JPS628757U

JPS628757U -

Info

Publication number: JPS628757U
Application number: JP9931385U
Authority: JP
Priority date: 1985-06-29
Filing date: 1985-06-29
Publication date: 1987-01-20

Description

[Brief explanation of the drawing]

第１図乃至第５図は本考案の一実施例における
原稿読取装置を説明するためのもので、第１図は
同装置の要求構成を示す斜視図、第２図乃至第５
図はそれぞれ同装置の動作説明に使用する主要部
分の側断面図、第６図乃至第８図ａ，ｂは本考案
の他の実施例における原稿読取装置を説明するた
めのもので、第６図は同装置の要部構成を示す側
断面図、第７図は受光信号の検出回路の構成を示
す図、第８図ａ，ｂはそれぞれ動作説明に使用す
るタイミング図、第９図は原稿静止形の原稿読取
装置の概略構成を示す側断面図である。２０……原稿台、２１，２２……ガイド、２１
ａ，２２ａ……スリツト、２３……発光器、２４
……受光素子、２５……検出光、４０，４０……
原稿、５０……原稿カバー、５０ａ……溝。 1 to 5 are for explaining a document reading device according to an embodiment of the present invention. FIG. 1 is a perspective view showing the required configuration of the device, and FIGS.
The figures are side sectional views of the main parts used to explain the operation of the device, and FIGS. The figure is a side sectional view showing the configuration of the main parts of the device, Figure 7 is a diagram showing the configuration of the detection circuit of the light reception signal, Figures 8a and b are timing diagrams used to explain the operation, and Figure 9 is the original document. FIG. 1 is a side sectional view showing a schematic configuration of a stationary document reading device. 20...Original table, 21, 22...Guide, 21
a, 22a...Slit, 23...Light emitter, 24
... Light receiving element, 25 ... Detection light, 40, 40 ...
Original, 50... Original cover, 50a... Groove.

Claims

[Claims for Utility Model Registration] (1) A reading scanning section is arranged below a translucent document table, and by moving this reading scanning section, the document set on the document table is read and scanned. In the document reading device, a light emitter is provided on one of two opposing sides of the document table, and the other side receives detection light generated from the light source and passed on the document table along the document placement surface. What is claimed is: 1. A document reading device comprising: a light receiver, and determining means for determining the presence or absence of a document on the document table based on the received light output of the light receiver. (2) A document reader according to claim (1) of the utility model registration claim, characterized in that a slit is provided on at least one of the light emitter installation side and the light receiver installation side to form a detection light that is blocked by the document. Device. (3) The light receiver is composed of a plurality of light-receiving elements, and these light-receiving elements are arranged at predetermined intervals, and the presence or absence of a document, as well as the size or set position of the document, is determined from the light reception output of these light-receiving elements. A document reading device according to claim (1) of the utility model registration claim, characterized in that: