JPS61189945A - Recording apparatus - Google Patents

Abstract

PURPOSE:To prevent the clogging of a nozzle, by using a film wherein a resistor layer is laminated to the under surface of a film layer having a large number of apertures or recessed parts. CONSTITUTION:A film layer 1 is a thin metal film comprising aluminum or an org. film having high heat resistance comprising polyimide and has a large number of apertures 2. When the film 5 consisting the film layer 1, a metal layer 3 and a resistor layer 4 passes through an ink supply part 11, the apertures 2 are filled with ink and the filled ink 8 is carried to the position opposed to a needle electrode head 16 and bubbles are generated in the needle electrode head 16 by the supply of a current to each 17 by the application voltage to the needle electrode head 16 and the ink 8 is injected to recording paper 12 from the apertures 2 functioning as nozzles by the pressure of the bubbles to perform recording. Because the apertures 2 are used as the nozzles of ink jet as mentioned above, the clogging of the nozzles can be perfectly eliminated.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a non-impact ball distribution device, and particularly relates to an inkjet recording device [Technical Background of the Invention and Problems thereof] Conventionally, an impact method has been used as a recording method. Various methods have been proposed, ranging from non-impact methods to non-impact methods. Non-impact methods, which are less noisy than impact methods, include electrophotographic methods, electrostatic methods, thermal methods, and inkjet methods. They are quiet even in the wild, have low power, are easy to downsize, and can be easily converted to color. Moreover, the inkjet method has many advantages such as low cost of components, making it a very popular recording method. In general, inkjet systems eject liquid ink through nozzles with minute holes. clogging occurred, resulting in significant deterioration of recording characteristics and decreased reliability of the device.

As a countermeasure to this problem, various improvements have been made, such as slow-drying ink, and the nozzle shape, such as the addition of a nozzle cleaning mechanism. What can be achieved is not realized.

[Purpose of the invention]

The present invention was made based on the above-mentioned circumstances, and an object of the present invention is to provide a recording device that does not require consideration of nozzle clogging.

[Summary of the invention]

In order to achieve the above object, the present invention uses a film in which a resistive layer is laminated under a film layer having a plurality of holes or recesses, impregnates the holes or recesses of this film with ink, and A needle electrode head is arranged in a dense layer on the resistance layer.

By selectively driving this needle electrode head and heating the resistive layer with electricity, the ink applied to the holes or recesses of the film was heated and jetted to print.

[Embodiments of the invention]

Hereinafter, the present invention will be explained with reference to an illustrated embodiment. Figures 8g2 (ta) and (b) are a sectional view and a front view of a film (carrier) applied to an embodiment of the present invention. The film layer (first layer) 1 is a wide metal film such as A1 or a highly heat-resistant organic film such as polyimide, and has a plurality of pores 2. The diameter of the pores 2 is 10 to 200 μm.
That's about it. Below this film layer 1, there is a film layer 1
A metal layer 3 made of aluminum or the like is laminated to prevent ink from penetrating through the holes 2, and further below that is a resistance layer (second layer) 4 made of carbon and resin to generate heat when electricity is applied.
are laminated to form a film (carrier) 5.

3(a), (b), and (C) are explanatory diagrams showing the basic principle of the present invention. The holes 2 of the film layer 1 are filled with ink by an ink supply unit (not shown), and the film 5 is moved. This hole 2 is sent to the position corresponding to the needle electrode head 6. At this time, a current flows from the needle electrode head 6 to the ground 7 through the resistor r@4 as shown by the arrow shown in FIG. The resistive layer 4 is heated rapidly, and as shown in FIG.
As shown in b), bubbles 9 are generated at the interface between the metal layer 3 and the ink 8, and the pressure of the bubbles 9 causes all or part of the ink 8 to be ejected as shown in FIG. 3(C). The amount of ejected ink is adjusted by changing the amount of current flowing through the resistance layer 4. The needle electrode head 6 and the film 5 are in complete contact with each other, and the generated bubble 9 expands only on the force side of the opening of the hole 2 in the film layer 1. Therefore, the ink 8 is ejected with accurate directionality.

FIGS. 4(a) and 4(b) and FIG. 5(a)lb) are explanatory diagrams showing the positional relationship between the needle electrode head and the hole in the film. Figure 4 is for 6-11 needle electrode heads.

This is the case where there is one hole 2, and FIG. 5 shows the case where there is a plurality of holes 2 for each 21 needle electrode hendrows. The reliability of recording is high against the occurrence of clogging of holes in which a plurality of holes correspond to one needle electrode head, which serves as a nozzle. In addition, there is no need to create a mechanism that takes into account the correspondence between the positions of the needle electrode head and the nozzle hole.In other words, one of the multiple holes will always be in the position corresponding to the needle electrode head, so recording due to timing errors will be avoided. Figure 1 is an explanatory diagram of a monochrome line printer that is an embodiment of the present invention.The film layer l is made of a thin metal film such as aluminum or a heat-resistant organic film such as polyimide. It is an endless film with a wide range of recording sizes, such as A4 and A3, and has a plurality of holes 2. The diameter of the hole 2 is related to the thickness of the film, and when the film thickness is about 50 μm, the maximum diameter of the hole is about 50 μm. This film layer 1. Film 5#-i consisting of metal layer 3° and resistance layer 4 Roller 10-1.10 for maintaining the film
-2, it rotates in the direction of the arrow. When the holes 2 of the film layer 1 pass through the ink supply section 11, the holes 2 are filled with ink. This filled ink 8 is carried to a position corresponding to the needle electrode head 16 as the film 50 rotates, and a puzzle is generated in the needle electrode head 16 by applying voltage to the needle electrode head 16 and energizing the ground 17. Then, the 0 needle electrode head 16, which uses the pressure as a nozzle to eject ink 8Fi onto the recording paper 12 for recording, houses a drive circuit for driving the needle electrode heads for the dots in the line force direction. This simplifies the multi-circuit structure. The recording paper (recording material) 12 is
With platen 13.

The zero blade 15, which is supported by rows 214-1 and 14-2 for preventing paper scratches and faces the hole 2 which also serves as a nozzle, scrapes off unnecessary ink that has adhered to the film 5 after passing through the ink supply section 11. . In the monochrome line printer configured in this way, recording is performed at selected needle electrode heads of 16 rows of needle electrode heads formed in the line direction.
This is done in accordance with the dot pattern by applying EE.

FIG. 6 is an explanatory diagram of a line printer for color recording, which is another embodiment of the present invention.The basic configuration is the same as that of the monochrome line printer shown in FIG. A certain o65yt61)' is a film and ink supply unit for Y color (yellow), 65m and 61m are a film and ink supply unit for M color (magenta), 65c and 61c.
td, a film and ink supply section for C color (cyan); 65 blk, 6l blk are film and ink supply sections when BLK color (black) is used as one of the primary colors. 66Y, 66m, 66e, 66b
lk is a needle electrode head portion consisting of a needle electrode head, a ground, and a drive circuit, and is provided facing the platen 13 which plays the role of running and maintaining the recording paper 120. At the same time as the recording paper 120 runs, Y 1M color, 0
color.

BLK colored needle electrode head parts 66y, 66m, 66C, 6
When recording in 6 blk using a dot pattern, multi-color or full-color display can be achieved using a halftone dot method or an overlapping method.

FIG. 7 is an explanatory diagram of a color serial printer which is another embodiment of the present invention. The basic configuration is the same as the monochrome line printer shown in FIG. 1, and examples for each primary color are provided as in FIG. 6.
75c a 75 b lk is Y color, 0M color, 0 color,
It is a film for BLK color, 76y, 76m, 76c
, 76blk are rows of needle electrode heads for each primary color, and a sponge roller 70y has a plurality of needle electrode heads formed perpendicular to or close to one longitudinal direction of each film.

70m, 70c, 70 blk is the ink supply section 717
．． 71m, 71c, 71bJkK, suck up the ink and use these sponge rollers 70y, 70m, 70c
, a film 7sy passing in contact with the surface of 70blk
, 75tn, 75c, and 75blk are filled with ink. and needle electrode heads 76y, 76m, 76c, 7
Serial printing can be performed by moving 6blk in the width direction of the recording paper 12 while taking recording typing into consideration.

In this way, the present invention can be configured as a monochrome line printer, a color line printer, or a color serial printer.In addition, in the above embodiments, the holes in the film are as shown in FIG.
Although the shape is parallel as shown in a), the shape shown in FIG. 8 may also be used. Figure 8 ta) and (b) are tapered holes;
fc), (d) is a recessed portion, and (e) is a parallel recessed portion. The density of the holes or recesses in the film can be appropriately determined depending on the density to be recorded and the density of the needle electrode head. Since these holes or recesses are used as inkjet nozzles, nozzle clogging can be completely eliminated. Furthermore, since multiple holes or recesses are formed in the film, the recording density can be much higher than that of conventional inkjet systems.

Furthermore, since the pressure of the bubbles is used, the ink ejection force is greater than that of conventional piezoelectric elements such as Donizo, and the recording speed is also increased.

Furthermore, since a needle electrode head is used, power consumption is low, and the head itself is small, making it suitable for miniaturization.

In this embodiment, the film is constructed in an endless manner, but the same effect can be obtained even if the film is constructed in a reciprocating manner. Also, film.

The same effect can be obtained when the ink supply section and the like are constructed in a detachable cassette type.

[Effects of the Invention] As explained above, according to the present invention, nozzle clogging does not occur in an inkjet recording apparatus.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of a monochrome line printer which is an embodiment of the present invention, Fig. 2 (a) and fb) are an @ side view and a front view of a film applied to an embodiment of the present invention; FIGS. 3(a), (b), and (c) are explanatory diagrams showing the basic principle of the present invention; FIGS. 4(a), (b), and FIG. 5(a). fb) is an explanatory diagram showing the positional relationship between the holes in the film and the needle electrode head applied to one embodiment of the present invention, and FIG. 6 is an explanatory diagram of a color line printer which is another embodiment of the present invention. FIG. 7 is an explanatory diagram of a color serial printer which is another embodiment of the present invention, and FIG. 8 is a sectional view of holes or recesses formed in a film applied to one embodiment of the present invention. ... Film layer (first layer), 2... One hole (hole or recess), 4... Resistance layer (second layer), 5... Film (carrier), 8... Ink, 10 -1.10-2...
Roller (moving mechanism), 11... Ink supply section, 12.
...Recording paper (recording material), 13...Graden (inclusion mechanism), 14-1.14-2...Roller (inclusion mechanism)
, 16...needle electrode head (needle electrode head, drive circuit)
. Number of patent attorneys: Kensuke Norichika (and one other person) Figure 1 Figure 2 Figure C (1) (b) Figure 3 (a) Cb) ((:') Figure 4 Figure 5

Claims (7)

[Claims] (1) A carrier comprising a first layer having a plurality of holes or recesses and a second layer having a resistance layer laminated on the first layer; a moving mechanism for moving the carrier; and pores in the carrier. or an ink supply unit that supplies ink to the recessed portion; a needle electrode head disposed opposite to the first layer of the carrier; a drive circuit that selectively drives the needle electrode head; and a drive circuit that selectively drives the needle electrode head; What is claimed is: 1. A recording device comprising: a recording material feeding mechanism provided opposite to the first layer; (2) The recording device according to claim 1, wherein each needle electrode head is provided corresponding to each hole or recess of the carrier. (3) The recording device according to claim 1, wherein each needle electrode head is provided corresponding to a plurality of holes or recesses of the carrier. (4) A line printer is provided in which a plurality of the needle electrode heads are formed in the width direction of the recording paper, and the width of the carrier is the same as the width of the recording paper. Recording device. (5) A serial printer is provided in which a plurality of the needle electrode heads are formed in the traveling direction of the recording paper, and the moving direction of the carrier is perpendicular to the arrangement of the needle electrode heads. The recording device according to item 1. (6) Recording elements such as the carrier, the carrier moving mechanism, the ink supply section, and the needle electrode head are arranged in Y (yellow) color.
2. The recording apparatus according to claim 1, which forms four colors including three primary colors, M (magenta), and C (cyan), or BLK (black), and is used as a color printer. (7) The recording device according to claim 1, wherein the cross-sectional shape of the hole or recess of the carrier is tapered or parallel.