JPH0664814A - Paper sheet delivery rotor and paper sheet delivery device equipped the rotor - Google Patents

Abstract

PURPOSE:To ensure normal paper sheet delivery without causing a delivered sheet to be stranded on a delivery roller. CONSTITUTION:Regarding a paper sheet delivery device where a pressure roller 1 is kept in contact with a delivery roller 2 and a vane wheel 5 fitted to a rotating shaft 10, and made to rotate for delivering a thermosensitive paper sheet 4 to a tray 3, the trailing end of a thermosensitive paper sheet 4 is caught by a hook section 11 formed at the end of the vane 6 of the rotating vane wheel 5 and pushed out, when the sheet 4 is stranded on the delivery roller 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper discharging rotary member for discharging paper such as thermal paper and a paper discharging device having the rotary member.

[0002]

2. Description of the Related Art FIG. 4 is an explanatory view showing a conventional paper discharge device, wherein 1 is a pressure roller, 2 is a discharge roller, 3 is a tray, and 4 is a thermal paper.

The printed thermal paper 4 is conveyed by the pressure roller 1 and the discharge roller 2 and discharged onto the tray 3. At this time, when a thin recording paper such as the thermal paper 4 is discharged, there is a problem that the recording paper 4 is bent due to the step between the discharge roller 2 and the tray 3 and cannot be discharged while riding on the discharge roller 2. It was

In order to solve the problem, the conventional method has been used.
An impeller is provided as in the technique described in JP-A-60-183754.

FIG. 5 is an explanatory view showing a structure in which an impeller is provided in the sheet discharging device of FIG. 4, 5 is an impeller, and 6 is an impeller 5.
Each of the plurality of blades is shown in FIG. The rotation of the impeller 5 causes the tips of the blades 6 to come into contact with the thermal paper 4 to generate frictional force. Due to the frictional force, the thermal paper 4 that has run on the discharge roller 2 is pushed out to the tray 3.

[0006]

However, when the thermal paper 4 is ejected by the frictional force between the blades 6 of the impeller 5 and the thermal paper 4, the thermal paper 4 to be ejected and the tray 3 or the tray 3 are to be ejected. When the frictional force with the thermal paper 4 already discharged above is large, slippage occurs between the blade 6 and the thermal paper 4,
In some cases, the thermal paper 4 is not urged in the ejection direction, remains on the ejection roller 2, and cannot be ejected normally to the tray 3.

Further, when the pressure roller 1 and the discharge roller 2 continue to convey the heat-sensitive paper 4 with the heat-sensitive paper 4 riding on the discharge roller 2, the front end of the heat-sensitive paper 4 is the front of the heat-sensitive paper 4. In some cases, the thermal paper 4 that has slipped below the rear end and discharged onto the tray 3 is out of order.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a sheet discharging rotary member and a sheet discharging device for normally discharging the thermal paper 4 to the tray 3.

[0009]

In order to achieve the above object, the present invention provides a sheet discharge having a blade that rotates in the same direction as a discharge roller that conveys and discharges the sheet to urge the sheet in the discharge direction. In the rotating body for use, an engaging portion that engages with the rear end of the sheet is provided at the tip of the blade.

Further, according to the present invention, the above-mentioned sheet discharging rotary member, a discharging roller supported coaxially with the sheet discharging rotary member, and a pressure roller for contacting the discharging roller and the sheet discharging rotary member. And.

[0011]

By employing the above-described sheet discharging rotator and sheet discharging device, the engaging portion formed at the tip of the blade is caught at the rear end of the sheet sent from the discharging roller, and the sheet is rotated in the discharging direction. Energize.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is an explanatory view showing a facsimile apparatus according to an embodiment of the present invention, in which 7 is a platen roller, 8 is a thermal head, and 9 is a cutter. Figure 4
The same members as those in the conventional technique described with reference to FIG. 5 are designated by the same reference numerals.

The roll-shaped thermal paper 4 is set in the facsimile machine so that its front end is sandwiched between the platen roller 7 and the thermal head 8. When the image information is received from the transmission side, the thermal head 8 prints the image information on the thermal paper 4 and the platen roller 7 causes the thermal paper 4 to be printed.
To transport. The printed thermal paper 4 is ejected to the tray 3 by passing its tip through the cutter 9 and between the pressure roller 1 and the ejection roller 2. When the printing of one page is completed, the platen roller 7 slightly feeds the thermal paper 4 and the cutter 9
The thermal paper 4 is cut with. Then, the pressure roller 1 and the discharge roller 2 accelerate their rotation and discharge the thermal paper 4 printed for one page onto the tray 3. Further, when the communication from the transmitting side continues, the printing of the second page is started and the thermal paper 4 on which the image information is recorded is discharged to the tray 3.

FIG. 1 is a side view of an essential part showing a device for discharging the thermal paper 4 equipped in the facsimile machine shown in FIG. 2, and FIG. 3 is a partial cross-sectional view of the device for discharging the thermal paper 4 shown in FIG. 10 is a perspective view showing the rotation axis.

Discharge rollers 2 and impellers 5 are alternately provided on the rotary shaft 10, and an integrated sheet discharge rotator is installed in a facsimile machine. In addition, the pressure roller 1 is arranged so as to be in parallel with the rotating shaft 10 and contact the discharge roller 2.
Is installed and presses the discharge roller 2.

The impeller 5 has a cylindrical body having a through hole for passing the rotary shaft 10 and four flexible blades 6 extending from the cylindrical body in a tangential direction and in a direction opposite to the rotational direction. It is composed of At the tip of this blade 6, there is a hook part which is an engaging part.
11 is formed, and the hook portion 11 is formed so as to be orthogonal to the extending direction of the blade 6 and substantially in the rotational direction. Further, the length from the center of the impeller 5 to the tip of the blade 6 is made slightly longer than the radius of the paper discharge roller 2.

Next, the operation will be described with reference to FIG. As described above, the thermal paper 4 printed by the thermal head 8 is conveyed by the platen roller 7, passes between the rotating pressure roller 1 and the discharging roller 2, and the tray 3
Is discharged to. Then, after the printing is completed or after the page-by-page printing is completed, the thermal paper 4 is cut by the cutter 9 and discharged to the tray 3 by the accelerated pressure roller 1 and discharge roller 2. At that time, when the thermal paper 4 bends due to the step between the discharge roller 2 and the tray 3 and rides on the discharge roller 2, the rear end of the thermal paper 4 comes into contact with the hook portion 11 of the rotating blade 6,
As it is, the thermal paper 4 is pushed out to the tray 3 by the rotation of the impeller 5.

As described above, in the sheet discharging rotary member according to the present embodiment, the hook portion 11 is provided at the tip of the blade 6 of the impeller 5, so that the trailing edge of the sheet that has climbed onto the discharging roller 2 is provided. When the hook 11 is caught and the paper is pushed out,
The sheet can be discharged more reliably than the method using the frictional force between the blade 6 and the sheet described in the related art.

Further, in the facsimile apparatus equipped with such a sheet discharging rotary member, the thermal paper 4 is surely ejected, so that the ejected printed thermal paper 4 is sequentially placed on the tray 3. Overlapping.

In this embodiment, the hook portion 11 is provided at the tip of the blade 6 as the engaging portion. However, the shape of the engaging portion is not limited to this and may be any shape as long as the trailing edge of the sheet is reliably caught.

[0021]

According to the present invention, by adopting the above-described sheet discharging rotator and sheet discharging device, the engaging portion is caught at the trailing end of the sheet that has run on the discharging roller, and in that state. Since the paper is urged in the ejection direction, the recording paper can be ejected reliably, and the ejected papers are stacked in order,
Good discharge can be performed.

[Brief description of drawings]

FIG. 1 is a side view showing a main part of a paper ejection device according to an embodiment of the present invention.

FIG. 2 is a side view showing a facsimile device equipped with the paper discharge device of FIG.

FIG. 3 is a perspective view of FIG. 1.

FIG. 4 is a side view showing a main part of a conventional paper ejection device.

FIG. 5 is a side view showing a main part of a conventional paper ejection device.

[Explanation of symbols]

1 ... Pressure roller, 2 ... Discharge roller, 4 ... Thermal paper,
5 ... impeller, 6 ... blade, 11 ... hook.

Claims (2)

[Claims] 1. A sheet discharging rotary member having a blade that rotates in the same direction as a discharging roller that conveys and discharges the sheet and biases the sheet in the discharging direction, wherein a rear end portion of the sheet is provided at a tip of the blade. A sheet discharging rotary body, characterized in that an engaging portion for engaging with the sheet is provided. 2. A sheet discharging rotary member according to claim 1, and a discharging roller coaxially supported by the sheet discharging rotary member,
A sheet discharge device comprising the discharge roller and a pressure roller that comes into contact with the sheet discharge rotary member.