JPH0312526Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a thermal head for a thermal printer, and particularly to a thermal head that facilitates printing correction operations.

[Background of the idea]

FIG. 1 is a schematic perspective view of a thermal head conventionally provided in a thermal printer. In this figure, reference numeral 1 denotes an insulating substrate made of ceramic or the like, and 2a to 2g are heat generating resistors for printing in the form of thin films made of ruthenium oxide, tantalum nitride, etc., which are arranged separately from each other on the insulating substrate 1. These heating resistor parts 2a to 2g are individually connected to each of a plurality of conductor pattern parts (not shown). Note that the interval from the first heat generating resistor section 2a to the seventh heat generating resistor section 2g forms a printing area such as a printing width.

In a thermal printer equipped with such a thermal head, the thermal head is arranged to face recording paper wound around a platen, and a heat-fusible material is provided between the thermal head and the recording paper. A printing tape is placed, and by energizing the above-mentioned conductor pattern portion of the thermal head, the heating resistors 2a to 2g generate heat, which melts a predetermined portion of the printing tape and transfers it to a recording paper (not shown). That is, printing is performed.

By the way, in such thermal printers, there is a need for a means that can correct (correct) printed areas. In response to this request, the heating resistor section 2a for printing shown in FIG.
It is conceivable to use ~2g as is for collecting, but doing so requires difficult control to change the heat generation temperature of the heat generating resistors 2a to 2g during printing and the heat generating temperature of the heat generating resistors 2a to 2g during collection. As a result, the performance of both printing and print correction may deteriorate.

Moreover, if the heating resistor parts 2a to 2g are
Even if the collect operation is performed by generating heat, the heat-generating resistors 2a to 2g have a dot configuration that is arranged separately from each other, so that the heat-melting material of the collect tape cannot be used for printed characters, etc. It is difficult to melt the material properly so as to cover it, and from another point of view, it is difficult to obtain good print correction performance.

Note that, unlike the above, it is conceivable to install the thermal head for printing and the thermal head for collection side by side, but in this case, the heating resistor parts of the thermal head for printing and the thermal head for collecting, respectively. Although the control is simplified since there is no need to change the heat generation temperature of the thermal head, the number of parts increases and the manufacturing cost of the thermal printer equipped with the thermal head increases.

[Purpose of invention]

The present invention was devised in view of the actual state of the prior art, and its purpose is to provide a thermal head with a simple structure that allows printing corrections to be made easily and with high performance. be.

[Summary of the idea]

In order to achieve this objective, the present invention has a configuration in which a heat generating resistor for collecting is provided on an insulating substrate on which a heat generating resistor for printing is placed, and is arranged in parallel with the heat generating resistor for printing. be.

[Example of idea]

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

FIGS. 2a and 2b are explanatory views showing one embodiment of the thermal head of the present invention, where FIG. 2a is a schematic perspective view and FIG. 2b is a detailed view.

In these figures, 1 is an insulating substrate, 2a to 2
g is a heating resistor for printing, which is as described above. 3a to 3g are heat generating resistor parts 2a to 2g
The individual conductor pattern portions are made of, for example, silver and are formed in the form of a thin film. Reference numeral 4 denotes a heat generating resistor section for collecting, which is provided on the insulating substrate 1 in parallel with the heat generating resistor section 4 for printing. Reference numeral 5 denotes a conductor pattern portion connected to the heat generating resistor portion 4, which is made of silver, for example, and formed into a thin film shape. Reference numeral 6 denotes a thin film-like common conductor pattern portion made of silver or the like, which is connected to both the above-described heating resistor portions 2a to 2g for printing and the heating resistor portion 4 for collecting.

In the thermal head configured in this manner, by appropriately and selectively energizing the individual conductor pattern parts 3a to 3g, the corresponding heating resistor parts 2a to 2g for printing generate heat to perform desired printing. At the same time, when the conductor pattern section 5 is energized, the heat generating resistor section 4 for collection generates heat, and a desired print correction operation can be performed.

In addition, in the thermal head configured in this way, the heating operation of the heating resistors 2a to 2g for printing and the heating operation of the heating resistor 4 for collecting can be performed independently of each other, so that the heating temperature can be adjusted. It is easy to control, and printing can be easily corrected. In addition, since the heat generating resistor section 4 for collection is formed as a single piece with no divided parts, the heat generating resistor section 4 can be arranged so as to cover the entire printed area. High print correction performance can be obtained. Furthermore, heating resistor parts 2a to 2g for printing are provided on one insulating substrate 1.
The structure is simple because the heat generating resistor 4 for collection is simply arranged in parallel.

[Effect of idea]

Since the thermal head of the present invention is configured as described above, printing correction can be easily performed with high performance, and the structure is simple. This has the effect of keeping production costs low.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing a conventional thermal head, FIGS. 2a and b are explanatory views showing an embodiment of the thermal head of the present invention, and FIG. 2a is a schematic perspective view.
FIG. 2b is a detailed view. 1...Insulating substrate, 2a, 2b, 2c, 2d, 2
e, 2f, 2g...Heating resistor for printing, 3a,
3b, 3c, 3d, 3e, 3f, 3g...Individual conductor pattern part, 4...Heating resistor part for collection,
5... Conductor pattern section, 6... Common conductor pattern section.

Claims (1)

[Scope of utility model registration request] In a thermal head comprising a plurality of heat generating resistors for printing arranged separately on an insulating substrate and a plurality of conductor pattern parts individually connected to these heat generating resistors, . A thermal head, comprising a heat generating resistor for collecting, which is arranged in parallel with the heat generating resistor for printing.