JPS6030268Y2 - printer paper stacker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in paper stackers for printers such as line printers.

Printed line printer paper is continuous and must be neatly folded and stacked in sequence starting from the perforations.

For this purpose, a paper stacker is used, and this stacker gradually lowers a paper table depending on the weight of the paper, thereby folding the paper at a substantially constant position, thereby improving the workability of folding.

However, in conventional stackers, as the printed sheets are stored in the stacker, the number of overlapping pages increases, and as shown in Figure 1, the center of the sheet 1 becomes arched. There is a problem that it becomes impossible to organize and store them properly.

The reason why the stacked sheets are curved is that the holes in the sheets engage with the pins of the paper feeding tractor, which causes looseness and thickening of the sheets, resulting in a concave central portion.

If this condition becomes extreme, the perforations will become curved and folding will not be performed accurately.

Therefore, the purpose of the present invention is to provide a paper stacker that solves this problem, and is a stacker in which the paper tray moves up and down depending on the weight of the printer paper, and the paper tray has a notch extending along the folding direction of the paper in the center of the paper tray. and a chevron-shaped member extending along the same direction as the notch at the center of the fixed base below the paper base and protruding from the notch onto the paper base as the paper base moves up and down. It is said that

Next, the present invention will be specifically explained with reference to the drawings.

FIG. 2 is a perspective view of a printer paper stacker according to an embodiment of the present invention, FIG. 3 is an explanatory diagram of a state in which sheets are stacked by the stacker of the present invention, and FIG. 4 is a partial perspective view of a chevron-shaped member.

As shown in FIG. 2, the paper stacker of the present invention has a notch 5 provided in a paper table 2 which can be moved up and down depending on the weight of the paper 1, and a chevron-shaped member 4 attached to the center of the fixed table 3.

As is clear from FIGS. 2 and 3, the notch 5 and the chevron-shaped member 4 extend along the folding direction of the paper.

FIG. 3 1 shows a state in which no paper 1 is placed on the paper table 2, and as the paper 1 increases in weight, the state gradually changes from 2 to 3 to 4 to 5.

As the weight of paper 1 increases, paper table 2 descends and fixed table 3
The chevron-shaped member 4 protrudes from the notch 5 of the paper tray 2 and pushes up the center of the sheets 1 stacked on the paper tray 2 from below as shown at 5.

Therefore, the top of the stacked sheets is always flat and the folding operation can be performed reliably.

As shown in FIG. 4, the chevron-shaped member 4 is attached by sliding along a guide 6 to which the fixing base 3 is fixed.

Therefore, if sheets of paper having different horizontal dimensions are used and there is a possibility that the chevron-shaped member 4 will hit one side of the sheet, it can be easily removed.

As described in the embodiments above, the printer paper stacker of the present invention can prevent the stacked papers from curving in the folding direction, so there is an advantage that the stacked papers can be folded reliably.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a conventional printer paper stacking state, Fig. 2 is a perspective view of a printer paper stacker according to an embodiment of the present invention, Fig. 3 is an explanatory diagram of a paper stacking state by the stacker of the present invention, and Fig. 4 shows a partial perspective view of the chevron-shaped member. In the figure, 1 is printer paper, 2 is a paper table, 3 is a fixing table, 4 is a chevron-shaped member, 5 is a notch, and 6 is a guide.

Claims (1)

[Scope of utility model registration request] This is a printer paper stacker in which a paper table moves up and down depending on the weight of the printer paper, in which a notch is provided in the center of the paper table extending along the folding direction of the paper, and a notch is provided in the center of a fixed table below the paper table. A stacker for printer paper, characterized in that a chevron-shaped member is provided that extends along the same direction as the notch and projects from the notch onto the paper table as the paper table moves up and down.