JPH0557910A - Printing head for dot matrix printer - Google Patents

Abstract

PURPOSE:To make a single printing head adaptable for a plurality of the devices having different specifications by providing the printing head of a dot matrix printer with printing wires or thermal elements of different dot pitches. CONSTITUTION:A printing head 1 is provided with impact printing wires (or thermal elements) 3 arranged vertically in two rows at an interval of n/160 inches in the one row and n/180 inches in the other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a dot matrix
The present invention relates to a print head of a printer, and more particularly, to an arrangement of print wires or thermal elements.

[0002]

2. Description of the Related Art In a conventional dot matrix printer print head, one or several rows of printing wires or thermal elements are vertically arranged at intervals of n / 160 inches (where n is a natural number). There is an array of print heads and one or several rows of print heads vertically arranged at intervals of n / 180 inches (where n is a natural number). Specifications of dot matrix printers 1/160 inch specifications, or 1/180
It was prepared for each inch specification.

[0003]

SUMMARY OF THE INVENTION The printhead of this conventional dot matrix printer consists of a single dot
Only the pitch (1/160 inch or 1/180 inch) is supported, and as the dot matrix printer, there are apparatuses having specifications of 1/160 inch or 1/180 inch, respectively.

It is an object of the present invention to provide a print head for a dot matrix printer which enables one print head to be used for devices having different specifications.

[0005]

In order to achieve the above object, a dot matrix printer print head according to the present invention is an impact type print head of a dot matrix printer, and is n / 160 inch. (Where n is a natural number), the impact wire rows are vertically arranged at intervals, and the impact wire rows are vertically arranged at n / 180 inch (however, a natural number) intervals.

The print head of the dot matrix printer according to the present invention is a thermal print head of a dot matrix printer,
Thermal element rows vertically arranged at an interval of / 160 inches (where n is a natural number) and thermal element rows vertically arranged at an interval of n / 180 inches (where n is a natural number).

[0007]

In the present invention, n / 160 inch spacing and n / 18
The print head is made up of impact wire rows or thermal element rows that are vertically arranged at 0-inch intervals, and is compatible with devices of different specifications.

[0008]

The present invention will be described below with reference to the drawings.

FIG. 1A is an external view showing an impact type print head of a dot matrix printer according to an embodiment of the present invention. FIG. 1B is a detailed view showing the main guide 2 of the impact type print head.

As shown in FIG. 1 (B), in the impact type print head 1 of the dot matrix printer of the present invention, the impact wire 3 is arranged in the left one row at 1 /
180-inch intervals, the right row is configured with 1 / 160-inch intervals. With this print head, 1/160 and 1/18
It is compatible with equipment with 0 car specifications.

In this embodiment, 1/180 inch, 1 /
160 inches of 12 impact wires 3 each
However, the number of impact wires 3 is determined according to the specifications of the apparatus.

FIG. 2 shows a staggered arrangement of FIG. 1 (B), in which the distance between the impact wires 3 is 2/180 inch, 2 /
It is 160 inches. Further, when the number of rows in the staggered arrangement becomes n, the spacing between the impact wires 3 becomes n /
It becomes 180 inches and n / 160 inches.

An example of a thermal print head is
The object of the present invention can be easily achieved by replacing the impact wire 3 of the impact type print head in FIGS. 1 and 2 with a thermal element array.

[0014]

As described above, according to the present invention, the dot
N / 1 in the print head of matrix printer
Since it has impact wires or thermal elements with different pitches of 60 inches and n / 180 inches (where n is a natural number), one print head can support devices with different specifications. It is not necessary to prepare a print head corresponding to the pitch.

Further, the dot matrix printer provided with the present print head has an effect that the pitch of printing can be changed by a command from a switch or a host device, and the restriction of the device by software is eliminated.

[Brief description of drawings]

FIG. 1A is an external view showing an embodiment of the present invention,
(B) is a detailed view of the main guide of (A).

FIG. 2 is a detailed view of the main guide when the staggered arrangement of FIG.

[Explanation of symbols]

 1 Impact type printing head 2 Main guide 3 Impact wire

Claims (2)

[Claims] 1. An impact type print head for a dot matrix printer, comprising: impact wire rows vertically arranged at intervals of n / 160 inches (where n is a natural number) and n / 180 inches (however). A print head for a dot matrix printer, which has a row of impact wires vertically arranged at intervals of a natural number. 2. A thermal printing head for a dot matrix printer, comprising: thermal element rows vertically arranged at intervals of n / 160 inches (where n is a natural number), and n / 180 inches (where n Is a natural number) and a thermal element array vertically arranged at intervals. A print head of a dot matrix printer.