JPS6221576A - Ribbon guide for color printer - Google Patents

Abstract

PURPOSE:To prevent a ribbonless impact from occurring due to an unintentional movement of a ribbon, by providing a ribbon guide having two guide parts respectively for a color ink ribbon and a black ink ribbon. CONSTITUTION:The single ribbon guide 10 is provided with color ribbon guide parts 11, 11' conforming to the width of a color ink ribbon and black ribbon guide parts 12, 12' conforming to the width of a black ink ribbon, the guide parts 11, 11' being disposed on the outside of the guide parts 12, 12'. The ribbon guide 10 can be vertically moved through engagement of holes provided at centers of the guide parts 12, 12' with guide pins 14, 14' erected on a metallic member 13 fitted to a carrier, and can be stopped at any of a plurality of positions by engaging a fastening spring 16 into one of a plurality of recesses provided in fastening parts 15, 15'. Accordingly, because the color ribbon guide parts and the black ribbon guide parts are provided separately from each other, a ribbonless impact will not occur even when the black ribbon is used.

Description

[Detailed Description of the Invention] [Summary] A ribbon guide for a color printer, which has two guide parts, a guide part for a color ink ribbon and a guide part for a black ink ribbon. To prevent blank hitting caused by misalignment.

[Industrial application field]

The present invention relates to a ribbon guide for a color printer.

FIG. 4 is a diagram for explaining a conventional color printer. As shown in figure a, an ink ribbon 1 divided into several colors is stored in a cassette, and as shown in figure b, this ribbon cassette 2 is mounted on a ribbon frame 3, and the ink ribbon 1 is guided by a ribbon guide 4 to a print head. The print head 5 on the carrier 8, which is inserted between the carrier 8 and the platen 6 and moves back and forth left and right on the guide rods 7, 7'', prints the platen 6.
Printing begins on the upper paper 9. Then, to select the printing color, use the ribbon frame 3 as its fulcrum 3a.
The ribbon guide 4 is rotated with the ribbon 1 at the center, and a desired portion of the ribbon 1 is set at the printing position of the print head 5.

[Problems to be solved by the prior art and the invention] The above-mentioned color printer has 1"'p' like a normal printer.
) If you use ink ribbons with different ribbon widths, such as ``S17'' 9FL or ``Kareita/80 Tame'' color ribbon or ribbon exclusively for black, ribbon misalignment may occur, causing blank printing, or the ribbon width may change. Since the load applied to each ribbon differs, there is a problem of wear and tear when the ribbon becomes sagging and causes step-out. The purpose is to provide a ribbon guide that does not cause blank firing or tax adjustment.

[Means for solving problems]

Therefore, in the present invention, a color ink ribbon and a black-only ink ribbon having a ribbon width different from the color ink ribbon are used, and the ink ribbon is guided between the print head and the platen. A color printer having a ribbon guide is characterized in that the ribbon guide 10 is provided with two ribbon guide parts: a color ribbon guide part 11, 11° and a black ribbon guide part 12, 12'.

[For production]

By providing two ribbon guide parts for the color ribbon and the black ribbon in the ribbon guide of a color printer, by using a black ribbon that is narrower than the color ribbon, it is possible to prevent blank printing due to ribbon misalignment.

[Embodiment] "FIGS. 1 and 2 are diagrams showing an embodiment of the present invention. FIG. 1 is a perspective view, and FIG. 2 is a sectional view taken along line nn in FIG. 1.

In this embodiment, as shown in FIGS. 1 and 2, each ribbon width is adjusted to one ribbon guide 10.
5-') Bo, use, part 11, li, and black 1. Waste tank corner guide portions 12 and 12' are provided. The color ribbon guide parts 11 and 11' are arranged outside the black ribbon guide parts 12 and 12'.

In FIG. 1, the ribbon cassette 10 is constructed by inserting holes drilled in the center of each of the black ribbon guide parts 12 and 12' into the guide pins 14 implanted in the metal fittings 13 attached to the carrier at an angle of 14 degrees. The locking spring 16 locks into a plurality of recesses formed in the locking portion 15 at an angle of 15°, so that the locking portion 15 can be stopped at multiple locations.

In this embodiment configured in this manner, the guide portions for the color ribbon and the black ribbon are separate, so there is no fear of blank firing even when using the black ribbon.

Also, as shown in Figure 2, a color ribbon 17 and a black ribbon 1
8 means each guide part ILII', 12°12
”, the angle at which the ribbon passes is shallower for the color ribbon 17 than for the black ribbon 18. Therefore, the running resistance of the color ribbon 17, which has a large ribbon width, and the black ribbon 18, which has a narrow ribbon width, is approximately equal. can do.

Further, as explained in FIG. 1, the ribbon guide 10 is movable up and down on the guide pins 14 and 14', and when using a color ribbon, a predetermined color can be selected and guided to the printing position of the print head. . Ribbon guide 1 in this case
An example of a 0-1 lower drive mechanism is shown in FIG. In the figure, 20 is a carrier, on which a printing board 22 and a ribbon guide 10 are mounted on a printing plate facing a platen 21, and can be moved left and right on guide boards 23, 23''. It is a frame on which a cassette 25 is mounted, and is rotated about an axis by a cam 27 attached to a motor 26.

29 is a shift lever, one end of which is connected to the carrier 2 by a shaft 30.
The other end is engaged with the left and right pins IOa of the ribbon guide river 0, and a roller 31 provided in the middle is supported by a rail 32 provided in the longitudinal direction of the tip of the ribbon frame 24. is engaged in. When selecting a desired color portion of the color ribbon, the ribbon frame 24 is rotated by the cam 27.
Guide pin 14'' second ribbon guide 1
0 is driven up and down via a shift lever 29.

[Effects of the Invention] As described above, according to the present invention, by providing two guide portions for color ribbon and black ribbon in one ribbon guide, it is possible to prevent blank firing when black ribbon is used. , which is extremely useful in practice.

[Brief explanation of drawings]

1 and 2 are diagrams showing an embodiment of the present invention, in which FIG. 1 is a perspective view, FIG. 2 is a sectional view taken along the line nn of FIG. 1, and FIG. 3 is a ribbon guide shift mechanism. FIG. 4 is a diagram for explaining a conventional color printer. In Figures 1 and 2, 10 is a ribbon guide, □ 11, 11° is a color ribbon guide part, 12.12
13 is a guide part for the black ribbon, 13 is a metal fitting, 14 and 14' are guide pins, 15 and 15' are locking parts, 16 is a locking spring, 17 is a color ribbon, and 18 is a black ribbon. Figure 1: Exploded perspective view showing an embodiment of the present invention Figure 2: Cross-sectional view taken along the line ■-■ in Figure 1. □ 11.11'...Color ribbon guide section +2j2'
... Black ribbon guide part 17 ... Color ribbon 18 ... Black ribbon 19 ... Printing hem 4 2 I

Claims (1)

[Claims] 1. Using a color ink ribbon and a black-specific ink ribbon whose ribbon width is different from the color ink ribbon, and guiding the ink ribbon between the print head and the platen. In a color printer having a ribbon guide, the ribbon guide (10) is provided with two ribbon guide parts: a color ribbon guide part (11, 11') and a black ribbon guide part (12, 12'). A ribbon guide for color printers that is characterized by: 2. Ribbon guide part (11) of the ribbon guide (10)
, 11', 12, 12') have one pair of guides for both the color ribbon and the black ribbon, and the distance between each pair of guides is set larger for the color ribbon with a larger ribbon width than for the black ribbon. A ribbon guide for a color printer according to claim 1, characterized in that: 3. The ribbon guide (10) moves the carrier (20) in synchronization with the shift to select the desired color of the color ribbon.
) is slidable along guide pins (14, 14') provided in the first claim.
Ribbon guide for color printers listed in section.