JPS61242868A - Positioning construction for recording head - Google Patents

Abstract

PURPOSE:To facilitate manufacture of a base ensuring perfect fitting thereof with a plate for fixing and fitting a bush to a prescribed position of the base, by a method wherein when fixing a base with a recording head mounted thereon and a main body, the base is positioned and fixed by fitting fixing pins into position-adjustable fixing holes and using an adhesive filler through a mount plate provided with the fixing holes corresponding to a main body mounting position. CONSTITUTION:In a base plate 4, a fixing jig 20 and the mount plate 5, holes 26, 23 provided in the fixing jig 20 are used with pins 15, 16, 17 to position the plates 5, 4 in the vertical direction, a hole 26 and a hole 21 provided in the mount plate 5 are used with the pin 16 to position the plate 5 and the jig 20, and a pin 16 tentatively placed in a hole 23 is fixed to the plate 5 by the adhesive filler 19. Simultaneously, the pin 15 tentatively disposed with an upper part of a hole 23 as a guide is fitted in a hole 25 of the base plate 4 through a bush 18, a prescribed length M between a printing element 2 and the pin 16 is measured by a length-measuring instrument, and then the adhesive filler 19 is placed between the hole 25 and the bush 18 to fix the bush 18. The other end is fixed in the same manner.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a structure for accurately positioning a recording head used in a thermal transfer recording device or the like.

[Summary of the invention]

The present invention provides a positioning structure for a recording head of a thermal transfer recording device, in which when the base on which the recording head is mounted is fixed to the main body, the main body is attached via a mounting plate provided with fixing holes corresponding to the position. , the base is positioned and fixed in a fixing hole whose position can be adjusted using a fixing pin and an adhesive filler.

[Conventional technology]

Conventionally, as a positioning structure for the thermal head 3, the thermal head 3 is generally fixed to a base 4 as shown in FIG. The printing element 2 needs to be placed at the position where the pressure is maximum, that is, at the contact point.

As shown in FIG. 4, the dimensions of the jig 8 temporarily fixed to the base 4 with screws 9 are measured using a length measuring device or the like so that the relative positional relationship between the platen roller 1 and the printing element 2 is the same as that shown in FIG. 3. JP-A-56-98189 discloses a structure in which the substrate 4 is positioned and fixed on the mounting plate 5 by positioning and fixing the board 4 on the mounting plate 5 by tightening the screw 6 while pressing the platen shaft 7 and the jig 8.

[Problem that the invention seeks to solve]

However, in the conventional structure shown in FIG. 3, the relative position of the base 4 and the printing element 2 must be accurately determined in order to obtain complete compatibility between the base 4 and the mounting plate 5, and high precision is required. Processing was required, and the manufacturing cost was disadvantageous for mass-produced structures.

In addition, in the structure shown in Fig. 4, in order to place the base 4 at the specified position, the screws 6 are tightened with the jig 8 and the platen shaft 7 pressed together, but the difference between the pressing force and the tightening force of the screws is The position of the base 4 is also likely to change due to changes, and each time the base 4 is repaired or replaced, it is essential to use the jig 8 and the machine to be repaired to position it, which reduces maintainability after the equipment is sold. There were many problems.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a mounting plate corresponding to the main body fixing position in order to appropriately position the outer periphery of the platen roller and the printing element of the recording head; Using a fixing jig that corresponds to the fixing position of the main body, the base on which the recording head is mounted can be adjusted so that the printing element of the recording head is positioned at a specified position using the fixing jig, and positioning is performed using an adhesive filler or the like. I did it like that.

〔Example〕

In FIG. 2, the recording head 3 is fixed to a substrate 4 by adhesive or the like. The substrate 4 and the fixing jig.

Holes 26 and 23 provided in the fixing jig are provided for vertical positioning of the mounting plate 5 and the board 4 using pins 15, 16 and 17, and the holes 26 and the mounting plate 5 are A hole 21 provided in the hole 21 is used to position the mounting plate and the fixing jig 20 using a pin 16, and a pin 17 temporarily provided in the hole 23 is fixed to the mounting plate 5 with an adhesive filler 19. At the same time, a temporary pin 15 is fitted into the hole 25 of the base 4 with a bush 18, using the upper part of the hole 23 as a guide, and after positioning the specified length M between the printing element 2 and the pin 16 using a length measuring machine. , an adhesive filler 1 is placed between the hole 25 and the bushing 18.
9 fixes the bushing 18.

The other end is similarly fixed. Fixing jig 2 is fixed by the above method.
0, the position of the printing element 2 of the recording head 3 with respect to the platen roller 1 provided on the main body is determined by pins 15 and 16.
．． 17.

FIG. 1 is a cross-sectional view when the recording head is attached to the main body of the thermal transfer type recording device, and the pin 17 fixed to the mounting plate 5 with adhesive filler is inserted through the bush 18 which is also fixed with adhesive filler. The base 4 is positioned.

In this embodiment, the bushing 18 is fitted onto the fixing pin 17 to improve the durability of attachment and detachment from the base 4.
It goes without saying that the same durability can be maintained even if only the adhesive filler is used. Further, the adhesive filler used for positioning and fixing the base 4 and the mounting plate 5 is not limited to the base and the mounting plate.

〔Effect of the invention〕

As explained above, it is easy to fix the bushing 18 at a specified position on the base 4 without being subject to time and quantity restrictions separately during the assembly work of the equipment, and it is possible to completely fit the bushing 18 with the mounting plate. In addition to making it easier to manufacture a certain base and positioning the printing element without making adjustments, even an unskilled person can replace the recording head of devices already on the market in a short time.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the recording head attached to the main body of a device such as a thermal transfer recording device, Figure 2 is a cross-sectional view when positioning the recording head offline, and Figure 3 is the print element of the recording head. FIG. 4 is a cross-sectional view showing a conventional recording head positioning method. 1-1-Platen roller 2-Printing element 3-Recording head 4-・Base 5-Mounting plate 15.16.17--Pin 19-Adhesive filler or more

Claims (1)

[Claims] A) a recording head in which printing elements arranged in a line are formed on a plate; b) a platen roller for bringing the printing elements into close contact with recording paper; and c) a recording head on which the recording head is placed. d) a base having an adjustment hole for adjusting the position of the recording head; and d) a means for positioning and fixing the recording apparatus main body so as to fit into the adjustment hole of the base to position the base. A recording head positioning structure comprising: a mounting plate having a fixing pin; and e) an adhesive filler for positioning the fixing pin with the mounting plate and the base.