line image sensor whose reading position is ahead is delayed by a predetermined number of lines to correspond to one reading line. a first selection means for selecting an output signal of one line image sensor from a first group consisting of those having a preceding reading position among the plurality of line message sensors in the same-magnification scanner that outputs an image signal; , a second selection means for selecting an output signal of one line image sensor from a second group consisting of the plurality of line image sensors other than those having the preceding reading position;
and first and second shading correction means for shading correction of the output signal of the second selection means,
The plurality of line image sensors are sequentially started to be driven at a predetermined timing, and when any of the line image sensors forming the first group is being driven, the second switching means is actuated, and the second switching means is activated. A full-size scanner, characterized in that the first switching means is activated when any one of the line image sensors forming the group is being driven.