JPS5931957B2 - printing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a serial type mechanical printing device used in electronic computers and the like.

Generally, this type of device prints on paper via an ink ribbon by the impact of the print head, but by laying this ink ribbon across all columns of the print line and winding it alternately at both ends. In printing devices that feed an ink ribbon, for the visibility of printed characters,
The installation of the ink ribbon is complicated by the ink ribbon guide member provided near the print head.

FIG. 1 shows an example of a conventional printing device of this type, in which a sheet of paper 3 is located between a platen 1 and a print head 2, and the print head 2 is fixed to a carriage 9, which is connected to the platen. 1, the print head 2 prints on the paper 3 via the ink ribbon 4. On the other hand, the ink ribbon 4 is guided as shown in the figure by an ink ribbon guide section 20 consisting of ink ribbon guide shafts 5, 6, T, and 8 fixed to a carriage 9, and is wound onto the platen 1 by winding it up alternately at both ends. It will be sent parallel to the Here, the ink ribbon guide shafts 5 and 8 are out of phase with the ink ribbon guide shafts 6 and 1 as shown in the figure for visibility of printed characters.

For this reason, the path of the ink ribbon 4 is complicated, and when installing the ink ribbon 4, the operator must directly grasp the ink ribbon 4 and move the ink ribbon guide shafts 5, 6, 7, 8.
I needed to hang it on.

Furthermore, this has the disadvantage that the operator's hands are dirty or that he or she must wear gloves. In order to solve the above-mentioned drawbacks, the present invention improves the path of the ink ribbon when installing the ink ribbon, and provides a printing device that allows the ink ribbon to be installed extremely simply by making the path straight. be.

Hereinafter, the present invention will be explained in detail based on the drawings.

FIG. 2 shows an embodiment of the present invention, and is a perspective view showing a printing state, and FIG. 3 is a perspective view of an embodiment of the invention, showing an ink ribbon installed state.

In FIG. 2, the print head 2 and a first ink ribbon guide section 21 consisting of ink ribbon guide shafts 6 and 7 are fixed to a base 10, and the base 10 is movable in a direction perpendicular to the platen 1. is attached to the carriage 9. Further, the carriage 9 includes a lever 11 for moving the base 10, a second ink ribbon guide section 22 consisting of the ink ribbon guide shafts 5 and 8, and a compression spring 12 for constantly pushing the print head 2 toward the platen 1. It's attached. By rotating the lever 11, the ink ribbon guide shafts 6 and 7 fixed to the base 10 and the positioning head 2 are moved, and the compression spring 12 is compressed, resulting in the state shown in FIG. 3. It turns out.

As is clear from FIG. 3, by rotating the lever 11, the relative relationship between the ink ribbon guide shafts 6, 7 and printing head 2 and the ink ribbon guide shafts 5, 8 changes, and the path of the ink ribbon 4 changes. It becomes a straight line. This eliminates the need for the operator to immediately grab the ink ribbon 4 and hang it on the ink ribbon guide shafts 5, 6, 7, and 8 when installing the ink ribbon 4 in the past, and the ink ribbon 4 is held in a straight line on the ink ribbon guide shaft. 5, 8 and 6, 7, and by rotating the lever 11 again, as shown in Fig. 2, the ink ribbon 4 can be simply installed without impairing its visibility, and is easy to operate. This also eliminates the disadvantages of getting people's hands dirty and using gloves. As described above, the present invention provides the ink ribbon guide section separately into the first and second ink ribbon guide sections, and when the ink ribbon is installed, moves the ink ribbon guide section to the first ink ribbon guide section and printing, Since the ink ribbon path near the print head is in a straight line,
It is possible to provide a printing device that can simply operate an ink ribbon device.

Although the above description has been made regarding a printing device used in an electronic computer, it goes without saying that various modifications may be made without departing from the gist of the present invention.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a conventional printing device, FIG. 2 is a perspective view of a printing device according to an embodiment of the present invention, showing the printing state, and FIG. 3 is a perspective view also showing an embodiment of the present invention. FIG. 3 is a diagram showing an ink ribbon installed state.

Claims (1)

[Claims] 1. In a printing device, an ink ribbon guide section provided near a print head is separated into a first ink ribbon guide section movable together with the print head and a second ink ribbon guide section fixed to a carriage. A printing apparatus having a structure in which the first ink ribbon guide section is moved together with the print head when the ink ribbon is attached, so that the path of the ink ribbon is made straight.