JPH03126573A - Ink ribbon cartridge - Google Patents

Abstract

PURPOSE:To drive an ink ribbon without vertical vibration of an ink ribbon cartridge to prevent a color mixture printing caused by vibration by mounting a coupling provided with a pin and a feed core provided with a groove for guiding the pin and allowing the pin to be moved freely and vertically. CONSTITUTION:An ink ribbon cartridge 1 is loaded on a ribbon base 12 and held rotatably about a rotating shaft 11. When a cam 9 is rotated, the cam 9 presses up a cam follower 18 to rotate the cartridge 1. A gear 13 is rotated, and a coupling 6 and a feed core 3 are rotated in this order, whereby the rotation is transmitted to the feed core 3. To transmit the rotation without being affected by the rotation of a torque piece 7 and the inclination of the ink ribbon cartridge 1, the coupling 6 is constructed so that a pin 5 of the coupling 6 can be freely and vertically move along a groove 19 provided in the feed core 3 as a guide.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an ink ribbon cartridge for a printer,
In particular, a printer that accommodates an ink ribbon that is divided into multiple layers in the vertical direction and coated with different colors of ink on each layer, and that prints in multiple colors by switching the position of the ink ribbon cartridge in multiple stages when installed in the printer. This invention relates to an ink ribbon cartridge for use in.

[Conventional technology]

The conventional technique will be explained with reference to FIG.

Used in printers that are equipped with an ink ribbon cartridge containing an ink ribbon that is divided into multiple layers vertically and each layer coated with a different color, and that prints in multiple colors by switching the position of the ink ribbon cartridge in multiple stages. As shown in FIG. 5, a conventional ink ribbon cartridge has a feed core 16 and a follower core (not shown) that are pressed together to sandwich the ink ribbon therebetween. Feed the ribbon. The rotation of the feed core 16 is driven by a motor (not shown) and is transmitted through the torque piece 14 and the coupling 15.

[Problem to be solved by the invention]

The conventional ink ribbon cartridge as described above has a structure in which when the ink ribbon cartridge 17 is tilted to a predetermined position by the switching operation of the printer, the coupling 15 in the feed core 16 is also tilted to an angle approximately equal to that of the ink ribbon cartridge 17. Therefore,
Due to the rotation of the torque piece 14, the ink ribbon cartridge 17 is subjected to vertical force, and in the worst case, the ink ribbon shifts from a predetermined position, resulting in mixed color printing.

[Means to solve the problem]

The ink ribbon cartridge of the present invention is an ink ribbon cartridge used in a printer having a mechanism for printing in a plurality of colors by switching in multiple steps in the vertical direction. The foot core has a groove that allows the ring to move freely in the vertical direction.

〔Example〕

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

1(a) and 1(b) are front and side views showing the main parts of an embodiment of the present invention, FIG. 2 is a front view and side view showing the embodiment of FIG. 1 installed in a printer, and FIG. 3 is a partially cutaway front view showing the details of FIG. 2, and FIG. 4 is a perspective view showing the external appearance of the embodiment shown in FIG.

As shown in FIGS. 1 to 4, the ink ribbon cartridge 1 of this embodiment is mounted on a ribbon base 12 of a printer, and is rotatable around a rotating shaft 11 provided on the bottom surface of the ink ribbon cartridge 1. is maintained. motor 8
When the cam 9 rotates due to the rotation, the cam follower 18 provided on the bottom surface of the ink ribbon cartridge 1 is pushed up and the ink ribbon cartridge 1 is rotated in the direction of arrow A. At this time, the pressing force of the cam follower 18 of the ink ribbon cartridge 1 against the cam 9 is applied by a spring holder 10 having a spring inside.

Since the ink ribbon 2 is held between a feed core 3 and a follower core 4 that are in pressure contact with each other, the feeding operation of the ink ribbon is driven by rotating the feed core 3. The rotation of the feed core 3 is 1. The power is transmitted by rotating the gear 13 incorporating the torque piece 7 by the motor 8, and rotating the coupling 6 and the feed core 3 in this order via the gear 13 and the torque piece 7. In order to be able to transmit the driving force without being affected by the rotation of the torque piece 7 and the inclination of the ink ribbon cartridge 1, the coupling 6 is guided by a groove 19 provided in the feed core 3. The bin 5 is designed to be able to move freely in the vertical direction.

〔Effect of the invention〕

As explained above, the ink ribbon cartridge of the present invention allows the pin 5 provided in the coupling 6 to move freely in the vertical direction using the groove 19 provided in the feed core 3 as a guide. Even when the ink ribbon cartridge 1 is tilted, the rotation of the torque piece 7 has the effect that the ink ribbon can be driven without causing the ink ribbon cartridge 1 to vibrate up and down. This has the effect of preventing mixed color printing.

[Brief explanation of the drawing]

1(a) and 1(b) are front and side views showing the main parts of an embodiment of the present invention, FIG. 2 is a front view and side view showing the embodiment of FIG. 1 installed in a printer, and FIG. 3 is a partially cutaway front view showing the details of FIG. 2, FIG. 4 is a perspective view showing the external appearance of the embodiment shown in FIG. 1, and FIGS. 5(a) and 5(b) are an example of a conventional ink ribbon cartridge. FIG. 1.17... Ink ribbon cartridge, 2... Ink ribbon, 3.16... Feed core, 4... Follower core, 5... Pin, 6.15... Coupling, 7.14 ...Torque piece, 8...Motor, 9
...Cam, 10...Spring holder, 11...
Rotating shaft, 12... Ribbon base, 13... Gear, 1
8...Cam follower, 19...Groove.

Claims (2)

[Claims] (1) An ink ribbon cartridge used in a printer that has a mechanism for printing in multiple colors by switching in multiple steps in the vertical direction, includes a coupling that has a pin, and guides the pin to move the coupling in the vertical direction. An ink ribbon cartridge for a printer, comprising: a feed core having a groove that allows free movement. (2) In an ink ribbon cartridge used in a printer that has a mechanism that prints in multiple colors by switching in multiple steps in the vertical direction, the rotation axis is the center of rotation when it is mounted on the printer's ribbon base. a cam follower driven by a cam of the printer that rotates with rotation of a motor of the printer; a spring holder housing a spring therein that applies a pressing force to the cam follower; and an ink ribbon, which are in pressure contact with each other. a feed core and a follower core that perform a feeding motion of the ink ribbon, and a coupling that rotates via a gear and a torque piece of the printer that are rotated by the motor, and the feed core is rotated via the coupling. . A printer ink ribbon cartridge, characterized in that the coupling is provided with a pin, and the pin can freely move vertically using a groove provided in the feed core as a guide.