JPH07115517B2 - Ribbon cartridge for printing - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a print ribbon cartridge, and more particularly to a supply-side roller and a take-up-side roller, and a print ribbon is delivered from the supply-side roller. At the same time, the present invention relates to a printing ribbon cartridge in which printing is performed while being wound by a roller on the winding side.

[Outline of Invention]

The present invention relates to a print ribbon cartridge in which a print ribbon is fed from a supply-side roller, and printing is performed while being wound by a winding-side roller. A case for housing the rollers is provided, and a notch is provided in this case so that the other roller, for example, the roller on the take-up side is held by this notch, and when the cartridge is attached to the printer, The present invention relates to a ribbon cartridge for printing, which is a compact and simple structure in which the other roller, for example, the roller on the winding side is removed.

[Conventional technology]

For example, in a thermal printer, a ribbon ribbon for printing as disclosed by the applicant of the present application in Japanese Patent Application No. 59-158394 has been used. This cartridge has a pair of left and right frames 1, 2 as shown in FIG.
And the frames 1 and 2 are connected by a connecting means. A delivery roll 3 and a take-up roll 4 are respectively held between the left and right frames 1 and 2, and the printing ribbon 5 is delivered from the delivery roll 3 and the take-up roll 4 It was supposed to be wound up by.

[Problems to be solved by the invention]

The printing ribbon cartridge used in the conventional thermal printer as shown in FIG. 8 is of a magazine type, and is not disposable but is repeatedly used. For this reason, the back tension brake mechanism is built in the frames 1 and 2, and the frame 1 and 2 are constructed to have a sturdy structure, and the size is considerably large. When mounting a printing ribbon, take out this magazine from the printer body and set the delivery roller shaft 3 around which a new ribbon is wound on the supply side.
Moreover, the tip of this ribbon had to be attached to the roller shaft 4 on the winding side. Therefore, such a cartridge has a drawback that replacement of the ribbon is troublesome.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a ribbon cartridge that is compact and that allows the printing ribbon to be easily replaced.

[Means for solving problems]

The present invention relates to a print ribbon cartridge including a supply-side roller around which a print ribbon is wound and a take-up-side roller, and the supply-side roller is housed in a state in which the supply-side roller is rotatably supported. In a mounting state in which the case and the printing ribbon cartridge are mounted on a printer device that performs printing using the printing ribbon cartridge, the case is separated from the case and is separated from the supply side roller by a first distance. A rotation shaft of the winding side roller that is supported by the winding means of the printer device at a distance from the supply side roller in a detached state provided in the case and the printing ribbon cartridge is detached from the printer device. The winding side roller is rotated at a position separated by a second distance which is narrower than the first distance. It relates the print ribbon cartridge, characterized by comprising: a take-up roller holding portion formed notches for releasably holding the shaft, respectively.

[Action]

Therefore, according to the present invention, when the cartridge is detached from the printer, the take-up side roller is provided by the notch portion provided in the case for accommodating the supply side roller so as to be rotatably supported. Of the rotary shaft is detachably held, and at this time, the distance between the take-up side roller and the supply side roller is separated by a second distance which is narrower than the first distance between them when in use. . On the other hand, when the print ribbon cartridge is mounted in the printer device, the take-up side roller is removed from the case accommodating the supply side roller, and is separated from the supply side roller by the first distance. The rotation shaft of the winding side roller is supported by the winding means of the apparatus.

〔Example〕

The present invention will be described below with reference to an embodiment shown in the drawings. Fig. 1 ~
FIG. 4 shows a print ribbon cartridge according to an embodiment of the present invention. This cartridge 10 includes a supply side roller 11 and a winding side roller 12, and the supply side roller 11 is preliminarily provided. Printed ribbon wrapped around
The roller 13 is sent from the roller 11 and is wound by the roller 12 on the winding side. The cartridge 10 is provided with a synthetic resin casing 14 for housing the supply side roller 11. The casing 14 has a substantially semicircular cross-sectional shape, and auxiliary casings 15 also made of synthetic resin are provided on both sides of the casing 14.
Are being combined. This auxiliary casing
The front and rear sides of the casing 15 are connected to each other, and circular openings 16 are formed on both sides of the casing 14.

As shown in FIGS. 1 and 3, a cutout 17 having a substantially semicircular shape is formed on the upper end side of the auxiliary casing 15, and the cutout 17 forms the roller shaft 38 of the roller 12 on the winding side. Are to be retained. The roller shaft 37,
Gears 18 and 19 are fixed to 38, respectively. The gears 18 and 19 mesh with each other, and the gear 18 on the supply side roller 11 side is exposed to the outside by a gear window 20 formed in the casing 14.

The roller shaft 37 of the supply side roller 11 and the opening 16 of the casing 14
A brake housing 22 is mounted between the and. As shown in FIG. 5, the brake housing 22 is formed of synthetic resin into a substantially circular shape, and a flange 23 is formed at one end thereof. Further, on the outer peripheral surface of the housing 22, a pair of left and right protrusions 24 are formed,
It is adapted to be engaged with the notch 25 of the casing 14 or the auxiliary casing 15. Also brake housing 22
Is provided with a pair of elastic pieces 26 inside, and holds the roller shaft 37 on the supply side in the space inside these elastic pieces 26. A spring 27 (see FIG. 6) made of stainless steel is attached to the outside of the elastic piece 26 so that the elastic piece 26 is pressed against the roller shaft 37 on the supply side.

In the above configuration, the supply side roller 11 around which the printing ribbon 13 is wound is covered by the casing 14, while the winding side roller 12 is clicked by the notch 17 of the auxiliary casing 15. Installed on. The printing ribbon 13 is already attached to the outer peripheral surface of the roller 12 on the winding side before being mounted. Therefore, the ribbon cartridge for printing 10 in a state before being mounted can be made compact, and the tip end portion of the ribbon 13 can be wound on the roller 12 on the winding side.
It is possible to omit the operation of sticking to.

The gear 18 attached to the shaft 37 of the roller 11 on the supply side is exposed to the outside through the window 20 of the casing 14, and therefore, when the cartridge 10 is set in the printer, the looseness of the printing ribbon 13 is prevented. You will be able to absorb it manually. Further, the gear 19 of the roller 12 on the winding side is for winding the ribbon 13 by rotationally driving it by a motor (not shown) when the cartridge 10 is mounted on the printer. Further, as shown in FIGS. 1 to 4, in the state before mounting, since the gear 19 of the roller 12 on the winding side meshes with the gear 18 of the roller 11 on the supply side, The printing ribbon 13 is prevented from unintentionally loosening before mounting.

Further, in the print ribbon cartridge 10, the opening 16 formed on the side surface of the casing 14 as described above.
The brake housing 22 is mounted on the brake housing 22, and the roller shaft 37 on the supply side is inserted between the pair of elastic pieces 26 of the brake housing 22. The spring 27 made of stainless steel mounted on the outer side of the elastic piece 26 gives a force for pressing the elastic piece 26 to the roller shaft 37, thereby braking the supply side roller 11. The brake having such a structure has a small number of parts and has a simple structure, which is advantageous in terms of cost, which makes it possible to make the cartridge 10 disposable.

Next, the operation of mounting such a printing ribbon cartridge 10 in the printer will be described. In the printer, as shown in FIG. Roller receiver 30
And are provided respectively. When installing the cartridge 10 in such a printer, the cartridge 10
The casing 14 is held by hand, and in this state, the winding side roller 12 is pushed into the winding side roller receiver 30. Then, the roller shafts 38 protruding from both sides of the auxiliary casing 15 are elastically held by the roller receiver 30 on the winding side.
After confirming that the shaft 38 has been set, pulling the casing 14 upward causes the roller 12 on the winding side to
It is removed from the notch 17 of 15 and left on the roller receiver 30, so that the roller 12 on the winding side is mounted.

When the casing 14 is pulled in this state, the roller 11 on the supply side is stretched so that the printing ribbon 13 is stretched.
Is derived from. In this state, the roller 11 on the supply side is pushed into the roller receiver 29 on the supply side in the state of being housed in the casing 14. At this time, the roller housing 29 holds the brake housing 22 protruding on both sides of the casing 14. As a result, as shown in FIG. 7, the supply side roller 11 is also mounted at the predetermined position. After this, if necessary, through the window 20 the gear 18
Can be rotated to remove the slack of the printing ribbon 13.

When the printing ribbon cartridge 10 is mounted in this manner, the moving arm 31
To lower. Since the platen 32 and the guide roll 33 are held by the arm 31, the platen 32 and the guide roll 33 respectively push the printing ribbon 13 downward. Therefore, the printing ribbon 13 moves from the position shown by the chain line in FIG. 7 to the position shown by the solid line, and comes into contact with the guide rollers 34, 35 on the fixed side. At the same time, the printing ribbon 13 is pressed by the platen 32 against the thermal head 36 arranged on the lower side. In this way, the printing ribbon cartridge 10 is mounted so that printing can be performed.

〔The invention's effect〕

As described above, according to the present invention, a case for accommodating a supply-side roller in a state where the supply-side roller is rotatably supported, and a printing ribbon cartridge for a printer device that performs printing using the printing ribbon cartridge. In the mounted state, the rotation shaft of the winding side roller, which is separated from the case and is supported by the winding means of the printer device at a first distance from the supply side roller, is provided in the case. In the detached state in which the printing ribbon cartridge is detached from the apparatus, a notch portion that detachably holds the rotation shaft of the winding-side roller is formed at a position separated from the supply-side roller by a second distance that is narrower than the first distance. And a take-up side roller holding part.

Therefore, according to the present invention, when the printing ribbon cartridge is mounted on the printer device, the winding device of the printer device is arranged so that the winding roller is separated from the supply roller by the predetermined first distance. A take-up roller may be attached. In the state before being mounted on the printer, the take-up side roller is detachably held by the notch provided in the case, and at this time, the take-up side roller is narrower than the first distance from the supply side roller. The take-up side roller is held in the cutout portion of the case while being separated by a distance of 2, so that the print ribbon cartridge can be made compact. In addition, after removing the take-up roller from the notch of the case and installing it at a predetermined installation position, the take-up roller can be installed in the case as it is. Operability is improved.

[Brief description of drawings]

1 is an external perspective view showing a printing ribbon cartridge according to an embodiment of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a side view thereof, and FIG. 4 is a line IV-IV in FIG. Cross section,
FIG. 5 is a front view of a brake mechanism provided in this cartridge, FIG. 6 is an external perspective view of a spring of the brake mechanism, and FIG. 7 is a front view of a main part of a printer in which this print ribbon cartridge is mounted. FIG. 8 is an external perspective view showing a conventional printing ribbon cartridge. In the reference numerals used in the drawings, 10 ... printing ribbon cartridge 11 ... supply side roller 12 ... winding side roller 13 ... printing ribbon 14 ... casing 15 ... auxiliary casing 17 ... notch 37 …… Roller shaft (supply side) 38 …… Roller shaft (winding side).

Claims (1)

[Claims] 1. A printing ribbon cartridge comprising a supply-side roller around which a print ribbon is wound and a winding-side roller, wherein the supply-side roller is housed in a state in which the supply-side roller is rotatably supported. And a case in which the printing ribbon cartridge is mounted on a printer device that performs printing using the printing ribbon cartridge, the printing roller cartridge is separated from the case and is at a first distance from the supply-side roller. The rotation shaft of the winding-side roller supported by the winding means of the printer device and the supply-side roller in the detached state provided in the case and detached from the printer ribbon cartridge by the printer device. To a position separated by a second distance smaller than the first distance from the winding-side roller. Print ribbon cartridge, characterized by comprising: a take-up roller holding portion formed notches for releasably holding the rotating shaft, respectively.