JPH0645257B2 - Color Ribbon Cartridge - Google Patents

Description

The present invention relates to a color ribbon cartridge used in a printing apparatus.

[Prior Art] Conventionally, in this type of color ribbon cartridge, a ribbon guide portion for guiding a portion of the color ribbon exposed from the cartridge body is integrally formed with the cartridge body.

[Problems to be Solved] However, in such a conventional color ribbon cartridge, since the ribbon guide portion is integrally formed with the cartridge body, when the color of the ribbon is changed, the entire cartridge is swung or There was a problem that it had to be slid.

[Means for Solving Problems] The present invention has been made in view of the above problems, and in a color ribbon cartridge that uses color ribbons having different color inks in parallel with the length direction, the color ribbon is built-in. A cartridge body, a ribbon folding member rotatably arranged around a first shaft fixed near the ribbon inlet and outlet of the cartridge body, and folded back by the ribbon folding member near the ribbon inlet and outlet. Each of the color ribbons is wound around, and a guide arm that is parallel to the first axis and that rotates around a second axis that is fixed near the ribbon inlet and outlet of the cartridge main body is included.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an overall perspective view showing an embodiment of the present invention, FIG. 2 is an enlarged perspective view showing an essential part of FIG. 1, and FIGS. 3 and 4 show the operation of the present invention. It is explanatory drawing respectively shown.

First, the structure will be described. In FIG. 1, reference numeral 1 denotes a cartridge body, and projecting portions 1a, 1a projecting to one side surface side are formed on both sides in the longitudinal direction of the cartridge body 1, respectively. An opening through which the ink ribbon 2 comes in and out, and a support piece 1b are provided at the tip of each protrusion 1a. A folding member 3 having a slit on its upper surface is swingably attached to each support piece 1b by a pivot pin 4.

Further, a pivot stud 6 formed integrally with the guide arm 5 is inserted through the support piece 1b, and the left and right pivot studs 6, 6 are aligned with the left and right guide arms 5, 5 in phase. In this state, they are connected by the joint stay 7. Therefore, the left and right guide arms 5,
5 swings integrally about each pivot stud 6 in the same phase.

Further, two guide rollers 8, 8 are individually rotatably attached to both ends of each guiding arm 5 in the longitudinal direction, and a driving force of a ribbon color switching mechanism (not shown) is provided in the middle of the longitudinal direction. A holder cam 9 for swinging the guide arm 5 in response to this is attached.

The portion of the ink ribbon 2 exposed from the cartridge body 1 is folded back by the left and right folding members 3 and 3 and is guided to the guide rollers 8 and 8 provided at both ends of the left and right guiding arms 5 and 5, respectively. Then, it is mounted in the state shown in FIG. In the figure, 10 is an ink ribbon drive mechanism.

Next, the operation will be described.

When ribbon color switching is performed, the left and right guiding arms 5 and 5 are swung through the operation of the holder cam 9 by the driving force of a ribbon color switching mechanism (not shown), as shown in FIGS. 3 and 4. First, both guide arms 5 and 5 are tilted with respect to the cartridge body 1 by an angle θ required for color switching. Then, the posture of the ink ribbon 2 is changed as shown in the same figure, so that the color can be switched.

In this case, since the folding member 3 swings with respect to the cartridge main body 1 about the pivot pin 4, the ink ribbon 2 is not stressed even if the guide arm 5 is tilted, and smooth running is ensured. be able to.

[Effects of the Invention] As described above, according to the present invention, it is possible to rotate about a cartridge body containing a color ribbon and a first shaft fixed near the ribbon inlet and outlet of the cartridge body. The arranged ribbon folding member and the color ribbon folded by the ribbon folding member near the ribbon inlet and the outlet are respectively wound around the ribbon folding member,
Since it is configured to include a guide arm which is parallel to the axis of the cartridge main body and which is fixed around the ribbon inlet and the outlet of the cartridge main body around the second axis, the ribbon can be moved without swinging or sliding the entire cartridge. The effect that color switching can be easily performed is obtained. Moreover, since it is not necessary to swing or slide the entire cartridge, there is an effect that the color switching mechanism can be simplified as compared with the conventional color switching system.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an embodiment of the present invention, FIG. 2 is an enlarged perspective view of a first essential portion, and FIGS. 3 and 4 are explanatory views showing the operation of the present invention. Is. 1: Cartridge main body, 2: Ink ribbon 3: Folding member, 4: Pivot pin 5: Guide arm, 7: Joint stay 9: Holder cam

Claims (1)

[Claims] 1. A color ribbon cartridge that uses color ribbons having different color inks in parallel to a length direction, the cartridge body containing the color ribbon, and a ribbon body fixed to the ribbon inlet and outlet of the cartridge body. The ribbon folding member rotatably arranged around a first axis and the color ribbon folded by the ribbon folding member near the ribbon inlet and the outlet are respectively wound, and the cartridge is parallel to the first axis. A color ribbon cartridge comprising: a ribbon inlet of the main body; and a guide arm which is fixed near the outlet and rotates around a second shaft.