JPH06255868A - Recorder - Google Patents

Abstract

PURPOSE:To perform paper discharge action without dropping down recording paper from a paper discharge tray while preventing a printing surface from flawing of the recording paper existing to be discharged, in the case of discharge action. CONSTITUTION:Fed recording paper 16 is fed to the second step paper discharge roller 102 and a driven roller 101 by the first step paper discharge roller 100 and the driven roller 101 and discharged to a paper discharge tray 14. Here by passing through the second step paper discharge roller 102 formed in a U shape, since the recording paper 16 is warped upward along a discharge direction, virtual rigidity is increased to advance the paper, without hanging down by its own weight, to the discharge direction. The discharge direction is determined by set up positions of the first/second step paper discharge rollers 100, 102, but by setting to an upper side with a surface of the paper discharge tray 14 serving as the reference, the paper is fed, so as to prevent it from coming into contact with the recording paper 16 existing to be discharged, before ending discharging paper.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording device using rectangular paper and film as output media.

[0002]

2. Description of the Related Art FIG. 4 shows an embodiment of a conventional thermal transfer printer. In FIG. 4, the recording paper 16 is sent to the paper feed roller 9 by the paper feed roller 7, and is conveyed to the print start position between the recording head 1 and the platen roller 5, and the print start position on the recording paper 16 is the paper feed roller 9. The recording paper 16 is provided by the position sensor 19 arranged in advance.
The tip of is always in the correct position. Next, the head cam 2 is rotated, the recording head 1 is lowered, and the ink sheet 15 which is a transfer film and the recording sheet 16 which is a transfer target sheet are sandwiched, and the sheet feeding roller 9 is driven to feed the recording sheet 16 and the platen roller 5 Is driven to rotate and the recording head 1 generates heat to start printing. When printing is completed, head cam 2
Is rotated and the recording head 1 is lifted and is fed by the paper feed roller 9 to the paper discharge roller 11. The paper discharge roller 11 discharges the recording paper 16 to the paper discharge tray 14. Output tray 1
The discharged recording paper 16 is stored in the sheet 4.

[0003]

However, in the conventional paper discharge roller, the leading end of the recording paper in the middle of discharging is lowered by its own weight, and the leading end comes into contact with the recording paper already discharged to the paper discharge tray. Ejection continued while rubbing the print surface, and the print surface was scratched in the discharge direction. Also, when discharging the film, if static electricity is charged on the film during the printing process or paper feeding process, the film already in the discharge tray and the film in the process of discharging will come into contact with each other and will be adsorbed by the static electricity and will continue to move in the discharge direction. It was spilled and spilled from the output tray.

[0004]

According to the present invention, in order to solve the above-mentioned problems, in an apparatus using a recording sheet and a film as a recording medium, a discharging means is used to reliably discharge the recording medium in a warped state. It is something to do.

[0005]

That is, according to the present invention, with the above configuration, the recording medium to be ejected is warped upward along the ejection direction to increase the apparent rigidity, so that the tip of the recording medium during ejection is lowered by its own weight. In addition, by arranging the two discharge rollers at an angle, the discharged paper is fed upward so that it does not come into contact with the already discharged recording medium in the middle of discharging, and the print surface is damaged. This prevents the discharged paper from spilling out from the discharge tray.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a schematic cross-sectional view of a recording apparatus to which the paper discharge mechanism of the present invention is applied. A platen roller 5 is arranged so as to face the recording head 1, and a recording paper 16 and an ink sheet 15 pass between them. The printing is performed by the recording unit, the recording sheet 16 is conveyed by the recording sheet conveying unit, and the ink sheet 15 is conveyed by the ink sheet conveying unit.

The recording section includes a recording head 1 and a platen roller 5.
Is a line head in which a heating resistor (not shown) is linearly arranged on the lower surface of the recording head 1 corresponding to the platen roller 5. The recording head 1 raises and lowers the recording head 1 by rotating a head up plate 3 attached to the recording head 1 by a drive device (not shown) and pressing the head up plate 3 with the head support pin 20 as a rotation center. By raising this vertical movement at the time of feeding, a space is secured between it and the platen roller 5 in the conveying direction of the recording sheet 16 to prevent conveyance failure at the time of feeding, and by lowering at the time of printing, the ink sheet 15 and the recording sheet 16 are separated. Pinch recording head 1
An appropriate printing pressure is generated by the head spring 4 acting on the upper surface of the. The platen roller 5 has a cored bar made of a metal roller as a shaft and covers the platen rubber. When pressed by the recording head 1, the platen rubber is deformed to generate a pressure necessary for printing, and the ink sheet 15 and recording are performed. The paper 16 is brought into close contact.

The recording sheet conveying means is a sheet feeding cassette 13.
A paper feed mechanism that conveys the recording paper 16 from the paper, a paper feed mechanism that conveys the recording paper 16 in the recording unit, and the paper ejection tray 1
It is composed of a paper discharge mechanism that conveys the recording paper 16 up to 4. The paper feed mechanism is a paper feed cassette 1 for storing the recording paper 16.
3, a sheet feeding roller 7 driven via a driving force transmission system (not shown), and a recording sheet 1 stored in a sheet feeding cassette 13.
The sheet feeding cassette roller 6 acts on the sheet feeding roller 6, and the separation roller 21 arranged in parallel with the sheet feeding cassette roller 6 with the recording sheet 16 interposed therebetween. The paper feeding mechanism is composed of a capstan roller 9 on the surface of which fine metal particles are melted and sprayed, a capstan roller 9 and a recording paper 16 which are sandwiched and a corresponding driven roller 10, and a driving force transmission system (not shown). The capstan roller 9 is driven.

The paper discharging mechanism has two paper discharging rollers 100 and 102 rotating via a driving force transmission system (not shown) and two driven rollers 101 arranged corresponding to the two discharging rollers. The side is the first-stage discharge roller 100, and the downstream side is the second-stage discharge roller 102. The second-stage discharge roller shaft 102-1 is divided into three parts in the axial direction as in the first embodiment of the present invention shown in FIG. 3, each of which is connected by the flexible coupling 103, and the third divided part. A second-stage discharge roller 102 is axially supported by each of the second-stage discharge roller shafts 102-1 and a corresponding driven roller 101 corresponds to each of them. The further divided rollers are arranged in a U shape so that the second-stage discharge roller shaft 102-1 is warped upward. This is done because the angle between the second-stage sheet discharge roller 102 at the center and the second-stage sheet discharge rollers 102 arranged at the left and right ends is 30 °. In addition, the first-stage ejection roller 100 and the second
The tangent line formed by the corrugated sheet ejection roller 102, that is, the ejection direction of the recording paper 16 is 15 above the surface of the paper ejection tray 14.
It is arranged at an angle of °.

The center distance between the first-stage discharge roller 100 and the second-stage discharge roller 102 is 50 mm. The first-stage discharge roller shaft 100-1 is a single-axis roller that is not divided, but three first-stage discharge rollers 100 are pivotally supported. The driven roller 101 corresponds to each of these. Figure 4
As described above, as a second embodiment of the present invention, the discharge guide plates 104 for limiting the discharge conveyance path of the recording paper 16 are arranged so as to sandwich the recording paper 16 above and below, and instead of the first-stage discharge rollers 101. May be used.

In the ink sheet conveying means, the ink sheet 15 is fed from the ink sheet supply roller 17 and is conveyed by the ink sheet take-up roller 18 via a driving force transmission system (not shown). In the case of color printing using a multi-color ink sheet, the driving force applied to the ink sheet take-up roller 18 is switched by a controller (not shown) at the time of cueing the ink portion and at the time of printing. A large driving force is applied in order to speed up the rotation of the ink sheet take-up roller 18 in order to achieve a short printing time when the ink portion of each color is cued. At the time of printing, the ink sheet conveyance speed is the same as the conveyance speed of the recording paper 16, and since it is sufficient to generate a tension for peeling the ink sheet 15 from the recording paper 16, a small driving force is sufficient.

In the case of color printing, the ink sheet 15
Indicates that the ink portion applied to the ink sheet 15 is provided in the order of yellow, magenta, cyan, and black. After transferring one color at a time, the recording paper 16 is returned to the original print start position, and is sequentially overlaid accurately. By doing so, a full color image is obtained.

Next, the operation of the recording apparatus thus constructed will be described with reference to FIG. First, the paper feed cassette 13
The unprinted recording paper 16 is set in. The set recording paper 16 is taken out of the cassette 13 by the counterclockwise rotation of the paper feed cassette roller 6. The separation roller 21 arranged in parallel with the recording paper 16 with respect to the paper feed cassette roller 6 rotates in the direction opposite to the rotation direction of the paper feed cassette roller 6, and the recording paper 16 is fed in multiple layers. Prevent. The recording paper 16 taken out one by one is sent by the paper feed roller 7 to the paper feeding mechanism which is the next carrying means.

The recording paper 16 sent next is conveyed to the position of the capstan roller 9 and is pressed against the capstan roller 9 by the pinch roller 10. Next, the capstan roller 9 is driven to rotate in the counterclockwise direction by a pulse motor (not shown), and the recording paper 16 is conveyed in the normal direction. The front end of the recording paper 16 is detected by the position sensor 19 and stops when it is fed to the print start position. Then, the head cam 2 rotates, and the recording head 1 rotates in a direction in which the recording head 1 moves down around the head pin 20.
6 and the ink sheet 15 are pressed against the platen roller 5. Then, the capstan roller 9 rotates at a predetermined speed and the recording paper 16 is conveyed at the printing speed. At the same time, the heating resistor of the thermal head 1 formed in a line dot shape along the axial direction of the platen roller 5 generates heat according to the image information of the controller (not shown), and the ink on the ink sheet 15 is transferred to the recording paper 16. It Then, after the ink of one color is transferred, the head cam 2 rotates and the recording head 1 moves up around the head pin 20 to separate the ink sheet 15 and the recording paper 16 from the platen roller 5. The recording paper 16 is conveyed in the opposite direction by the reverse rotation of the capstan roller 9 and is returned to the print start position again to transfer the next ink. After all the ink is transferred by repeating this, the recording paper 16 is transferred to the first-stage discharge roller 1
Sent to 00.

The sent recording paper 16 is sent to the second-stage discharge roller 102 and its driven roller 101 by the first-stage discharge roller 100 and the driven roller 101, and is discharged to the discharge tray 14. At this time, the recording paper 16 is passed by passing through the U-shaped second-stage discharge roller 102.
Since it warps upward along the discharge direction, the apparent rigidity increases and it moves in the discharge direction without hanging downward due to its own weight. The ejection direction is the first-stage ejection roller 100 and the second-stage ejection roller 1
Although it is determined by the installation position of No. 02, by setting it to the upper side with the surface of the paper discharge tray 14 as a reference, the recording paper 16 that has already been discharged is delivered without contact until the end of paper discharge. In this way, the recording paper 16 has two sets of the discharge rollers 10
Output tray 1 without problems by passing 0 and 102
It is discharged to 4. In this embodiment, the recording paper is used as the recording medium, but it goes without saying that a film sheet, an OHP sheet or the like can be used.

[0016]

As described above, according to the present invention,
By curving the discharged recording paper upward along the discharging direction to increase the apparent rigidity, it is possible to prevent the leading edge of the recording paper from dropping due to its own weight, and to arrange the two discharge rollers at an angle. Prevents the print surface from being scratched and prevents the recording paper from spilling out from the output tray by preventing the print surface from being scratched by contacting the recording paper that has already been discharged during the discharge. To do.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a recording apparatus of the present invention.

FIG. 2 is a detailed view of the first embodiment of the recording apparatus ejection mechanism of the present invention.

FIG. 3 is a diagram of a second embodiment of the recording apparatus ejection mechanism of the present invention.

FIG. 4 is a schematic sectional view of a conventional recording apparatus.

[Explanation of symbols]

 14 Paper Ejection Tray 16 Recording Paper 100 First Stage Paper Ejection Roller 101 Follower Roller 102 Second Stage Ejection Roller 103 Flexible Coupling 104 Paper Ejection Guide Plate

Claims (1)

[Claims] 1. A recording apparatus having an ink sheet, a paper feed cassette, a recording medium, a conveying means therefor, a recording means, a discharging means, and a discharging tray, wherein the discharging means includes a first discharging means and a second discharging means. The second discharging means is installed at a position higher than the first discharging means immediately before the paper discharge tray,
Further, the recording apparatus having a sheet discharging mechanism, wherein the second discharging means is provided with a means for bending the recording medium and discharging it.