JPH0578002A - Sheet stacker - Google Patents

Abstract

PURPOSE:To prevent jamming from occurring by forming a receiving plate where leaf sheets discharged from a printer body are accumulated into a shape where an inclination angle to a horizontal line becomes larger little by little from a rear part toward a top end part to facilitate taking out the leaf sheets accumulated on the receiving plate and hang down a discharged continuous sheet beyond the receiving plate. CONSTITUTION:A receiving plate 2 which is installed at a printer body 1 is formed into a shape with three different inclination angles to a top end part 2c, a central part 2b, and a rear part 2a. The rear part 2a is roughly parallel to a horizontal line H, the central part 2b has an inclination angle of approximate 10 degree, the top end 2c has that of 20 degree, and a projection end 2d is formed into a curved surface with large radius. When a leaf sheet 3 is discharged to a sheet stacker with the above constitution, the leaf sheet 3 slides over the receiving plate 2 to be accumulated at a position where it interferes with the print body 1. A continuous sheet 4 is gradually curved along the rear part 2a, the central part 2b and the top end part 2c to be hung down outside the receiving plate 2 beyond a projection end 2d.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet stacking device attached to a printer and used for stacking cut sheets.

[0002]

2. Description of the Related Art FIG. 2 is a side view showing an example of a conventional sheet stacking apparatus, and FIG. 3 is a side view showing a state in which the inclination angle of the tray of the example of FIG. 2 is increased.

As shown in FIG. 2, a conventional sheet stacking device attached to a printer device and used for accumulating cut sheets discharged from the printer body is arranged so that the tray 12a is substantially horizontal as shown in FIG. Mounted on the stack, and collects the cut sheet paper 3 discharged from the printer body 11 on the
When the continuous paper 4 is discharged, the continuous paper 4 may be discharged onto the cut-sheet paper 3 accumulated on the tray 12a, and the leading end of the continuous paper 4 may go over the cut-sheet paper 3 and come out of the tray 12a. It is configured to be able to.

[0004]

As described above, the conventional sheet stacking device is mounted on the printer body so that the tray is substantially horizontal, and the cut sheets discharged from the printer body are placed on the tray. Since they are stacked, the stacked cut sheets are in a substantially horizontal state. Therefore, when you take out this cut sheet, you cannot touch the leading edge of the cut sheet without extending your hand. There is a drawback that it is difficult to take out the form.

In order to cover this drawback, as shown in FIG. 3, if the tray 12b is inclined at the mounting angle with respect to the printer main body 11, when the continuous paper 4 is discharged onto the cut-sheet paper 3, the continuous paper 4 is discharged. There is a problem that the leading end of the sheet 4 will get over the cut sheet 3 and cannot get out of the tray 12b and jam.

[0006]

A sheet stacking device of the present invention has a tray for accumulating cut sheets ejected from a printer main body, and has a shape of the tray from a rear part to a front end with an inclination angle with respect to a horizontal line. The shape is gradually increased as it progresses. Especially, the rear part is almost parallel to the horizon, the inclination angle of the central part is about 10 degrees with respect to the horizon, and the inclination angle of the tip part with respect to the horizon. The shape is about 20 degrees.

[0007]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a side view showing an embodiment of the present invention.

In FIG. 1, a tray 2 is a printer body 1
The cut sheets 3 attached to the back surface of the printer 1 and discharged from the printer body 1 are accumulated. The shape of the tray 2 is such that the inclination angles of the three parts of the tip portion 2c, the central portion 2b and the rear portion 2a with respect to the printer body 1 are changed, and the rear portion 2a is substantially parallel to the horizontal line H, Part 2b has a horizontal line H
With respect to the horizontal line H, the tip portion 2c waits for a tilt angle of about 20 degrees. The tip 2d of the tip 2c is a curved surface with a large radius.

When the single-cut sheets 3 are discharged to the sheet stacking device thus constructed, the single-cut sheets 3 slide on the tray 2 and are deposited at a position where they are in contact with the printer body 1. When the continuous paper 4 is discharged, it draws a gentle curve along the rear portion 2a, the central portion 2b, and the front end portion 2c, and hangs down beyond the protruding end 2d to the outside of the tray 2. Therefore, the continuous paper 4 is the saucer 2
Never jam on the top.

[0011]

As described above, in the sheet stacking device of the present invention, the shape of the tray is gradually increased as it goes to the leading end, so that the cut sheets accumulated on the tray are stacked. There is an effect that the paper can be easily taken out, and moreover the continuous paper discharged from the printer main body can be drooped over the tray over the tray to avoid the jam.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a side view showing an example of a conventional sheet stacking device.

FIG. 3 is a side view showing a state when the inclination angle of the tray of the example of FIG. 2 is increased.

[Explanation of symbols]

 1 Printer Main Body 2 Sauce 2a Rear 2b Center 2c Tip 2d Tip 3 Cut Sheet Paper 4 Continuous Paper 11 Printer Body 12a Sauce 12b Sauce

Claims (2)

[Claims] 1. A tray having a tray for accumulating cut sheets discharged from a printer body, wherein the tray has a shape in which an inclination angle with respect to a horizontal line is gradually increased from a rear portion to a front portion. Characteristic paper stacking device. 2. A tray for collecting cut sheets discharged from a printer main body, wherein the tray has a rear portion substantially parallel to a horizontal line, and an inclination angle of the central portion is about 10 with respect to the horizontal line. And the inclination angle of the tip is about 2 with respect to the horizontal.
A sheet stacking device having a shape of 0 degree.