JP2002347300A - Recording head for serial printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a recording head to be mounted without separating a guide rod. SOLUTION: A slidable element 6 to be guided for holding a main guide 21 on a printer body and a sliding contact projection 8 which slides on a sub guide 24 are set to a part of a recording head construct 1. On the other hand, a holding element 12 for holding the main guide 21 in cooperation with the element 6 to be guided is set to a part of a coupling frame 10 fitted in the recording head construct body 1. The recording head can thus be mounted to be runnable to the printer body without separating the main guide 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a recording head for a serial printer.

[0002]

2. Description of the Related Art In general, as shown in Japanese Patent Application Laid-Open No. H11-192719, a carriage used for a serial printer has one of the main guide lots arranged in the direction of the platen girder and the other a part of a frame. Is mounted so as to reciprocate in the main scanning direction while being guided by a sub-guide member formed by bending.

[0003] Therefore, when it is necessary to replace this type of carriage, the carriage is removed from the main guide rod previously removed from the printer body, a new carriage is inserted therethrough, and the guide rod is reinserted. In addition to the inconvenience of having to assemble the printer with the print head, the inconvenience that normal recording and writing cannot be expected when there is a play between the recording head and the recording head. .

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem.
It is an object of the present invention to provide a new recording head for a serial printer that can be assembled without requiring attachment and detachment of a guide rod and that enables highly accurate recording and writing.

[0005]

That is, according to the present invention, as a recording head for a serial printer for achieving the above object, a main scanning part formed in a printer main body is formed in a part of a recording head structure traveling in a main scanning direction. A first guided portion that slides while holding a first guide member extending in the direction, and a second guided portion that slides on the second guide member are provided, and are fitted with the recording head structure. A part of the mating member is provided with a part that sandwiches and slides the first guide member in cooperation with the first guided part.

[0006]

Embodiments of the present invention will be described below. The drawings show an embodiment of the present invention configured as a recording head for an ink jet printer.

In the drawing, a recording head structure denoted by reference numeral 1 has an ink jet recording head 2 on its lower surface.
A mounting unit 3 for mounting a black ink and an ink cartridge (not shown) containing black ink and a color ink composed of yellow, magenta, and cyan is provided directly above the mounting unit 3. Further, these rear portions are configured so as to be surrounded by a coupling frame 10 described later that is coupled to the recording head assembly 1.

On both sides of the front end of the recording head assembly 1, a downwardly U-shaped first guide member, that is, a main guide 21 extending in the main scanning direction, which is formed right above the recording / writing section, extends from the front and rear. The first guided portion, that is, the guided piece 6 is provided, and a coupling portion for coupling to a timing head (not shown) is provided at the center of the front end face.

In the recording head assembly 1, a fitting piece 7 for fitting with the above-mentioned coupling frame 10 is horizontally extended at a rear end portion thereof.
0, a second guide member extending in the main scanning direction in the main scanning direction, that is, a sliding contact projection 8 that slides on the surface of the sub guide 24 to hold the recording head assembly 1 horizontally, that is, a second guided portion. It is protruding.

On the other hand, reference numeral 10 in the figure denotes a connecting frame which is connected to the rear of the recording head assembly 1. On both sides of the connecting frame 10, the both sides of the recording head assembly 1 are held integrally. A pair of arm pieces 11, 11 joined to the main body 21 protrude horizontally, and further inserted into the lower end of the main guide 21 in a U-shaped concave section 22 in the lower half of the main guide 21 at the tip of the arm piece 11 to be guided. 6, an upward holding piece 12 for holding the main guide 21 from above and below is provided.

Reference numerals 5b, 5c,... Denote ink through-holes leading to the recording head 2, and 13 denotes engagement holes which engage with engagement projections 9 provided on both sides of the recording head assembly 1. A hole is shown.

In the embodiment constructed as described above, in order to assemble the recording head to the printer main body, first, the recording and writing is performed so that the guided piece 6 is straddled over the main guide 21 which is formed up. The recording head assembly 1 is placed above the portion, and under this condition, the bottom surface is made to fit along the fitting piece 7 and the arm pieces 11 on both sides are placed.
Is pushed along the both sides of the recording head assembly 1 and the connecting frame 10 is pushed into the recording head horizontally from behind the assembly 1.

Thus, at the rear end of the pushing, the arm 1
The leading end of the recording head assembly 1 penetrates into the U-shaped concave portion 22 in the lower half of the main guide 21, and holds the main guide 21 between the guided pieces 6, 6 from above and below. Since the recording head assembly 1 is integrated with the sub guides 2, the front end of the recording head assembly 1 is
4, the vehicle can travel in the main scanning direction.

Therefore, if the timing belt connected to the recording head assembly 1 is finally pulled by a drive motor (not shown), the recording head assembly 1
The vehicle will start traveling accurately in the direction of the main inspector while being guided by 1,24.

If it is necessary to remove the recording head assembly 1 from the printer body for some reason,
The recording head assembly 1 can be removed from the main guide 21 by sliding the coupling frame 10 backward after removing the coupling holes 13 and the coupling protrusions 9.

Although the present invention has been described above with reference to an example of an ink jet recording head, the present invention can be applied to a recording head 1 adopting a heat-sensitive type or a wire impact recording head. Needless to say.

[0017]

As described above, according to the present invention, the first guide member on the printer member slides while holding the first guide member on a part of the recording head assembly traveling in the main scanning direction. A guided portion and a second guided portion that slides on the second guide member are provided, and a part of the member that fits with the recording head assembly cooperates with the first guided portion to form the first guided portion. Are provided so that the recording head itself can be a guide rod without the need for removing the guide rod or the like from the printer body and without the need for a carriage or the like. It is possible to greatly simplify the assembling of this type of recording head and at the same time significantly improve its scanning accuracy,
Further, the number of components can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a recording head structure showing one embodiment of the present invention.

FIG. 2 is a side view showing the recording head assembly in the assembled state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Recording head structure 6 Guided piece 8 Sliding projection 10 Coupling frame 11 Arm piece 12 Holding piece 21 Main guide 24 Sub guide

Claims (1)

[Claims] 1. A first guided portion slidably holding a first guide member formed in a printer main body and extending in the main scanning direction, on a part of a recording head assembly traveling in the main scanning direction. ,
A second guided portion that slides on the second guide member is provided, and a part of the member that fits with the recording head structure is provided with a part of the first guided portion in cooperation with the first guided portion. A recording head for a serial printer, comprising a portion that slides while sandwiching a guide member.