JPH11189356A - Structure of machine grazed paper holder, and small-sized printer with the same machine grazed paper holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a strip of recording paper unreeled out of a machine grazed paper holder from being directed obliquely. SOLUTION: A machine grazed paper holder 6B includes on its lower cover 6-1 a leading guide part 10 that leads a strip of recording paper P2 unreeled from a machine grazed paper P1 above the centerline of the holder 6B and above an insertion opening 4 made in a printer main body 1. The leading guide part 10 extends parallel to the holder centerline. The strip of recording paper P2 is folded back at the upper end of the leading guide part 10 and then inserted into the insertion opening 4. If the machine grazed paper P1 leans about in the holder 6B, the leading guide part 10 corrects the obliquity of the strip of recording paper P2 across the holder centerline.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to the structure of a roll paper holder provided in a small printing device.

The term "small printing device" as used herein is a general name of a portable device having a function of printing a processing result or information sent from an external device on recording paper.

[0003]

2. Description of the Related Art FIG. 5 shows an overall configuration of a small-sized printing apparatus having a conventional roll paper holder.

On the upper surface side of the printing apparatus main body 1, a display unit 2 for displaying a processing result, an input unit 3 for inputting information, an insertion slot 4 for inserting recording paper, and an ejection opening 5 for discharging printed recording paper. Etc. are provided.

[0005] In the printing apparatus main body 1, processing means (computer), printing means (printer) and the like (not shown) are incorporated. The printing means is arranged between the insertion port 4 and the discharge port 5.

The printing apparatus main body 1 includes roll paper (recording paper).
A roll paper holder 6A containing P1 is provided.

FIG. 6 shows the configuration of the roll paper holder 6A.

The roll paper holder 6A comprises a lower cover 6-1 fixed to the printing apparatus main body 1 by using a boss 7, and an upper cover 6 connected to the lower cover 6-1 by a hinge 8.
-2. The upper cover 6-2 covers the insertion slot 4.

[0009] The roll paper P1 is indicated by an arrow A on the upper cover 6-2.
It is opened by rotating in the direction and stored in the holder 6A. At this time, the roll paper P1 is placed on the lower cover 6 curved upward.
-1 so that it can rotate (roll). There is a predetermined gap G (not shown) between the width direction side end of the roll paper P1 and the side wall of the lower cover 6-1.
, The roll paper P1 can be rotated. This gap G is set in consideration of the dimensional tolerance of the roll paper width.

A roll paper housed in the holder 6A,
That is, the recording paper P1 is pulled out from the drawer port 9 and inserted into the insertion port 4 of the printing apparatus main body 1. FIGS. 5 and 6 show a state in which the printed recording paper P <b> 2 inserted from the insertion port 4 and printed by the printing unit is discharged from the discharge port 5. When the roll paper P1 in the holder 6A is pulled out from below, the roll paper P1 rolls in the direction of arrow B (clockwise) on the lower cover 6-1.

The outlet 9 of the holder 6A is disposed below the insertion port 4 of the printing apparatus main body 1, and the outlet 9 is provided.
The recording paper P <b> 2 pulled out is guided by the printing apparatus main body 1 and inserted into the insertion slot 4.

[0012]

However, the roll paper holder 6A of the prior art described above has the following problems.

That is, the direction of the recording paper P2 inserted into the insertion slot 4 of the printing apparatus main body 1 must be oriented at a right angle to the center line O1 of the holder 6A. The recording paper P2 in this state can proceed straight in the printing apparatus main body 1 without skew.

However, in the conventional roll paper holder 6A, the recording paper P2 inserted into the insertion slot 4 may not be oriented at right angles to the center line O1 of the holder 6A.

This is because the presence of the gap G causes the roll paper P1 to rattle, causing a tilt between the center line of the roll paper P1 and the center line O1 of the holder 6A.

If the recording paper P2 inserted into the insertion slot 4 is not oriented in a direction perpendicular to the center line O1 of the holder 6A, the recording paper P2 moves obliquely. For this reason, the recording paper P2 is pressed against the side wall of the insertion slot 4 and cannot be moved, so that printing cannot be performed.

Accordingly, the present invention has been made in view of the above-mentioned circumstances, and ensures that the direction of a recording sheet pulled out from a holder and inserted into an insertion slot of a printing apparatus main body is aligned with respect to the center line of the holder. It is an object of the present invention to provide a structure of a roll paper holder that can be turned to a right angle direction.

[0018]

SUMMARY OF THE INVENTION In order to achieve the above object, according to the present invention, a roll paper for recording is stored in a holder in a rollable state, and the recording paper stored in the holder is stored in the holder. And a roll paper holder capable of being pulled out in a direction perpendicular to the center line of the roll paper.

In order to achieve the above object, the present invention has a drawer guide for guiding the recording paper drawn out of the holder to at least a position higher than a center line of the holder. .

[0020]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show the structure of a roll paper holder to which the present invention is applied.

In describing the configuration of the roll paper holder 6B, the same members as those of the above-described conventional roll paper holder 6A are denoted by the same reference numerals, and those which are not structurally and functionally unchanged will be described. The description is omitted.

The lower cover 6-1 of the roll paper holder 6B draws out the recording paper P2 drawn from the roll paper P1 to a position higher than the center line O1 of the holder 6B and the insertion opening 4 of the printing apparatus main body 1. A guide section 10 is provided. The pull-out guide section 10 is provided at the center line O1 of the holder 6B.
It is parallel to.

The recording paper P2 is folded at the upper end of the draw-out guide section 10 and inserted into the insertion slot 4. FIG. 2A shows this state. In this case, the recording paper P2 is smoothly folded back on the curved surface at the upper end of the drawer guide 10.

FIG. 2B shows a state where the recording paper P2 inserted into the insertion slot 4 of the printing apparatus main body 1 is pulled out by a printing operation.

When the recording paper P2 is pulled out, the roll paper P1 in the holder 6B moves upward on the lower cover 6-1 while rolling in the direction of arrow B as shown by the solid line. And
When the recording paper P2 has been pulled out, the roll paper P1 moves in the direction of arrow C by its own weight and returns to the position shown in the imaginary line.

In FIG. 2B, when the roll paper P1 rolls in the direction of the arrow B, the gap G causes the roll paper P1 to rattle, and the center line O2 of the roll paper P1 and the center line O1 of the holder 6B are shifted. An inclination occurs between them. This state is shown in FIG. When the roll paper P1 is pulled out while maintaining the tilted state, the drawn recording paper P2 is moved in the direction of arrow D and pressed against the side wall of the insertion slot 4.

When the center line O2 of the roll paper P1 and the center line O1 of the holder 6B are inclined, the center line O2 and the center line of the roll paper holder 6B are actuated by the draw-out guide unit 10. The inclination with respect to O1 can be corrected.

Next, referring to FIG. 4 (schematic diagram), the operation of the drawer guide 10 will be described. FIG. 4A shows a case where the drawer guide 10 is provided (the present invention), and FIG. 4B shows a case where the drawer guide 10 is not provided (the conventional example).

4 (a) and 4 (b), a is a plane on which the roll paper P1 is rotated to cause the inclination, b is a plane on which the drawn recording paper P2 moves, and O3 is a plane on which the roll paper P1 is inclined. O4 is the central axis that the drawn recording paper P2 rotates, and O5 is the central axis O4
, C is a rotation direction for causing the roll paper P1 to tilt about the axis O3, d and g are rotation directions of the recording paper P2 about the axes O4 and O5, and e is a drawn-out direction. The angle f at which the plane b on which the recording paper P2 moves and the plane a rotated to cause the roll paper P1 to incline intersects, and f is the traveling direction of the drawn recording paper P2.

In FIG. 4A, when the roll paper P1 rotates in the direction of arrow C, the force generated by the rotation is transmitted in the plane a, and the drawn recording paper P2 is moved in the direction of arrows d and g.
Try to rotate in the direction of. At this time, since the recording paper P2 pulled out along the pull-out guide portion 10 is quickly pulled upward, the angle e at which the plane a and the plane b intersect is close to 90 degrees. Therefore, the pulled out recording paper P2
Is not generated in the direction of arrow g, but only in the direction of arrow d. The rotational force in the direction of the arrow d twists the drawn recording paper P2.

Here, since the drawn recording paper P2 is pulled upward by the drawing guide section 10, it has a sufficient length to twist the drawn recording paper P2 by the rotation amount of the roll paper P1. I have.

Therefore, when the roll paper P1 is rotated and tilted, the tilt is absorbed by the twisting of the pulled out recording paper P2, and the pulled out recording paper P2 is not tilted. That is, the direction of the recording paper P2 is perpendicular to the center line O1 of the holder 6B.

Further, when the recording paper P2 is pulled out from the roll paper P1, the pull-out guide unit 10 controls the roll paper P1.
, The roll paper P1 tends to stay at the bottom of the lower cover 6-1 by its own weight. At that time, the pulled out recording paper P2 is roll paper P
The recording paper P2 pulled out by the frictional load is held by the pull-out guide portion 10 because it is pressed against the pull-out guide portion 10 by its own weight. Therefore, a force acts on the roll paper P1 so as to make the center line O2 of the roll paper P1 parallel to the pull-out guide section 10, and the roll paper P1
Is corrected in a direction parallel to the paper feeding direction.

In FIG. 4B, when the roll paper P1 rotates in the direction of the arrow C, the force generated by the rotation is transmitted in the plane a, and the drawn recording paper P2 is moved to the arrow d.
Attempts to rotate in the direction of g. At this time, the angle e at which the plane a intersects with the plane b has a small value because there is no drawing guide section 10 that lifts the drawn recording paper P2 upward. Therefore, the rotational force applied to the pulled-out recording paper P2 occurs in both directions of the arrows d and g, and the rotational force in the direction of the arrow g becomes a value that cannot be ignored. The rotational force in the direction of the arrow g acts so as to incline the drawn recording paper P2 in the direction of the arrow f with respect to the traveling direction.

Therefore, when the roll paper P1 is rotated and tilted, the tilt cannot be absorbed, and the drawn recording paper P2 is tilted in the direction of arrow f.

As a result, the recording paper P2 is sent in an oblique direction inclined in the feeding direction, and is pressed against the side wall of the insertion slot 4.

[0038]

As described above, according to the roll paper holder of the present invention, the roll paper holder has the drawer guide portion for guiding the recording paper pulled out from the holder to at least a position higher than the center line of the holder. Even if the center line of the roll paper and the center line of the holder are tilted when the recording paper is pulled out of the holder, the drawer guide unit makes the inclination of the recording paper pulled out of the holder perpendicular to the center line of the holder. To correct the direction.

For this reason, the recording paper pulled out from the holder is fed into the printing apparatus main body without being skewed and pressed against the side wall of the recording paper insertion slot.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a roll paper holder to which the present invention is applied.

FIG. 2 is a sectional view showing the configuration of the roll paper holder of FIG.

FIG. 3 is a plan view showing a state in which the roll paper in the roll paper holder of FIG. 1 is inclined.

FIG. 4 is a schematic diagram for explaining the difference between the case where the drawer guide is provided (FIG. 4A) and the case where the drawer guide is not provided (FIG. 4B) when the state of FIG. 3 occurs.

FIG. 5 is a perspective view showing the overall configuration of a small-sized printing apparatus having a conventional roll paper holder.

FIG. 6 is a cross-sectional view showing a configuration of a conventional roll paper holder.

[Explanation of symbols]

 4 Insertion opening 6B Roll paper holder 10 Pull-out guide O1 Center line of holder P1 Roll paper P2 Recording paper

Claims (4)

[Claims] 1. A recording roll paper is stored in a holder so that it can be rolled, and the recording paper stored in the holder can be pulled out in a direction perpendicular to the center line of the holder. A roll paper holder, comprising: a drawer guide portion for guiding the recording paper drawn from inside the holder to at least a position higher than a center line of the holder. 2. The structure of the roll paper holder according to claim 1, wherein the draw-out guide guides the recording paper to a position higher than a position of a recording paper insertion slot on a printing apparatus main body side. 3. The structure of the roll paper holder according to claim 1, wherein the pull-out guide portion is oriented in a direction parallel to a center line of the holder. 4. A small printing apparatus having a recording paper insertion slot for inserting recording paper pulled out from inside the roll paper holder, wherein the roll paper holder according to claim 1 is used as the roll paper holder. A small-sized printing device comprising: