JPS626998B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording head device, and more particularly, the present invention relates to a recording head device.
The present invention relates to a recording head device in which the fixing means for fixing the recording head main body of the recording head device in a recording apparatus and a holder to which the main body is attached has been improved.

Conventionally, as shown in FIG. 1, a means for fixing a recording head body 1 of a recording head apparatus A such as an inkjet head in a recording apparatus such as an inkjet printer and a holder 2 to which the main body is attached is as shown in the figure. Using the tightening screw 3 was almost the only means.

However, this fastening means has the following problems. That is, (1) For example, when performing multicolor printing with the inkjet printer, or when increasing the printing speed, the recording head main body 1 is placed in the holder 2.
More than one may be installed in parallel. In this case, the mutual positional relationship between the recording head bodies 1 is several microns to
It is necessary to adjust with an accuracy of about 10μ. Conventionally, this adjustment has been made by slightly loosening the tightening screw 3, finely adjusting the horizontal position of the recording head body 1 with the adjusting screw 4, and then tightening the tightening screw 3 again at the best position.

However, when the screws are tightened after adjustment as described above, the recording head main body 1 and the holder 2
A deviation of several tens of microns easily occurs due to changes in the gap between the parts, deformation strain of each member, or deviation due to frictional force between the tightening screw 3 and each member.
Therefore, it is very difficult to adjust the mutual positional relationship between the respective recording head bodies 1 within the above-mentioned allowable accuracy range.

(2) Furthermore, the recording head main body 1 is configured to spray ink toward the recording paper from very thin nozzles (not shown) formed therein during inkjet printing. The nozzle may become clogged due to dust contained therein, and the recording head body 1 is often removed from the holder 2 for cleaning or the like.

However, in the conventional type, the recording head main body 1 is attached to the holder 2 by a tightening screw 3 as shown in the figure, and therefore, the attachment work including the removal and fine adjustment operations is extremely complicated.

The present invention was made in view of the above-mentioned circumstances, and
The object of the present invention is to provide an extremely effective and suitable recording head device that solves all of the above-mentioned problems, and its features include a holder, a plurality of fastening grooves provided in the holder, and each fastening groove. A magnet is provided on the bottom surface of each of the retaining grooves for attracting and fixing the recording head body, and one of the plurality of recording head bodies is provided with a magnet for attracting and fixing the recording head body. One of the recording head bodies is fixed in its vertical and horizontal positions by the fixing groove, and the other recording head main body is fixed in its vertical position by the fixing groove and its horizontal position is regulated by the fixing groove. The point is that it is configured to be freely adjustable.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The recording head device of the present invention will be described below by way of embodiments with reference to the drawings.

A recording head device E according to the present invention shown in FIGS. 2 to 4 is constructed by fixing a recording head main body 1 and a holder 2 via a magnet a so as to be adjustable in position.

Further, the structure of the recording head device E mentioned above will be explained in detail as follows.

As shown in FIGS. 2 and 3, the recording head main body 1 has a convex portion 1a that slightly protrudes forward at the center of the front surface, and an ink ejecting nozzle is located in the center of the convex portion 1a. 1b is provided, and the convex portion sides 1d, 1d of the flange portions 1c, 1c formed on both sides are formed of a magnetic material such as iron or steel-based stainless steel.

Further, as shown in FIG. 2, in this embodiment, the holder 2 has left and right holder portions 2a and 2b formed on both left and right sides when viewed from the front, and each of the holder portions 2a and 2b has the Recording head body 1
Two upper and _lower retaining grooves 5 are formed for retaining the magnet _a .
are embedded in each. Among these fixing grooves, the lower fixing groove ₅₂ is formed in such a size that the recording head main body 1 can be tightly fitted into it and fixed (adsorbed) by the magnet a. However, as shown in FIGS. 2 and 3, the upper fixing groove ₅₁ has a vertical dimension that allows the recording head body 1 to fit therein, but a horizontal dimension that allows the recording head body 1 to be moved left and right. , are formed larger than the left and right dimensions of the recording head main body 1. 6 is a spring,
The recording head main body ₁ is installed in the left side holder part 2a of the upper fixing groove 51 and is fixed in the upper fixing groove ₅₁ by each of the magnets a.
It is constantly pressed to the right. Therefore, by rotating the adjusting screw 4 screwed into the right holder portion 2b clockwise, the recording head body 1 can be moved to the left, and by rotating it counterclockwise, the recording head body 1 can be moved by the pressing force of the spring 6. This allows the recording head main body 1 to be moved to the right.

Further, as shown in FIG. 4, the holder 2 is formed into a substantially L-shape when viewed from the side in this embodiment.
A feed screw 7 for moving the recording head device E left and right is screwed onto the base 2c. A guide hole 8 is bored in the base 2c in parallel with the feed screw 7.

Although the internal structure of the recording head body 1 is not shown in this embodiment, to briefly explain, in the case of a recording head body of an inkjet printer, a piezo element and a vibrating element are installed inside the recording head body 1 on the back side. A plate is provided, and when this piezo element is driven by a voltage pulse, the diaphragm vibrates, and the ink in the ink chamber provided in the main body 1 is pressurized, and the ink is ejected from the ink jet nozzle 1b. It is configured such that ink particles are ejected and printed on a recording paper (not shown) on a recording paper mounting device provided on the front face facing the recording head device E.

As described above, the present invention includes a holder, a plurality of fastening grooves provided in the holder, and a recording head body fitted into each of the fastening grooves, and the bottom surface of each of the fastening grooves is , a magnet is provided for attracting and fixing the recording head bodies, and one of the plurality of recording head bodies is fixed in vertical and horizontal positions by the fixing groove; Since the vertical position of the other recording head main body is regulated by the fixing groove and the horizontal position is adjustable, the recording head main body can be moved by simply turning the adjustment screw. Not only can the lateral position of the recording head be finely adjusted, but also the mutual positional relationship between the respective recording head bodies, which has been extremely difficult in the past, can be easily adjusted within the allowable accuracy range.

Also, since the recording head body is attached to the holder only by magnets, its removal and
The installation work is extremely easy compared to the conventional one, and together with the simplification of the fine adjustment operation, the reproducibility of the position is also very good, and it goes without saying that work efficiency can be significantly improved. The effect is extremely large, as the structure is simple and can be obtained at low cost.

[Brief explanation of the drawing]

FIG. 1 is a plan sectional view of a conventional recording head device, FIGS. 2 to 4 show embodiments of the present invention, FIG. 2 is a front view, and FIG. A plan sectional view, and FIG. 4 is a side sectional view taken along the line of FIG. 2. 1...Recording head body, 2...Holder, a...
magnet.

Claims (1)

[Claims] 1 comprises a holder, a plurality of retaining grooves provided in the holder, and a recording head body fitted into each retaining groove, and the recording head body is attracted to the bottom surface of each of the retaining grooves. , a magnet for fixing is provided, one of the plurality of recording head bodies is fixed in vertical and horizontal positions by the fixing groove, and the other recording head bodies are A recording head device characterized in that a vertical position is regulated by the fixing groove, and a horizontal position is adjustable.