KR200149594Y1 - Document feeder for facsimile - Google Patents

Abstract

[Technical field to which the invention described in the claims belong]

The present invention relates to a facsimile document feeder capable of preventing a sheet feeding failure of an original due to excessive retracting of a document when a user loads a document to be read.

[Technical challenges that drafts try to solve]

The present invention is to provide a facsimile sheet feeder that can improve the automatic paper feed function of the facsimile by installing a separate stop structure.

[Summary of solution of draft]

The present invention provides a feeding roller for transferring originals, a separating rubber plate for separating a plurality of originals into sheets, a pressing plate for keeping the separation rubber plate against the feeding roller at a constant pressure, and a friction force between the original surface and the separating torture plate. It is composed of a resilient means for generating and a stop structure for limiting the amount of the document drawn between the separation rubber plate and the feed roller.

[Important Uses of Design]

The present invention can perform a more stable original sheet feeding function by forming a stop structure configured separately from the press plate structure in the elastic means in performing a role of limiting an excessive amount of original drawing, and the stop structure is also provided with a press plate. Since it is made of an elastic material as a separate structure and directly presses the separated rubber plate at a constant pressure, even if an excessive amount of the original is drawn, only the stop structure is lifted while pushing upwards, and the elastic means by the separate structure is applied to the pressing plate. Since the pressure applied can always be kept constant, the pressure plate is lifted directly, so that an excessive amount of originals does not occur between the separation rubber plate and the feed roller at once (jam), which improves the automatic paper feed function of the facsimile machine. It can be effected.

Description

Facsimile sheet feeder.

1 is a schematic diagram showing the configuration of a transmitter in a typical facsimile apparatus.

2 is a side view showing the configuration of a facsimile document feeder in the prior art.

Figure 3 is a side view showing the configuration of the original sheet feeder of the facsimile according to the present invention.

Figure 4 is a plan view showing the configuration of a fax sheet feeder of the facsimile according to the present invention.

* Explanation of symbols for main parts of the drawings

10 feed roller 12 lower frame

14: through air 16: manuscript

18: transfer path 20: separation rubber plate

22: pressing plate 24: stop structure

26: elastic means 28: upper frame

The present invention relates to an original sheet feeder such as an OA machine or a facsimile, and more particularly, to a fax original sheet feeder that can prevent a sheet misfeed of the original due to excessive retracting of the original when the original is read. It is about.

A general transmission process in a commonly used facsimile apparatus is described with reference to FIG. 1 as follows.

An original 62 is mounted on the pedestal 63 installed on the upper surface of the facsimile, and the friction force between the automatic paper feed roller 60 and the original 62 operated by the driving force of the transmission motor is the original 62 and the original 62. Since the friction force between the 62 or the friction force between the document 62 and the rubber pad 61 is greater, the document 62 is conveyed in the direction of the driving roller 64 by the automatic paper feed roller 60. Due to the rotation of the drive roller 64 and the pinch roller 66, the document 62 is transferred to a contact image sensor 67 for reading and transmitting data.

At this time, the white roller 65 installed on the upper portion of the contact image sensor 67 inquires reference data before reading data of the document 62, and at the same time, the contact image sensor 67 from the white roller 65. The reflected light is read by a light sensor (reference data), and the data is coded, compressed, and transmitted over a telephone line.

Thereafter, the document 62 transmitted in the above process is transferred to the outlet by the outlet roller 68 and the pinch roller 66, thereby completing the transmission process.

Conventionally, as shown in Figure 1 is a side view showing the configuration of the original sheet feeder of the facsimile, the transfer passage 48 for feeding the document 46 between the upper frame 58 and the lower frame 42 of the facsimile ), The lower frame 42 is connected to form a through hole 44 so that a part of the feed roller 40 is exposed, and the separation rubber plate 50 is disposed on the lower surface of the upper frame 58. One end is fixedly attached, and the pressing plate 52 is installed on the upper frame 58 to be in close contact with the upper end of the separating rubber plate 50, and at this time, a predetermined amount of the document 46 is disposed on one side of the lower surface of the pressing plate 52. An arm 54 which is drawn between the paper feed roller 40 and the separation rubber plate 50 is formed to be in contact with the document 46, and the separation rubber plate 50 and the pressing plate 52 are formed at one side of the upper end of the pressing plate 52. Spring 56 to pressurize downwards. It is installed in the upper frame 58.

Referring to the operation of the original sheet feeder configured as described above are as follows.

When a plurality of originals 46 are inserted into the document feed passage 48 to transmit the originals, a sensor (not shown) detects this and feeds the originals 46. At this time, the paper feed roller 40 is driven. As a result, the lower surface of the document 46 is conveyed by the frictional force of the surface of the paper feed roller 40 and the separation rubber plate 50 in close contact.

At this time, the plurality of documents 46 can prevent the excessive amount of the feed between the paper feed roller 40 and the separation rubber plate 50 by the arm 54 formed on one side of the lower end of the pressing plate 52.

Thereafter, the document 46 located on the upper surface of the plurality of documents 46 is to be stopped by the frictional force with the separating rubber plate 50, and only the lowest document 46 is conveyed.

When using the above method, the arm 54 formed at the lower end of the pressing plate 52 may block an excessive amount of original 46 drawn between the paper feed roller 40 and the separation rubber plate 50, but the original 46 When the thick and large amount of) or the user pushes the document 46 to the transfer path 48 with a strong force, the arm 54 itself formed on the pressing plate 52 is pushed upwards, Accordingly, the separation rubber plate 50 is also lifted in the upper direction, a gap is generated between the paper feed roller 40 and the separation rubber plate 50. As a result, the friction force decreases, and thus the original 46 cannot be supplied sheet by sheet. In addition, there was a problem that the jam 46 occurs between the paper feed roller 40 and the separation rubber plate 50.

In order to solve the above problems, the purpose of the present invention is to provide a sheet feeder of a facsimile manuscript capable of improving the automatic paper feed function of the facsimile by installing a separate stop structure.

Another object of the present invention is to provide a device that can prevent the sheet feeding failure of the original due to the excessive introduction of the original.

Still another object of the present invention is to provide a device capable of maintaining a constant frictional force in which the paper feed roller and the separation rubber plate are always in contact.

Another object of the present invention is to provide a device capable of preventing the original jam (jam) occurring between the paper feed roller and the separation rubber plate.

Another object of the present invention is to provide an apparatus capable of retrieving an original regardless of the amount and thickness of the original.

In order to achieve the above object, the present invention provides a feed roller for transferring originals, a separation rubber plate for separating a plurality of originals into sheets, a pressing plate for closely contacting the separation rubber plate with a feeding roller at a constant pressure, and the original surface. And a resilient means for generating a friction force between and the separation rubber plate, and a stop structure for limiting the amount of the document drawn between the separation rubber plate and the feed roller.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Facsimile original sheet feeding apparatus according to the present invention is a transfer path 18, the document 16 is fed between the upper frame 28 and the lower frame 12 of the facsimile as shown in FIG. Is formed. The lower frame 12 is shortened to form a through hole 14 so that a part of the feed roller 10 for transferring the document 16 to a contact image sensor (not shown) is installed so as to be exposed upward. The lower surface of the upper frame 28 is fixed to one side of the separation rubber plate 20 to be in close contact with the paper feed roller 10 to transfer the document 16 by the friction force of each other. On the upper surface of the separation rubber plate 20, a pressing plate 22 for pressing the separation rubber plate 20 at a predetermined pressure is installed on the upper frame 22. On one side of the upper end of the pressing plate 22, an elastic means 26 formed of a leaf spring is installed in contact with the pressing plate 22 to generate a friction force between the surface of the original 16 and the separation rubber plate 20. An elastic body spring to prevent a problem in the function of separating the excessive amount of the original 16 drawn into the sheet between the paper feed roller 10 and the separation rubber plate 20 at the upper end of the separation rubber plate 20 in a sheet. The stop structure 14, which is formed as a limiting amount of the original 16 is drawn is bent into an L-shape is installed in the upper frame 28. The shape of the portion where the stop structure 24 and the separation rubber plate 20 is in contact may be changed through various design changes. That is, a predetermined rounding value may be given to the L-shape formed at one end of the stop structure 24 to increase the contact surface with the separation rubber plate 20.

The stop structure 24 operates separately from the structure of the pressing plate 22, and the stop structure 24 is installed to have a separate operating range from the elastic means 26 for applying a constant pressure to the pressing plate 22. do.

The stop structure 24 and the elastic means 26 are formed integrally with a mold, and the stop structure 24 is in direct contact with the separating rubber plate 20 without being in contact with the pressing plate 22.

Referring to the operation and effects of the present invention configured as described above are as follows.

When a plurality of originals 16 are inserted into the document transfer path 18 between the upper frame 28 and the lower frame 12 to transmit the originals, the front end of the original 16 is separated from the rubber plate 20. Steps are formed between the ends and the surface of the paper feed roller 10.

Then, the sensor (not shown) detects this and transfers the document 16. At this time, the document 16 on the lower surface of the document 16 set as the feed roller 10 is configured is the feed roller ( The surface of the rubber sheet 10 and the separation rubber plate 20 are transferred by the frictional force in close contact.

At this time, when the user draws an excessive amount of the document 16 with a strong external force, the stop structure 24 formed separately from the elastic means 26 presses the separation rubber plate 20 at a constant pressure. That is, the stop structure 24 restricts the introduction of the document 16 or more in a predetermined amount so that the document 16 having a certain height or more cannot be introduced into the separation rubber plate 20. In addition, the height plate 22 is prevented from being lifted upward by the height of the documents 16 caught by the stop structure 24.

Thereafter, the documents 16 located on the upper surface of the plurality of documents 16 remain in a stopped state by the frictional force with the separating rubber plate 20. Thus, only the bottom 16 of the plurality of originals 16 is fed to the contact image sensor side (not shown) by the frictional force with the paper feed roller 10.

In accordance with the present invention, the facsimile document feeder performs a role of restricting an excessive amount of originals, thereby forming a stopper structure configured separately from the pressing plate structure in the elastic means, thereby performing a more stable document feed function. can do. In addition, since the stop structure is made of an elastic material, which is separate from the pressing plate, and directly presses the separated rubber plate at a constant pressure, even if an excessive amount of the original is drawn, only the stop structure is pushed upwards and lifted, and a separate structure The pressure applied to the pressing plate by the elastic means can always be kept constant so that the pressing plate is lifted directly, so that an excessive amount of original paper does not occur between the separation rubber plate and the feed roller at once (jam phenomenon). This has the effect of improving the automatic paper feed function.

Claims (10)

In a facsimile apparatus for feeding a plurality of originals one by one, a separation rubber plate for contacting the paper feed roller (10) for feeding the document (16) in a predetermined direction and the document (16) supplied to the paper feed roller (10). (20), the pressing plate 22 to press the separation rubber plate 20 to the paper feed roller 10 side at a constant pressure in close contact with the paper feed roller 10, and the original in contact with the separation rubber plate 20 (16) an elastic means 26 for pressing the pressing plate 22 so that a predetermined frictional force is generated between the surface and a stop for pressing a predetermined frictional force on the separating rubber plate 20 in contact with the original 16. And a structure (24), characterized in that the sheet feeding device of the facsimile, characterized in that for supplying the sheets to be fed between the separation rubber plate 20 and the paper feed roller 10 sequentially. The apparatus of claim 1, wherein the stop structure (24) is installed with an elastic body that presses the separating rubber plate (20) in contact with the document (16) at a constant pressure. The apparatus of claim 2, wherein the elastic body is a leaf spring. The apparatus of claim 1, wherein the stop structure (24) operates separately from the structure of the pressing plate (22) and is installed in the upper frame (28). 2. The apparatus of claim 1, wherein the stop structure (24) has a range of motion separate from the elastic means (26) for applying a constant pressure to the pressing plate (22). The apparatus of claim 1, wherein the elastic means (26) is a spring. 7. The apparatus of claim 6, wherein the spring is a leaf spring. 2. The apparatus of claim 1, wherein the stop structure (24) and the elastic means (26) are molded in one piece. The apparatus of claim 1, wherein the stop structure (24) is in contact only with the separation rubber plate (20). 10. The apparatus of claim 9, wherein the shape of the contact portion between the stop structure (24) and the separation rubber plate (20) is formed to be bent in a letter shape.