JPH0553956U - Ink ribbon cassette - Google Patents

Abstract

(57) [Summary] [Purpose] When the ink ribbon is repeatedly used, the ink ribbon can be used without being rewound, and the structure and time for rewinding are not required. [Structure] The feeding side and the winding side of an ink ribbon cassette are symmetrical, and the ribbon storage portion and the driving force transmission portion can be separated.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a cartridge type ink ribbon cassette of a thermal transfer printer using an ink ribbon.

[0002]

[Prior Art]

 A conventional technique will be described with reference to FIG. FIG. 3 shows a drive mechanism of the ink ribbon 5 when the integrated ink ribbon cassette 1 having the ink ribbon 5 attached thereto is attached to the printer. The feeding side 14 has a one-way clutch 4 for giving a constant tension to the ribbon 5 and a rewinding motor 3. The winding side 15 has a ribbon winding motor 2 and a one-way clutch 4 for winding. The power of the motor is transmitted via the power transmission gear 6.

[0003]

[Problems to be solved by the device]

 As described above, in the conventional ink ribbon cassette, the feeding side 14 and the winding side 15 each have a dedicated function. Further, the shape of the ink ribbon cassette itself had a spectacle-shaped or bridge-shaped cross-sectional shape as shown in FIG. For these reasons, when the same ink ribbon 5 is repeatedly used, it is necessary to rewind the ink ribbon 5, and the ribbon rewinding motor 3 is required as shown in FIG. It also needed time to rewind. An object of the present invention is to provide an ink ribbon cassette that eliminates the above-mentioned obstacles.

[0004]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention separates the ribbon storage portion and the ribbon driving force transmission portion of the ink ribbon cassette, and the ribbon storage portion has the same shape on the take-up side and the feed side and is symmetrical. When attaching the force transmission part to the ribbon storage part, the structure should be such that the winding side and the feeding side can be reversed.

[0005]

[Action]

 By the above means, when the ink ribbon is repeatedly used, the next use can be started immediately after the ribbon end is used. Further, since the rewinding is not necessary, the structure of the ink ribbon drive section can be simplified.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of an example in which the present invention is implemented. The ink ribbon storage portion 1b and the ink ribbon drive portion 1a are connected to each other and stored in the printer, the ink ribbon winding motor 15 is connected to the ink ribbon winding side 15 and the reverse rotation preventing ratchet 7 is connected to the ink ribbon feeding side 14. It shows a state in which the clutch 4 for applying tension to the ribbon 5 is connected. In this state, the ink ribbon 5 is driven in the direction of arrow A. Alternatively, the ink ribbon storage unit 1b and the ink ribbon drive unit may be temporarily separated, the ribbon storage unit may be rotated 180 degrees in the direction of arrow B, and the winding side 15 and the feeding side 14 may be interchanged and mounted.

FIG. 2 is a partial cross-sectional view of a connecting portion between the ribbon driving force transmission portion 1a and the ribbon storage portion 1b. A bobbin end 9 is attached to the tip of a bobbin 8 around which the ink ribbon 5 is wound, and the opposite side of the bobbin 8 has the same structure. The ribbon drive force transmission portion 1a and the ribbon storage portion 1b are connected by a fixing claw 10, and at that time, the bobbin end 9 and the projection 20 of the ribbon drive shaft 12 are engaged with each other to ensure the transmission of power. .. The ribbon drive shaft 12 is supported by a pressing spring 11 so that the integrated ribbon cassette 1 can be smoothly connected to the ribbon drive unit.

[0008]

[Effect of the device]

 By the above means, when the ink ribbon is repeatedly used, the next use can be easily started after the ribbon end is used up. In addition, the structure of the ink ribbon drive unit can be simplified. In addition, it is possible to prevent mistakes in the direction of use, even if the product is used halfway, regardless of the symmetrical shape.

[Brief description of drawings]

FIG. 1 is a perspective view showing how the present invention is implemented.

FIG. 2 is a partial cross-sectional view of a connection portion between a ribbon driving force transmission portion and a ribbon storage portion.

FIG. 3 is a perspective view showing a conventional ink ribbon cassette.

[Explanation of symbols]

 1 ribbon cassette, 1a ribbon drive force transmission part, 5 ribbons, 8 bobbins, 9 bobbin ends, 12 ribbon drive shafts, 20 holes

Claims (1)

[Scope of utility model registration request] 1. A ribbon in which a pair of bobbins having bobbin ends at both ends and on which an ink ribbon is wound are accommodated in parallel at a fixed distance, and the bobbin ends are exposed to the outside so that both end surfaces have the same shape. A ribbon; and a ribbon drive force transmission portion that transmits a rotational force from the outside to the protrusion via a ribbon drive shaft. The pair of protrusions of the drive transmission portion are engaged with the pair of bobbin ends on one surface of the ribbon cassette, and the protrusions rotate by receiving a rotational force from the outside, whereby the ink ribbon moves. The protrusion is engaged with the bobbin end on the other surface on the opposite side of the bobbin end on the one surface engaged with the projection of the ribbon cassette, and is rotated by an external force. An ink ribbon cassette device characterized in that the ink ribbon rotates in the reverse direction.