JPH05261908A - Ink jet printer - Google Patents

Abstract

PURPOSE:To increase strength by forming non-perforated sections without through-holes on both edges of a perforated film in an ink jet printer provided with a perforated film provided with very fine through-holes, an ink roller for filling ink into the through-holes and a thermal head. CONSTITUTION:Ink is filled in a number of very fine through-holes 11 provided on a perforated film 1. Pulse signals are issued to a thermal head 3 being in contact with the rear face of the perforated film 1, and ink filled in the through- holes 11 is heated to form ink drops, which are jetted toward a component 4 to be recorded disposed on the front face of the perforated film 1 and made to adhere thereon and printing is carried out. The perforated film 1 is linked with the uniform rate in the given direction, and the ink is replenished into through-holes 11 jetted in the positions adjacent to the thermal head 3 by an ink roller 2 to prepare for following printing. The perforated film 1 is composed of a perforated section 12 with through-holes 11 at its center and non-perforated sections 13 without through-holes 11 on both edges, and strength is increased to a large extent by the action of the non-perforated sections 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet printer which prints by ejecting ink droplets to form characters and figures on a recording member.

[0002]

2. Description of the Related Art Conventionally, printers of various printing systems have been used. Among them, ink jet printers that perform printing by ejecting ink droplets to form characters and figures on a recording member. Has low power consumption,
It has the advantages that it operates with low noise and that it is easy to miniaturize and colorize.

However, the ink jet printer has a problem of low reliability because the problem of clogging of nozzles for ejecting ink droplets has not been completely solved.

In order to solve such a problem, an ink jet printer as shown in FIG. 3 has been proposed (see JP-A-60-71260).

In the ink jet printer shown in FIG. 3, ink is held in a large number of through holes 32 formed in a film 31, and the ink is heated by a thermal head 33 and boiled so that the ink is ejected and printed on a printing paper 34. Printing is performed by depositing ink droplets on the to form characters and figures. This method uses a large number of through holes 32 formed in the film 31 as nozzles without using a fixed nozzle, and sequentially moves a large number of through holes 32 formed in the film 31 while moving the film 31. Since the ink filled therein is boiled and ejected, it is difficult to cause clogging.

[0006]

The film of the conventional ink jet printer as described above has a drawback of low strength because the through holes are formed on the entire surface.

[0007]

An ink jet printer according to the present invention comprises a perforated film having a large number of minute through holes, an inking roller for filling the through holes of the perforated film with ink, and the inking. An ink jet printer comprising an ink container for supplying the ink to a roller, and a thermal head which is disposed in contact with the back surface of the perforated film and selectively heats and ejects the ink filled in the through hole, The non-perforated part in which the through hole is not formed is provided at both edges of the perforated film.

[0008]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a plan view showing a perforated film of the embodiment shown in FIG. 2, and FIG. 2 is a perspective view showing an embodiment of the present invention.

In FIG. 2, a large number of minute through holes 11 (see FIG. 1) provided in the perforated film 1 are filled with ink. A thermal head 3 is disposed in contact with the back surface of the perforated film 1, and the thermal head 3 is provided with a pulse signal so that the through hole 1
The ink filled in 1 is heated to form ink droplets,
Printing is performed by causing the ink droplets to fly toward and adhere to a recording member (printing paper) 4 arranged on the front surface of the perforated film 1. The perforated film 1 is moving at a constant speed in a certain direction. An inking roller 2 is in contact with the back surface of the perforated film 1 at a position adjacent to the thermal head 3.
Prepares for the next printing by supplying ink to the through hole 11 after the flight. The inking roller 2 is supplied with ink from an ink container (not shown).

As shown in FIG. 1, the perforated film 1 is provided with a through hole 11 at its center to form a perforated portion 12, and both edge portions are formed as non-perforated portions 13 having no through hole. By configuring the perforated film 1 in this way, the non-perforated portion 1
By the action of 3, the strength can be significantly improved as compared with the conventional one.

[0012]

As described above, the ink jet printer of the present invention is provided with the non-perforated portions not having the through holes at the both edges of the perforated film, so that the strength of the ink jet printer is greatly increased as compared with the conventional one. There is an effect that it can be improved.

[Brief description of drawings]

FIG. 1 is a plan view showing a perforated film of the embodiment of FIG.

FIG. 2 is a perspective view showing an embodiment of the present invention.

FIG. 3 is a perspective view showing an example of a conventional inkjet printer.

[Explanation of symbols]

 1 Perforated film 2 Inking roller 3 Thermal head 4 Printing paper 11 Through hole 12 Perforated part 13 Non-perforated part 31 Film 32 Through hole 33 Thermal head 34 Printing paper

Claims (2)

[Claims] 1. A perforated film having a large number of minute through-holes, an inking roller for filling the through-holes of the perforated film with ink, and the through-hole provided in contact with the back surface of the perforated film. An ink jet printer provided with a thermal head that selectively heats and ejects the ink filled in the holes, wherein non-perforated portions that do not form the through holes are provided at both edges of the perforated film. And inkjet printer. 2. A perforated film having a large number of minute through holes, an inking roller for filling the through holes of the perforated film with ink, and an ink container for supplying the ink to the inking roller. An ink jet printer provided with a thermal head which is disposed in contact with the back surface of the perforated film and selectively heats and ejects the ink filled in the through holes, wherein the both edges of the perforated film are An inkjet printer having a non-perforated portion having no through hole.