JPS6229259Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a recording paper guide device for a printer, which selects the outlet for the recording paper depending on the application, prevents the recording paper from floating off the platen, and connects the recording paper to the print head. It is an object of the present invention to provide a recording paper guide device for a printer that can prevent stains caused by contact with paper and can also prevent paper jams.

In this invention, a slide cover is slidably provided on the top cover that covers the platen and print head, and a paper press/guide surface is integrally formed on the top cover to press the recording paper from the outside toward the platen immediately after it passes through the print head. A paper support/guide surface is formed on the front edge of the slide cover to support the recording paper guided from the paper presser/guide surface from the inner side and guide it upward, and the bottom surface of the slide cover curves the recording paper smoothly. Therefore, when the slide cover is slid backward, the recording paper is guided from the outlet formed at the front edge by the paper presser/guide surface and the paper support/guide surface. At this time, on the downstream side of the paper presser and guide surface that presses the outer surface of the recording paper, the recording paper is supported from the inner side by the paper support and guide surface, and the printing head is guided to the drawer while changing direction. At the front of the printer, use your own strength to hold the recording paper tightly against the platen to prevent it from getting dirty due to contact with the print head, or slide the slide cover forward to close the front outlet. Then, the recording paper is pulled out from the other outlet formed at the rear edge of the slide cover, and at this time, the recording paper guided by the paper presser and guide surface is further smoothly curved by the guide and guided to the rear outlet. This prevents the recording paper from being lifted from the platen due to distortion in the front of the print head, and also allows the recording paper to be smoothly fed out to prevent paper jams. It is designed to reduce the number of points and simplify the structure.

An embodiment of this invention will be explained based on the drawings.
Reference numeral 1 denotes a housing, and on both sides of the housing 1, a platen 3 having a dial 2 at one end, a plurality of presser rollers 4 and a guide shaft 5 arranged on the same axis are installed in parallel. This guide shaft 5 has a carriage frame 7 that holds the printing head 6.
is held so that it can slide freely.

Next, a top cover 8 is detachably attached to the upper part of the housing 1. A slide cover 9 is held on the top cover 8 so as to be slidable along the direction in which the recording paper 10 travels. Elastic pieces 11 are formed on both sides of the slide cover 9, and locking recesses 12 that elastically engage with these elastic pieces 11 are formed on both sides of the top cover 8.

Thus, outlet ports 13 and 14 are formed at the rear edge and front edge of the slide cover 9. Also,
The slide cover 9 has a serrated blade part 15 located on the rear side of the drawer opening 13, a knob 16, a plurality of ribs 17 located in a vertical plane passing through the center of the presser roller 4, and a front puller. A vertical paper support/guide surface 18 forming one side of the outlet 14 is integrally formed. An arcuate guide 19 is formed at the lower edge of the rib 17 and is inclined upward toward the rear outlet port 13 and whose radius center is located downward. Furthermore, the top cover 8 has a paper press/guide surface 20 located near the print head 6 and extending in the tangential direction of the platen 3, and a paper press/guide surface 20 located at a position forming one side of the opening edge of the front outlet 14. A serrated blade portion 21 is formed.

Note that the distance between the blade portion 21 and the front surface of the printing head 6 is determined to be 1 inch as the length along the arc of the platen 3.

In such a configuration, FIG. 2 shows a state in which the slide cover 9 is moved to the right and the front outlet 14 is opened, the recording paper 10 is inserted through the guide plate 22, and the dial 2 is rotated together with the platen 3 to start recording. Set paper 10. Each time the print head 6 is reciprocated and one line is printed, the platen 3 and presser roller 4 are rotated to feed the recording paper 10. Recording paper 10
Immediately after passing the front surface of the print head 6, the paper is guided in the tangential direction of the platen 3 while being pressed against the platen 3 side by the paper presser/guide surface 20, and is further supported from inside by the paper support/guide surface 18 and upwardly moved. be drawn out. Then, when the slide cover 9 is slid to the left after printing the last line, the recording paper 10 is pressed against the blade portion 20 by the paper support/guide surface 18 and cut. Therefore, when the next printing is performed in this state, an appropriate margin of 1 inch is automatically formed above the first line. Further, the recording paper 10 has a certain degree of stiffness, and if the inside of the recording paper 10 is supported by the paper support/guide surface 18 on the downstream side of the paper presser/guide surface 20 that presses the outside of the recording paper 10. The recording paper 10 is in close contact with the platen 3 in front of the print head 6, so that clear printing is performed and the recording paper 10 does not touch the print head 6 and get dirty.

Further, when the slide cover 9 is moved to the left as shown in FIG. Since the recording paper 10 is easily separated from the platen 3 with a smooth curve, the recording paper 10 does not float toward the front of the print head 6 at this time, and the recording paper 10 is prevented from becoming dirty and the printed records are The paper 10 is guided by a guide 19 and sent toward the rear outlet 13 without being caught, and is then folded or rolled up in a storage section (not shown). Moreover, these guides 19 are connected to the presser roller 4.
Since the recording paper 10 is located in a vertical plane passing through the guide 19 and the presser roller 4, the recording paper 10 is stabilized and does not shift in the left and right direction, eliminating the cause of meandering. This further helps prevent paper jams. Pulled out recording paper 1
0 can also be cut with the blade part 15 if necessary. Then, a paper presser and guide surface 20, a paper support and guide surface 18, a guide 19, and blade portions 15 and 21.
etc. are formed integrally with the top cover 8 and the slide cover 9, thereby reducing the number of parts and simplifying the structure.

Since this device is configured as described above, the recording paper can be pulled out from the drawer opening formed at the front edge of the slide cover by sliding it backwards while being guided by the paper presser and guide surface and the paper support and guide surface. At this time, on the downstream side of the paper presser and guide surface that presses the outer surface of the recording paper, the recording paper is supported from the inner side by the paper support and guide surface and guided to the outlet while changing the direction of the paper, thereby allowing the printing head to At the front, use your own strength to hold the recording paper tightly against the platen to prevent it from getting dirty due to contact with the print head, or slide the slide cover forward to close the front outlet. The recording paper can be pulled out from the other outlet formed at the rear edge of the slide cover, and at this time, the recording paper guided by the paper presser and guide surface is further smoothly curved by the guide and drawn into the rear outlet. By guiding the recording paper in front of the print head, it is prevented from being lifted from the platen due to distortion, and the recording paper is smoothly fed out to prevent paper jams. This has the advantage of reducing the number of parts and simplifying the structure.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is an exploded perspective view with a part cut away, Figure 2 is an enlarged vertical side view of the main part showing how to use the paper to pull it out from the front drawer, and Figure 3 shows how to pull the recorder from the rear drawer. Fig. 4 is a bottom view of the top cover with the front outlet open, and Fig. 5 is a bottom view of the top cover with the front outlet closed. It is a bottom view. 3...Platen, 4...Press roller, 6...Print head, 8...Top cover, 9...Slide cover, 10...Recording paper, 13-14...Outlet, 18...Paper support and guide surface , 19...Guide, 20...Paper presser and guide surface.

Claims (1)

[Scope of utility model registration request] A top cover is provided that is rotatably located upstream of the print head and that clamps a plurality of stacked sheets of recording paper together with the platen and sends it out to the front of the print head. The top cover is provided with a slide cover that moves forward and backward along the direction in which the recording paper travels, and the recording paper is moved between the front edge or rear edge of the slide cover and the top cover depending on the position of the slide cover. a paper press/guide which selectively forms a drawer opening for pulling out the recording paper, and presses the recording paper that has passed through the front surface of the print head from the outside of its winding diameter on the top cover and guides it in a direction along the outer peripheral surface of the platen; A surface is positioned near the print head and integrally formed, and the slide cover supports the recording paper that has passed through the paper press/guide surface from the inside of its winding diameter so as to be separated from the outer peripheral surface of the platen. A paper support/guide surface is integrally formed to guide the paper to the outlet formed by the front edge of the slide cover and the top cover, and the recording paper is placed in front of the slide cover on the lower surface of the slide cover. 1. A recording paper guide device for a printer, characterized in that an arcuate guide is formed to guide the paper backward along the paper support and guide surface and to form a substantially V-shape with the paper support/guide surface.