JP2969858B2 - Paper ejection device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper discharge device for discharging paper after printing or copying in a printer, a copying machine, or the like.

2. Description of the Related Art Conventionally, this type of paper discharge device is composed of a paper discharge roller and a paper discharge stacker, and sequentially discharges printed or copied paper in the direction of the paper discharge stacker via the paper discharge roller. By
Sheets are stored in a single sheet discharge stacker.

[Problems to be Solved by the Invention] However, paper is set for each size such as B4, A4, B5, etc. in a printer or a copier, and printing is performed on a desired size of paper by designating the paper size from outside. Alternatively, when printing or copying is performed while changing the paper size in such a printer or copier, sheets of different sizes are mixed in the discharge stacker. This means that after printing or copying, there is a problem that the sheets must be aligned for each size manually.

Therefore, an object of the present invention is to provide a sheet discharging device capable of storing sheets of paper in each size.

[Means for Solving the Problems] According to an aspect of the present invention, there is provided a sheet discharging device for discharging a sheet in a predetermined direction, and storing the sheet discharged from the sheet discharging roller. In a paper ejection device provided with a paper ejection stacker, a second paper ejection stacker arranged at a position vertically overlapping the paper ejection stacker, and a width of the paper ejection roller at a paper ejection destination side of the paper ejection roller A pair of guide members disposed at predetermined intervals along the direction and guiding the paper having a predetermined width or more discharged from the discharge rollers to the second discharge stacker; The second
The paper discharge stacker is disposed on the paper discharge destination side of the paper discharge roller in a posture that supports the lower surface of the paper when passing through the paper discharge roller. .

[Operation] In the paper ejection device of the present invention having the above-described configuration, the second paper ejection stacker is disposed at a position vertically overlapping with the paper ejection stacker, and the paper ejection roller is disposed on the paper ejection destination side in the width direction of the paper ejection roller. A pair of guide members is disposed at a predetermined interval along the line, so that among the sheets discharged from the sheet discharge rollers, a sheet having a width wider than the distance between the guide members (that is, a sheet having a predetermined width or more) is guided. The sheet guided to the second sheet discharge stacker side via the member and having a width shorter than the interval between the guide members is discharged directly to the sheet discharge stacker side by the sheet discharge rollers. For this reason, it is possible to store sheets of different sizes in the respective discharge stackers.

In addition, both the discharge stacker and the second discharge stacker
Since the paper is disposed on the paper discharge destination side of the paper discharge rollers in a posture supporting the lower surface when the paper passes through the paper discharge rollers, the paper is accumulated in the paper discharge stacker and the second paper discharge stacker. The orientation (front and back) of the paper is the same.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing a schematic configuration of a printer 1 to which the present invention is applied.

As shown in the drawing, different sizes of paper (for example, A4 size paper and B4 size paper) are used in the printer 1 of the present embodiment.
Two paper cassettes 3a and 3b holding A and B in a stacked state are provided detachably, and by specifying a paper size at the time of printing, the paper cassette 3a or 3b is supplied via the paper supply roller 5a or 5b.
From 3b, a desired size of paper A or B can be supplied into the apparatus. The paper A supplied into the apparatus by the paper feed roller 5a is transported to the print unit 13 via the guide plate 7a, the transport roller 9a, and the guide plate 11a, and the paper supplied into the apparatus by the paper feed roller 5b. B is a printing unit via a guide plate 7b, a conveying roller 9b and a guide plate 11b.
It is transported to 13.

The print unit 13 includes a print head 15 for printing characters and figures on paper, a platen 17 for supporting the paper at a position facing the print head 15, and the like. By driving the print head 15 in accordance with print data input from an external device, characters and figures are printed on paper. This print section
Since the configuration and control procedure of the thirteenth drive device are well known in the related art, a detailed description thereof will be omitted.

Next, in the print unit 13, the paper on which the characters and graphics are printed
A and B are guided to the paper discharge roller 21 via the guide plate 19. A rotatable pinch roller 23 is in contact with the paper discharge roller 21 at a predetermined pressure. The paper discharge roller 21 rotates while pinching the paper with the pinch roller 23, and moves the paper in a predetermined direction ( It is discharged in the direction of arrow C shown in the figure.

As shown in FIG. 2, the paper discharge roller 21 is composed of a plurality of rollers 21a provided at predetermined intervals on a rotating shaft 25 that is rotationally driven by a drive motor (not shown).
A pair of flaps 27a and 27b as guide members are provided along the width direction of the discharge roller 21 at intervals Lx larger than the width La of the paper A and smaller than the width Lb of the paper B. I have.

The flaps 27a and 27b are used to change the direction in which the paper is discharged from the paper discharge roller 21 in a direction different from the normal direction (the direction indicated by the arrow D in FIG. 1). The discharge direction of the paper having a width larger than Lx (paper B in this case) is changed. As shown in FIG. 1, a paper discharge stacker 29b for storing the paper B and a paper discharge roller 21 from the paper discharge roller 21 are provided on the paper B discharge path whose discharge direction is changed to the direction of arrow D by the flaps 27a and 27b. A paper discharge stacker 29a for storing the paper A is provided in the discharge path of the paper A discharged in the direction of the arrow C as it is. As is clear from FIG. 1, both the paper discharge stacker 29a and the paper discharge stacker 29b support the lower surface when the paper passes through the paper discharge roller 21, and the discharge stacker 29a It is located on the paper output destination side and has a paper output stacker
The discharge stacker 29a and the discharge stacker 29b are located at positions vertically overlapping each other with the discharge stacker 29a on the upper side.

In the printer 1 of the present embodiment configured as described above, the small-sized paper A on which characters and figures are printed by the printing unit 13 is moved in the direction of arrow C shown in FIG. The paper is discharged and stored in the paper discharge stacker 29a,
Conversely, the large-sized paper B on which characters and graphics are printed by the print unit 13 is discharged in the direction of arrow D shown in FIG. 1 through the discharge rollers 21 and flaps 27a and 27b, and is discharged to the discharge stacker 29b. Is stored in For this reason, unlike the conventional case, sheets of different sizes are not mixed in a single sheet discharge stacker, and it is not necessary to divide the sheets after printing for each size.

In this embodiment, a pair of flaps 27a and 27b is used to change the paper discharge direction from the paper discharge roller 21 according to the paper size.
Although the configuration is such that the direction of switching is changed in the direction, the discharge direction of three or more types of paper can be switched for each size by increasing the number of flaps. By providing a discharge stacker at each discharge position, three or more types of paper can be switched. Paper of each size can be stored.

[Effects of the Invention] As described above, according to the paper ejection device of the present invention, sheets of different sizes can be accumulated in different paper ejection stackers by the guide member. For this reason, unlike the conventional case, sheets of different sizes are not mixed in a single sheet discharge stacker, and the trouble of classifying the sheets for each size can be omitted, and the sheet discharge device can be made extremely convenient. In addition, both the paper discharge stacker and the second paper discharge stacker are disposed on the paper discharge destination side of the paper discharge rollers in a posture to support the lower surface when the paper passes through the paper discharge rollers. Orientation of the paper stored in the paper output stacker and the second paper output stacker (front and back)
Are the same, so this is also convenient.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a schematic configuration of a printer according to an embodiment, and FIG. 2 is an explanatory diagram illustrating an arrangement state of a paper discharge roller and a flap. 1 Printer, 3a, 3b Paper cassette 5a, 5b Paper roller 13, Print section 21 Paper discharge roller, 21a Roller 23 Pinch roller, 25 Rotary shaft 27a , 27b …… Flaps 29a, 29b …… Discharge stacker A, B …… Paper

Claims (1)

(57) [Claims] A sheet discharge roller for discharging a sheet in a predetermined direction;
A sheet discharging device provided with a sheet discharging stacker for storing sheets discharged from the sheet discharging rollers; a second sheet discharging stacker disposed at a position vertically overlapping with the sheet discharging stacker; A pair of paper discharge rollers are disposed at predetermined intervals in the width direction of the paper discharge rollers on the paper discharge destination side, and guide a sheet having a predetermined width or more discharged from the paper discharge rollers to the second paper discharge stacker. A guide member, and both the discharge stacker and the second discharge stacker
A paper discharge device, wherein the paper discharge device is disposed on a paper discharge destination side of the paper discharge roller in a posture for supporting a lower surface of the paper when the paper passes through the paper discharge roller.