JPH0130450Y2 - - Google Patents

Description

[Detailed description of the invention] [Summary] A medium that has a plurality of conveyance rollers in the width direction of the medium that conveys a sheet-like medium, and a reversal guide that guides the medium to be reversed and accommodated in a storage box. In the storage device, an elastic piece is provided between the conveyance rollers and guides the rear end of the medium that has passed between the rollers toward the storage box, so that the sheet-like medium does not bend in the storage box and is normally maintained. It was made possible to accommodate.

[Industrial application field]

The present invention relates to an improvement in the structure of a medium storage device for inverting and storing a sheet-like medium discharged from a host device such as a laser printer or a copying machine into a storage box.

[Prior art]

FIG. 4 is a schematic sectional view of a conventional medium storage device, and FIG. 5 is an overall perspective view.

In the drawings, 1 is a main body of a printer that uses, for example, an electrophotographic recording method, and its fixing means B uses pressure fixing, and 2 is a sheet A of a printed form or the like.
A discharge roller 3 is continuous with the printer main body 1 and has side plates (not shown) for discharging the media into the medium storage device 10.
4 is an upper guide provided above the lower guide 3, and conveyance roller 5
It is provided along the lower guide 3 up to this side, and opens upwardly along with the cover 6 around a hinge 7. The conveyance roller 5 is about 1/1 of the lower guide 3.
When the shaft 8 is in contact with the lower guide 3 near 2 or is offset (set so that the leading edge of the sheet is below the stopping position when in seat stock)
It rotates in the direction of the drawing section 21 at a surface speed higher than the speed of the sheet to be discharged. Further, the outer periphery of the conveyance roller 5 is formed into a brush shape, a feather shape made of rubber or resin, or a soft sponge. The lower part of the lower guide 3 is inclined in the opposite direction to the upper part, and is linked to the sheet retracting mechanism 9 in a state that slightly protrudes along the surface of this part. The sheet retracting mechanism 9 is provided inside the lower guide 3 and is supported in a state in which it slightly protrudes from the notch 24 of the lower guide 3 toward the tray 15, which will be described later.
A sheet retracting belt 14 is looped around pulleys 12 and 13 supported at 0 and 11, and the retracting belt 14 moves in the direction of the retracting section 21, that is, in the direction of arrow a, at a speed equal to or higher than the speed of the discharged sheet A. Rotate to. Note that the pulleys 12 and 13 may be replaced with rubber or sponge rollers as long as they can be retracted uniformly. The retracting portion 21 is arranged slightly below the bent portion 25 of the lower guide 3. Reference numeral 15 denotes a tray provided with stepped portions 19 and 20, and has a surface along the sheet pull-in belt 14, the lower part of which is bent horizontally as much as possible to store a specified amount of sheets, and its surface is covered with sponge, velvet, etc. A non-slip plate 16 made of is attached. Two rollers 27 are provided on each side of the horizontal bent portion 26 of the tray 15.
A linear roller (not shown) is fixed horizontally on the lower side, and is attached to a rail 29 and shaft 23 provided on a side plate (not shown) of the device, and the lower guide 3
The sheet retracting mechanism 9 of the horizontally bent portion 2 of the tray 15
The tray 15 is maintained in an offset state by a notch provided in the movement direction in the tray 6, and the tray 15 can be moved in the horizontal direction (arrow b) without interfering with others. Note that the tray 15 is pressed against the sheet retracting mechanism 9 side with a constant load at any position in the movement range by a constant spring (not shown), which has one end attached to the bottom of the tray 15 and the other end attached to the device base. Axis 23 according to the amount
It is structured so that it moves up to the damper installed above.

[Problem that the invention attempts to solve]

With the above-described configuration, a sheet-like medium discharged from a printer or the like is smoothly reversed and accommodated in the tray.

However, when a long or weak sheet medium is used, the rear end (indicated by Be in FIG. 4) of the medium (indicated by symbol B in FIG. 4) is
Since there is nothing to guide in the 5 directions, the rear end Be
moves in the direction of arrow a, causing the sheet-like medium B to bend.

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks of the conventional art, an object of the present invention is to provide a medium storage device that can stably store sheet-like media in a tray without bending the medium.

[Means for solving problems]

FIG. 1 is a diagram illustrating the principle of a medium storage device according to the present invention.

In the figure, 3 is a reversing guide, 4 is an upper guide 15 is a tray, which are the same as the conventional example shown in FIGS. 4 and 5, and their explanation will be omitted.
A is cut paper, which is ejected from the printer main body 1, 30 is a conveyance roller, and a plurality of (three in the figure) protrusions 30a, 30b, 30c on the surface.
A plurality of pinch rollers 31 are provided at predetermined intervals over the entire width of the cut paper A to be outputted in the width direction. 32 is an elastic piece that conveys paper A, and is provided between a plurality of conveyance rollers 30 so as to protrude in the direction of the tray 15 (the position shown by the solid line). It is movable (range shown by arrow D) so as to be pressed to position 3.

[Effect]

In the above-described configuration, when the cut paper A is discharged from the printer main body and reaches between the conveyance roller 30 and the pinch roller, the cut paper A
stretched between.

The elastic piece is pressed against the reversing guide 3 by the rigidity of the cut paper A present between the conveying rollers 30.

This state continues until the rear end of the cut paper A reaches the cut paper A, so that the leading edge of the cut paper A is guided along the guide surface of the reversing guide 3 to the retracting section between the reversing guide 3 and the tray 15. 21 and is securely accommodated in the tray 15.

On the other hand, after the rear end of the cut paper A passes between the conveyance roller 30 and the pinch roller 31, the cut paper A is released from the stretched state between the conveyance rollers 30, so that the pressing force on the elastic member 32 is increased. gradually becomes zero.

The elastic piece 32 returns to the position shown by the solid line in FIG. 1 and guides the rear end of the cut paper A toward the tray 15.

Therefore, the rear end of the cut paper A moves toward the tray 15 without being bent, and the cut paper A is normally accommodated in the tray 15.

〔Example〕

2 and 3 are explanatory diagrams of an embodiment of the medium storage device according to the present invention, where FIG. 2 is a side view and FIG. 3 is a view seen from the direction indicated by symbol X in FIG. 2. .

In the figure, parts that are the same as those shown in FIGS. 36 is an upper guide, which is provided above the first guide 35 and guides the cut paper A sandwiched between the first guide 35 and the first guide 35. ,
37 is an upper cover; 38a, 38b are elastic pieces made of a material such as Mylar and fixed to the first guide 35; 39 is a conveyance roller; rollers 39a, 39b, 39c, 39d; 39e is a shaft, and conveyor rollers 39a to 39a have a plurality of protrusions (3) on the surface.
39d is attached, 40 is a pinch roller, which is provided to face the conveyance rollers 39a to 39d, respectively, 41 is a fan, and 42 is a motor that rotationally drives two belts 43 and 44 wound around a pulley 42a. , 43 is a belt that transmits the rotational force from the motor 42 to a pulley 45 provided at one end of the shaft 39e to rotate the conveying rollers 39a to 39d, and 44 is a belt that rotationally drives the shaft 10. Particularly, the parts 45a and 45b that rotationally drive the retraction belt 14 are side plates that hold the shaft 39e, the shaft of the motor 42, and the like.

In the configuration described above, the cut paper A discharged from the printer main body 1 is transported between the transport rollers 39a and 39a.
39d and the pinch roller 40, and is stretched between the conveying rollers, and as it advances, the elastic pieces 38a and 38b are pressed in the direction of the reversing guide 3 and guided in the direction of the retracting part 21. Ru.

The rear end is the conveyor rollers 39a to 39d.
When passing between the elastic parts 38a and 38b, for example, the projections 39a ₁ and 39a of the transport rollers 39a and 39c
As _39c1 moves, it slowly moves sequentially to the positions shown by the solid lines, and guides the rear end of the cut paper A without flipping up the rear end of the cut paper A.

Therefore, the rear end of the cut paper A discharged from the printer main body 1 is guided and conveyed toward the tray 15 by the elastic pieces 38a and 38b, so that the cut paper A is not bent. Tray 15
It is normally housed inside.

In this embodiment, the conveyance roller has been described as having a protrusion, but the present invention is not limited to this, and rollers of various shapes can be used.

〔effect〕

As described above, according to the present invention, the sheet-like medium guided by the reversing guide and reversely stored in the storage box is not bent, and can be properly stored in the storage box.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the principle of the present invention, FIGS. 2 and 3 are explanatory diagrams of an embodiment, and FIGS. 4 and 5 are explanatory diagrams of a conventional medium storage device. In the figure, A is cut paper, 3 is a reversing guide,
15 is a tray, 30 is a conveyance roller, 31 is a pinch roller, and 32 is an elastic piece.

Claims (1)

[Claims for Utility Model Registration] A plurality of conveyance rollers that are provided in the width direction of a sheet-like medium discharged from a host device and convey the sheet-like medium; and a conveyance roller that guides the sheet-like medium toward the lower part of the conveyance roller. a reversing guide having a curved surface for reversing and guiding the sheet-like medium; and a state in which the sheet-like medium guided and conveyed by the reversing guide is sandwiched between the reversing guide and reversed. A medium storage device comprising at least a storage box that accommodates a storage box, wherein the medium is provided between the plurality of transport rollers so as to protrude toward the storage box, and a sheet-like medium is present between the transport rollers. is bent in the reversing guide direction due to the rigidity of the medium, and when the rear end of the medium passes between the rollers, it returns to the protruding position and guides the rear end of the medium toward the storage box. A medium storage device comprising an elastic piece provided in the holder.