JPS62105633A - Recorder - Google Patents

Abstract

PURPOSE:To prevent colors from mis-registering among the respective colors by disposing a washer tank at the takeup side of a film, and selectively contacting under pressure a plurality of color ink supply cartridge one by one on the film of the takeup side, thereby color printing the film by one head. CONSTITUTION:A washer tank 12 in which cleanser is filled is disposed at the takeup side of a film 6, and a mechanism for cleaning the film at every time by dipping the film 6 in the cleanser by a washer roller 11 is provided. A plurality of color ink supply cartridges 9 are provided to be sequentially used for one film 6, thereby color printing by one head 5. In case of color printing, when first color ink supply cartridge 9 is contacted under pressure on the film 6 and the film 6 is driven, the ink is filled in the pores of the film 6 to be printed by heating it on the thermal head 5. Then, second color ink supply cartridge is contacted under pressure, and the series of the operations are repeated. Thus, the color printing is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an inkjet type hard copy device.

[Summary of the invention]

The present invention is an inkjet recording device that fills a porous film with ink, heats the ink, generates bubbles, and prints on the opposing paper surface. By installing a washer tank and immersing the film in the cleaning liquid with a washer roller, the film can be washed one time at a time, and it has several colors of ink supply cartridges that can be used sequentially with one film. This allows color printing to be performed with one head.

[Prior art]

Conventionally, the inkjet method is widely known as a method in which printing is performed by intermittently blowing out minute amounts of ink using pressure from the tip of an extremely fine nozzle. However, in this method, the nozzle hole diameter is extremely small at 0.1 to 0.5 mm, so
Ink clogging has become a major problem, and various treatments have been implemented to counter this problem, but the equipment is extremely expensive to manage, and moreover, the high precision of parts such as nozzles has reduced the cost. There was also the problem of not being able to offer it to the market due to the price. Therefore, with the aim of solving ink clogging and reducing costs using the same inkjet method, inkjet printers using porous films, such as those published in Japanese Patent Application Laid-Open No. 60-712,
No. 60 has been invented. This type of inkjet printer fills ink into countless fine pores formed in a film, and then a thermal head, for example, is brought into contact with one side of the film, and bubbles are generated in the pores of the film by the heat of this thermal head. The ink in the hole was blown away by the pressure of 100 mL, and the ink was printed on recording paper placed opposite to each other, thus solving the problems of inkjet printers using the above-mentioned nozzles.

[Problem that the invention seeks to solve]

However, since this method uses liquid ink,
There is a problem in that multicolor printing cannot be performed with one head because the film and thermal head get dirty.

[Means to solve the problem]

In order to solve the conventional problems, the present invention places a washer tank filled with volatile cleaning liquid on the winding side of the film, a washer roller to soak it in, and a washer tank of several colors on the winding side of the film. The ink supply cartridge was configured with a device that selectively presses the ink supply cartridge one color at a time against the film.

[Effect]

When printing in color, the ink supply cartridge for the first color is pressed against the film and the film is driven. The holes in the film are filled with ink, and the ink is heated on the thermal head to perform printing. At this time, a part of the unnecessary ink adheres to the thermal head. After printing, the film is washed with a volatile cleaning liquid in a washer tank. As described above, when printing is completed for the length of the film, the first color ink supply cartridge that was in pressure contact with the film is removed from the film, and the film is unwound. Here, dirt on the thermal head is washed off by the film adhering to the volatile cleaning liquid discharged from the washer tank, and the volatile cleaning liquid is dried by the heat of the thermal head, completing simultaneous cleaning of the film and the thermal head. Next, the second color ink supply cartridge is pressed against the film, and the above series of operations is repeated. Color printing is performed as described above.

〔Example〕

Embodiments of the present invention will be described below based on the drawings. 1st
In the figure, a printing paper 1 is sandwiched between a platen roller 2 and a pinch roller 3 as shown in FIG. 2, and is pressed against the platen roller 3 by a pressure device (not shown). The platen roller 3 is connected to a rotational drive device (not shown), and drives the paper 1 in one direction in response to a paper feed signal. Reference numeral 4 denotes a head unit, which is driven back and forth by a drive mechanism (not shown) in a direction substantially perpendicular to the paper drive direction in response to a head drive signal. Reference numeral 5 denotes a thermal head, in which heating elements of, for example, 2411i1 are arranged in the paper driving direction and are fixed to the head unit 4 so as to face the printing paper 1 with a gap of, for example, about 0.2 mm. Reference numeral 6 denotes a porous film having a length longer than that of the protin roller 2. One side of the film is in contact with a heating element by a thermal head 5, and one end is connected to a winding and feeding roller ruff for winding. The winding and feeding roller 7 is connected to a drive device for rewinding the film 6 or applying back tension to the film 6 in response to a head drive signal. Reference numeral 8 denotes an ink unit, which is constructed within the ink unit 8 between the thermal head 5 and the winding roller rough. One of the four color ink supply cartridges 9 of Y (yellow), 1M (magenta), C (cyan), and Bl (blank) is connected to a drive device that selectively presses against the film 6 in response to a signal. As shown in FIG. 3, the ink supply cartridge 9 is composed of an ink supply core 9a and an ink 9b, and the ink supply core 9a sucks out the ink 9b and supplies the ink to the film 6. The other end of the film 6 is connected to a take-up roller 10 on the opposite side of the winding roller ruff. The film 6 is immersed by a washer roller 11 between the take-up roller 10 and the thermal head 5 in a volatile cleaning liquid filled in a washer tank 12 located substantially below the take-up roller 10. . A shutter 13 is connected to a drive device (not shown) for opening and closing between the thermal head 5 and the printing paper 1 in response to a head drive signal. The take-up roller 10 is connected to a drive device (not shown) for winding the film 6 in response to a head drive signal. The head unit 4 is composed of the above-mentioned 5 to 13 parts and their driving devices.

Next, the operation will be explained. First, in the initial state before printing, the head unit 4 is located at the left end of the platen roller 2, and the entire film 6 is wound around the winding roller ruff. Next, when a Y (yellow) print signal is given, Y
The (yellow) ink supply cartridge is pressed against the film 6, the shutter 13 is opened, and the head unit 4 begins to move to the right. The winding opening roller 10 winds the film 6 in synchronization with this movement so that the relative speed between the film 6 and the printing paper 1 becomes approximately zero.

The winding and feeding roller 7 applies a certain amount of back tension to the film 6. The holes of the film 6 drawn out from the winding roller 7 are filled with yellow ink by a Y (yellow) ink supply cartridge, and heated on the thermal head 5 to print Y (yellow) on the printing paper 1.

After printing, the film 6 is cleaned of remaining ink and dust with a volatile cleaning liquid in a washer tank 12, and then wound around a winding roller 10. Y (yellow)
When one line of printing is completed and the head unit 4 comes to the right end of the platen roller 2, the ink supply cartridge 9 separates from the film 6 and the head unit 4 stops. Next, the shutter 13 is closed and the head unit 4 begins to move to the left. As before, the film 6 is unwound on the winding roller ruff in synchronization with this movement. At this time, the film 6 pulled out from the take-up roller 10 is washed once again and comes to the thermal head 5 with the washing liquid still attached. The attached cleaning liquid cleans the thermal head 5, and since the cleaning liquid is volatile, it evaporates due to the heat of the thermal head 1. Here, the liquid that is in the holes of the film 6 and jumps out before it evaporates is blocked by the shutter 13 and does not stain the printing paper 1. The film 6 that has been washed and dried in this manner is wound up by a roller feed roller, and when the head unit 4 returns to the left end, the Y (yellow) printing process is completed.

Next, by pressing the M (magenta) ink supply cartridge 9 against the film 6 and repeating the above steps, M (magenta) printing can be performed, followed by C (cyan) printing and Bj'.
When (blank) printing is performed, one line of color printing is completed, the paper 1 is driven by one line, and the next line is printed.

〔effect〕

As described above, the present invention can perform color printing with one head and film, there is no color shift between each color, there is no need to worry about color mixing of inks, and it is suitable for cost reduction.Furthermore, cleaning can reduce dust and ink solidification. This has the advantage of being able to provide a stable recording device that does not have to worry about clogging.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a main part showing an embodiment of the invention, FIG. 2 is a sectional view of a main part showing an embodiment of the invention, and FIG. 3 is a sectional view of parts showing an embodiment of the invention. 1... Print paper 2... Platen roller 3... Pinch roller 4°9' Head unit 5... Thermal head 6... Film 7... Winding roller 8... Ink unit 9...・Ink supply cartridge 10...Take-up roller 11...Washer roller 12...Washer tank 13...Shutter and above Applicant Seiko Electronics Co., Ltd. Engraving of drawings (no change in content 1 Written amendment of procedure (method) ) 1. Indication of the case 1985 Patent Application No. 245969 2. Invention title entry device λ Person making the amendment

Claims (1)

[Scope of Claims] (a) a device for driving printing paper in one direction; (b) a thermal head having heating elements arranged in the driving direction of the paper; and (c) a device in contact with the thermal head on one side. (d) a winding roller around which one end of the film is connected and wound; (e) at least one ink supply cartridge; (f) the thermal head; a drive device for pressing the ink supply cartridge against the film between the winding and feeding rollers; (g) a winding roller to which the film is connected on the opposite side of the winding and feeding roller; (h) ) a drive device that rotates the winding and feeding roller;
) a drive device for rotating the take-up roller; (j) a washer tank filled with a volatile cleaning liquid disposed substantially below the take-up roller; and (k) a pivot support for drawing the film into the washer tank. and a device for driving a head unit comprising a washer roller and a washer roller in a direction substantially perpendicular to the direction in which the paper is driven.