JPS6079968A - Printer head of printer - Google Patents

Abstract

PURPOSE:To permit easy installation and mass production of a low cost printer head by making an arm and a printer as a solid piece consisting of piezo-electrical elements and by providing printing surface of the printer head with anti- abrasion coating. CONSTITUTION:An arm 12 and a printer head 13 are made as a solid piece consisting of piezo-electrical elements. A coating of anti-abrasion is applied at least to the printing surface of said printer head. Additionally, it is recommended that the coating of printing surface will also serve as the coating of piezo-electrical elements.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a printer head of a printer device formed using a piezoelectric element. A printer device of a computer is capable of outputting memory output and arithmetic processing results by printing them on paper, and therefore it is possible to print a memory output or arithmetic processing results on paper. This is effective when saving the execution results in a visible format.

In addition, as a peripheral device for today's computers, there is a device that can express characters and figures by combining multiple wires (bins) and hitting dots on a sheet of paper. Dot impact type dot printer devices have become widely used.

In such a dot printer device, for example, nine wires arranged in a vertical line are projected seven times from left to right, and some of the 9 x 7 dots are printed in a certain square to print characters, etc. 0 Also, dot printers have the advantage of being able to print any engraved characters or shapes since each character is represented by dots with the divine number rβ1. Since it is electromagnetically driven using a solenoid, sufficient printing force can be obtained, but due to the operating inertia of the wire, the time constant of the lunoid, etc., the printing speed cannot respond to the output speed of the computer, and it is difficult to use multiple solenoids. Because a large current is passed intermittently, power loss becomes loose and cross-linking occurs easily.As a result, insulation processing becomes troublesome.
There was one deficiency.

In response to this problem, the present applicant has proposed a printer head that uses a piezoelectric element that has extremely low power loss and a much faster printing speed. This printer head is designed to be able to print via a switch 1 as shown in Figure 1. It consists of an arm part 3 of a piezoelectric element to which a DC power supply voltage of 2 is applied, and a bottle-shaped print head 4 made of a wear-resistant metal phase or ST fixed to the end of this arm part 3 by pasting or the like. . A chrome plating layer ρ is provided on the surface of the arm portion 3, and this constitutes one electrode 5. 06 is the other electrode which is an intermediate electrode provided insulated from the chrome plating layer. Electrodes 5.6 are connected to the DC power source 2 as shown.

In such a piezoelectric element type printer head, a voltage is applied to the piezoelectric element of the arm portion 3 to cause distortion therein, and the displacement force caused by this distortion is used to obtain printing force. By driving the switch 1 at high frequency, for example, 2000 to 6000 characters can be written per second.
In addition to being able to print characters at high speed, it also has the advantage of reducing power consumption and emitting less heat.

However, with the above printer head, it is extremely troublesome to remove the small pin-shaped print head 4, for example, 0.5mm in length and 0.16mm in diameter, from the arm 3, and furthermore, the inclination of the printing head 17il with respect to the platen is extremely troublesome. Setting the angle (for example, 7 degrees) and aligning the print head with other print heads have become extremely difficult. It is an object of the present invention to provide a printer head for a printer device which can be easily and inexpensively positioned with respect to an arm part, and which can be easily and inexpensively obtained. The print head is integrally formed with a piezoelectric element, and at least the printing surface of the print head is coated with a coating of abrasive material. 0. Figure 2 specifically shows one embodiment of the invention. In the figure, 11 is a printer head, in which an arm portion 12 and a print head 13 are integrally formed by a piezoelectric element, and at least the printing surface at the end of this print head 13 is coated with a wear-resistant layer such as a chrome plating layer. A coating of detergent is provided.

Further, 14 is one electrode of the piezoelectric element, and is a conductive plating layer of chromium or the like. 15 is an intermediate electrode. These two electrodes 14 and 15 are connected to a DC power source 1 via a switch 16.
The electrode on the printed surface C to which 7 is connected forms a coating that protects this printed surface from wear. Therefore, when the electrode 14 does not cover the entire piezoelectric element, a coating 18 as shown in FIG. 3 is provided only on the printed surface.

In the printer head having such a configuration, the arm portion 12 and the print head 13 are integrally formed at the same time using a piezoelectric element, so the troublesome work of installing the print head portion as in the conventional method can be omitted, and therefore the printer head assembly is easy. The work becomes more efficient and mass production can be achieved (reducing the cost of printer equipment).In addition, the 11 pine electrodes on the printing surface mentioned above (the printing surface 11 which is further plated on top and has high surface durability) If the above coating wears out and breaks, it will cause a 1L electrical disconnection accident and end the life of the printer head, but from the total number of prints. Therefore, it has a much longer lifespan than conventional printer heads.

As explained and clarified above, according to the present invention, arm FXl (
By integrally forming the print head with a piezoelectric element and coating at least the printing surface of the print head with a coating having a resistance of 1lli+7% to 1, a printer can be obtained easily and inexpensively. The practical advantage of significantly improving surface durability is ・j! It's something I like.

[Brief explanation of the drawing]

Fig. 1 shows a cross section of a printer head used in a conventional printer device B (/Koishino!).・Printer head 12...Arm portion 13...Print head 14.15...Electrode 17...Power supply Patent applicant Tadashi Sekiguchi, attorney Patent attorney Sadada Shimizu Fiduciary procedural amendment February 14, 1982 Kazuo Wakasugi, Commissioner of the Japan Patent Office 1 Display of the case 1987 Patent No. 1111187846 2 Name of the invention Printer head of a printer device 3 Person making the amendment Relationship to the case Patent applicant 4, Agent 7, Subject of the amendment ``Brief explanation of the drawings'' column of the specification. 8. Contents of amendment The ``Brief explanation of the drawings'' of the attached specification shall be supplemented as follows. 11 is a cross-sectional view of the printer head used, FIG. 2 is a cross-sectional view showing one embodiment of the printer head of the present invention, and FIG. 3 is a cross-sectional view showing a modification of the second embodiment. ... Printer head 12 ... Arm part 13 ... Print head 14.15 ... Electrode 17 - Power source

Claims (2)

[Claims] (1) A printer head for a printer device, characterized in that an arm portion and a print head are integrally formed using a piezoelectric element, and the printing surface of the print head is coated with a wear-resistant material. (2) A printer head for a printer device according to claim 1, wherein the coating on the printing surface also serves as an electrode coating for a piezoelectric element.