JPH0474666A - Sheet guide device - Google Patents

Abstract

PURPOSE:To ensure that a sheet is supplied to a space between a pressure roller and a platen by arranging upper sheet guide pieces at an offset position to lower sheet guide pieces and the latter at an offset position to the former in a printing sheet width direction. CONSTITUTION:Pressure rollers 4a, 4b are pressed to a platen by a pressure part 5. A sheet 7 is supplied from a space between an upper sheet guide 6a and a lower sheet guide 6b provided at a printing sheet feed orifice behind the platen 1. In addition, projecting pieces 10a to 10d, 11a to 11d are arranged in parallel with the running direction of the sheet 7, on a surface where the upper sheet guide 6a and the lower sheet guide 6b are opposed to each other. The guide pieces 10a to 10d, 11a to 11d are arranged at an offset position to the other in the width direction of the sheet 7. A distance (t2) between their apexes is either equal to or slightly smaller than the thickness (t1) of the sheet 7. Under this constitution, the sheet 7 can be introduced in a space between the pressure roller 4a and the platen 1 as the sheet 7 is straightened, if curved at the tip.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper guide device for guiding the running of printing paper in order to supply printing paper in a printer device.

[Conventional technology]

FIG. 3 is a sectional view showing an example of a conventional paper guide device.

In a printer device, a conventional paper guide device that guides the running of print paper in order to supply it is located behind the platen 11 of the printer device (print head 1), as shown in FIG.
3 and the opposite side of the card holder 12) are provided with an upper paper guide 16a and a lower paper guide 16b at the printing paper supply port, which is oval so that the paper 7 can be inserted between them.

The interval is sufficiently wide with respect to the paper 7, and does not particularly restrict the thickness of the paper to be inserted.

[Problem to be solved by the invention]

As mentioned above, the paper guide device of conventional printer devices does not regulate the thickness of the paper to be inserted, so there is a large amount of play between the paper guide device and the paper. There is a problem in that it is difficult to supply between the reference numerals 14a and 14b in FIG. 3 and the platen. Another disadvantage is that a sheet of paper with a curved tip abuts against the pressure roller or platen and cannot be inserted between them.

[Means to solve the problem]

A paper guide device of the present invention includes an upper paper guide and a lower paper guide provided at a print paper supply port of a printer device;
A plurality of convex veins are provided on opposing surfaces of each of the upper paper guide and the lower paper guide, the veins of the upper paper guide and the lower part being parallel to the running direction of the printing paper. The veins of the paper guides are arranged so as to be shifted from each other in the width direction of the printing paper.

[Actual example]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG.
FIG. 2 is a side view of the illustrated embodiment as seen from the direction of arrow A. FIG.

In FIGS. 1 and 2, pressure rollers 4a and 4
b is pressed against the platen 1 by the pressure unit 5.

The paper 7 is supplied from between an upper paper guide 6a and a lower paper guide 6b provided at a print paper supply port behind the platen 1 (on the opposite side of the print head 3 and card holder 2). A plurality of convex veins 10a to 10d and veins 11a to lid are provided on opposing surfaces of the upper paper guide 6a and the lower paper guide 6b, respectively, in parallel to the running direction of the paper 7. Vein portions 10a to 10d and vein portion 11a
~11d are arranged to be shifted from each other in the direction of the width of the paper 7, and the distance t2 between their vertices is equal to the thickness t of the paper 7.
It is equal to □ but slightly smaller.

With this configuration, if the leading edge of the sheet 7 is curved, it is corrected, so that the sheet 7 can be reliably fed between the pressure roller 4a and the platen 1.

〔Effect of the invention〕

As explained above, the paper guide device of the printer device of the present invention includes a plurality of convex veins in parallel to the running direction of the printing paper on the opposing surfaces of the upper paper guide and the lower paper guide. , by making the distance between the vertices equal to or slightly smaller than the thickness of the paper, there is an effect that the paper can be reliably fed between the pressure roller and the 1 latin, and the leading edge is curved. In this case, the effect is that it can be corrected and supplied.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG.
FIG. 3 is a side view of the embodiment shown in the figure as seen from the direction of arrow A, and FIG. 3 is a sectional view showing an example of a conventional paper guide device. 1・11・・・Platen, 2・12・・・・・・
Card holder, 3/13...Print head, 4a
・4b・14a・14b・・・Pressure roller, 5-
...pressure section, 6a, 16a... upper paper guide, 6b, 16b... lower paper guide, 7...
...Paper, 10a-10d, 11a-lid...
-... Pulse area. Man/Sono

Claims (1)

[Claims] An upper paper guide and a lower paper guide provided at a print paper supply port of the printer device, and a plurality of paper guides provided on opposing surfaces of each of the upper paper guide and the lower paper guide in parallel to the running direction of the print paper. a convex vein, and the vein of the upper paper guide and the vein of the lower paper guide are arranged so as to be shifted from each other in the width direction of the printing paper. .