JPH0418285Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an image reading device that reads an image of a document by manually scanning the document.

[Conventional technology]

In recent years, image reading and recording devices have been developed that use a reading window equipped with a transparent member such as glass to contact the original, read the image information of the original while manually moving it over the original, and record the read image information on thermal paper, etc. A portable copying machine is provided as a device. By the way, in this portable copying machine, if paper dust or dust from a document etc. adheres to the transparent member, the shadow of the paper dust or dust will be read as image information, reducing the reading accuracy. A problem arises in that the quality of the copied image deteriorates. Therefore, the transparent member needs to be cleaned in a timely manner.

[Problem that the invention attempts to solve]

However, conventionally, a cotton swab or the like has been used to clean the transparent member, but this not only complicates the cleaning work but also means that the transparent member is made of a material with low strength such as transparent plastic. If a large force is applied to the transparent member from a cotton swab or the like during cleaning, there is a risk that the transparent member will be damaged.

Furthermore, since the above-mentioned portable copying machine scans manually by touching the document while holding it with one hand, the copying machine may wobble during scanning and the reading window may separate from the document. In this case, there is a problem in that reading errors occur, resulting in image omissions, black spots, etc. in the copied image, and the quality of the copy is degraded. In particular, as portable copying machines have become thinner in recent years, the contact area of the copying machine with the original document has become smaller, making it more likely that wobbling will occur during scanning.

In consideration of the above-mentioned problems, the present invention simplifies the cleaning work of the transparent member in an image reading device such as a portable copying machine that reads images by manual scanning. This is to prevent damage and stabilize manual scanning.

[Means for solving problems]

The image reading device of the present invention has a main body having a document contacting surface that can be manually contacted with the document, a transparent member disposed near the document contacting surface, and a reading means for reading the image of the document through the transparent member. In an image reading device that reads an image of a document while being manually moved relative to the document, there is a gap between a position where the transparent member is covered with respect to the main body and a position where the transparent member is released. a cover member mounted so as to be movable in the open position and disposed so that a portion of the cover member is included in the same plane as the document contact surface in the open position; and a cover member provided in the cover member so as to be able to contact the transparent member. , and a cleaning member that moves along the transparent member as the cover member moves.

[Effect]

According to the above configuration, since the cleaning member moves along the transparent member when the cover member is moved between the covered position and the open position, the transparent member can be easily cleaned. In addition, since the cleaning member is supported by the cover member, excessive force is not applied to the transparent member during cleaning.
Damage to the transparent member can be prevented. Furthermore, when the cover member is opened during use, a portion of the cover member is placed on the same surface as the document contact surface, increasing the contact area of the image reading device with the document, thereby reducing device wobbling. This allows stable manual scanning. Therefore, it becomes possible to accurately read the image of the document.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. Each figure shows a portable copying machine that serves as an image reading and recording device. A rectangular recess 2 is provided on the bottom surface of the approximately rectangular parallelepiped main body 1 of this portable copying machine, and a document contact surface 3 is formed around the recess 2 for slidably contacting a document (not shown). has been done. A transparent member 4 made of glass or the like is provided at a portion of the main body 1 facing the recess 2. At the bottom of the main body 1, a cover member 5 having walls at the front, both sides and below is located at a position covering the transparent member 4 as shown in FIGS. 1 and 3, and at a position shown in FIGS. 2 and 4. It is attached so as to be movable between the position shown in the figure and the position where the transparent member 4 is opened. The bottom wall 6 of the cover member 5 is movably fitted into the recess 2, while each side wall 7 of the cover member 5 is movably fitted into the recess 8 provided on both sides of the bottom of the main body 1. There is. The lower surface of the bottom wall portion 6 is adapted to be included within the same plane as the document contacting surface 3 in both the covered position and the open position. A cleaning member 1 is provided at the rear end position of the upper surface of the bottom wall portion 6.
0 is attached so that it can contact the transparent member 4, and this cleaning member 10 cleans the transparent member 4 when the cover member 5 is moved between the covering position and the open position.
It is designed to move along the

A light source 11 such as a light emitting diode is disposed diagonally above the transparent member 4 in the bottom of the main body 1, and a lens 12 is disposed approximately in the middle of the main body 1 in the height direction, and above the lens 12 is provided as a reading means. of
A CCD (charge coupled device) 13 is provided. A rotary shaft 15 on which thermal paper 14 is wound in a roll is rotatably supported in the upper part of the main body 1, and a rotary shaft 15 is located below the rotary shaft 15 near the front wall of the main body 1. A pair of paper feed rollers 1 for unwinding thermal paper 14 from 15 and conveying it downward.
6 and 17 are discharge ports 18 provided in the front wall of the main body 1
is placed opposite to. Furthermore, a recording head 19 for recording image information on the thermal paper 14 is fixedly installed on the front wall of the main body above the paper feed rollers 16 and 17. In addition, a long rectangular printed switch 20 is provided to operate each part in the main body 1.
is provided to protrude from the rear wall of the main body 1, and the print switch 20 is movable inward of the main body 1. Although not shown in the figure, the main body 1 has a CCD on the document during scanning.
Appropriate movement amount detection means for detecting the movement amount of 13 is built-in.

In the above configuration, when copying, first,
As shown in FIGS. 2 and 4, the cover member 5
open. With this opening operation, the cleaning member 10 moves along the transparent member 4, and the transparent member 4 is cleaned. In this state, hold the copying machine with one hand, bring the document contact surface 3 and the lower surface of the bottom wall 6 of the cover member 5 into contact with the document, press the print switch 20, and manually move the copying machine over the document. to move it. Then, the original is sequentially illuminated from the edge by the light source 11 through the transparent member 4, and the reflected light from the original is transmitted through the transparent member 4 and the lens 12 to the CCD.
13. As a result, image information on the document is read by the CCD 13, and the read image information is converted into an electrical signal. During this reading, when the cover member 5 is opened, the lower surface of the bottom wall portion 6 is in contact with the document together with the document contact surface 3. Therefore, the width L ₂ of the contact area for the document is the same as when the cover member 5 is closed. The width L ₁ of the contact area is larger than the width L 1 of the contact area, and therefore, the wobbling of the copying machine due to movement over the document is reduced, and scanning stability is improved. In addition, prior to reading, the transparent member 4
is cleaned by the cleaning member 10, so the image can be read accurately. On the other hand, the amount of movement of the CCD 13 on the document is detected by the movement amount detection means, and this movement amount detection means, for example, detects the movement amount of the CCD 13 on the document.
Each time the CCD 13 moves a predetermined amount, the recording head 1
A timing signal is supplied to 9. Recording head 19
When supplied with a timing signal, it records an image corresponding to the original image on the thermal paper 14 based on the electrical signal from the CCD 13. Recorded thermal paper 14
is ejected to the outside via the ejection port 18 by the paper feed rollers 16 and 17.

When the cover member 5 is closed when the predetermined copying is completed, the cleaning member 10 is closed along with this closing operation.
The transparent member 4 is cleaned again. In the closed position, the transparent member 4 is covered by the bottom wall portion 6 to prevent dust from adhering to the transparent member 4 and damage to the transparent member 4.

In the above embodiment, a portable copying machine was described as an image reading device and a recording device, but the present invention can also be applied to other image reading devices.

[Effect of idea]

As described above, the image reading device of the present invention has a document contact surface that slidably contacts the document, a transparent member disposed near the document contact surface, and reads an image of the document via the transparent member. In an image reading device that includes a main body having a reading means and reads an image of a document while being manually moved relative to the document, the position where the transparent member is covered with respect to the main body, and a cover member mounted so as to be movable between the opening position and the cover member disposed so that a portion of the cover member is included in the same plane as the document contact surface in the opening position; and a cover member so as to be able to contact the transparent member. The cleaning member is provided on the cover member and moves along the transparent member as the cover member moves.

Accordingly, when the cover member is moved to cover or open the transparent member, the cleaning member moves along the transparent member, so that the transparent member can be easily cleaned. Further, since the cleaning member is supported by the cover member, excessive force is not applied to the transparent member during cleaning, thereby preventing damage to the transparent member.
Furthermore, when the cover member is opened when using the image reading device, a portion of the cover member is placed on the same surface as the document contact surface, so the contact area of the image reading device with the document increases, and this causes the device to This reduces wobbling and allows stable manual scanning. Therefore, it becomes possible to accurately read the image of the document.

[Brief explanation of drawings]

1 to 4 show an embodiment of the present invention, in which FIG. 1 is a schematic configuration diagram of a portable copying machine with the cover member closed, and FIG. 2 is a schematic diagram of the portable copying machine with the cover member opened. 3 is a perspective view of the main parts of the portable copying machine with the cover member closed, and FIG. 4 is a schematic diagram of the portable copying machine with the cover member open. FIG. 2 is a perspective view of the main parts of the machine. 3 is a document contact surface, 4 is a transparent member, 5 is a cover member, 10 is a cleaning member, and 13 is a CCD (reading means).

Claims (1)

[Scope of utility model registration request] The main body includes a document contacting surface that slidably contacts the document, a transparent member disposed near the document contacting surface, and a reading means for reading the document image through the transparent member. In an image reading device that reads an image of a document while being moved relative to the main body, the device is attached to the main body so as to be movable between a position where the transparent member is covered and a position where the transparent member is opened. , and a cover member disposed so that a part thereof is included in the same plane as the document contact surface in the open position, and a cover member provided on the cover member so as to be able to contact the transparent member, and as the cover member moves. and a cleaning member that moves along the transparent member.