JPH059177Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is an electrostrictive drive system that prints dots by enlarging and transmitting the dimensional distortion generated by the electrostrictive longitudinal effect of the impact printing head, especially the ceramic element, to the printing wire. The present invention relates to an impact printing head equipped with a plurality of printing elements.

[Conventional technology]

Conventionally, this type of impact printing head
For example, there is a printing head described in Japanese Patent Application No. 58-139039. This printing head has a structure in which a plurality of printing elements each having a ceramic element as an actuator are stacked and assembled, and impact printing of a dot pattern is performed depending on whether or not a driving voltage is applied to each actuator. A lead for guiding a drive signal is connected to the ceramic element of each printing element, and each lead is bundled and connected to a drive circuit provided outside the print head.

[Problem that the invention attempts to solve]

In the conventional impact printing head described above, the leads connected to each ceramic element of a plurality of printing elements must be bundled and guided to the drive circuit, and especially when the number of dots is large and therefore the number of printing elements is large, the leads are There is a problem in that the space occupied increases, and the number of man-hours for lead connection (soldering, etc.) and the number of man-hours for associating each actuator with the drive circuit terminal also increase.

An object of the present invention is to provide an impact print head that solves the above-mentioned problems and requires less man-hours for connecting each print element to a drive circuit than in the past.

[Means for solving problems]

The printing head of the present invention has a construction in which a plurality of printing elements are stacked and mounted on a head stand, which uses a lever mechanism to magnify the dimensional distortion generated in the ceramic element in response to a drive signal and transmits it to the printing wire to print dots. The impact printing head has at least one flexible wiring board provided with wiring for guiding the drive signal to the ceramic element of the printing element, and the wiring board connected to the ceramic element is connected to the printing element. It passes above the stack of elements and is led out below the head stand through a slit provided in the head stand.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

Figures 1a and 1b are a top view and a cross-sectional front view showing an embodiment of the present invention, respectively;
shows the XX cross section in the same figure a. The printing elements 1A and 1B are electrostrictive drive elements that use a lever mechanism to magnify the dimensional distortion that occurs when a drive voltage is applied to the ceramic element 10 and transmit it to the printing wire 11 to perform dot printing. The printing elements 1A and 1B are stacked and held on a head stand 2, and a printing wire 11 is passed through a guide hole of a wire guide 21 so that its tip is guided to the printing surface.

A lead 12, which has one end connected to the ceramic element 10 which is the actuator of each printing element 1A and 1B, is a conducting wire for applying a drive signal, and the other end is connected to the flexible wiring board 5. The flexible wiring board 5 is provided with wiring for guiding a drive signal generated from a drive circuit outside the head to an actuator inside the head, and is provided along a reinforcement plate 6 provided on the side of the printing elements 1A and 1B. The printhead is guided upwardly, passes above the stack of printing elements 1A and 1B, and is guided through a slit 4 provided in the center of the head stand 2 to a drive circuit (not shown) outside the head. Note that a cover 7 is placed over the head stand 2 and fixed.

As described above, in this embodiment, the ceramic element 10 is connected to the flexible wiring board 5 inside the head, and this is led to the drive circuit outside the head.
It is possible to reduce the space occupied by connections and reduce the number of connection steps.

[Effect of idea]

As explained above, the present invention has the effect of realizing an impact printing head that requires fewer man-hours for connecting each printing element to a drive circuit than in the past.

[Brief explanation of drawings]

FIGS. 1a and 1b are a top view and a cross-sectional front view, respectively, showing an embodiment of the present invention. 1A, 1B...printing element, 10...ceramic element, 11...wire, 2...head stand,
21...wire guide, 4...slit, 5...
Flexible wiring board, 6... patch plate, 12... lead.

Claims (1)

[Claim for Utility Model Registration] A structure in which a plurality of printing elements are stacked and mounted on a head stand to print dots by magnifying the dimensional distortion generated in the ceramic element in response to a drive signal using a lever mechanism and transmitting it to the printing wire. The impact printing head has at least one flexible wiring board provided with wiring for guiding the drive signal to the ceramic element of the printing element, and the wiring board connected to the ceramic element is connected to the ceramic element of the printing element. An impact printing head characterized in that the head passes above a stack of printing elements and is led out below the head stand through a slit provided in the head stand.