JPS6340445A - Manual system scanner - Google Patents

Abstract

PURPOSE:To put the thinning and straightforwardness into effect By providing driving wheels on both sides of a driving roller. CONSTITUTION:The driving wheels 22 are provided on both sides and are doubly brought into contact with an original surface 30. A reflected mirror 24 is provided Between an optical system lens 14 and a solid-state image pickup element 16. With changing the disposing position of the solid-state image pickup element 16 and a circuit substrate 18 for light-receiving a reflected ray B from the mirror 24, miniaturization is contrived. A case 20 is manually grasped and a couple of driving wheels 22 in the roller 2 are pressed to the original surface 30, whereby scan is executed. A rotary encoder 8 detects the rotary quantity of the driving roller 2 through a belt 10 which is wound to the driving roller 2 and pullys 4 and 6 of the encoder.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to an improvement in a manual scanner mechanism for sub-scanning having a roller mechanism and a sensor module for detecting the amount of rotation.

3. Conventional technology and problems to be solved Conventionally, this type of manual scanner is shown in FIG.

The structure was as shown in Figure 4. To explain the drawings below, there is a bearing at 1- of the document surface 30;
When scanning is performed by pressing the drive roller 2 connected to the pulley 4 via a shaft 7 rotatably supported by the case 20, the case 20 is grasped by hand and the circular drive roller 2 is rotated. A rotary encoder 8 rotatably supported by a bearing 5 and connected to a pulley 6 by a shaft 9 detects the amount of rotation of the roller 2 via a belt 10 that is wrapped around the drive roller 2 and the pulleys 4 and 6 of the encoder. The lens system 14. It is a mechanism that corrects the read image in synchronization with the information on the document surface obtained by the solid-state image sensor 16. In such a configuration, the diameter of the drive roller 2 and the light source 12. Lens system 14. Solid-state image sensor 169
Because the sensor module includes the circuit board 18 and the like, the thickness of the scanner device is defined.

For this reason, the shape of the drive roller 2, particularly its cylindrical shape, becomes an obstacle, making it difficult to make the manual scanner thin. Furthermore, due to the shape of the document surface 30 of the irradiated object, there is a possibility that contact deviation with the document surface 30 may occur during the rotation of the driving roller 2. Therefore, good straightness of this roller during rotation may be caused. It also had the disadvantage of not being able to hold.

C.9 Summary of the Invention The present invention has been made to solve these problems, and in order to make the manual scanner thinner and more straight-lineable, the roller is configured so that two surfaces can be contacted at both ends thereof. This is what I did.

2. Embodiment Hereinafter, an embodiment of a manual scanner according to the present invention will be described based on the accompanying drawings.

FIGS. 1 and 2 show embodiments of the structure of a manual scanner according to the present invention.

In the embodiment of the present invention, the structure that differs from that of the conventional example is the first drive roller, and in particular, instead of the cylindrical shape of the conventional example as shown in FIG.
2 nli contact with the document surface 30.

The second point is that a folding mirror 24 is provided between the optical system lens 14 and the solid-state image sensor 16, and the solid-state image sensor 16 and the circuit board 18 are connected to each other in order to receive the reflected light beam B from the mirror 24. The aim was to reduce the size by changing the installation position.

The rest of the structure is the same as that of the conventional example, and therefore the reference numerals used for the members used in the conventional example are also the same, so a description thereof will be omitted.

A pair of drive wheels 22 of the drive roller grip the case 20 with 1.
．． 22 is pressed against the document surface 30 and scanned, the belt 10 wrapped around the drive roller and the encoder pulleys 4 and 6 is pressed.
Rotary encoder 8 detects this rotation j11 of drive roller 2 via.

In the embodiment of the present invention, an optical system is disposed in the gap between the drive roller 2 and the seven two drive wheels 22.22 on both sides, and the light B from the light source 12 is irradiated onto the document surface 30, and this reflected light is lens 1
4, the optical path is further deflected by 90 degrees by a folding mirror 24, and guided to the solid-state image sensor 16. At the same time, the circuit board 18 is also configured not to be restricted in the thickness direction. As another embodiment, if a protrusion 26 is provided on a part of the lower surface of the case 20 so that the document surface 30 is rotated together with the rotation of the drive wheels 22 at both ends of the rotary roller 2, the document surface 30 and Since it is possible to make multiple contacts, it also has the advantage of being able to maintain a constant clearance with the document surface.

E. Effects As explained above, the drive roller of the present invention is configured to have two surfaces in contact with the irradiated object, and a space for installing the optical system is provided, so that the manual scanner can be made thinner. There are effects such as smooth straightness in the scanning direction, and the ability to maintain good clearance with the surface of the document, which is the object to be irradiated.

[Brief explanation of drawings]

FIG. 1 is a front view of one embodiment of the manual scanner mechanism according to the present invention, with one side of the case removed. Second
The figure is a side view seen in the X direction of FIG. FIG. 3 is a front view of a conventional manual scanner with one side of the case removed. FIG. 4 is a side view seen in the direction of arrow Y in FIG. 3. 2... Drive roller, 4... Drive roller pulley, 6...
...Encoder pulley, 8...Rotary encoder,
16... solid-state image sensor, 18... circuit board, 20...
...Case, 22...Drive wheel, 24...Folding mirror, 26...Protrusion Patent applicant Copal Electronics Co., Ltd. and one other representative Patent attorney Sakae Kobayashi Ii1 Figure Crane 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. It has a drive roller that is rotatable on the irradiated object, an angle detection mechanism that detects the amount of operation of the drive roller, and an optical system that forms an image of the light reflected at the detection point of the irradiated object. A manual scanner characterized in that drive wheels are provided on both sides of a drive roller. 2. Claim 1 in which a folding mirror is provided between the solid-state image sensor and the lens through which the light reflected at the detection point passes.
Manual scanner as described in section. 3. The manual scanner according to claim 1, wherein the lower surface of the case is provided with a protrusion that is rotatable above the object to be irradiated.