JPS63212575A - Recording sheet delivery mechanism for printer - Google Patents

Abstract

PURPOSE:To simplify the structure and reduce the size of a recording sheet delivery mechanism by providing a recording sheet pushing pin moving along an arcuate locus from the rear edge of a recording sheet base toward a forward edge along the upper surface of the base by the rotation of an arm. CONSTITUTION:A recording sheet in a sheet feeding case 3 is fed laterally rightward of a printer body to a printing unit A, printed, then fed by feed rollers 20 laterally leftward of the body [an arrow (a)], and mounted on a recording sheet base 21. In this case, since an arm 23 is disposed at a position rotated to the rear edge 21c side of the base 21 and a recording sheet pushing pin 24 is also disposed at the rear of the base 21, they do not disturb the sheet 5 in case of feeding. Then, a motor 25 is operated to drive a shaft 22 through a worm gear mechanism 26, to rotate the arm 23 to a front panel 7a, the pin 24 is moved along an arcuate locus in a forward direction [arrow (b)] in the arcuate long hole 21a of the base 21 to push the rear edge of the sheet, thereby delivering the sheet 5 from a recording sheet delivery port 6.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention provides a cassette insertion slot for inserting an ink ribbon cassette, a recording paper insertion slot for inserting a sheet of recording paper, and a recording paper insertion slot for ejecting the recording paper after printing. The present invention relates to a recording paper ejection mechanism in a front-operated printer in which a recording paper ejection port is provided on the front of the printer main body.

[Prior art 1] Full-color printers capable of multi-gradation expression are generally used as hard copy devices for making hard copies of images on displays such as televisions, so they are designed so that they can be operated even when placed in a TV shelf. Although it is desirable to use a scraping type printer, in conventional printers of this type, the inlet/outlet for the paper feed case that stores the sheet-shaped recording paper, and the outlet for the recording paper after printing are provided on the front of the printer body. However, the ink ribbon cassette was designed to be inserted from the side of the printer body due to the paper feed path in which the paper was fed from the front and discharged from the front. This is inconvenient to operate, so in order to make all operations possible from the front of the printer body, the applicant installed a cassette insertion slot 2 for inserting the ink ribbon cassette 1, a paper feed slot as shown in FIG. A front-operated printer 7 has been developed in which a paper feeding case inlet/outlet 4 for loading and unloading a case 3 and a recording paper outlet 6 for discharging recording paper 5 after printing are all provided on the front panel 7a of the printer body. The conventional recording paper ejecting mechanism 8 applied to this front-operated printer will be explained with reference to the WS6 diagram. 9 feeds the recording paper 5 after printing to the left in the width direction of the printer main body (in the direction of arrow (A)). feed roller,
Reference numeral 10 denotes a recording paper base, and reference numeral 11 denotes an ejection roller provided in a direction perpendicular to the feed roller 9 (that is, parallel to the width direction of the printer main body), and this ejection roller 11 is rotatably supported by 7-Al2. At the same time, it is rotationally driven by the motor 13 via the bell) 14.
A solenoid 17 that rotates 2 around a shaft 16 allows it to move up and down.

In this way, the printing paper that has been sent is turned 90° in the direction of the arrow (B) by the ejection roller 11, and is ejected from the recording paper ejection port 6 on the front side.

[Problem to be Solved by the Invention 1] Since the recording paper feeding direction in the printing device section is perpendicular to the direction in which the ink ribbon cassette is inserted, it is necessary to adopt a front-retracting structure in which the ink ribbon cassette is inserted from the front. However, in the conventional mechanism using the ejection roller 11, the recording paper is fed by the feed roller 9 after printing (when the ejection roller 11 The structure is complicated due to the complicated operation of raising the feed roller 9, lowering the discharge port 211 when the feeding of the feed roller 9 is completed, and then rotating and driving the discharge a-roller 11. The disadvantage is that the device becomes larger.

The present invention has been made in view of the above circumstances, and it simplifies the structure of the recording paper ejection mechanism in a front-operated printer.
Moreover, the purpose is to make it smaller.

[Means for Solving Problem E] In order to solve the above problems, the present invention provides a feed roller that feeds printed recording paper in the width direction of the printer body, and a feed roller that receives the recording paper that is fed by the feed roller. a recording paper base; an arm provided to be rotatable back and forth in a plane parallel to the recording paper base around a ring located near the side end of the recording paper base; The recording paper push-out pin moves in an arcuate trajectory from the rear edge of the recording paper base toward the front edge of the recording paper base along the upper surface of the recording paper base due to the rotation of the recording paper base.

[Operation 1] In the above configuration, the arm is in a state of being rotated toward the rear of the printer body before the recording paper discharge operation, and therefore the recording paper ejecting pin at the tip thereof is also located at the rear position of the recording paper base. Here, the recording paper printed by the printing device section is fed in the width direction of the printer main body by the feed roller, and when it rides on the recording paper base, the arm rotates in the front direction around the ring and pushes out the recording paper at its tip. The pin moves forward from the rear position while pushing the rear edge of the recording paper along an arcuate trajectory, and the recording paper is ejected from the front recording paper ejection port.

[Embodiment 1] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 5. The printer of this embodiment is a thermal transfer full-color printer that is used as a hard copy device for hard copying images on a display such as a television, as in the past, and as shown in FIG. 4 described above, an ink ribbon cassette 1 is inserted. Cassette insertion slot 2, paper feed case loading/unloading slot 4 for loading and unloading the paper supply case 3, recording paper 5 after printing
This is a front-operated printer 7 in which all recording paper ejection ports 6 for ejecting paper are provided on the front panel 7a of the printer main body. Although the details are omitted, the recording paper stacked and stored in the paper feed case 3 is arranged so that it runs to the right in the width direction of the printer body and is sent to the printing device section where the ink ribbon cassette 1 is located. It has become. As shown in FIG. 5, in the printing device section A into which the ink ribbon cassette 1 is loaded, a thermal head 18 and a roller 19 are arranged to hold the ink ribbon 1a between them, and the ink that flows into the recording paper 5 is disposed. Transferring is performed by pressing the thermal head 18 while feeding the ribbon 1a to the left in the width direction of the printer main body (in the direction of arrow (A)).

A recording paper ejector 1fi6'4B of the present invention is provided on the side of the printing device section A, as shown in FIG.

As shown in PIS 1 and FIG. A recording paper table 21 is provided to receive the recording paper 5 being fed by the row 220.

The front side &21a of this recording paper table 21 faces the recording paper outlet 6 on the front side of the printer main body. A shaft 22 is provided perpendicularly to the recording paper base 21 on the back side near the side edge of the recording paper base 21, and is integrated with this shaft 22 and rotates within a plane parallel to the recording paper base 21 with this shaft 22 as the center. An arm 23 is provided that can reciprocate within a predetermined angle range, and at the tip of this arm 23 is a recording paper ejecting pin 24 that protrudes from an arc-shaped elongated hole 21b drilled in the recording paper base 21 toward the top surface of the recording paper base. installed. The pongee 22 is rotatably driven by a motor 25 via an ohm gear h126.

Next, the operation will be explained.

The recording paper in the paper feed case 3 runs to the right in the width direction of the printer main body, is sent to the printing device section A, is printed in the state shown in Fig. The paper is sent to the left in the width direction of the main body (arrow (A)), and the recording paper table 21
Get on top. In this case, the arm 23 is at the position rotated to the rear edge 21cgA of the recording paper base 21, and therefore the recording paper ejecting pin 24 is also at the rear position of the recording paper base 21.
It does not become an obstacle when the recording paper 5 is fed, and then
The motor 25 operates and the shaft 22 is connected to the worm gear fiNII2.
The arm 23, which is driven through the wheel 6 and is integral with the wheel 22,
As shown in the figure, it rotates toward the front panel 7a, and the push-out pin 24 at its tip moves along an arcuate trajectory in the arcuate elongated hole 21a of the recording paper base 21 in the front direction (in the direction of the arrow (b)). Press the rear edge to eject the recording paper 5 from the recording paper outlet 6 of the front panel 7a.

As described above, in the printer of the present invention, the recording paper is ejected by an extremely simple mechanism in which the arm 23 having the recording paper ejecting pin 24 at the tip is rotated about the shaft 22. It is a front-operated type in which the paper feed case 3 for inserting recording paper is inserted and removed, the ink ribbon cassette 1 is inserted and removed, and the printed recording paper is ejected from the front. You can perform the operation even if

Note that the arm 23 does not necessarily need to be placed on the back side of the recording paper base 21; the arm 23 may be placed on the top side of the recording paper base 21, and a long hole made in the recording paper base 21 by a recording paper push-out pin, or The recording paper may be pushed out along the groove or by sliding on the upper surface of the recording paper table.

Furthermore, various drive mechanisms other than those of the embodiment may be considered for the drive Ia mechanism for rotating the arm 23. In short, it is sufficient that the arm 23 is rotated about one point near the side end of the recording paper base 21 in the recording paper feeding direction after printing.

[Effect of the Invention 1] As explained above, according to the present invention, in a front-handling type printer, a recording paper ejecting pin is attached to the tip of an arm that rotates around a point near the side edge of the recording paper base. The recording paper ejecting pin pushes the rear edge of the recording paper and ejects it from the recording paper ejection port by moving the arcuate trajectory of the recording paper ejecting pin, so the recording paper ejection mechanism is greatly simplified and compact. In addition, cost reductions were achieved.

[Brief explanation of the drawing]

Figure f: tS1 to Figure f: ttJS show an embodiment of the present invention, where Figure m1 is a perspective view of the recording paper ejection mechanism of the printer before the recording paper ejecting operation, and Figure 2 is a perspective view of the recording paper ejecting mechanism of the printer during the same recording paper ejecting operation. 3 is a plan view of the vicinity of the recording paper ejection W1 structure, FIG. 4 is an overall perspective view of the printer, FIG. 5 is an explanatory diagram of the printing device section, and FIG. 6 is a diagram of the conventional recording paper ejection mechanism. FIG. B... Recording paper ejection mechanism, 1... Ink ribbon cassette, 2... Cassette insertion slot, 3... Paper feed case, 4
...Paper feed case inlet/outlet (recording paper insertion slot), 5...
・Recording paper, 6... Recording paper outlet, 7... Printer,
7a...Front panel, 20...Feed roller, 21.
...Record U paper stand, 21g...front edge, 21b...arc-shaped elongated hole, 21c...rear edge, 22...shaft, 23...
7-me, 24...recording paper push-out pin, 25...motor.

Claims (1)

[Claims] A cassette insertion slot into which an ink ribbon cassette is inserted, a recording paper insertion slot into which a sheet of recording paper is inserted, and a recording paper ejection port through which the recording paper after printing is ejected are all located on the front of the printer main body. A recording paper ejection mechanism in a printer equipped with the above-mentioned printer includes a feed roller that sends the printed recording paper in the width direction of the printer body, a recording paper base that receives the recording paper fed by the feed roller, and a recording paper base that receives the recording paper fed by the feed roller. An arm is provided to be rotatable back and forth in a plane parallel to the recording paper base around an axis located near a side end; 1. A recording paper ejecting mechanism for a printer, comprising a recording paper ejecting pin that moves in an arcuate trajectory from the rear edge of the stand toward the front edge.