KR20000007214U - Image reading device for easy document jam cancellation - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

Technology for stable image reading and image reading device to remove original jam easily.

2. The problem that the invention is intended to solve

In order to reduce the size of the image reading device and to realize a stable reading function, the rollers are not placed on the cover but fixed to the side plate inside the main body so that jams can be easily removed when the jam occurs, thereby preventing damage to the device. To do so.

3. Summary of solution of design

A reading roller shaft formed at both ends thereof and fixed to the side plate and having a reading roller gear fixed at one side thereof; A hinge piece positioned below the read roller and having a hinge shaft fixed to the side plate at both ends to the rear of the read roller, and having an extension piece extending forward; A spring means located below the image reading opening; And a cover shaft fixed to the side plate at both sides of the lower end, and having a cover integrally formed with a pressing piece extending downward to the lower end of the cover shaft.

4. Important uses of the devise

Used to easily remove document jams from image reading devices such as scanners and facsimiles.

Description

Image reading device for easy document jam cancellation

The present invention relates to an image reading apparatus for reading an image of an original while a document, such as a facsimile or a scanner, is moved, and more particularly, to an image reading apparatus that can easily cancel a document jam.

In general, an image reading device is installed to read an image of an original as an electrical signal in a printer or a scanner, and an image reading device is widely used to read an image while the original is moved in consideration of miniaturization and cost reduction. In the case of such a document-moving image reading apparatus, an image reading unit which reads an image of an original as an electric signal, and a reading roller which moves at a constant speed while pressing the read document are provided. It is configured to read the image of the original while transferring the original between the reading unit and the reading roller.

The configuration of the image reading apparatus will be described in detail with reference to FIGS. 1 to 2. In general, the image reading apparatus is an image forming apparatus 1 having a facsimile machine or a scanner functioning with a facsimile machine and a computer printer, or simply The scanner is mounted on a scanner (not shown) that reads only the original image.

That is, in the case of a scanner, only an image reading apparatus is mounted, in the case of the image forming apparatus 1, an image reading apparatus 2 for reading an image of an original in the main body 11 and an image recording apparatus 3 for recording an image. (2) is mounted at the same time, the image reading apparatus (2) is a document glass 13 for setting the document 26, and the document feed roller 14 and the separator plate for separating and feeding the document 26 one by one ( 15) paper feeding means using a light source, a document roller 18 for discharging the read roller 16, the image reading mouth 17, and the read document 26 to the document tray 19 for reading the image; In the above process, the document movement path 20 for moving the document 26 is provided, and the image recording apparatus 3 is separated from the sheet feeder 21 for setting the sheets of paper 27, one by one. The loaded paper 27 is guided through the paper feed path 25, and an image for forming an image by using a toner or ink jet in the process. An image is formed in the recording section 22, and the recording paper 28 in which the image is formed is discharged to the recording paper tray 24 by the recording paper discharge roller 23 at the rear end of the paper conveying path 25.

In the image reading apparatus of the image forming apparatus or the scanner configured as described above, in order to easily cope with a case where jammed paper is often generated while a document to be fed is moved, and a malfunction or the like occurs inside the image reading apparatus, image reading is performed. The cover 12 located above the apparatus 2 is configured to open, and the cover shaft 12a is formed on both sides of the lower end of the cover 12, and the cover shaft 12a is fixed to the main body 11 to cover the cover shaft ( The cover 12 is pivotally opened and closed about 12a).

Therefore, at first, the read roller is fixed to the cover side in order to easily remove the original jam, so that the jam generated document is easily separated from the read roller and the image reading opening as the cover is opened. However, the engagement and separation of the read roller gear 31 connected to the read roller 16 and the drive roller gear 31 which transfers the driving force to the drive roller gear 31 connected to the read roller 16 according to frequent opening and closing of the cover Repeatedly serious damage to the gear is not accurate image reading, the read roller 16 is mounted on the cover 12 requires a lot of space is a major obstacle to the miniaturization of the device, in recent years as described above To overcome this, as shown in FIG. 2, the roller roller shaft 16a formed at both ends of the roller roller 16 is fixed to the side plate 30 inside the main body 11 and fixed to one side thereof. By fixing the read roller gear 31 and the drive transmission gear 32 at the same time, it is possible to reduce the size of the device and to damage the gears due to the separation and engagement of the read roller gear 31 and the drive transmission gear 32 due to the opening and closing of the cover. Since the movement of the position is prevented and the position is not generated, the interval between the reading roller 16 and the image reading opening 17 is constant so that stable image reading is possible.

As described above, the read roller is fixed to the side plate inside the main body of the image reading apparatus, and the position of the read roller gear and the drive transmission gear at the one end thereof is reduced in size, and the read roller gear and the drive transmission gear are fixed. On the other hand, if the jam is generated between the read roller and the image reading opening through which the original passes for reading of the image, it is necessary to remove it forcibly. Therefore, the problem is that the original is wrinkled and damaged or torn during the removal of the jam. In particular, when a piece of the torn original is located between the read roller and the image readout, it cannot be removed outside through a professional repair worker. There is a problem that needs to be eliminated.

Therefore, in order to overcome the above problems, the present invention can be miniaturized by fixing the read roller to the inner side plate of the image reading apparatus, and the read roller gear and the drive transmission gear are not always separated even when the cover is opened or closed. The purpose of the present invention is to provide an image reading device that is easily interlocked, and easily removes jams, which facilitates the removal of jams generated between the read roller and the image reading opening, and prevents the damage of the originals when removing the jams. .

1 is a block diagram of a general image reading apparatus,

2 is a detailed configuration diagram of a conventional image reading apparatus;

3 is a combined configuration of the image reading apparatus according to the present invention,

4 is an image reading operation of the image reading apparatus according to the present invention,

5 is a document jam canceling operation of the image reading apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

12, 51: cover 12a, 51a: cover shaft

51b: push piece 16, 52: poison roller

16a, 52a: poison roller shaft 17, 53: image reading mouth

53a: hinge piece 53b: hinge axis

53c: extension 54: spring

30, 55: side plate 55a: roller shaft hole

55b: hinge shaft hole 55c: cover shaft hole

31, 56: poison roller gear 32, 57: drive transmission gear

The present invention is provided with a cover that can be opened and closed in order to achieve the above object, in the image reading apparatus for reading an image while the document is moved between the reading roller fixed to the main body and the image reading opening, the reading roller at both ends A read roller having a shaft fixed to a side plate inside the main body, and fixed with a read roller gear which rotates in response to a driving force by being engaged with a drive transmission gear on one side; Located on the lower side of the read roller to read the image of the original, the rear hinge hinge is fixed to the side plate is formed integrally formed at both ends at the rear end, the extended hinge piece is formed integrally extending the extension piece forward With mouthpieces; A spring means positioned below the image reading port and providing a repulsive force upward; And a cover shaft fixed to the side plate at both sides of the lower end, the cover shaft being pivotal upon opening and closing, and a pressing piece integrally contacting the extension piece and pushing down to the lower side only when the cover shaft extends downward to the lower end of the cover shaft and is opened. Provided is an image reading apparatus that can easily cancel document jams.

Hereinafter, the present invention will be described in detail with reference to FIGS. 3 to 5.

Figure 3 is a combined configuration of the image reading apparatus according to the present invention, Figure 4 is an image reading operation of the image reading apparatus according to the present invention, Figure 5 is a document jam release operation of the image reading apparatus according to the present invention. .

In the drawing, 51 is a cover, 51a is a cover shaft, 51b is a pressing piece, 52 is a reading roller, 52a is a reading roller shaft, 53 is a picture reading opening, 53a is a hinge piece, 53b is a hinge axis, 53c is an extension piece, 54 is A spring, 55 is a side plate, 55a is a roller shaft hole, 55b is a hinge shaft hole, 55c is a cover shaft hole, 56 is a read roller gear, and 57 is a drive transmission gear.

A cover can be opened and closed on a scanner or an image forming apparatus, and a reading roller and an image reading opening are fixed to a main body, and an image reading section is formed in which an image is read while an original passes between the reading roller and the image reading opening, FIG. As in, the read roller shaft 52a extending to both ends of the read roller 52 are integrally formed so as to be inserted into the roller shaft hole 55a of the side plate 55 in the main body so that the position is fixed. One side of the read roller shaft 52a is configured to fix the read roller gear 56 and to engage the read roller gear 56 with a drive transmission gear 57 for transmitting power from a driving source (not shown). do.

At this time, the drive transmission gear 57 is fixed to form the transmission gear shaft (57a) on the side plate 55 as in the prior art, the read roller gear 56 and the drive transmission gear 57 is always engaged with each other. The image reading mouth 53 is positioned below the reading roller 52, and the hinge pieces 53a extend rearward at both ends of the image reading mouth 53, and forwardly. An extended extension piece 53c is formed, and a hinge axis 53b is formed at the end of the hinge piece 53a to be inserted and fixed in the hinge axis hole 55b of the side plate 55.

And, by placing a spring means such as a coil spring 54 or a leaf spring to the lower side of the image reading port 53, so that the force pushing the image reading port 53 upwards, the read roller The cover 51 is positioned above the 52, and the cover shaft 51a is formed on both sides of the lower end of the cover 52 so that the cover 51 is inserted into and fixed to the cover shaft hole 55c formed in the side plate 55. Therefore, the cover shaft 51a is configured to be the center of rotation when the cover 51 is opened and closed, and a pressing piece 51b extending downward is integrally formed at the lower end of the cover shaft 51a. The extension piece 53c which is not contacted in the closed state of the cover 51 but rotates downward about the cover shaft 51a in the open state of the cover 51 and extends forward of the image reading opening 53. It is configured to rotate in contact with the extension piece 53c downwardly in contact with.

The operation of the present invention configured as described above will be described in detail with reference to FIGS. 4 to 5.

4 is an operation of reading the image of the document in the image reading apparatus according to the present invention, the reading roller shaft 52a formed at both ends of the reading roller 52 is inserted into the roller shaft hole 55a of the side plate 55. The position is fixed, and below the image reading port 53 is supported by the spring 54 and in close contact with the reading roller 52.

The hinge shaft 53b formed at the end of the hinge piece 53a extending backward is inserted and fixed to the hinge shaft hole 55b of the side plate 55 at both ends of the image reading port 53 so as to be rotatable. The image reading port 53 is positioned in close contact with the reading roller 52 by the support of the spring 54 to the hinge axis 53b as the center of rotation, and in this state, the document is fed and the document feed path is fed. While moving to 50, when the document enters between the read roller 52 and the image reading port 53, the read roller gear 56 is driven through the drive transmission gear 57 so that the read roller 52 rotates. Therefore, the image of the original is converted into an electrical signal by the image reading opening 53 while the original moves at a constant speed by the rotational force.

If a paper jam occurs due to abnormal operation of the machine during the image reading process, wrinkles of the original, or a stapling needle on the original, the document jam should be canceled. In particular, the document has a read roller 52 and an image reading mouth 53 In the state where the jam occurs in the state between the read roller 52 is fixed to the side plate 55 in the interior of the device, so that the movement is impossible, the image reading mouth ( 53), the force is applied upwards to hold the original, so if the original is pulled out by hand, the original may be torn or the surface of the reading roller or the image reading opening may deteriorate the reading function. As shown in Fig. 5, the cover 51 may be opened upward (A direction in the drawing) to remove the jammed document.

That is, the cover shafts 51a formed on both sides of the lower end of the cover 51 are inserted into the cover shaft holes 55c formed in the side plate 55, so that the cover shafts 51a are rotated when the cover 51 is opened. Since it becomes a center, the pressing piece 51b located in the lower end of the said cover shaft 51a is reversely rotated downward (B direction of drawing).

That is, the pressing piece 51b configured to extend in the lower direction extends forward to both sides of the image reading port 53 while moving downwardly about the cover shaft 51a as the cover 51 is opened. In contact with the extension piece 53c formed so as to press the extension piece 53c downward to compress the spring 54, accordingly, the image reading port 53 is fixed to the side plate 55 It is rotated downward about the hinge shaft 53b and spaced apart from the read roller 52 to form a gap.

Therefore, the joint is not generated in the document transfer path 50, so that the document causing the jam can be easily removed.

Once the cover 51 is closed in the state where the original jam is removed, the pressing piece 51b of the cover 51 is rotated upward about the cover shaft 51a to extend the extension piece 53c of the image reading mouth 53. Being spaced apart from the above, the image reading port 53 is in contact with the reading roller 52 by the support force of the spring (54).

At this time, the gears and the gears are separated and not engaged again as in the prior art, and the surface of the image reading mouth 53 and the surface of the reading roller 52 come into contact with each other, so that a force of engagement does not occur. Since mechanical deformation does not occur, it is possible to maintain a constant reading function at all times.

The image reading apparatus according to the present invention, which is configured and operated as described above, is fixed to a side in the body of the reading roller gear which is driven by receiving power from the drive transmission gear, so that the gears are always joined without being spaced apart from the gears. By maintaining the same position, it is possible to implement the stable read roller driving of the machine by maintaining the same position at all times, and at the same time, it is possible to reduce the size of the machine without being mounted on the cover. It is very easy to remove the jam-generating document by moving it downward, and when the cover is closed, the image reading port is rotated upward by the support of the spring means to make a surface contact with the reading roller. have.

Claims (1)

In the image reading apparatus having a cover which can be opened and closed, the document is moved between the reading roller fixed to the main body and the image reading opening, and the image is read. Read rollers are formed on both ends of the read roller shaft is fixed to the side plate inside the main body, the read roller is fixed to the roller roller to rotate by receiving the driving force in engagement with the drive transmission gear on one side; Located on the lower side of the read roller to read the image of the original, the rear hinge hinge is fixed to the side plate is formed integrally formed at both ends at the rear end, the extended hinge piece is formed integrally extending the extension piece forward Mouthpieces; A spring means positioned below the image reading port and providing a repulsive force upward; And The cover shaft is fixed to the side plate on both sides of the lower end is formed to be the pivot center during opening and closing, the cover piece formed integrally with the pressing piece pushing downwards in contact with the extension piece only in the open state extended downward to the lower end of the cover shaft Easily cancel document jams, characterized in that provided with an image reading apparatus.