JPH07314832A - Journal printer - Google Patents

Abstract

PURPOSE:To take up a roll paper on a take-up spool such that the outside face of the roll paper is in a white state by mounting a printed roll paper on the take-up spool with its printed face inside and by driving the roll paper in the take-up direction by a drive motor. CONSTITUTION:A roll paper 4 is set in a paper holder 5. Its head end is pulled out, wound on a platen 2, passed in a paper guide 7, wound on a core of a take-up spool 6 with the printed face inside and fixed. By rotating a drive motor 3 in the direction of an arrow A, a gear 8 is rotated in the direction of an arrow B by a belt 10, the platen 2 is rotated in the direction of an arrow C through a gear 2a so as to convey the roll paper 4 to the side of the take-up spool 6. A gear 9 is rotated in the direction of an arrow F by the rotation of the drive motor 3 through a belt 11, the take-up spool 6 is rotated in the direction of an arrow H through an intermediate gear 12 and a gear 6a so as to take up the roll paper 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a journal printer using roll paper, and more particularly to a roll paper winding mechanism.

[0002]

2. Description of the Related Art FIG. 3 is a front view showing an example of a conventional journal printer, FIG. 4 is a perspective view showing a winding state of roll paper on a take-up spool shown in FIG. 3, and FIG. FIG. 3 is a perspective view showing a printed state of roll paper.

As shown in FIG. 3, a conventional journal printer using a roll paper rolls a roll holder 4 held by a paper holder 5 for holding a roll paper 4 for printing. Platen 2 to be transported and Platen 2
The print head 1 that prints on the roll paper 4 wound around the paper, the paper guide 7 that guides the travel of the roll paper 4 printed by the print head 1, and the paper guide 7 that is conveyed while being guided. A take-up spool 16 for winding the roll paper 4 and a gear 8 for driving the rotation of the platen 2 by meshing with a gear 2a provided on the platen 2.
The drive motor 3 that drives the rotation of the gear 8, the belt 10 that transmits the rotation of the drive motor 3 to the gear 8, and the rotation of the take-up spool 16 that meshes with the gear 16 a provided on the take-up spool 16. And a belt 21 that transmits the rotation of the drive motor 3 to the gear 19.

In the conventional journal printer configured as described above, the roll paper 4 is set on the paper holder 5, the leading end thereof is pulled out and wound around the platen 2, and the leading end is further pulled out and wound through the paper guide 7. It is guided to the take-up spool 16 and wound around the core 16b of the take-up spool 16 to be fixed.

When the drive motor 3 is rotated in the direction of arrow A in this state, the rotation of the drive motor 3 is transmitted to the gear 8 by the belt 10 and the gear 8 rotates in the direction of arrow B. The rotation of the gear 8 is transmitted to the gear 2a to rotate the platen 2 in the direction of the arrow C, and the roll paper 4 is taken up by the take-up spool 16
Transport to.

The rotation of the drive motor 3 is also transmitted to the gear 19 by the belt 21 and the gear 19 rotates in the direction of arrow D. The rotation of the gear 19 is transmitted to the gear 16a to rotate the take-up spool 16 in the direction of arrow E, and the roll paper 4 conveyed by the platen 2 is taken up.

In this way, the platen 2 and the take-up spool 16 are driven by one drive motor 3, the roll paper 4 is conveyed while printing is performed by the print head 1 on the platen 2, and the take-up spool 16 is made up of the roll paper 4. It is wound up with.

As shown in FIG. 4, the winding state of the roll paper 4 on the take-up spool 16 at this time is such that the print surface 4b of the roll paper 4 is on the outside.
It is wound around the core 16a of No. 6. The relationship between the roll paper 4 and the print surface 4b of the print head 1 is as shown in FIG.
Since the print head 1 prints on the outer surface, the outer surface is the print surface 4b.

[0009]

As described above, in the conventional journal printer, since the roll paper is wound on the take-up spool so that the printing surface is on the outside, the inner surface is wound on a blank sheet. Taken. Therefore, the roll paper has a problem that the running cost of the roll paper is high and a large storage space is required because only one side of the roll paper is used and stored.

[0010]

SUMMARY OF THE INVENTION A journal printer according to the present invention comprises a platen for winding and conveying roll paper, a print head for performing printing on the roll paper wound around the platen, and a platen for the platen. In a journal printer including a drive motor that drives rotational movement and a take-up spool that winds up the roll paper conveyed by the platen, the take-up spool is mounted with the print surface of the roll paper inside. And driving the winding spool in the winding direction of the roll paper by the drive motor.

That is, the journal printer of the present invention has been carried by the platen which winds and conveys the roll paper, the print head which prints on the roll paper wound around the platen, and the platen. A take-up spool for mounting and winding the roll paper with the printing surface inside, a drive motor for driving the rotational movement of the platen and the take-up spool, and conveying the roll paper to the take-up spool. A belt and a gear for transmitting rotational movement of the drive motor to the platen in a direction,
A belt, a gear, and an intermediate gear that transmit the rotational movement of the drive motor to the take-up spool in a direction in which the roll paper is taken up are provided.

[0012]

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

FIG. 1 is a front view showing an embodiment of the present invention, and FIG. 2 is a perspective view showing a winding state of roll paper on the take-up spool of the embodiment shown in FIG.

In FIG. 1, a print head 1, a platen 2, a drive motor 3, a roll paper 4, a paper holder 5, a paper guide 7, a gear 8 and a belt 1 are provided.
The structure and operation of 0 are the same as the structure and operation of the portions corresponding to the conventional example of FIG.

The take-up spool 6 is, as shown in FIG.
It has almost the same structure as the take-up spool 16 of the conventional journal printer shown in FIG.
The core 6b is wound so that a is on the inside. Further, the gear 6a provided on the take-up spool 6
Engages with the gear 9 via the intermediate gear 12, and the gear 9 is transmitted with the rotation of the drive motor 3 by the belt 11. Therefore, when the drive motor 3 rotates in the arrow A direction, the gear 9 rotates in the arrow F direction, and the rotation of the gear 9 causes the take-up spool 6 to rotate in the arrow H direction in order to rotate the intermediate gear 12 in the arrow G direction. Rotate to.

In the journal printer constructed as described above, the roll paper 4 is set on the paper holder 5, the leading end thereof is pulled out and wound around the platen 2, the leading end is further pulled out, and the take-up spool is passed through the paper guide 7. 6 and is wound around the core 6b of the take-up spool 6 and fixed so that the printing surface 4a is on the inside.

When the drive motor 3 is rotated in the direction of arrow A in this state, the rotation of the drive motor 3 is transmitted to the gear 8 by the belt 10 and the gear 8 rotates in the direction of arrow B. The rotation of the gear 8 is transmitted to the gear 2a to rotate the platen 2 in the direction of arrow C and convey the roll paper 4 to the take-up spool 6.

The rotation of the drive motor 3 is also transmitted to the gear 9 by the belt 11 so that the gear 9 rotates in the arrow F direction. The rotation of the gear 9 is transmitted via the intermediate gear 12 to the gear 6
Then, the take-up spool 6 is rotated in the direction of the arrow H by being transmitted to a, and the roll paper 4 conveyed by the platen 2 is taken up.

The relationship between the roll paper 4 and the printing surface 4a of the print head 1 at this time is the same as in the conventional example shown in FIG. 5, in which the outer surface of the roll paper 4 delivered from the paper holder 5 is printed. Since the print is performed by the head 1, the outer surface is the print surface 4a. On the other hand, in the winding state of the roll paper 4 on the take-up spool 6, as shown in FIG. 2, the roll paper 4 is wound around the core 6a of the take-up spool 6 so that the printing surface 4a of the roll paper 4 is on the inside. Therefore, the roll paper 4 wound on the take-up spool 6 has a blank outer surface. Therefore, the roll paper 4 removed from the take-up spool 6 can be set in the paper holder 5 again and used.

[0020]

As described above, in the journal printer of the present invention, the printed roll paper is mounted on the take-up spool so that the printing surface is on the inside, and the drive motor drives the take-up spool to roll the roll paper. By driving in the take-up direction, it is possible to take up the roll paper on the take-up spool so that the outer surface becomes a blank sheet.Therefore, the roll paper removed from the take-up spool is set again in the paper holder. There is an effect that it can be used. Therefore, both sides of the roll paper can be used, and the running cost of the roll paper can be reduced and the storage space can be reduced.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a winding state of roll paper on the winding spool of the embodiment of FIG.

FIG. 3 is a front view showing an example of a conventional journal printer.

4 is a perspective view showing a winding state of roll paper on the winding spool of the example of FIG. 3. FIG.

5 is a perspective view showing a printing state of roll paper in the example of FIG. 3. FIG.

[Explanation of symbols]

 1 print head 2 platen 3 drive motor 4 roll paper 4a ・ 4b 5 paper holder 6 ・ 16 take-up spool 6b ・ 16b core 7 paper guide 6a ・ 8 ・ 9 ・ 16a ・ 19 gear 10 ・ 11 ・ 21 belt 12 intermediate gear

Claims (2)

[Claims] 1. A platen that winds and conveys roll paper, a print head that prints on the roll paper wound around the platen, a drive motor that drives rotational movement of the platen, and the platen. In a journal printer including a take-up spool for taking up the roll paper conveyed by, the take-up spool is configured so that the print surface of the roll paper is mounted inside.
A journal printer, comprising: driving the take-up spool in a direction in which the roll paper is taken up by the drive motor. 2. A platen that winds and conveys roll paper, a print head that prints on the roll paper that is wound around the platen, and a print surface that prints the roll paper that is conveyed by the platen. A take-up spool that is mounted inside and wound up, a drive motor that drives the rotational movement of the platen and the take-up spool, and a rotation of the drive motor that conveys the roll paper toward the take-up spool. A journal printer comprising: a belt and a gear that transmit a motion to the platen; a belt and a gear that transmit a rotational motion of the drive motor to the take-up spool in a winding direction of the roll paper; and an intermediate gear. .