CN1373043A

CN1373043A - Chip structure of multi-color inkjet head

Info

Publication number: CN1373043A
Application number: CN 01109057
Authority: CN
Inventors: 张智超; 邱庆龙; 苏士豪
Original assignee: Industrial Technology Research Institute ITRI
Current assignee: Industrial Technology Research Institute ITRI
Priority date: 2001-02-28
Filing date: 2001-02-28
Publication date: 2002-10-09
Anticipated expiration: 2021-02-28
Also published as: CN1143776C

Abstract

A chip structure of ink gun with multiple color gradation is prepared as connecting premixing chamber to different ink storage chambers through multiple color matching ink supply elements, controlling quantity of different inks to be sprayed into premixing chamber by color matching ink-jet element, obtaining an ink reaching desired color gradation in premixing chamber, spraying ink premixed to desired color gradation to recording medium (paper or the like) by printing ink-jet driver set at outlet of premixing chamber.

Description

Chip structure for multi-chromatic-level ink-jet head

The present invention relates to a kind of structure of ink gun wafer, particularly a kind ofly be used in polychrome rank inkjet technology, and have the chip structure for multi-chromatic-level ink-jet head of higher inkjet printing speed.

After polychrome rank inkjet technology is succeeded in developing, provide tone abundant print quality, make the print quality of image greatly promote.And present technological development direction except hope is having abundanter color range aspect the colour print, improves outside the resolution ratio of printing, and how obtaining faster, inkjet printing speed also is another important target.

Known ink-jet printer is in order to improve print quality, generally the method for Cai Yonging for example lowers the size of ink drop size, to improve the resolution ratio of printing, control by ink droplet number of all kinds cooperates the halftoning control technology then, provide abundant color range, so that make colour print (the particularly printing of chromatic image) obtain higher print quality.So the ink droplet quantity of being known as has been arranged at present on the market less than 1 picoliter (pl), has also had resolution ratio to occur up to the ink-jet printer of 2400dpi (dot per inch).Yet with regard to general high-quality printed matter, the resolution ratio of 600dpi is just more than sufficient, though its ink droplet quantity reaches more than tens of picoliters, such resolution ratio has been difficult to the naked eye tell therebetween evident difference.Further analyze, why high-quality ink-jet printer now will adopt the ink-jetting style of denier, one of main purpose is to increase the variation of color range, but too small ink droplet also causes the microminiaturization of ink droplet squit hole, and the chance of its obstruction also increases greatly.

Though, known ink-jet printer has had the ability to make the ink droplet traceization of ejection at present, but it carries out the mode that print on colored polychrome rank, remain the ink that uses multiple color, the ink of different colours is injected into recording medium (as common paper, special-purpose Alhue paper or other fellows), and finish the colour mixture of the ink of different colours on the surface of recording medium, so ink of different colours, must successively carry out injection for several times at the same area, emitted dose by control different colours ink, so that after its colour mixture, obtain the color range of expectation, even increase the effect that color range changes so can reach by the traceization of ink drop size, but still can't improve ink-jet printer when carrying out the printing of colored polychrome rank, the problem that print speed is low excessively.

Main purpose of the present invention will provide a kind of ink gun chip architecture that can increase colored polychrome rank inkjet printing speed exactly.

Above-mentioned purpose of the present invention is achieved in that a kind of chip structure for multi-chromatic-level ink-jet head, mainly be that design has a premixer in the ink gun wafer, different ink will be separately spurted into premixer's colour mixture of going ahead of the rest by a color matching ink supply element, by respectively the match colors mode of energy of ink supply element of control, according to final printing color range, make it respectively to spray a quantity of ink of expecting and enter the premixer, and then by the printing ink jetting actuators that is equipped on the exit, premixer, the ink that premix is reached the expectation color range is injected into recording medium, the structural design of this ink gun wafer, only need a colour mixture action to add that one is injected into the action of recording medium with ink, just can finish be same as in the conventional art will many ink droplets of all kinds (monochrome is multistage promptly need 8 even reach 16 ink droplet) priority be injected into the printing effect of recording medium; By contrast, design of the present invention can improve the print speed of conventional art significantly.

In preferred embodiment disclosed in this invention, can take the ink of different colours is injected into the mode of colour mixture in the premixer, obtain the ink of expectation color range; And another preferable enforcement aspect, then be with the pigment of high concentration and solvent according to the requirement of color range, in the premixer, be pre-mixed and be diluted to required color range, and then the ink ejection is printed by printing ink-jetting member.Compare with the printing type that obtains the expectation color range by ink droplet jet to the number of ink droplets of recording medium of control different colours with conventional art, the present invention is before being injected into recording medium with ink, just ink control is reached the color range of expectation, can reduce the injecting times of ink droplet equally, reach the effect that improves print speed.

Below in conjunction with embodiment and accompanying drawing thereof, technology contents of the present invention is described in further detail.

Fig. 1 is the functional-block diagram of each structure of ink gun wafer;

Fig. 2 is first kind of embodiment of ink gun wafer, shows each arrangements of components position of inkjet printing unit:

Fig. 3 shows among first kind of embodiment, the annexation in ink chamber and the ink gun wafer between each inkjet printing unit;

Fig. 4 A is second kind of embodiment of ink gun wafer, shows each element of inkjet printing unit and the configuration of ink chamber;

Fig. 4 B is the local structure enlarged drawing of Fig. 4 A, shows the shape and the configuration relation of each element of inkjet printing unit;

Fig. 5 is the another kind of embodiment structure of Fig. 4 ink inside apotheca.

At first please refer to Fig. 1, it is the functional-block diagram of ink gun wafer 1 and related elements thereof.Ink gun wafer 1 communicates with the ink chamber that several store different inks, prints required mass colour and is supplied with by each ink chamber, then the energy of giving by ink gun wafer 1 and be injected into recording medium.Because most color inkjet printer all uses C (Cyan, cyan), M (Magenta, fuchsin) and Y (Yellow, yellow) etc. the ink of three kinds of different colours, so hereinafter in the disclosed embodiments, will be storing the first ink chamber 20a of C, M, three kinds of different colours inks of Y respectively, the second ink chamber 20b, and the 3rd ink chamber 20c is that example is further described.

The designed ink gun wafer 1 of the present invention includes a plurality of inkjet printing unit 10 of arranging (normally adopting matrix-style to arrange) according to specific mode, each inkjet printing unit 10 all has an ink jet exit (not shown), just look like to be the appearance that is arranged in ink gun wafer 1 as a plurality of tiny pin holes in view of appearance, and by

several ink chambers

20a, 20b, 20c institute ink supplied is earlier after colour mixture is finished in the inside of inkjet printing unit 10, be injected into the surface of recording medium again by these ink jet exits, and reach the effect of colored polychrome rank inkjet printing.

In first kind of embodiment disclosed in this invention, the structure of each inkjet printing unit 10 is all identical, and it includes (see figure 2):

One premixer 30 has an ink jet exit 31, the ink that can finish for colour mixture by and be injected into the surface of recording medium;

Several color matching ink supply elements, be respectively: the first color matching ink supply element 40a that is communicated with the premixer 30 and the first ink chamber 20a, the second color matching ink supply element 40b that is communicated with the premixer 30 and the second ink chamber 20b, the 3rd color matching ink supply element 40c of connection premixer 30 and the 3rd ink chamber 20c;

Several color matching ink supply drivers, it is respectively: the first color matching ink supply driver 50a that is arranged at the first color matching ink supply element 40a, be arranged at the second color matching ink supply driver 50b of the second color matching ink supply element 40b, be arranged at the 3rd color matching ink supply driver 50c of the 3rd color matching ink supply element 40c, by ink supply driver 50a that matches colors to these several, 50b, the energy control of 50c, and will come from different color matching

ink supply element

40a, 40b, different colours ink among the 40c is spurted into premixer 30 according to the quantity of ink of expection and is finished colour mixture, so that obtain the ink of expectation color range; And

One prints ink jetting actuators 60, is arranged at premixer 30, in order to will finish colour mixture and to reach the ink of expecting color range is injected into recording medium via ink jet exit 31 surface.

Aforesaid three color matching

ink supply driver

50a, 50b, 50c and printing ink jetting actuators 60 can be realized with the mode of heated type resistance film, just as the operation principle of traditional Thermal Bubble Ink-jet Printer head wafer, we can pass through the means of the energy of control heated type resistance film, by heated type resistance film heating ink droplet, make it instant vaporization and expand then that required quantity of ink is spouting.So ink chamber 20a from three different colours, 20b, the ink of 20c, at first will within premixer 30, mix the color range that reaches expectation, and then once be injected into recording medium (as common paper, inkjet printing dedicated paper or other fellow), can obtain the printing effect of expectation color range on the surface of recording medium, do not resemble conventional art and the ink droplet of different quantity of ink different colours successively need be injected into for several times recording medium, so design of the present invention can be shortened the time of printing, improve the speed of printing relatively, and can have identical print quality.

Aforementioned three color matching

ink supply element

40a, 40b, the equipping position of 40c, be centered around around the premixer 30, they are respectively by first flow 41a, the second runner 41b, and the 3rd runner 41c be connected with premixer 30, and these three

runner

41a, 41b, 41c introduces ink the location point of premixer 30, be the position that is distributed in the center that is symmetrical in premixer 30 haply, then better if the center with premixer 30 of being distributed in is the circumference in equal parts position in the center of circle, like this can so that the ink of different colours respectively by three color matching

ink supply element

40a, 40b, 40c spurts into after the premixer 30, can mix equably each other, if the ink of three kinds of different colours is spurted into cause after the premixer 30 as the melange effect as the whirlpool, to more help the colour mixture action of ink by sufficient stirring, and obtain more uniform colour mixture result.

Please refer to Fig. 3 again, as can be seen from Figure, store the ink chamber 20a of the ink of three kinds of different colours, 20b, the annexation in 20c and the ink gun wafer 1 between several inkjet printing unit 10, three

ink chamber

20a, 20b, 20c all are arranged on the same side (and at the dorsal part with respect to ink jet exit 31) of ink gun wafer 1,

different ink chamber

20a, 20b, 20c can be respectively by with the surperficial parallel or vertical color matching ink supply runner 21a of

ink gun wafer

1,21b, 21c, with three color matching

ink supply element

40a, 40b, 40c connects, so can be without a doubt with three color matchings of required providing ink

ink supply element

40a, 40b, 40c.

Shown in Fig. 4 A, in another embodiment of the present invention, we have stored the high concentration pigment of different colours and the solvent of coupling respectively in different ink chambers, and its equivalent structure is shown in Fig. 4 A, by suitable arrangement, the ink chamber 20a of high concentration pigment is being housed, 20b, the solvent storage chamber 70a of 20c and collocation thereof, 70b, between the 70c, can be provided with one or several inkjet printing unit 10a, the structure of these inkjet printing unit 10a includes:

One prints ink jetting actuators 60, is arranged at premixer 30, in order to will finish colour mixture and to reach the ink of expecting color range is injected into recording medium via ink jet exit 31 surface;

Two color matching

ink supply element

40d, 40e, one of them color matching ink supply element 40d is communicated with premixer 30 and adjacent ink chamber (20a or 20b or 20c), and another color matching ink supply element 40e then is communicated with premixer 30 and adjacent solvent storage chamber (70a or 70b or 70c); And

Two are arranged at color matching ink supply element 40d, the color matching ink supply driver 50d among the 40e, 50e respectively.

In above-mentioned this embodiment, in order to make the solvent that enters the premixer mix equably with high concentration pigment, we are for respectively in order to connect two color matching ink supply element 40d, the 4th runner 41d of 40e and premixer 30, done special arrangement with the position of the 5th runner 41e, shown in Fig. 4 B, the 4th runner 41d and the 5th runner 41e be with solvent or high concentration pigment from the premixer 30 margin guide go into premixer 30, by the injected impulse force of going into premixer 30 of solvent or high concentration pigment, and cause field of flow as the whirlpool in the inside of premixer 30, can make solvent and high concentration pigment obtain preferable mixed effect.

Aforesaid two color matching

ink supply driver

50d, 50e and printing ink jetting actuators 60, can be realized with the mode of heated type resistance film equally, can pass through the means of the energy of control heated type resistance film, required high concentration pigment and ejection of solvent are gone into 30 mixing of same premixer, pigment is diluted to the color range of expectation, ink is injected into the surface of recording medium via ink jet exit 31 by printing ink jetting actuators 60 then.Have the color range that earlier the ink premix is reached expectation equally, once be injected into the effect of recording medium then.

And these store the high concentration pigment of different colours and the ink chamber 20a of solvent respectively, 20b, the solvent storage chamber 70a of 20c and collocation thereof, 70b, 70c, we can also be achieved by structure shown in Figure 5, wherein solvent is stored by the solvent storage chamber 70 of an area that is enough to contain whole ink gun wafer 1 at least, and store the ink chamber 20a of the high concentration pigment of different colours, 20b, 20c is then assigned into the central authorities of solvent storage chamber 70, and maintain a proper spacing each other, just any one

ink chamber

20a or 20b or 20c around all around solvent is arranged but directly do not communicate, and between any two high concentration pigment adjacent one another are and solvent, just dispose above-mentioned inkjet printing unit 10a, this design makes

different ink chamber

20a, 20b, the required solvent of 20c is supplied with by same solvent storage chamber 70, can arrange in pairs or groups the designed chip structure for multi-chromatic-level ink-jet head of the present invention easily equally and obtains to realize.

The multi-chromatic-level ink-jet head wafer that the present invention is designed, can use the ink of multiple color, with the ink of the different colours premix of going ahead of the rest, be injected into the surface of recording medium then, by the premix amount of control different colours ink, obtain the color range of expectation, premix reaches the expectation color range because ink has been gone ahead of the rest, therefore only need once to spray to reach required printing effect, also have the effect that improves print speed simultaneously.

The multi-chromatic-level ink-jet head wafer that the present invention is designed can be earlier mixes the ink that obtains the expectation color range with the pigment of high concentration with solvent in advance, is injected into the surface of recording medium then, has the effect that improves print speed equally.

Claims

1. A multi-color-level ink-jet head chip structure, used to eject inks of several different colors to the surface of the recording medium, which has at least one ink-jet printing unit consisting of the following elements:

A pre-mixing chamber has an ink ejection port, which can allow ink to pass through and eject to the surface of the recording medium;

Several color-matching ink supply elements connect several inks of different colors to the pre-mixing chamber;

Several color-matching ink supply drivers are respectively arranged in the color-matching ink supply element, and are used to inject inks of different colors into the pre-mixing chamber according to the expected amount of ink to mix colors, so as to obtain inks of desired color levels; and

A printing inkjet driver is arranged in the premixing chamber, and is used for ejecting the ink which has completed the color mixing and reached the desired color level to the surface of the recording medium through the ink ejection port.

2. The chip structure of a multi-color inkjet head as claimed in claim 1, wherein the plurality of color-matching ink supply elements are respectively connected to the pre-mixing chamber through a plurality of flow channels.

3. The chip structure of the multi-color-level inkjet head as claimed in claim 2, wherein the positions where the plurality of flow channels introduce the ink into the pre-mixing chamber are distributed symmetrically to the center of the pre-mixing chamber.

4. The chip structure of a multi-color-level inkjet head as claimed in claim 2, wherein the points where the ink is introduced into the premix chamber by the plurality of flow channels are distributed in equal parts with the center of the premix chamber as the center of the circle. Circumferential position.

5. The multi-color inkjet head chip structure as claimed in claim 1, wherein the plurality of color-matching ink supply elements surround the pre-mixing chamber.

6. The multi-color inkjet head chip structure as claimed in claim 1, wherein the inkjet head chip also has several color matching ink supply channels parallel or perpendicular to the surface of the inkjet head chip, which are used to communicate with each other respectively. The color-matched ink supply element works with several different colored inks.

7. The multi-color-level inkjet head chip structure as claimed in claim 1, wherein the plurality of matching ink supply drivers and the printing inkjet driver are a heated resistive thin film structure.

8. The multi-color scale inkjet head chip structure as claimed in claim 1, wherein the plurality of color-matched ink supply drivers further comprise a means of controlling their energy to eject a required amount of ink into the pre-mixing chamber.

9. A chip structure of a multi-color-level inkjet head, used to spray high-concentration pigments with colors and their solvents to the surface of the recording medium, which has at least one inkjet printing unit composed of the following elements:

a pre-mixing chamber having an ink ejection port for ink to pass through and be ejected onto the surface of the recording medium;

Two color-matched ink supply elements respectively connect high-concentration pigments and solvents to the pre-mixing chamber;

Two color-matching ink supply drivers are respectively arranged in the aforementioned two color-matching ink supply elements, and are used to spray high-concentration pigments and solvents into the pre-mixing chamber according to the expected injection volume to mix colors to obtain the desired color scale. ink; and

A printing inkjet driver is arranged in the premixing chamber, and is used for jetting the ink which has completed the color mixing and reached the desired color level to the surface of the recording medium through the ink outlet.

10. The multi-color scale inkjet head chip structure as claimed in claim 9, wherein the color matching ink supply element is located around the premixing chamber.

11. The chip structure of multi-color-level inkjet head as claimed in claim 9, wherein the color-matched ink supply elements are respectively connected to the pre-mixing chamber through several flow channels.

12. The multi-color inkjet head chip structure as claimed in claim 11, wherein the plurality of flow channels guide the solvent or the high-concentration pigment into the pre-mixing chamber from the edge of the pre-mixing chamber, so that the solvent or the high-concentration pigment Pigments are injected into the premix chamber creating a swirl-like flow field.

13. The chip structure of the multi-color inkjet head as claimed in claim 9, wherein the color matching ink supply driver and the printing inkjet driver are a heated resistive thin film structure.

14. The multi-color scale inkjet head chip structure as claimed in claim 9, wherein the color matching ink supply driver further includes means for controlling its power to eject a required amount of ink into the premixing chamber.