JPS6281164A - Optical information reader - Google Patents

Abstract

PURPOSE:To read the information on the front and rear sides of a document by a photoelectric converting element by moving the photoelectric converting element and a lens to a prescribed position synchronously with the feeding direction of the document. CONSTITUTION:The document 12 is fed from a document insertion slit 11 by a roller 13, the feeding roller 13 is reversed after the document 12 passes through a read position P, the carrying path is changed over by a switching plate 14 and the document is stacked in a stacker 15. When the carrying direction of the document 12 is (a), the read reflected light irradiated by a light source 16 at the point P is reflected in a mirror 17 and enters a lens 18, where the light is converged and read by the photoelectric converting element 19. After the document 12 passes through the point P, a read sensor section 20 comprising the lens 18 and the photoelectric converting element 19 moves from the position A to the position B, the document 12 carried reversely in the direction (b) receives the light from the light source 21, the read reflected light is reflected in a mirror 22 and enters the lens 18, where the light is converged and read by the photoelectric converting element 19.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an optical information reading device, and particularly to an optical information reading device that can read information on the front and back sides of a form with a single photoelectric conversion element.

[Background of the invention]

The conventional device, as described in Japanese Patent Application Laid-Open No. 57-57380 (5), places photoelectric conversion elements on both sides of a form, illuminates the form from both sides with a light source, and scans the form.
It was structured to read the information on the front of the form. This method involves illuminating the form from a light source 1.2 as shown in Figure 3.
With the photoelectric conversion elements 3 and 4, information on the front and back sides can be easily read at once. However, it was expensive because it required two photoelectric conversion elements.

[Purpose of the invention]

An object of the present invention is to provide an optical information reading device that can read information on the front and back sides of a form using a single photoelectric conversion element.

[Summary of the invention]

According to the present invention, photoelectric conversion elements and lenses are moved in a predetermined manner in synchronization with the feeding direction of the form so that information can be read from one side when the form is carried in the forward direction and information from the other side when the paper is carried in the reverse direction. This is an optical information reading device that has been moved to the position shown below.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIG. When the form 12 is set in the form insertion slot 11.

The form 12 is sent to the feed roller 13. After the form 12 passes the reading position (point P), the feed roller 13 rotates in the opposite direction and the switching plate 1
4, the transport path of the form is switched and the form is stacked on the stacker 15.

Here, when the conveyance direction of the form 12 is in the direction of arrow a, the reading reflected light irradiated to the light source 16 at point P is as follows.

It is reflected by the mirror 17, enters the lens 18, and is focused.

It is read by the photoelectric conversion element 19. After the form 12 passes point P, the reading sensor unit 20 consisting of the lens 18 and the photoelectric conversion element 19 moves from position A shown by the solid line to 8 positions shown by the broken line, and the feed roller 13 rotates in the opposite direction in the direction of the arrow. Form 12
is transported. The form 12 that has been transported in the reverse direction is irradiated by a light source 21 and the reflected light is read.

The light is reflected by the mirror 22, enters the lens 18, is focused, and is read by the photoelectric conversion element 19.

Further, FIG. 2 shows an embodiment in which the reading sensor section 20 rotates in synchronization with the conveying direction of the form 12.

In this way, the reading sensor section 20 moves or rotates in synchronization with the conveyance direction of the form I2, thereby reading information on both the front and back sides of the form 12.

〔Effect of the invention〕

According to the present invention, information on the front and back sides of a form can be read with one photoelectric conversion element, which has the effect of reducing costs.

[Brief explanation of drawings]

FIG. 1 and the first plan are cross-sectional views showing one embodiment of the present invention;
FIG. 3 is a sectional view of the conventional method. 1.2... Light source, 3.4... Photoelectric conversion element. 5.6...Mirror, 7.8...Lens. 11... Insert a form 0.12... 1 bill. 13... Form feed roller, 14... Switching plate. 15... stacker, 16, 21... light source. 17, 22...mirror, 18...lens. 19... Photoelectric conversion element, 20... Reading sensor section. (°) ゛+−−shi′

Claims (1)

[Claims] 1. In an optical information reading device that consists of a paper feeding means for conveying a form, a photoelectric conversion element, a lens, and a light source and reads information on both the front and back sides of a form, the photoelectric conversion element and lens are An optical information reading device characterized by being provided with means for moving or rotating to a predetermined position.