JP2562175Y2 - Paper feeder in recording device - Google Patents

Description

[Detailed description of the invention]

[0001]

INVENTION The present invention relates to a relates <br/> sheet feeding apparatus in such a recording apparatus, a suitable recording apparatus, particularly the improvement of maintainability
On the definitive sheet feeder.

[0002]

2. Description of the Related Art An image recording apparatus such as a facsimile apparatus is
While it has been widely spread to general companies and homes, on the other hand, there has been a demand for simplification of the configuration and improvement in accuracy as well as improvement in maintainability and operability. FIG. 2 is a perspective view illustrating a configuration of a conventional sheet feeding device. In FIG. 2, reference numeral 21 denotes a paper feeder, 22 denotes a paper feed cassette, 23 denotes a paper feed frame, 24 denotes a transport roll on the driving side, 25 denotes a transport roll on the driven side,
26 is a spring and 27 is a bearing. In this case, the bearing 27 is inserted into the mounting hole of the sheet feeding frame 23.
And transfer rolls 24 and 25, and a bearing 27
A spring 26 is applied to the outer periphery of the transfer roll 2
The nip pressure is applied between 4, 25. As a result, a sheet (not shown) is nipped and conveyed. Also,
When a sheet is stuck in this portion, the occurrence of a paper jam and the position of the paper jam are displayed, but the user must manually pull out the paper. However, since the transport rolls 24 and 25 are always in a pressure contact state, the sheet may be broken and a piece of paper may remain depending on the position. The miniaturization and cost reduction of the sheet feeding device in the facsimile apparatus are described in, for example, Japanese Utility Model Laid-Open No. 31626/1984 and 177265/1984.

[0003]

In the above prior art, since the driving side and the driven side of the transport roll are always in pressure contact with each other, if a paper jam occurs with the paper pinched between the rolls, the paper roll is forcibly forced. The paper may be torn in an attempt to remove the paper, and a piece of paper may remain in the apparatus, resulting in a reduction in performance. The purpose of the present invention is to improve such problems,
An object of the present invention is to provide a sheet feeding device in a recording apparatus capable of improving operability and maintainability when a paper jam occurs.

[0004]

In order to achieve the above object, a paper feeder in a recording apparatus according to the present invention includes a paper feed frame holding a driving / transporting roll driven by a main body of the recording apparatus; A paper feeder in a recording apparatus, comprising a paper feed cassette holding a driven transport roll driven by a roll, and holding and transporting a sheet by a drive transport roll and a driven transport roll. A feeder frame provided with a support portion of a shaft hole for freely supporting the shaft of the transport roll in the front-rear and left-right directions, and a leaf spring for pressing the driven transport roll supported by the support portion against the drive transport roll; In order to keep the distance between the drive transport roll and the driven transport roll substantially constant when the paper feed cassette is mounted, the drive transport roll and the driven transport roll are provided at a portion receiving the shaft of the driven transport roll.
And a positioning portion comprising a cutout . Thus, when the paper feed cassette is attached to and detached from the main body of the recording apparatus, the nip pressure of both transport rolls is appropriately increased and released.

[0005]

In the present invention, the shaft of the driven transport roll is freely supported on the paper feed cassette side by the support portion, and the driven transport roll is pressed against the drive transport roll by the leaf spring , and the paper is fed. With the positioning portion formed of a cutout provided in the frame, the distance between the axes of the drive transport roll and the driven transport roll can be kept substantially constant when the paper feed cassette is mounted. With these configurations, when the paper feed cassette is attached to and detached from the recording apparatus main body, it is possible to appropriately press the nip pressure of both transport rolls and release the nip pressure. Further, even when a paper jam occurs in a state where the paper jam occurs between the transport rolls, the nip pressure is released by removing the paper feed cassette from the main body, and the paper can be easily removed manually by the user.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view illustrating a configuration of a sheet feeding device according to an embodiment of the present invention, and FIG. 3 is a perspective view illustrating a state where the sheet feeding device according to the embodiment of the present invention is mounted on an image recording apparatus main body. In FIG. 3, reference numeral 31 denotes an image recording apparatus main body, 32 denotes a paper feeder, and 33 denotes a paper feed cassette.
The paper (not shown) is supplied in a state where is set.
In FIG. 1, reference numeral 14 denotes a transport roll on the driving side;
Reference numeral 5 denotes a driven-side transport roll, 16 denotes a leaf spring for pressing the transport roll 15 against the drive-side transport roll 14 with the paper feed cassette mounted, and 17 passes through a mounting hole of the paper feed frame 18. A bearing for indicating a shaft portion of the transport roll 14, 18 is a sheet feeding frame in which the sheet feeding cassette 33 is detachable , and 19 is a positioning portion formed of a notch . Further, the driven transport roll 15 is supported by a stupid hole so that the transport roll 15 can freely move up, down, left and right at a support portion of the paper feed cassette 33. With this configuration, as shown in FIG. 3, when mounting the paper feed cassette 33 to the image recording apparatus body 31, provided in the sheet feeding frame 18
The transport roll 15 on the driven side is accommodated in the positioning portion 19 formed of the notch , and the positional relationship between the drive side and the driven side is maintained. At this time, the leaf spring 16 attached to the sheet cassette 33 is supported by the stupid hole of the supporting portion of the sheet cassette 33.
The driven roll 15 on the driven side is pressed against the driven side in the stupid hole area, so that a nib pressure is applied. When the sheet cassette 33 is removed from the image recording apparatus main body 31,
The nib pressure by the leaf spring 16 is released. Therefore, if a paper jam occurs between the transport rolls 14 and 15 when the paper feed cassette 33 is mounted, the nib pressure is released by removing the paper feed cassette 33, and the user does not break the jammed paper. , Can be easily removed.

[0007]

According to the present invention , the recording device main body is
When installing or removing the paper cassette, nip the two transport rolls.
Pressure can be properly applied and released
Become. Also, even if a paper jam occurs when the paper cassette is caught between the transport rolls , remove the paper cassette from the main unit.
The nip pressure is released by the
The paper can be easily removed.

[0008]

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a configuration of a sheet feeding device according to an embodiment of the present invention.

FIG. 2 is a perspective view illustrating a configuration of a conventional sheet feeding device.

FIG. 3 is a perspective view showing a state in which the sheet feeding device according to the embodiment of the present invention is mounted on an image recording apparatus main body.

[Explanation of symbols]

Reference Signs List 14 transport roll on drive side 15 transport roll on driven side 16 leaf spring 17 bearing 18 paper feed frame 19 positioning unit 21 paper feeder 22 paper feed cassette 23 paper feed frame 24 transport roll on drive side 25 transport on driven side Roll 26 spring 27 bearing 31 image recording device main body 32 paper feeder 33 paper feed cassette

Claims (1)

(57) [Scope of request for utility model registration] 1. A paper feed frame for holding a drive transport roll driven by a recording apparatus main body, and a paper feed cassette for holding a driven transport roll driven by the drive transport roll. A paper feeder in a recording apparatus for nipping and transporting a sheet by a roll and the driven transport roll, wherein the paper feed cassette has a shaft hole support portion that freely supports a shaft of the driven transport roll in front, rear, left, and right directions. When,
A leaf spring for pressing the driven transport roll supported by the support portion against the drive transport roll, wherein the paper feed frame includes a drive transport roll and a driven transport roll when the paper feed cassette is mounted. In order to keep the distance between the shafts almost constant, it is installed
A recording portion provided with a positioning portion comprising a cutout, wherein when the paper feeding cassette is attached to and detached from the recording apparatus main body, the nip pressure of both transport rolls is appropriately increased and released. Paper feeder in the device.