JP2002019987A - Recording medium carrier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording medium carrier easily discharging a recording medium stopping between a separation carrier roller and a reverse roller by maintaining a forcible separation state in the reverse roller and the separation carrier roller with a housing part perfectly detached and disposed on the outside of the device. SOLUTION: In this carrier, one end of a release means 12 is driven by a cam 2b. When the release means 12 is turned around a fulcrum shaft 14 by resilience of an elastic body 13, a part G (a tip part) of the release means 12 presses a shaft 10 engaging with the reverse roller 3c, and the reverse roller 3c is separated from the separation carrier roller 3b because the resilience of the elastic body 13 overcomes resilience of an elastic body 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium conveying device provided with a reverse roller pressure release means.

[0002]

2. Description of the Related Art FIG. 7 is a perspective view of a conventional recording medium conveying device. As shown in FIG. 7, in a printing apparatus such as a laser printer, a recording medium transport device stores a recording medium 1 and is detachable in a direction indicated by an arrow A, a retracting roller 3a for retracting the recording medium 1, and a recording medium. A separating and conveying roller 3b for separating and conveying the medium 1, a reverse roller 3c for separating the recording medium other than the uppermost surface, and a pressurizing means for pressing the reverse roller 3c against the separating and conveying roller 3b with the restoring force of the elastic body 22 And a release means 5 that follows the cam 2a provided in the storage section 2 and separates the reverse roller 3c and the separation conveyance roller 3b against the restoring force of the elastic body 22. The shaft 7 engaged with the separation / conveyance roller 3b is supported by the bearings 8 and 9, and the shaft 10 engaged with the reverse roller 3c is supported by the bearing 11 and the pressing means 4. . The release means 5 is freely slidable in the direction of arrow B.

[0003] The operation of the conventional recording medium transport apparatus thus configured will be described. FIG. 8 is a sectional view of a main part of a conventional recording medium transport device. 7 and 8 show a state where the storage unit 2 is completely stored in the apparatus. In this state, the cam 2a provided in the storage section 2 and the releasing means 5 are not in contact with each other, and the reverse roller 3c is separated by the pressing means 4 which rotates about the fulcrum shaft 6 by the restoring force of the elastic body 22. Pressing is applied to the transport roller 3b.

FIG. 9 is a cross-sectional view of a main part of a conventional recording medium transporting apparatus showing a state where a storage section is pulled out of the apparatus. In this state, the cam 2a provided in the storage section 2 and the release means 5
The release means 5 is pushed in the direction of arrow C by the cam 2a, and the reverse roller 3c rotates in the direction of arrow D and is separated from the separation / conveyance roller 3b.

FIG. 10 is a cross-sectional view of a main part of a conventional recording medium transporting device, showing a state in which a storage section is detached outside the apparatus.
In this state, the cam 2a provided in the storage section 2 and the release means 5 are not in contact with each other, and the reverse roller 3c is
Is applied to the separation and conveyance roller 3b.

[0006]

However, when the recording medium is not transported properly and is stopped between the reverse roller 3c and the separation transport roller 3b, the recording medium is caught between the reverse roller 3c and the separation transport roller 3b. When the storage unit 2 is removed outside the apparatus as shown in FIG. 10 to remove the recording medium 1, the reverse roller 3c and the separation conveyance roller 3b are removed.
Is in contact again, and the recording medium 1 is
c and the separation / conveyance roller 3b, there is a problem that it is difficult to remove the recording medium 1 due to resistance when the recording medium 1 is removed in the direction of arrow E.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and provides a recording medium transporting apparatus capable of easily removing a recording medium stopped between a separation transporting roller and a reverse roller due to a transport failure. It is intended to be.

[0008]

In order to solve the above-mentioned problems, the present invention provides a detachable storage section for storing a recording medium,
A pull-in roller for pulling in the recording medium loaded in the storage section, a separation conveyance roller for separating and conveying the recording medium, a reverse roller for separating the recording medium other than the top surface, and a reverse roller for the conveyance roller. Pressurizing means for applying pressure with a restoring force of the elastic body, and releasing means for forcibly separating the reverse roller and the separation conveyance roller with the restoring force of the second elastic body according to a cam provided in the storage section, Only when the storage unit is completely stored in the apparatus, the reverse roller is in a pressurized state against the separation / conveyance roller, and the release unit forcibly forces the reverse roller and the separation / conveyance roller according to the mounting / removal operation of the storage unit. Even when the storage unit is separated and the storage unit is removed from the apparatus, the release unit maintains the forced separation state of the reverse roller and the separation conveyance roller. Was to so that.

With this configuration, it is possible to provide a recording-medium conveying apparatus capable of easily removing a recording medium that has been stopped due to a conveyance failure between the separation-conveying roller and the reverse roller.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a detachable storage section for storing a recording medium, a draw-in roller for pulling in the recording medium loaded in the storage section, a separation conveyance roller for separating and conveying the recording medium, A reverse roller for separating the recording medium other than the top surface, a pressing means for pressing the reverse roller against the transport roller with a restoring force of the first elastic body, and a second elastic member according to a cam provided in the storage portion. A release means for forcibly separating the reverse roller and the separation conveyance roller by the restoring force of the body is provided, and only when the storage unit is completely housed in the apparatus, the reverse roller is pressed against the separation conveyance roller, and The release means forcibly separates the reverse roller and the separation / conveyance roller in accordance with the attaching / detaching operation, and even when the storage unit is removed outside the apparatus, the release means allows the reverse roller and the separation / conveyance roller to be separated. With this configuration, the release means is actuated by the cam in accordance with the operation of pulling out the storage section, and even when the storage section is completely removed from the apparatus, the separation roller is separated from the reverse roller. State can be maintained.

Hereinafter, embodiments of the present invention will be described. FIG. 1 is a perspective view of a recording medium transport device according to an embodiment of the present invention.

In FIG. 1, a shaft 10 engaged with a reverse roller 3c is supported by a bearing 11 and a pressing means 4. A first elastic body 15 is engaged with one end of the pressing means 4, and the reverse roller 3 c is pressed against the separation / conveyance roller 3 b by the restoring force of the elastic body 15. Reference numeral 2b denotes a cam provided in the storage unit 2, and reference numeral 12 denotes release means for separating the reverse roller 3c and the separation / conveyance roller 3b from each other, and rotates around the fulcrum shaft 14 by the restoring force of the second elastic body 13. Move.

Next, the operation of the thus-assembled recording medium transport device will be described. FIG. 2 is a cross-sectional view of a main part of the recording medium transport device according to the embodiment of the present invention, showing a state where the storage unit 2 is mounted on the device. One end of the releasing means 12 is F
By pushing in the direction, it rotates about the fulcrum shaft 14, and the G portion (tip) of the release means 12 is separated from the shaft 10 engaged with the reverse roller 3c.
Therefore, the reverse roller 3c supported by the pressurizing means 4 rotating about the fulcrum shaft 6 by the restoring force of the elastic body 15 comes into pressure contact with the separation / conveyance roller 3b.

FIG. 3 is a perspective view of a recording medium transporting device according to one embodiment of the present invention, and FIG. 4 is a sectional view of a main portion of the recording medium transporting device according to one embodiment of the present invention. It is a perspective view of the state where the part 2 was pulled out of the device,
FIG. 4 is a cross-sectional view of a state where the storage unit 2 is pulled out of the device. As shown in FIG. 4, one end of the releasing means 12 is a cam 2b.
, And is rotated about the fulcrum shaft 14 by the restoring force of the elastic body 13, and the G portion presses the shaft 10 engaged with the reverse roller 3 c, and the restoring force of the elastic body 13 is reduced by the elastic body 13. 1
5, the reverse roller 3c
Is separated from the separation transport roller 3b.

FIG. 5 is a perspective view of a recording medium conveying device according to one embodiment of the present invention, and FIG. 6 is a sectional view of a main portion of the recording medium conveying device according to one embodiment of the present invention. FIG. 5 is a perspective view showing a state where the storage unit 2 is completely pulled out of the apparatus, and FIG. 6 is a cross-sectional view of a main part in a state where the storage unit 2 is completely drawn out of the apparatus. As shown in FIGS. 5 and 6, FIG. 6 shows a state in which the storage unit 2 is taken out of the apparatus in order to remove the recording medium 1 stopped between the separation conveyance roller 3b and the reverse roller 3c. As described above, the release unit 12 is in a non-contact state with the cam 2c, and the separated conveyance roller 3b and the reverse roller 3c are kept separated from each other as in FIG.

[0016]

As described above, according to the present invention, even when the accommodating portion is completely removed from the apparatus, the release roller maintains the forcibly separated state of the reverse roller and the separation / conveyance roller. The recording medium stopped between the roller and the reverse roller can be easily removed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a recording medium conveyance device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part of the recording medium conveyance device according to the embodiment of the invention.

FIG. 3 is a perspective view of a recording medium conveying device according to the embodiment of the present invention.

FIG. 4 is a cross-sectional view of a main part of the recording medium conveyance device according to the embodiment of the invention.

FIG. 5 is a perspective view of a recording medium conveying device according to an embodiment of the present invention.

FIG. 6 is a cross-sectional view of a main part of the recording medium conveyance device according to the embodiment of the invention.

FIG. 7 is a perspective view of a conventional recording medium transport device.

FIG. 8 is a sectional view of a main part of a conventional recording medium transport device.

FIG. 9 is a cross-sectional view of a main part of a conventional recording medium transport device.

FIG. 10 is a cross-sectional view of a main part of a conventional recording medium transport device.

[Explanation of symbols]

 2 Storage section 2a Cam 3b Separation / conveyance roller 3c Reverse roller 4 Pressurizing means 12 Release means 13 Elastic body 15 Elastic body

Claims (1)

[Claims] 1. A detachable storage section for storing a recording medium,
A pull-in roller for pulling in the recording medium loaded in the storage section, a separation conveyance roller for separating and conveying the recording medium, a reverse roller for separating the recording medium other than the top surface, and a reverse roller for the conveyance roller. Pressurizing means for applying pressure with a restoring force of the elastic body, and releasing means for forcibly separating the reverse roller and the separation conveyance roller with the restoring force of the second elastic body according to a cam provided in the storage section, Only when the storage unit is completely stored in the apparatus, the reverse roller is in a pressurized state against the separation / conveyance roller, and the release unit forcibly forces the reverse roller and the separation / conveyance roller according to the mounting / removal operation of the storage unit. Even when the storage unit is separated and the storage unit is removed from the apparatus, the release unit maintains the forced separation state of the reverse roller and the separation conveyance roller. Recording medium conveying apparatus according to claim Rukoto.