JPS5916365Y2 - Paper processing device in electrostatic recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a paper processing device in a high-speed electrostatic recording device that includes at least a heat fixing step.

A device has already been devised that folds continuous paper by making use of folds in pre-formed creases while sliding the continuous paper down along an inclined slide after printing.

In this method, the leading edge of the paper (valley fold) is stopped by a paper tray that acts as a stopper or by the top surface of the stacked paper.

The paper is fed in sequentially from the slide section, so if you set the distance from the slide population to the paper tray so that there is only one crease (mountain fold) between them, that crease will be in the front perpendicular to the slide surface. It hardens and forms a bifold mode, resulting in smooth folding.

However, in electrostatic recording devices, heat is applied to the paper during fusing, which strips the paper of its moisture, which causes the paper to lose its elasticity, making it more difficult for creases to recover compared to normal impact-type line printers. ing.

For this reason, the above-mentioned double-folding mode is difficult to occur, and folding is not performed as well as in impact-type line printers that simply utilize the folds of the paper.

The purpose of this invention is to solve this problem, and its feature is to make smooth folding possible by actively creating a two-fold mode by hitting the paper from behind with a blade or the like at the right time. be.

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

FIG. 1 shows a schematic perspective view of a paper processing device according to the present invention.

In the figure, 1 is a sheet of paper that has been transferred through a heat-fixing process;
2 is a feed roller, 3 is a slide, 4 is a micro switch, 5 is a one-turn clutch, 6 is a motor, 7 is a vane shaft, 8
9 is a blade, and 9 is a paper holder.

The operation of the paper processing apparatus of the present invention will be explained based on the following FIGS. 2 and 3.

In each figure, 1 to 9 are the numbers shown in FIG. 1, and la and lb indicate a mountain fold and a valley fold, respectively.

In FIG. 2, the printed continuous paper 1 passes through the feed roller 2 and falls while contacting the surface of the slide 3.

Eventually, as shown in FIG. 3, the valley fold portion 1a of the paper 1 comes into contact with the microswitch 4 located at a predetermined position below the slide 3, and the switch is turned on.

The one-turn clutch 5 is operated in response to a signal from this switch, and the rotation of the motor 6 is transmitted to the blade shaft 7, so that the blade 8 hits the slightly lower side of the folded portion 1b of the paper 1.

As a result, a force is applied to the folded portion 16 in the forward direction perpendicular to the surface of the slide 3, and the above-mentioned two-folding mode occurs, resulting in smooth folding.

Changes in the folded length of the paper can be easily accommodated by making the position of the microswitch 4 and the initial position of the paper tray 9 variable.

As described above, the electrostatic recording device equipped with the paper processing device of the present invention is very effective in performing paper post-processing in connection with a processing device in a computer system.

Furthermore, it can be achieved with an extremely simple configuration and has great practical effects.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of a paper processing apparatus according to the present invention, and FIGS. 2 and 3 are diagrams for explaining the operation of the apparatus according to the present invention. In the figure, 1 is a recording sheet, a -ra is attached to the folded part 1b, 3 is a slide, 4 is a micro switch, 5 is a one-turn clutch,
6 is a motor, 7 is a blade shaft, and 9 is a paper tray.

Claims (1)

[Scope of utility model registration request] In an electrostatic recording device that sequentially lowers a pre-creased continuous sheet of paper transferred through a heat fixing process along a slide, stops the leading edge of the sheet with a stopper, and folds the sheet according to the creases of the sheet. In the paper processing device, a detection means for detecting a valley fold of the paper is provided below the slide, and the slide is provided behind the slide at a fold position next to the fold detected by the detection means, and is configured to rotate and strike the paper. A paper processing device for an electrostatic recording apparatus, comprising a blade, and the blade is rotated and operated to strike the paper in response to an output signal from the detection means, thereby folding the paper.