JPS6279746U

JPS6279746U -

Info

Publication number: JPS6279746U
Application number: JP17262985U
Authority: JP
Priority date: 1985-11-08
Filing date: 1985-11-08
Publication date: 1987-05-21

Description

[Brief explanation of the drawing]

第１図は本考案に係る原稿読取装置の機構部の
一実施例を示す概略断面図、第２図は本考案に係
る原稿読取装置のブロツク構成図、第３図は動作
例を示すタイムチヤート、第４図は各タイミング
での原稿位置を示す概略図である。Ｐ_１，Ｐ_２，Ｐ_３……積載された原稿、Ｌ_１…
…分離ローラ、Ｌ_２……搬送ローラ、Ｍ１０……
パルスモータ、Ｓ_１……検出器の電源（ＬＥＤ）
、Ｓ_２……検出器（フオトトランジスタ）、Ｒ…
…読取位置、Ｌｐ……読取の光源（蛍光灯）、ｌ
_２……Ｓ_２〜Ｒ間距離、ｌ_２……Ｒ〜Ｌ_２間距離
、Ｌ_２′……搬送ローラのピンチローラ、１……
読取制御回路、２……早送りパルス発生回路、３
……搬送パルスＪ発生回路、４……搬送パルスＫ
発生回路、５……ＯＲ回路、６……モータ駆動回
路、７……パルス数記憶回路、８……一致検出回
路、９……計数回路、１００……モータ制御回路
。 FIG. 1 is a schematic cross-sectional view showing an embodiment of the mechanical part of the document reading device according to the present invention, FIG. 2 is a block diagram of the document reading device according to the present invention, and FIG. 3 is a time chart showing an example of operation. , FIG. 4 is a schematic diagram showing the document position at each timing. P ₁ , P ₂ , P ₃ ...Stacked originals, L ₁ ...
...Separation roller, _L2 ...Conveyance roller, M10...
Pulse motor, _S1 ...Detector power supply (LED)
, S ₂ ...detector (phototransistor), R...
...Reading position, Lp...Reading light source (fluorescent lamp), l
₂ ...Distance between _S2 and R, _l2 ...Distance between R and _L2 , L2 _' ...Pinch roller of conveyance roller, 1...
Reading control circuit, 2...Fast-forward pulse generation circuit, 3
...Carrying pulse J generation circuit, 4...Carrying pulse K
Generation circuit, 5...OR circuit, 6...Motor drive circuit, 7...Pulse number storage circuit, 8...Coincidence detection circuit, 9...Counting circuit, 100...Motor control circuit.

Claims

[Scope of claim for utility model registration] A separation roller that separates and feeds multiple stacked originals one by one, and a separation roller that transports and feeds the separated originals.
It has a conveyance roller that performs ejection, and during document reading,
In a document reading device such as a facsimile machine, in which the document is conveyed by the separation roller until the leading edge of the document reaches the conveyance roller, a pulse motor that simultaneously drives the separation roller and the conveyance roller; a pulse motor control circuit having means for supplying the pulse motor with two different numbers of pulses for one type of rapid feed pulse during ejection and one type of predetermined feed width during document reading; a reading control circuit having a control means for controlling which of the reading pulse and the two numbers of pulses to be supplied; and a reading control circuit connected to the reading control circuit and located between the document reading position and the separation roller. and a detector for detecting the leading edge and trailing edge of the original, and the conveying speed of the separation roller is adjusted so that the distance between the originals is large enough for the detector to detect the trailing edge and the leading edge of the original. If the conveyance speed is set lower than the conveyance speed of the conveyance roller and one of the two numbers of pulses is supplied, the separation roller can obtain an accurate feed amount while the document is conveyed, and if the other is supplied, the conveyance roller A document reading device characterized in that the interval between documents and the accurate feed amount during reading can be obtained by setting the feed amount to be accurate while conveying the document.