JPH04123458U - optical reader - Google Patents

Abstract

(57) [Summary] [Structure] The running plate 12, which serves as a path for the paper sheet 20 having an image screen to be read, passes through the reading station 11 of the image sensor 10 and is sent out, is connected to a guide plate 13 on the entrance side. and,
A gap about the thickness of the paper sheet 20 is formed between the guide plate 16 on the exit side and the reading surface of the image sensor 10 at the reading area 11 in the center, and the plane on the entrance side is at an angle with the plane of the reading area 11. Bend at θ. The paper sheet 20 inserted between the running plate 12 and the guide plate 13 is fed by the drive roller 14, collides with the image sensor 10 just before the reading station 11, and comes into pressure contact with the reading surface of the image sensor 10 while exiting. The liquid reaches the drive roller 17 and is delivered to the exit. [Effect] Since the pressure roller that presses against the image sensor surface can be removed, there is less dust adhesion due to static electricity caused by abrasion and friction with the roller, and it is possible to avoid misreading and poor conveyance, and eliminate the need for fine adjustments. .

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is an OA (Office Automation) machine that handles paper sheets. An image sensor captures images (figures, images, etc.) on paper sheets using light. The present invention relates to an optical reading device for reading data.

0002

[Conventional technology]

Conventionally, this type of optical reading device uses an image sensor to read from the surface of the paper sheet. At the reading station, paper sheets are pressed against the image sensor using a pressure roller and run at the reading speed. I was letting him go.

0003 This will be explained with reference to FIG. Figures 2 (A) and (B) show an example of the conventional FIG. 2 is a front view and a perspective view.

0004 As shown in the figure, the image sensor 30 is located at a reading site 31 for reading images. Due to the pressing force of the sensor spring 32, the sensor is pressed against the pressure roller 34 around the sensor fulcrum 33. Ru.

[0005] The paper sheet 20 is inserted into the gap formed by the running plate 41 and the guide plate 42, and is roller 45 and a driven roller 46 that contacts this drive roller 45 with the pressing force of a spring. It is then fed in as the drive roller 45 rotates.

[0006] The running board 41 runs the paper sheet 20 to the reading station 31 and sneaks under the pressure roller 34. At the same time, the guide plate 42 prevents the paper sheets 20 from floating up.

[0007] At the reading station 31, when the pressure roller 34 takes in the paper sheet 20, the image sensor The sensor 30 rotates around the sensor fulcrum 33 against the elastic pressure of the sensor spring 32 to support the paper sheet 2. By rotating by the thickness of 0, the sheet 20 is held down against the pressure roller 34. and send it toward the exit.

[0008] On the exit side, it enters the gap created by the running plate 43 and the guide plate 44, and is driven in the same way as on the entrance side. The paper sheet 20 is discharged by the roller 47 and the driven roller 48.

[0009]

[Problem that the idea aims to solve]

The above-mentioned conventional optical reading device uses an image sensor as the reading site, and detects the presence of paper sheets. It has a structure in which it is pressed against the pressure roller by the pressing force of the sensor spring regardless of the Therefore, dust is generated due to static electricity generated by wear and friction caused by the rotation of the pressure roller. The problem is that the image adheres to the reading surface of the sensor, causing misreading and poor conveyance. The problem is that it is necessary to finely adjust the pressure force applied to the pressure roller of the image sensor, which is time-consuming. was there.

0010 The purpose of this invention is to generate pressing force on the paper sheet itself at the image sensor reading area. A structure is provided in which paper sheets are inserted and ejected on this running board. Accordingly, it is an object of the present invention to provide an optical reading device that solves the above problems.

[0011]

[Means to solve the problem]

The optical reading device according to the present invention reads images (figures, images, etc.) on the surface of paper sheets. In an optical reader (OCR) that an image sensor optically reads, The screen of the paper sheet is read by the image sensor at the reading station where the image sensor reads the screen of the paper sheet. A bent running plate that is brought in at an angle θ in close contact with the image sensor, The paper sheet is sandwiched between the running plate and the gap where the drive roller runs is created just before the reading station. It has a guide plate formed up to.

0012

【Example】

Next, the present invention will be explained with reference to the drawings. Figures 1 (A) and (B) are the invention FIG. 2 is a front view and a perspective view showing one embodiment of the invention.

[0013] As shown in the figure, the image sensor 10 reads the screen to be read from the paper sheet 20. At the reading station 11, it is combined with a running plate 12 having a gap equal to the thickness of the paper sheet 20. It will be done.

[0014] The running plate 12 is bent at an angle θ with respect to the plane of the reading field 11, and this bent surface has a The guide plate 13 is arranged with a gap through which the paper sheet 20 can pass.

[0015] When the paper sheet 20 enters the gap between the running plate 12 and the guide plate 13, it rotates at a predetermined speed. a driving roller 14, and a driven roller pressed against the driving roller 14 by a spring. The contact surface (line) with 15 is reached.

[0016] The driving roller 14 takes in the paper sheet 20 at the contact surface with the driven roller 15 and transfers it to the reading area 1. Send to 1.

[0017] The angle θ is such that the fed paper sheet 20 hits the reading surface of the image sensor 10. , is the angle at which it can move toward the exit while contacting this reading surface.

[0018] Paper sheets 20 that have passed through the reading station 11 pass through the gap between the guide plate 16 on the exit side and the running plate 12. It is sandwiched between a driving roller 17 and a driven roller 18, which have the same structure as the entrance side. It is discharged from the exit.

[0019]

[Effect of the idea]

As explained above, the present invention optically reads the running board on which paper sheets run. The paper sheets are bent in front of the reading area and fed into the sensor while always maintaining the angle θ. By placing the sensor in the It has the effect of being able to transport empty paper sheets.

[Brief explanation of drawings]

FIG. 1 is a front view and a perspective view showing an embodiment of an optical reading device of the present invention.

FIG. 2 is a front view and a perspective view of a conventional example.

[Explanation of symbols]

10 Image sensor 11 Reading area 12 Running board 13,16 Information board 14, 17 Drive roller 15, 18 Followed roller 20 Paper leaves

Claims (1)

[Scope of utility model registration request] [Claim 1] Image (figure, image, etc.) on paper sheet surface
In an optical reading device (OCR) in which an image sensor optically reads the paper sheet, the screen of the paper sheet is brought into close contact with the image sensor at an angle θ at a reading field where the image sensor reads the screen of the paper sheet. A running board,
An optical reading device characterized in that it has a guide plate that forms a gap between the running plate and the paper sheet and allowing the sheet to be run by a drive roller up to the vicinity of the reading station.