JP2507954Y2 - Shuttle type ink ribbon cassette for color printer - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shuttle type ink ribbon cassette for a color printer which performs color printing by using a plurality of ink ribbon cassettes having different colors.

[0002]

2. Description of the Related Art The inventor of the present invention is a new type of color printer for performing color printing by selecting a desired ribbon cassette from a ribbon cassette storage unit storing a plurality of ink ribbon cassettes of different colors and moving it to a print head carriage. Was developed.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a shuttle type ink ribbon cassette suitable for the above new type color printer.

[0004]

SUMMARY OF THE INVENTION In the present invention, the winding shaft is hollow to serve also as an engaging portion with a guide bar, and a ribbon cassette supporting structure and a transfer structure from a ribbon cassette accommodating portion to a print head carriage are provided. Along with the simplification, a guide groove for a proper number of ribbon color code detection switches is provided on the surface of the cassette case in parallel with the winding shaft, and a cam corresponding to the color code is provided in the guide groove to provide a ribbon color. The above problem is solved as a structure that does not cause a malfunction of the code detection switch.

[0005]

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

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a right side view of FIG. 2, FIG. 4 is a left side view of FIG. 2, and FIG. A sectional view, FIG. 6 is a sectional view taken along the line BB of FIG. 2, FIG. 7 is a sectional view taken along the line CC of FIG. 2, FIG. 8 is an explanatory view showing a usage state, and FIG. 2) is an enlarged perspective view showing the relationship between the ribbon detection switch for detecting the) and the guide groove.

In the figure, reference numeral 1 is a cassette case consisting of an upper case 1a and a lower case 1b.
a and 2b, and a ribbon exposure window 3 therebetween, and racks 4a and 4b and four color code detection switch guide grooves 5 on the upper surface of the upper case 1a.
It is provided parallel to the take-up shaft 12 mounted on b.

Two mounting holes 7 for mounting the cam pieces 6 are provided at predetermined positions of the guide groove 5, respectively.

As shown in FIGS. 3 and 3, the upper case 1a and the lower case 1b are coupled to each other by the locking projections 8 and the hooks 9 and 9 provided on the upper case 1a, and the lower case 1 which is engaged therewith.
This is done by the holes 10 and 11, 11 provided in b.

As shown in FIG. 6, the take-up shafts 12 and 12 are composed of a hollow shaft 12a and flanged bearings 12b and 12c, and are rotatably attached to the cassette case 1, respectively.

As shown in FIG. 8, the cassette case 1 according to the present invention is usually provided in a cassette case housing portion 2
Hollow shaft 12a on a cantilevered guide bar (not shown)
The selected cassette case 1 which is housed in the state of being engaged with the hollow shaft 12 is ejected in the direction of the head carriage 15 by the hard rubber gear 14 driven by the motors M1 and M2.
a is engaged with a cantilever-shaped guide bar 16 provided in the head carriage 15.

When the cassette case in the head carriage 15 is moved to the cassette case housing portion 13, the hard rubber gears 17, which engage the racks 4a, 4b by driving the motors M3, M4 provided in the head carriage 15, Send back by 17.

FIG. 9 is an enlarged perspective view showing the structure of the ribbon color code detection switch guide groove 5 and the ribbon color code detection switch, and a lever switch 18 is used as the ribbon color code detection switch. The operating lever 18a of the lever switch engages with the guide groove for the color code detecting switch, and is switched on when the operating lever 18a rides on the cam piece 6 provided according to the color code.

[0014]

The present invention is a system in which the take-up shaft 12 is a hollow shaft, and the take-up shaft is used to hold the cassette case housing 13 and the head carriage 15 by two guide bars. There is an effect that the structure for holding and guiding the cassette case 1 is greatly simplified, and furthermore, the attitude control and movement during the shuttle operation are performed quickly.

Further, the ribbon color code detection switch guide groove 5 is provided in parallel with the winding shaft 12, and the operating lever 18a of the ribbon color code detection switch 18 is engaged and moved in the guide groove. Therefore, unlike the structure in which the projection for operating the operating lever 18 is provided on the surface of the cassette case, the operating lever 18 does not come off the projection and malfunction occurs.

In the illustrated embodiment, a cam piece 6 is attached according to the color of the ribbon accommodated in a predetermined position of the guide groove 5, and a 4-bit code is generated by turning on / off the color code detection switch 18 of the ribbon. This is to detect the color of the stored ribbon.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a plan view of an embodiment of the present invention.

FIG. 3 is a right side view of FIG.

FIG. 4 is a left side view of FIG. 2;

5 is a cross-sectional view taken along the line AA of FIG.

FIG. 6 is a sectional view taken along line BB of FIG.

FIG. 7 is a sectional view taken along line CC of FIG.

FIG. 8 is an explanatory diagram showing a usage mode.

FIG. 9 is an enlarged perspective view showing the relationship between the ribbon detection switch and the guide groove.

[Explanation of symbols]

 1 cassette case 2a, 2b winding shaft housing 3 ribbon exposure window 4a, 4b rack 5 color code detection switch guide groove 6 cam piece 7 mounting hole 8 locking protrusion 9 hook 10, 11 hole 12 winding shaft 13 cassette Case housing 14, 17 Gears 15 Head carriage 16 Guide bar 18 Ribbon color code detection switch

Claims (2)

(57) [Scope of utility model registration request] 1. A cassette case is of a vertically split type, and a hollow winding shaft into which a guide bar can be inserted is detachably provided, and an appropriate number of ribbons are provided parallel to the winding shaft on the surface of the cassette case. A shuttle type ink ribbon cassette for a color printer, characterized in that a guide groove for the color code detection switch is provided and a cam is provided in the guide groove in accordance with the color code. 2. A gas the cassette case on both sides of the cassette case to the insertion direction of the cassette case of the guide bar
The shuttle type ink ribbon cassette for a color printer according to claim 1, further comprising a rack that engages with a feed roller to be inserted into the id bar .