JPS6321166A - Paper guide construction - Google Patents

Abstract

PURPOSE:To minimize the possibility of paper jamming, by cylindrically forming parts of pressure rollers corresponding to a paper guide member for guiding a paper to a printing surface, forming parts of the rollers extended toward edges of the paper in a spindle-like shape, and rotatably disposing the pressure rollers symmetrically on a shaft. CONSTITUTION:A platen 1 is rotatably supported on frames, and both ends of guide shafts 5a, 5b provided for guiding a carrier frame 4 supporting a printing head 2 and a paper guide 3 thereon so that the carrier frame 4 can be moved leftward and rightward in parallel to the platen 1 are fixedly supported. The platen 1 is provided with a pressing shaft 6 parallel thereto, and two pressure rollers 7, 8 having a spindle-like shape rotatably supported on the shaft 6 are arranged symmetrically. The shaft 6 is constantly energized toward the platen 1 by the tension of a spring. A paper 9 is passed between the paper guide 3 on the carrier frame 4 and the platen 1, is guided by the guide 3 to the pressure rollers 7, 8, and is passed between the platen 1 and the rollers 7, 8.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a paper guide member provided on a carrier of a printer device and a roller shape for pressing printing paper against a printing surface.

[Conventional technology]

Conventionally, this type of paper guide member and roller for pressing the paper against the printing surface have a cylindrical shape and are rotatably held on a pressure shaft.

[Problem that the invention seeks to solve]

As mentioned above, the conventional paper guide member and the pressure roller for pressing the paper against the printing surface have a cylindrical outer shape.
It was rotatably held on a shaft. Therefore, if the edges of both ends of the paper are curled in the opposite direction to the printing surface, if the paper passes through the gap between the printing surface and the paper guide member and passes between the printing surface and the pressure roller, the edges of the paper will be smooth. However, the paper has the disadvantage that it does not get caught in the pressure roller part, causing a paper jam.

[Means for solving problems]

In the present invention, the part of the pressure roller corresponding to the paper guide member for guiding the paper to the printing surface is cylindrical, and the part extending toward the edge of the paper is shaped like a subundle, and the pressure roller with this shape is mounted symmetrically on the shaft. It has a rotatable structure.

〔Example〕

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

Referring to FIG. 1, a platen 1 is rotatably held by a frame (not shown), and a carrier frame 4 carrying a print head 2 and a paper guide 3 is attached to the platen 1.
A guide designed to allow you to move left and right in parallel with @
The configuration is such that r+zn Q of 5a and 5b is held fixed.

Further, on the platen 1, there is a pressure contact shaft 6 parallel to the platen, and on the pressure contact shaft, two spindle-shaped pressure contact rollers 7.8, which are rotatably held, are arranged symmetrically.
In the C structure, the pressure shaft 6 is constantly pressed in the direction of the platen 1 by spring tension (not shown).

To explain the operation, the paper 9 passes between the paper guide 3 on the carrier frame 4 and the platen 1, is guided by the paper guide 3 to the pressure roller 7.8, and passes between the platen 1 and the pressure roller 7.8. .

〔Effect of the invention〕

According to the present invention, due to the above-described counterfeiting, the printing paper that passes through the gap between the platen and the paper guide member is pressed against the paper guide at a point near the center of the paper even if the paper edge is curled in the opposite direction to the printing surface. Since the structure is such that the outer side of the paper is caught by the roller and drawn into the pressure roller, the paper can be wound around the platen regardless of the edge curl of the paper, so that paper jams 41 can be prevented to a minimum.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of one embodiment of the present invention.

Claims (1)

[Claims] A paper guide member having the same shape is provided on the carrier parallel to the printing surface, and a window is formed near the center of this paper guide member so that the print head tip and the ink ribbon can be exposed to the printing surface. A paper guide comprising two rotating rollers for pressing the printing paper that has passed through the gap between the paper guide members onto the printing surface, and the rotating rollers are held in a spindle shape and rotatably symmetrically on a pressure shaft. structure.