JPH04121360A - Paper stack mechanism - Google Patents

Abstract

PURPOSE:To realize a stack of plurality of sheets in a front part without providing a stacker in the front part of a device by providing a table so that its positioning can be performed to a horizontal position and to a tilt position in which the table is tilted with the front up in a manner wherein a plurality of sheets of paper, discharged from a discharge port in the front part when a cut sheet feeder is used, can be stacked. CONSTITUTION:At normal time, a table 13 is positioned to a horizontal position. Here, paper can be supplied from a device front part by manual insertion. In the case of using a CSF(cut sheet feeder) 6 under this condition, the paper, supplied from the CSF6 and in completion of printing, is discharged to a stacker 4 in a rear part. In the case that this paper, supplied from the CSF6 to complete the printing, is stacked in a front part, the table 13 is positioned to a tilt position. Here, the paper in completion of the printing is stacked on this tilted table 13, and a plurality of sheets of the paper can be stacked in the front part (on the table 13) without deteriorating throughput.

Description

[Detailed Description of the Invention] [Summary] Regarding a paper stacking mechanism in a printing device that has cut sheet discharge ports at the front and back and a cut sheet feeder installed at the rear, the present invention relates to a paper stacking mechanism in a printing device that has cut sheet discharge ports at the front and back and a cut sheet feeder installed at the rear. The purpose of this paper stacking mechanism is to provide a paper stacking mechanism that can realize stacking of multiple sheets of paper, and has a cut sheet discharge port in the front and back, and a cut sheet feeder can be attached to the rear, and In a printing device provided with a table in the front, the table may be placed in a horizontal position or in an inclined position in which it is tilted upward so that a plurality of sheets of paper discharged from the discharge port at the front can be stacked when the cut sheet feeder is used. The structure is such that it can be positioned.

[Industrial application field]

The present invention relates to a paper stacking mechanism in a printing device that has cut sheet discharge ports at the front and rear and a cut sheet feeder installed at the rear.

With the diversification of paper used in printing devices, efforts are being made to improve paper operability.

In horizontal printers, manually fed sheets are sucked in from the front of the printing device, and after printing are ejected to a stacker at the rear or a table at the front. Further, a cut sheet feeder (hereinafter abbreviated as C3F) is attached to the rear, sucks paper from the rear, and after printing, discharges the paper to a stacker at the rear or a table at the front.

[Conventional technology]

Cut paper sucking in this type of conventional printing device.

The drainage route is shown in Figure 4 (a) and (b). In the figure, 1 is a platen, and 2.3 is a paper feed roller. Figure 4(a)
1 shows the suction and discharge routes when the C3F is not used. Cut sheets are manually fed and sucked in from the front of the device, and after printing are discharged to the stacker 4 at the rear or the table 5 at the front. In addition, when using the C3F6 as shown in Figure 4 (c), the cut sheet is attached to the C3F6 installed at the rear of the device.
It is supplied and sucked in from the printer, and after printing is discharged onto the stacker 4 at the rear or the table 5 at the front.

[Problem to be solved by the invention]

By the way, when using C3F, continuous processing is often performed, and a stacker that can stack multiple sheets is required, but in the case of rear stacking, the next sheet cannot be sucked in until after the printing method sheet has been stacked in the stacker. , which was a factor in reducing throughput. To solve this problem, a dedicated stacker will be provided at the front. This is because multiple cards cannot be stacked on the table.

Providing the stacker at the front of the device increases the cost, so a solution is desired.

SUMMARY OF THE INVENTION An object of the present invention is to provide a paper stacking mechanism that can stack multiple sheets at the front of the apparatus without providing a stacker at the front of the apparatus.

[Means to solve the problem]

FIG. 1 is a diagram illustrating the principle of the present invention. In the figure, 11 is a front discharge port, 12 is a rear discharge port, 13 is a table, and 14 is a continuous book tractor, which is added for reference. Also, 1 is a platen,
2.3 is the paper feed roller, 4 is the rear stacker, 6 is C3
F, these are the same as before.

The table 13 is provided in front of the discharge port 11 (to the left in FIG. 1), and can be positioned in a horizontal position shown by a solid line and an inclined position where the front is bent as shown by a chain line.

[For production]

Normally, the table 13 is positioned in a horizontal position. In this case, paper can be fed manually from the front of the device. Further, when using the C3F6 in this state, the paper fed from the C3F6 and on which printing has been completed is discharged to the stacker 4 at the rear.

If it is desired to stack the sheets supplied from C3F6 and printed on at the front, the table 13 is positioned at an inclined position. In this case, the sheets on which printing has been completed are stacked on this table 13, making it possible to stack a plurality of sheets at the front (on the table 13) without reducing throughput.

〔Example〕

The present invention will now be described in detail with reference to FIGS. 2 and 3.

FIG. 2 is a side view showing the printing apparatus to which the present invention is applied in normal use, and in the figure, 21 is a print head and 22 is a carriage. Note that the same reference numerals are used for the same members as in FIG. 1.

The print head 21 is mounted on a carriage 22 facing the platen 1 above, and the carriage 22 is guided by a guide 23 to move in a direction perpendicular to the plane of the paper in FIG. Then, when the carriage 22 moves, printing is performed by operating the print head in a predetermined pattern.

The table 13 includes a bin 24 and an elongated hole 25.

On the device main body side, there are provided an arc-shaped elongated hole 26 into which the bin 24 engages, and a locking bin 27 into which the elongated hole 25 engages.

Normally, the table 13 is positioned in the horizontal position shown in FIG. 2, and the pin 24 engages with the upper end of the arcuate slot 26.
The left end of the elongated hole 25 engages with a locking pin 27. This horizontal state is maintained by a leaf spring 28 that biases the pin 24. In this case, paper can be manually fed from the mounting front section (right side in FIG. 2), and the fed paper is guided to the table 13. Further, when using the C3F6 in this state, the paper supplied from the C3F6 and on which printing has been completed is discharged to the stacker 4 at the rear.

In this case, there is a problem of throughput reduction as described above.

If it is desired to stack the sheets supplied from C3F6 and printed on at the front, the table 13 is positioned at the inclined position shown in FIG. For this positioning, push the front end of the table 13 against the biasing force of the leaf spring 28.
The bottle 24 is engaged with the lower end of the arcuate elongated hole 26. When this pushing is completed, the right end of the elongated hole 25 engages with the locking pin 27, and the table 13 is positioned at the inclined position shown in FIG. 3. In this case, the sheets on which printing has been completed are stacked on the table 13, making it possible to stack a plurality of sheets at the front without reducing throughput. In addition, there is no need for a dedicated stacker, which was required in the past.
Costs are reduced.

Note that when the printed sheets from C3F6 are stacked at the rear, the table 13 remains in the horizontal position.

〔Effect of the invention〕

As described above, according to the present invention, the following various excellent effects can be obtained.

(1) It is easy to position the table to a horizontal position or an inclined position.

(2) With the table positioned at an inclined position, a plurality of printed sheets from the C3F can be stacked at the front without reducing throughput.

(3) Therefore, a stacker dedicated to the front stack, which was conventionally required, is no longer necessary, and costs can be reduced.

(4) Depending on the purpose of use, the desired stacking direction can be easily selected.

[Brief explanation of the drawing]

Fig. 1 is a diagram explaining the principle of the present invention. Fig. 2 is a side view of the printing device to which the present invention is applied, showing the normal usage state. Fig. 3 is a side view of the printing device, using C3F and showing the front stack state. , Figures 4(a) and 4(a) and 4(a) are explanatory diagrams of the suction and ejection routes of cut sheets in a conventional printing device. In the figure, 6 is a cut sheet feeder, 11 is a front discharge port, 12 is a rear discharge port, 13 is a table.

Claims (1)

[Claims] A cut sheet feeder (6) having a cut sheet discharge port (11) and a cut sheet discharge port (12) at the front and rear parts, and a cut sheet feeder (6) at the rear part.
In a printing device that can be equipped with a table (13) in front of the discharge port (11) at the front, the table (13) is placed in a horizontal position and in the front when the cut sheet feeder (6) is used. A paper stacking mechanism, characterized in that the paper stacking mechanism is provided so as to be positionable at an inclined position that is inclined forward and upward so that a plurality of paper sheets discharged from the discharge port (11) of the unit can be stacked.