JPH11198470A - Paper conveying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate an operation for taking out a jammed paper when jamming of the paper occurs and to comfortably carry out the operation without staining a hand. SOLUTION: A pair of paper conveying rollers 7 are provided at an inner side wall of a jam access cover 2 capable of opening a part of a paper conveying passage 17 to the outside. The rollers 7 are disposed at an inverting section 18 of the paper conveying passage 17 constituted such that the paper conveying direction is inverted in the way of the paper conveying passage 17. The paper conveying rollers 7 consists of a pair of a driving roller 3 and a following roller 4. The driving roller 3 is disposed at an inner side of a paper conveying device rather than the following roller 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper transporting device for transporting a document such as a document such as a facsimile machine or recording paper, and is configured to facilitate removal of jammed paper generated in a paper transporting path. The present invention relates to a sheet transport device.

[0002]

2. Description of the Related Art Conventionally, a paper transport apparatus for transporting a document such as a facsimile machine or a copying machine or a paper such as a recording paper has been known.
For example, in order to remove a jammed sheet (paper jam), an opening / closing cover that allows a part of the sheet transport path to be opened to the outside is provided. Then, when a jam occurs, the open / close cover is opened, and the inside of the paper transport path is opened and the inside is peeped to check the position of the jammed paper (hereinafter, referred to as jam paper). After that, the hand is inserted into the apparatus, and the jam paper is pulled out of the apparatus and removed.

For example, as shown in FIG. 4, an opening / closing cover 52 configured to be openable and closable is provided on a main body 51 of a paper conveying device in a facsimile apparatus. A part of the formed paper transport path 67 is configured to be opened to the outside. The paper transport path 67 is formed in a substantially U-shape, and is configured so that the paper transport direction is reversed in the middle part.
A drive roller 53 is provided on the main body 51 at the portion where the sheet transport direction is reversed. A driven roller 54 is disposed on the opening / closing cover 52. When the opening / closing cover 52 is closed, the driven roller 54 and the driving roller 53 come into pressure contact with each other.
7 is configured to be conveyed.

If a paper jam occurs while the paper 71 is being conveyed in the paper conveyance path 67, the opening / closing cover 52 is opened to allow the paper conveyance direction opened from the outside where the paper conveyance direction is reversed to the inside to be opened. After checking the position of the jammed paper, a hand is inserted into the main body 51 of the apparatus, and the jammed paper is pulled out from the main body 51 and removed.

[0005]

However, when a jam occurs, as described above, the user looks into the apparatus and checks the position of the jammed paper, and then inserts his hand into the apparatus to remove the jammed paper. If it is pulled out from the inside and removed, the work becomes complicated. In addition, the inside of the device may be dirty with toner or the like, or it may be difficult to insert a hand due to the size of the device being small and the like. Therefore, there is a problem in that when the jammed paper is removed by hand, the hands become dirty or the operator feels uncomfortable.

[0006]

According to the present invention, the following means are used to solve the above-mentioned problems in the paper conveying apparatus. That is, in a first aspect of the present invention, in a paper transport apparatus provided with an opening / closing cover capable of opening a part of the paper transport path to the outside, a pair of paper transport rollers is attached to an inner surface of the opening / closing cover.

According to a second aspect of the present invention, the paper transport path is configured so that the paper transport direction is reversed at an intermediate portion, and the paper transport direction is reversed in the paper transport direction in the paper transport path.
The paper transport roller is disposed.

According to a third aspect of the present invention, the paper transport roller includes a drive roller and a driven roller, and the drive roller is disposed inside the paper transport device relative to the driven roller.

[0009]

Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view showing a paper transport apparatus of the present invention in a facsimile apparatus, FIG. 2 is a side sectional view showing the paper transport apparatus with a jam access cover closed,
FIG. 3 is a side cross-sectional view showing the paper transport apparatus with the jam access cover opened, and FIG. 4 is a side cross-sectional view showing a conventional paper transport apparatus.

The paper transport device of the present invention will be described with reference to FIGS. For example, a jam access cover 2 serving as an opening / closing cover is attached to one side surface of a main body 1 of a paper transporting device that transports recording paper of a facsimile apparatus. The jam access cover 2 has a lower end portion. It is configured to be openable and closable by rotating about the center. A paper transport path 17 is formed in the main body 1.
The paper 21 deposited on a paper feed cassette (not shown) of the facsimile apparatus is separated and fed out one by one by a separation paper feeder 5 disposed below the main body 1 of the paper feeder, and the paper feed path is provided. It is configured to be conveyed inside and guided to the feed roller 6 on the upper part of the main body 1. The sheet 21 guided to the feed roller 6 is then further conveyed and reaches a recording unit (not shown) of the facsimile machine.

The paper transport path 17 is formed in a substantially U-shape when viewed from the side, and is configured to reverse the paper transport direction at an intermediate portion.
The portion where the sheet transport direction is reversed is referred to as a reversing unit 18.
Then, the reversing part 18 is connected to the jam access cover 2.
Is configured to be opened to the outside when is rotated and opened.

A driving roller 3 fixed to a driving shaft 11 and a driven shaft 12
A driven roller 4 fixed to the driving roller 3 is disposed to face the driven roller 4, and the driven roller 4 is driven by a biasing member such as a spring 14.
And is in pressure contact with the drive roller 3.
The drive roller 3 and the driven roller 4 constitute a pair of paper transport rollers 7. The driving roller 3 is arranged closer to the main body 1 of the paper driving apparatus than the driven roller 4, and is configured such that the driving roller enters the main body 1 when the jam access cover 2 is closed.

When the jam access cover 2 is closed, the sheet transporting roller 7 closes the reversing section 1 of the sheet transporting path 17.
8. Then, the sheet 21 fed out by the separation sheet feeding device 5 and guided to the sheet conveying roller 7 through the sheet conveying path 17 is nipped between the driving roller 3 and the driven roller 4, and is rotated by the driving roller 3. Then, the paper is conveyed to the feed roller 6 through the paper conveyance path 17.

The drive roller 3 is rotatably supported via a drive shaft 11 on support portions 15 provided integrally with the jam access cover 2. Further, a drive gear 13 is fixedly provided outside the support portion 15 at one end of the drive shaft 11, and a drive force from inside the main body 1 of the sheet conveying device is transmitted to the drive shaft 11 by the drive gear. It is configured as follows.

In the paper transport apparatus configured as described above, if a jam (paper jam) occurs while the paper 21 is being transported in the paper transport path 17, the jam access cover 2 is opened and the paper is opened. The paper 21 (hereinafter, referred to as jam paper) which is jammed and stopped in the transport path 17 is taken out. That is, as shown in FIG. 3, the jammed paper in the paper transport path 17 is sandwiched between the driving roller 3 and the driven roller 4 that form a pair of paper transporting rollers 7 provided in the jam access cover 2. When the jam access cover 2 is opened, the jam access cover 2 is opened.
Is automatically drawn out to the outside along with the turning operation of. After the jam access cover 2 is opened, the jam paper that has been automatically pulled out can be removed by hand.

As just described, simply opening the jam access cover 2 causes the jammed paper in the paper transport path 17 to be pulled out, so that the user can look inside the main body 1 to check the position of the jammed paper, It is not necessary to insert the hand into the jammed paper to take out the jammed paper, so that the operation of taking out the jammed paper at the time of the occurrence of the jam is simplified, and the work can be performed comfortably without soiling the hands at the time of the work.

The reversing section 18 in the sheet transport path 17 is a place where a jam easily occurs. When the jam access cover 2 is closed, the sheet 21 is pinched so as to be located at the reversing section 18. Since a pair of paper transport rollers 7 is disposed, if a jam occurs, most jammed paper is securely held by the paper transport rollers 7 and the jam access cover 2 is opened. As a result, the jammed paper is pulled out to the outside while holding the sheet, so that the operation of removing the jammed paper and releasing the jammed state can be performed efficiently.

Further, the driving roller 3 of the paper transporting roller 7 for transporting the paper 21 is connected to the driven roller 4 by the main body 1.
On the side, that is, inside the paper transport device,
The driving force from the inside of the main body 1 of the sheet conveying device can be easily transmitted to the driving roller 7 via the driving gear 13 or the like with a simple configuration.

[0019]

According to the present invention, the following effects can be obtained by adopting the above-described configuration in the paper conveying apparatus.
First, since a pair of paper transport rollers is provided on the inner surface of the opening / closing cover, the jam paper in the paper transport path is pulled out only by opening the opening / closing cover. There is no need to look inside the device to check the position of the jammed paper, or to insert the hand into the paper transport device to remove the jammed paper, making it easier to remove jammed paper when a jam occurs. Now you can work comfortably without getting your hands dirty. In addition, the reversal portion of the paper transport path has a very high occurrence rate of jam. Therefore, the pair of paper transport path rollers is

Further, as set forth in claim 2, the paper transport path is
The paper transport direction is reversed in the middle part, and the paper transport roller is disposed at the reverse part of the paper transport direction in the paper transport path. Therefore, if a paper jam occurs, the paper jam occurs. When the jam access cover is opened by being securely nipped by the transport rollers, the jammed paper is pulled out while maintaining this state, and the work of removing the jammed paper and releasing the jammed state is performed efficiently. Is now available. Further, the reversal portion in the sheet transport direction has a very high occurrence rate of jam. Therefore, by providing the sheet conveying roller pair in the reversing section, the jam removal efficiency could be improved.

Further, the paper transport roller is constituted by a drive roller and a driven roller, and the drive roller is disposed inside the paper transport device with respect to the driven roller. , Can be easily transmitted to the drive roller via a drive gear or the like with a simple configuration.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a sheet conveying device of the present invention in a facsimile machine.

FIG. 2 is a side cross-sectional view showing the sheet conveying device with a jam access cover closed.

FIG. 3 is a side cross-sectional view showing the sheet conveying device with a jam access cover opened.

FIG. 4 is a side cross-sectional view showing a conventional paper transport device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body (of paper conveyance apparatus) 2 Jam access cover (opening / closing cover) 3 Drive roller 4 Follower roller 7 Paper conveyance roller 17 Paper conveyance path 18 Reversing part

Claims (3)

[Claims] 1. A sheet conveying device provided with an opening / closing cover capable of opening a part of the sheet conveying path to the outside, wherein a pair of sheet conveying rollers are attached to an inner surface of the opening / closing cover. Transport device. 2. The paper transport path is configured such that the paper transport direction is reversed at an intermediate portion, and the paper transport roller is disposed at a reverse part of the paper transport direction in the paper transport path. The sheet conveying device according to claim 1, wherein: 3. The paper transporting roller according to claim 1, wherein said paper transporting roller comprises a driving roller and a driven roller, and said driving roller is disposed inside said paper transporting device relative to said driven roller. 3. The paper transport device according to 2.