JPH0221969U

JPH0221969U -

Info

Publication number: JPH0221969U
Application number: JP10077988U
Authority: JP
Priority date: 1988-07-29
Filing date: 1988-07-29
Publication date: 1990-02-14

Description

[Brief explanation of drawings]

第１図は本考案に係る平面走査スキヤナの原稿
読取を示す概略図である。１……移動光学台、２……原稿台、３……原稿
、４……副走査方向。第２図は本考案に係る平面走査スキヤナにおい
て第１図の次の原稿読取を示す概略図である。１……移動光学台、２……原稿台、７……原稿
、８……副走査方向。第３図は本考案に係る平面走査スキヤナにおけ
るメモリ回路の一実施例を示すブロツク構成図で
ある。９……メモリ、１０……主走査アドレスカウン
タ、１１……副走査アドレスカウンタ、１２……
副走査アドレスプリセツト値送出回路、１３……
画信号入力、１４……画信号出力、１５……画信
号クロツク、１６……画信号ラインイネーブル、
１７……書込、読出切換信号、１８……スキヤン
方向信号、１９……主走査アドレス、２０……副
走査アドレス、第４図は従来における平面走査スキヤナの原稿
読取を示す概略図である。１……移動光学台、２……原稿台、３……原稿
、４……副走査方向、５……移動光学台リターン
方向。 FIG. 1 is a schematic diagram showing document reading by a plane scanning scanner according to the present invention. 1...Moving optical table, 2...Original table, 3...Original, 4...Sub-scanning direction. FIG. 2 is a schematic diagram illustrating the next document reading from FIG. 1 in the plane scanning scanner according to the present invention. 1...Moving optical table, 2...Original table, 7...Original, 8...Sub-scanning direction. FIG. 3 is a block diagram showing one embodiment of a memory circuit in a plane scanning scanner according to the present invention. 9...Memory, 10...Main scanning address counter, 11...Sub-scanning address counter, 12...
Sub-scanning address preset value sending circuit, 13...
Image signal input, 14... Image signal output, 15... Image signal clock, 16... Image signal line enable,
17...Write/read switching signal, 18...Scan direction signal, 19...Main scanning address, 20...Sub-scanning address FIG. 4 is a schematic diagram showing document reading by a conventional plane scanning scanner. 1...Moving optical bench, 2...Original table, 3...Original, 4...Sub-scanning direction, 5...Moving optical bench return direction.

Claims

[Scope of utility model registration request]

In a plane scanning scanner in which a movable optical table with an optical reading element moves and scans a document placed on a document table, both ends of the document table can be scanned in the forward and reverse directions in the sub-scanning direction with each end set as the initial position. A plane scanning device characterized in that it has a movable optical bench, and a page memory including a sub-scanning address counter that can change the counting direction and preset value of the sub-scanning address counter when writing or reading sub-scanning in the reverse direction. Sukiyana's original reading device.