JP2000143042A - Printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide simple structure of a roll paper storage section capable of reducing cost, facilitating the change of roll paper, and corresponding to paper rolls having a plurality of paper widths. SOLUTION: This printer 1 is provided with a main body housing 2, a main body cover 3 which is turned in arrow directions AB and is opened or closed, a printing part 4, a platen 5, an L-shaped angle member 8 locking a roll paper, a support shaft 10 connecting the L-shaped angle member 8 with the main body housing 2, a spring 11 giving a predetermined energizing force to the L-shaped angle member 8, an L-shaped connection rod 6 which supports an arm part 8b of the L-shaped angle member 8 and is turned in arrow A'B' directions, and a connection rod guide 7 guiding an L-shaped angle support part of the connection rod 6 along an oblique face 7a when the main body cover 3 is turned, opened, and closed (arrow AB directions). The L-shaped angle member 8 is vertically moved through, the connection rod 6 by corresponding to turning, opening, and closing (arrow AB directions) of the main body cover 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a printer used for an electronic cash register of a system. In particular, the present invention relates to a printer containing a roll-shaped recording medium before printing.

[0002]

2. Description of the Related Art Conventionally, as a printer accommodating a recording medium such as roll paper before printing, a public utility model publication has been proposed.
As disclosed in JP-A-139740, there is known an apparatus having a structure in which a cover is opened and roll paper is set. In many of these printers, when the cover is opened, the roll paper is set in a recessed position.

[0003]

However, in such a conventional printer, the roll core after the roll paper has been used up is moved further to the bottom of the recessed storage portion, so that the roll paper is not used. At the time of replacement, the hands had to be put in a narrow place to remove the core. For this reason,
There is a problem that it takes time to replace the roll paper, and a tool must be used for a type having a narrow paper width. Accordingly, an object of the present invention is to provide a printer that has a simple structure of a roll paper storage portion, is inexpensive, can easily replace roll paper, and can handle roll paper of various types of paper width. It is to be.

[0004]

In order to solve the above-mentioned problems, a printer according to a first embodiment of the present invention has an accommodation portion for accommodating a roll-shaped recording medium at a predetermined position and having an opening at an upper portion thereof. In a printer having a printing unit for printing characters and symbols on a recording medium in a storage unit, an opening is opened from a predetermined position in conjunction with an opening and closing operation of a lid that supports a core of the recording medium and covers the opening. A recording medium supporting means for moving the recording medium to the side.

According to another aspect of the present invention, there is provided a printer according to a second aspect of the present invention, which has an opening at an upper portion thereof for storing a roll-shaped recording medium at a predetermined position, In a printer having a printing unit for printing characters and symbols on a medium, a cover covering an opening, an L-shaped angle member supporting a core of a recording medium, and a cover and an L-shaped angle member are connected. And a connecting rod member that moves the L-shaped angle member in conjunction with the opening and closing operation of the lid that covers the opening. In this printer, the connecting rod member may move in conjunction with the opening and closing operation of the lid along the slope provided in the housing.

Accordingly, the structure of the roll paper storage portion is simplified, the cost is reduced, and the roll paper can be easily replaced.

In the above-mentioned printer, the recording medium supporting means includes a roll paper engaging portion for inserting a core of the recording medium, a core pressing member engaging with the roll paper engaging portion, and a core pressing member for connecting the core to the recording medium. An elastic body biasing in the width direction. This elastic body may be a spring.

Thus, it is possible to cope with roll paper having a plurality of types of paper width. Also, when you open the lid,
The core of the recording medium can be moved to a position where it can be easily taken out.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 3 is an overall perspective view of one embodiment of the present invention, in which 1 indicates a printer main body, and shows a state in which printing is performed on a recording paper 19. Reference numeral 30 denotes an operation panel provided on the printer body.

FIG. 4 is a schematic side view of the printer 1.
Is a main body housing, 3 is a main body cover, 4 is a printing section having a thermal head, 5 is a platen, 19 is a roll of recording paper (hereinafter referred to as roll paper), and 20 is a recording paper in the main body. Each part is shown.

FIG. 1 is a perspective view of the inside of a printer 1 according to the present embodiment as viewed from the front. As shown in FIG.
The printer 1 includes a main body housing 2, a main body cover 3 that is connected to an upper rear portion of the main body housing 2 and that opens and closes by rotating in the direction of arrow AB, and a printing unit 4 that prints characters and symbols on roll paper 19. A platen 5 provided inside the front of the main body cover 3 so as to be located at a position facing the thermal head of the printing unit 4 when the main body cover 3 is closed. The configuration so far is a configuration generally found in a thermal printer.

The printer 1 further has a recording paper supporting means, which comprises an L-shaped angle member 8 and a part of the L-shaped angle member, which is inserted into the roll paper core 9 of the roll paper 19 and the roll paper 19. And a roll paper locking portion 8c that locks the inside of the printer 1 and a rear upper portion of the main body housing 2,
A support shaft 10 for connecting the L-shaped angle member 8 to the main body housing 2 and a spring 11 for applying a predetermined bias to the roll paper core 9
L, which is connected to the inside of the main body cover 3 and supports the arm portion 8b of the L-shaped angle member 8, and rotates in the direction of arrow A'B 'corresponding to the opening and closing (arrow AB) of the main body cover 3.
A connecting rod 6, which is a U-shaped connecting member, and a connecting rod guide 7 that guides the L-shaped angle support portion 6a of the connecting rod 6 along the inclined surface 7a when the main body cover 3 is opened and closed (arrow AB). ing. FIG. 2 is an enlarged view showing the roll paper engaging portion 8c of the L-shaped angle member 8. FIG.
As shown in the figure, a stopper 10a provided on the locking portion 8c
A spring 11 is arranged between the spring 11 and the stopper 10b.
This spring 11 urges the core pressing member 12 in the direction of arrow D in the figure. The stopper 10b is provided so that the spring 11 does not fall out of the locking portion. Note that another elastic body, for example, a rubber material, may be used instead of the spring 11 as long as it applies a predetermined bias to the L-shaped angle member 8.

The operation of exchanging roll paper in the printer of the present invention having the above configuration will be described below with reference to FIGS.

First, when the end of the roll paper approaches, the operation panel 3 is provided to the user by a recording paper end detector (not shown).
This is displayed on a 0 LED or the like, and the user opens the main body cover 3. The body cover 3 rotates in the direction of arrow A.
While the main body cover 3 is gradually opened, the connecting rod 6 rotates in the direction of arrow A ′ inside the housing 2, and the L-shaped angle support portion 6 a of the connecting rod 6 moves upward along the slope 7 a of the connecting rod guide 7. To be lifted.

At this time, when the connecting rod 6 reaches a predetermined position, the L-shaped angle supporting portion 6a of the connecting rod 6
The arm portion 8b of the character angle member 8 contacts. And
In conjunction with the upward movement of the L-shaped angle support 6a, the spindle 1
0 and the L-shaped angle member 8 about the connecting portion 8a
Arm portion 8b rotates in the direction of arrow A. As a result, the roll paper engaging portion 8c of the L-shaped angle member 8 moves upward in an arc along with the roll paper core 9.

When the main body cover 3 is opened to a predetermined position,
The connecting rod 6 is separated from the slope 7a of the connecting rod guide 7. Thereafter, when the main body cover 3 rotates in the direction of arrow A, the connecting rod 6 moves upward in the vertical direction.

When the main body cover 3 is rotated to a completely open position as shown in FIG. 1, the main body cover 3 is locked at the open position by a locking portion (not shown). At this time,
The roll paper engaging portion 8c of the L-shaped angle member 8 is located outside the main body housing 2. Further, since the roll paper is urged by the spring 11 in the width direction of the printer, if the side paper of the main body housing is not regulated, the roll paper is pushed in the direction of arrow C and moves to a position where it can be easily pulled out.
Then, the roll paper core 9 is pulled out from the roll paper engaging portion 8c of the L-shaped angle member 8 in the direction of arrow C, and a new roll paper (not shown) is attached.

At this time, the L-shaped angle member 8 is pushed in the direction opposite to the biasing direction D of the spring 11 according to the width of the roll paper. That is, a biasing force (arrow D) corresponding to the width of the roll paper 19 is applied to the L-shaped angle member 8 by the spring 11.

The new roll paper 19 is inserted into the L-shaped angle member 8.
Is attached to the roll paper latching portion 8c, the main body cover 3 is rotated in the direction of arrow B to load the roll paper into a predetermined position of the main body housing 2. At this time, the connecting rod 6 moves on the slope 7a of the connecting rod guide 7 in a stroke opposite to the above-described operation.
Move down along.

As described above, according to the printer 1 of the present invention, the L-shaped angle member 8 holding the roll paper is brought into contact with the connecting rod 6 interlocking with the turning movement of the main body cover 3. In addition, the roll paper core 9 of the roll paper can be moved up and down in conjunction with the rotational movement of the main body cover 3, and the replacement of the recording paper becomes easy.

Also, since the core pressing member 12 urged by the spring 11 is attached to the locking portion 8c of the L-shaped angle member 8 for locking the roll paper, the stopper 10
By adjusting the width of the roll paper within the range of the width of the stopper 10b and the width of the stopper 10b, the roll paper can be moved in one direction.

[0023]

As described above, according to the printer of the present invention, the L-shaped angle member holding the roll paper is
The structure of the roll paper storage area is simple because the roll paper roll core can be moved up and down in conjunction with the rotation movement of the main body cover by contacting with the connecting rod that is linked to the rotation movement of the main body cover. This makes it possible to easily replace roll paper without cost.

In addition, since the core pressing member for locking the roll paper is urged by a spring, it is possible to cope with roll paper having a plurality of types of paper widths, and the core is opened when the main body cover is opened. Has been moved to a position where it can be easily taken out, making it easier to replace roll paper.

[Brief description of the drawings]

FIG. 1 is a perspective view of the inside of an embodiment of a printer according to the present invention as viewed from the front.

FIG. 2 is an enlarged view of a roll paper locking portion of an L-shaped angle member of the printer according to the present invention.

FIG. 3 is an overall perspective view of the printer according to the embodiment of the present invention.

FIG. 4 is a schematic side view of the printer of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Printer 2 Main body housing 3 Main body cover 4 Printing part 5 Platen 6 Connecting rod 6a L-shaped angle support part 7 Connecting rod guide 7a Slope 8 L-shaped angle member 8a Connecting part 8b Arm part 8c Roll paper locking part 9 Roll paper core 10 Support shaft 10a, 10b Stopper 11 Spring 12 Core holding member 19 Roll paper

Claims (5)

[Claims] 1. A printer comprising: a storage section having an opening at an upper portion for storing a roll-shaped recording medium at a predetermined position; and a printing section for printing characters and symbols on the recording medium in the storage section. And a recording medium supporting means for supporting a core of the recording medium and moving the recording medium from the predetermined position to the opening side in conjunction with an opening and closing operation of a lid covering the opening. And the printer. 2. A printer comprising: a storage portion having an opening at an upper portion for storing a roll-shaped recording medium at a predetermined position; and a printing portion for printing characters and symbols on the recording medium in the storage portion. A cover that covers the opening; an L-shaped angle member that supports a core of the recording medium; and an opening / closing operation of the cover that connects the cover and the L-shaped angle member and covers the opening. A connection rod member for moving the L-shaped angle member in conjunction with the printer. 3. The printer according to claim 2, wherein the connecting rod member moves in conjunction with an opening and closing operation of the lid along a slope provided in the housing. 4. The recording medium supporting means includes a roll paper engaging portion for inserting a core of the recording medium, a core pressing member engaged with the roll paper engaging portion, and a width of the recording medium which is a width of the recording medium. The printer according to claim 1, further comprising an elastic body biased in the direction. 5. The printer according to claim 4, wherein the elastic body is a spring.