JPH01177657U

JPH01177657U -

Info

Publication number: JPH01177657U
Application number: JP6878688U
Authority: JP
Priority date: 1988-01-27
Filing date: 1988-05-26
Publication date: 1989-12-19

Description

[Brief explanation of the drawing]

第１図ないし第４図は本考案の請求項(1)記載
の実施例を示し、第１図は原稿読取ケース２の各
情報に関する位置マークの一例図、第２図は検出
用ゲート出力波形図、第３図は基準濃度の設置を
示す一例図、第４図は位置マークの取替機構例図
、第５図、第６図は本考案の請求項(2)記載の実
施例を示し、第５図は原稿固定型スキヤナに基準
斜め線を設けた一例、第６図は絵ずれ検出回路の
ブロツク図、第７図は複写機１にＡＤＦ装置４を
搭載した要部の断面構造例図、第８図は従来の原
稿読取ケース２の一例を示す斜視外観図、第９図
は第８図のＡ部の拡大図、第１０図は第８図の原
稿読取ケース２の裏面図、第１１図は原稿固定型
のスキヤナによる絵ずれの説明図、第１２図は走
行体の副走査方向へのずれ発生の説明図である。１……複写機、２……原稿読取ケース、３……
原稿、４……ＡＤＦ装置、５，５Ａ……ローラ、
６……蛍光灯、７……ミラー、８……レンズ、９
……ＣＣＤ、１０，１２，１３……色帯、１１，
１６……検出ゲート出力、１４……検出用ゲート
、１５……白から灰（黒）のアナログ値、１７…
…表示板、１８……光量、２０……上ケース、２
１……突き当板、２２……ＡＤＦ読取窓、２３…
…ＢＯＯＫ読取面、２４，２７……原点マーク、
２５……側白読取エリア、２６……ホームポジシ
ヨンマーク、２８……シエーデイング位置マーク
、２９……読取開始マーク、２０Ａ，２０Ｂ，２
０Ｃ……原稿サイズマーク、３０……ライン同期
信号、３１……非センス時、３２……マークセン
ス時、３３……各マーク検出用ゲート出力、３４
……ＣＣＤアナログ出力、３５……ガイドロツド
、３６……走行体、３７……ずれ、３８……原稿
読取領域、３９……基準斜め線、４０……斜め線
基準パターン、４１……絵ずれ検出器、４２……
画素データ、４３……絵ずれ検知信号。 1 to 4 show an embodiment according to claim (1) of the present invention, FIG. 1 is an example of a position mark regarding each information on the document reading case 2, and FIG. 2 is a detection gate output waveform. Fig. 3 shows an example of setting the reference concentration, Fig. 4 shows an example of a position mark replacement mechanism, and Figs. 5 and 6 show an embodiment according to claim (2) of the present invention. , FIG. 5 is an example of a fixed document scanner with a reference diagonal line, FIG. 6 is a block diagram of an image shift detection circuit, and FIG. 7 is an example of the cross-sectional structure of the main part of a copying machine 1 equipped with an ADF device 4. 8 is a perspective external view showing an example of the conventional document reading case 2, FIG. 9 is an enlarged view of section A in FIG. 8, and FIG. 10 is a back view of the document reading case 2 shown in FIG. FIG. 11 is an explanatory diagram of image deviation caused by a scanner of fixed document type, and FIG. 12 is an explanatory diagram of occurrence of displacement of a traveling body in the sub-scanning direction. 1... Copy machine, 2... Original reading case, 3...
Original, 4...ADF device, 5,5A...roller,
6...Fluorescent lamp, 7...Mirror, 8...Lens, 9
...CCD, 10,12,13...Color band, 11,
16...Detection gate output, 14...Detection gate, 15...Analog value from white to gray (black), 17...
...Display board, 18...Light amount, 20...Upper case, 2
1...Abutting plate, 22...ADF reading window, 23...
...BOOK reading surface, 24, 27...Origin mark,
25...Side white reading area, 26...Home position mark, 28...Shading position mark, 29...Reading start mark, 20A, 20B, 2
0C...Document size mark, 30...Line synchronization signal, 31...When not sensed, 32...When mark sensed, 33...Gate output for each mark detection, 34
... CCD analog output, 35 ... Guide rod, 36 ... Traveling object, 37 ... Misalignment, 38 ... Original reading area, 39 ... Reference diagonal line, 40 ... Diagonal line reference pattern, 41 ... Image deviation detection Vessel, 42...
Pixel data, 43...Picture shift detection signal.

Claims

[Scope of Claim for Utility Model Registration] (1) Various information necessary for document reading is marked on the side edge of the back side of the document reading case of a copying machine, etc., and various mark detection gate outputs are obtained at locations corresponding to the mark positions. An image reading device characterized in that a carriage is positioned in a sub-scanning direction using a slider. (2) A reference diagonal line is provided in the sub-scanning direction of the carriage outside the document reading area, and when the scanner scans the document line by line, the reference diagonal line is first read and compared with a pre-prepared diagonal line reference pattern to identify any discrepancies. 2. The image reading device according to claim 1, wherein the image reading device detects the image shift and eliminates the image shift.