JP3302177B2 - Ink jet recording method and recording apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for fixing ink jet recording in which ink droplets are adhered and fixed on a recording medium to form characters and images, and an ink jet recording apparatus using the method.

[0002] Furthermore, the present invention relates to a color ink jet recording method capable of recording a color image at a clear and high density, and more specifically, to a yellow (Y), magenta (M),
The present invention relates to a fixing method of a color ink jet recording apparatus using color inks such as cyan (C) or green (G), red (R), blue (B), and black (Bk) ink.

[0003] The present invention relates to paper, cloth, nonwoven fabric, and OHP.
The present invention can be applied to all devices using a recording medium such as paper, and specific devices include a printer, a copier, a facsimile, and the like.

[0004]

2. Description of the Related Art Ink jet recording of this kind is widely used in various devices such as printers, copiers and facsimile machines because of its features such as low noise, low operating cost, easy downsizing of the apparatus and easy colorization. Have been. The color ink jet recording uses three color inks of cyan (C), magenta (M), and yellow (Y).
Color recording is performed using four color inks to which black (Bk) has been added.

In this type of conventional ink jet recording, it has been necessary to use a special paper having an ink absorbing layer in order to obtain a high-colored color image without ink bleeding. As a result, a method has been put to practical use in which recording aptitude for "plain paper" used in large quantities in printers and copiers is provided. However, at present, the recording quality on these “plain papers” remains at an extremely insufficient level. One of the reasons is that
Fixing of the ink attached to the recording medium.

For printing at a high density, it is necessary to increase the amount of ink adhering per unit area, and for high-speed recording, it is necessary to increase the amount of ink adhering per unit time. Both of these disadvantageous conditions for fixing the ink on the recording medium. There is a problem that the ink protrudes into the non-printing area or that the ink of the previous printing medium adheres to the edge or the rear surface of the next printing medium during continuous printing. Furthermore, in color inkjet recording,
Bleeding of the ink between the colors is likely to occur.

[0007]

Generally, when characters and images are recorded on a recording medium by this type of ink jet recording, a quick-drying ink having a high penetration rate into the recording medium is used. For this reason, the ink penetrates into the recording medium to lower the density, and the so-called "feathering phenomenon" that the ink slightly bleeds along the paper fibers around the recording image area is likely to occur. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned various problems in the prior art, and efficiently accelerates the fixing operation of ink on a recording medium so that ink can be recorded from a desired area to be recorded with ink. An object of the present invention is to minimize spread, increase the recording density of fixed ink, and enable high-quality recording without a feathering phenomenon.

Another object of the present invention is to improve the recording quality by increasing the recording density by attaching a larger amount of ink than before, and to improve the recording quality by recording another ink in an area where one ink is fixed. a, lies in preventing the recording of deterioration due to mixing of ink between among other ink to be recorded later, furthermore, eliminate wrinkles in the recording medium after recording, to improve the physical-grade recording medium It is in.

In order to achieve these objects, conventionally, a method of heating a platen on the rear surface at a recording position of this type of recording apparatus, a method of using a large heat radiation heater from the rear surface, and the like have been proposed. However, since these methods heat and fix the ink via a recording medium, the fixing efficiency is limited. Further, the thermal responsiveness of the fixing device is poor, and for example, a heating time of about 1 minute is required after recording.

On the other hand, Japanese Patent Application Laid-Open No. 55-107490 proposes a method in which ink is applied to a recording medium, and then the recording medium is sent to a metallic cylinder on which microwaves are concentrated and dried and fixed. However, according to this method, after the ink is recorded on the recording medium, the ink is dried after at least several hundred msec, and in some cases, several seconds. Since the ink spreads out and is dried after causing bleeding, it is not possible to obtain sharpness of the edge portion.Also, since the ink is dried after penetrating inside the recording medium, a sufficient density is obtained. Did not. Further, in the case of a plurality of inks, the ink is dried after bleeding occurs between the plurality of inks, so that a substantial effect of preventing bleeding was not obtained.

[0012]

Therefore, in the ink jet recording method and recording apparatus of the present invention, the object is achieved by the following method. (1) Ink droplets ejected from a first ejection port that ejects ink droplets of a first color and a second ejection port that ejects ink droplets of a second color are mounted on a carriage. In an ink jet recording apparatus for forming a recording image on a recording medium by attaching the recording medium to the recording medium, the first ejection port and the first ejection port ejected onto the recording medium along a moving direction of the carriage during a recording operation. Microwave irradiation means for accelerating fixation of color ink droplets and the second ejection port were arranged on the carriage in this order. (2) a first discharge port for discharging a first color ink droplet;
A second ejection port for ejecting a second color ink droplet; and an ink jet recording apparatus for forming a recording image on the recording medium by attaching the ink droplet ejected from the second ejection port to the recording medium. And the first ejected onto a recording medium.
A microwave irradiating means for promoting the fixing of the ink droplets of the first color and the second ejection port in this order;
The microwave irradiating unit irradiates the microwave onto the attachment area of the first color ink droplet onto the recording medium from the ejection port, and then discharges the second ejection port from the second ejection port to the attachment area. Two color ink droplets were attached. (3) Inkjet that forms an image by ejecting ink droplets of the second color by the second inkjet recording head on the ink of the first color ejected on the recording medium by the first inkjet recording head In the recording method,
After irradiating the area on the recording medium onto which the first color ink droplets have been ejected by the first inkjet recording head with microwaves that promote the fixation of the first color ink droplets, the area is irradiated onto the area. The recording image is formed by overlapping the ink droplets of the second color ejected from the first inkjet recording head. (4) A first ejection port for ejecting a first color ink droplet mounted on the carriage, a second ejection port for ejecting a second color ink droplet, and an ejection of a third ink droplet. And an ink jet recording apparatus that forms a recorded image on the recording medium by attaching ink droplets ejected from the third ejection port to the recording medium, along a moving direction of the carriage during a recording operation. A first discharge port, microwave irradiation means for promoting fixing of the ink droplets of the first color discharged onto the recording medium, the second discharge port, and the third discharge port; They were arranged in this order. (5) a first ejection port for ejecting ink droplets of a first color;
The respective ink droplets ejected from the second ejection openings for ejecting the ink droplets of the second color and the third ejection openings for ejecting the ink droplets of the third color adhere to the recording medium by In an ink jet recording apparatus for forming a recording image on a recording medium,
The first ejection port, microwave irradiation means for promoting fixing of the first color ink droplet ejected on the recording medium, the second ejection port, and the third ejection port in this order. After irradiating the microwave by the microwave irradiating means to the area where the first color ink droplet is attached to the recording medium from the first ejection port, the second ejection port is applied to the attachment area. The ink droplets of the second color ejected from the third ejection port and the ink droplets of the third color ejected from the third ejection port adhere to each other. (6) A second ink jet recording head applies a second color ink droplet to the first color ink ejected on the recording medium by the first ink jet recording head, In an ink jet recording method for forming an image by ejecting ink droplets of three colors in a superposed manner, an area on a recording medium where the ink droplets of the first color are ejected by the first ink jet recording head After irradiating the first color ink droplets with microwaves that promote the fixation of the first color ink droplets, the second color ink droplets discharged from the second inkjet recording head to the region and the third inkjet The recording image was formed by superimposing the ink droplets of the third color ejected from the recording head. (7) A first ejection port for ejecting a first color ink droplet mounted on the carriage, a second ejection port for ejecting a second color ink droplet, and a third color ink droplet. Third to discharge
In an ink jet recording apparatus for forming a recorded image on a recording medium by adhering ink droplets ejected from an ejection port to the recording medium, the first ejection is performed along a moving direction of the carriage during a recording operation. An outlet, first microwave irradiation means for facilitating fixing of the first color ink droplets discharged on the recording medium, the second discharge port, and the second color discharged on the recording medium The second microwave irradiation means for promoting the fixation of the ink droplets and the third ejection port are arranged on the carriage in this order. (8) a first ejection port for ejecting a first color ink droplet;
The respective ink droplets ejected from the second ejection openings for ejecting the ink droplets of the second color and the third ejection openings for ejecting the ink droplets of the third color adhere to the recording medium by In an ink jet recording apparatus for forming a recording image on a recording medium,
The first discharge port, first microwave irradiating means for promoting fixation of the ink droplets of the first color discharged to the recording medium, the second discharge port, and the A second microwave irradiating means for promoting the fixing of the ink droplet of the second color and the third ejection port are arranged in this order, and the first microwave is supplied to the recording medium from the first ejection port. After irradiating a microwave to the attached area of the color ink droplets with the first microwave irradiating means, the second microwave is applied to the attached area.
The ink droplets of the second color ejected from the ejection port are attached, and the attached area is irradiated with microwaves by the second microwave irradiation means. The ink droplets of the third color to be ejected are attached. (9) The second ink jet recording head applies second color ink droplets to the first color ink ejected on the recording medium by the first ink jet recording head, In an ink jet recording method for forming an image by ejecting ink droplets of a third color in a superposed manner, a recording medium on which the ink droplets of the first color have been ejected by the first inkjet recording head. After irradiating a region with a wave that promotes fixing of the first color ink droplet, the second color ink droplet discharged from the second inkjet recording head is discharged to the region, Further, after irradiating the region with a microwave for promoting the fixation of the ink droplet of the second color, the third region
The ink image of the third color ejected from the inkjet recording head of No. 1 is superposed to form a recorded image. (10) In any one of the above-described (1), (2), (4), and (5) ink jet recording apparatuses, the first color ink droplet is more than the second color ink droplet. The ink was considered to have a characteristic of slow permeability to the recording medium. (11) In the ink jet recording method according to any one of the above (3) and (6), the ink droplets of the first color have lower permeability to a recording medium than the ink droplets of the second color. It was Ru ink der characteristics. (12) In any one of the above-described (1), (2), (4), and (5) ink jet recording apparatuses, the ink droplets of the first color are larger than the ink droplets of the second color. It was determined that the ink had characteristics of poor fixability to a recording medium. (13) In the ink jet recording method according to any one of the above (3) and (6), the ink droplets of the first color have lower fixability to a recording medium than the ink droplets of the second color. It was determined that the ink had characteristics. (14) The above (1), (2), (4), (5),
In any one of (7), (8), (10) and (12), the microwave irradiation means is a waveguide for guiding microwaves generated by a magnetron to an irradiation area. (15) The above (3), (6), (9), (11), (1)
In any one of the ink-jet recording methods of 3), the microwave irradiating means is a waveguide for guiding microwaves generated by a magnetron to an irradiation area. (16) The above (1), (2), (4), (5),
In any one of (7), (8), (10), (12), and (14), each of the ink droplets is an electrothermal converter or an electromechanical converter. (17) The above (3), (6), (9), (11), (1)
In any one of the ink jet recording methods 3) and (15), each ink droplet is an electrothermal converter or an electromechanical converter.

[0013]

According to the method of the present invention described above, a waveguide is provided adjacent to the recording head for generating microwaves, for example, leading to a magnetron. As a fixing device having a structure having ink, at the time of printing, at least several tens of
Ink recorded within msec Irradiation of the microwave increases the stable recording density of the ink, prevents the occurrence of the "feathering" phenomenon, improves the recording quality, and improves the recording quality of other inks. Since there is no "bleeding" between them, the recording quality at the boundary is also improved.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on a plurality of embodiments. (Embodiment 1) FIG. 1 is a schematic perspective view of an ink jet recording apparatus according to a first embodiment of the present invention. . The recording medium 106 loaded in the recording apparatus is conveyed to the recording area of the recording head 102 by the feed roller 109. A metal platen 108 is provided below the recording medium 106 in the recording area. The carriage 101 is configured to be movable in a direction determined by the two guide shafts 104 and 105, and reciprocally scans a recording area. The carriage 101 is mounted with four color inks, a recording head 102 for ejecting these inks, and a small magnetron 103. The four color inks are black (Bk), cyan (C), magenta (M), and yellow (Y). 1
Reference numeral 07 denotes a switch and a display panel for displaying various recording mode settings and the status of the recording apparatus.

FIG. 2 is an enlarged sectional view showing a recording head mechanism near the carriage 101 of the ink jet recording apparatus of the present embodiment. The carriage 101 has a pair of pressing rollers 112, and the recording medium 1 with respect to the platen 108.
06 and fix it. Bk head and each Y, M, C
Between the heads, the magnetron 110 and the waveguide 1
There are eleven. Further, a rotating propeller 114 is disposed in the wave tube 111. This rotational power is provided by a motor 115 above the magnetron 103.

The microwave generated by the magnetron 103 is irregularly reflected by the propeller 114 and the wall of the waveguide 111 in the waveguide 111 and irradiates the microwave to the recording medium 106. The waveguide 111 and the platen 108 have the same potential, and the platen 108 also reflects microwaves. The distance D between the waveguide 111 and the platen 108 is adjusted to be about 1 mm. This interval D is necessary to reduce the leakage of the microwave to the outside of the recording device and to improve the efficiency.

The thickness of the recording medium 106 is usually 100 to 4
Further, since the recording medium 106 is pressed against the platen 108 by the pressing rollers 112, the ejection ports 102 of the recording head 102
“a” is disposed at a position slightly retracted from the distal end of the waveguide 111, and the ejection port 102 a does not come into contact with the recording medium 106.

When the carriage 101 moves in the direction of arrow A, first, Bk ink is recorded, and Bk ink is recorded by microwaves.
Fix the ink. Subsequently, C, M, and Y inks are respectively recorded. In this embodiment, the microwave is 2.45G.
At a frequency of Hz, 180 W of power was applied.

In particular, the Bk ink uses an ink that has less feathering but has worse fixability than the C, M, and Y inks. Normally, when Bk ink is recorded on paper used in a copying apparatus called "plain paper", the ink on the paper surface penetrates into the inside and is fixed in about 2 to 6 seconds. By the fixing means, the fixing time is within 20 msec, and the fixing is performed before the ink spreads on the surface of the recording medium 106.

Here, the discharge port of the Bk ink and the discharge port of the C ink are spaced by 1 inch, and 360 dots of ink droplets are recorded at a frequency of 10 kHz between them. in this case,
If the Bk ink is fixed within 360 msec, no bleeding occurs between the C, M, and Y inks. Therefore, 20 msec is a sufficient time for this. Further, the power of the magnetron for the Bk ink is selected so as to be as described above.

The term “fixing” as used herein does not mean that all the volatile components in the ink are volatilized outside the recording medium, but rather spreads from the area where the ink adheres during recording to a wider area on the surface of the recording medium 106. No state. Therefore, at least if the outline of the attached ink is dry,
It does not matter if the inside of the contour is not dry.

By irradiating the recording area of Bk ink with microwaves immediately after recording, the recording medium 1 of Bk ink is irradiated.
The fixing action at 06 is improved. As a result, the recording medium 1
In this manner, the fixing of the ink on the 06 is efficiently accelerated, the spread from a desired area to be recorded is minimized, and high-quality recording without feathering becomes possible. Further, since the permeation of the recorded ink into the recording medium 106 is reduced, the amount of dyes and pigments, which are the coloring components of the ink remaining on the surface of the recording medium, is increased, and the recording density can be increased. In addition, it was possible to attach a larger amount of ink than before by microwave irradiation, and it was possible to improve the recording quality by increasing the recording density.

Further, when another ink is recorded later in the area fixed by irradiation with microwaves, it is possible to prevent deterioration of recording due to mixing of ink with another ink to be recorded later. Was.

Here, the bleeding of the ink of Bk and each of C, M and Y is improved. By the way, each of the C, M, and Y inks is an ink having a characteristic of being fixed in about 10 msec without adding a fixing unit, and there is no bleeding of the ink between the C, M, and Y. In other words, when printing different inks in at least the same recording area in multi-color ink printing, it is possible to eliminate bleeding with ink recorded later by fixing the previously recorded ink by irradiation of microwaves. It has become possible.

Further, when the recording medium 106 is plain paper, wrinkles are formed due to ink penetration after printing, and the wrinkles do not return if they are gradually dried. Fixing by microwave irradiation eliminates this wrinkle, and the recording medium 1
06 physical quality can be improved.

Here, the propeller 114 is used for irregular reflection of microwaves, and also has a function of moving volatile components in the evaporated ink from the vicinity of the recording head 102 to other places. Generally, a microwave easily generates a standing wave in a waveguide 111 having a specific shape,
Although the portion on the recording medium 106 where the ink is also easily fixed and the portion where the ink is not easily fixed are likely to occur, the provision of the propeller 114
Further, the scanning of the recording medium 106 by the magnetron 103 makes the fixing of the recording medium 106 uniform.

FIG. 3 shows the discharge port 102 of the recording head 102.
It is a front view showing arrangement of a. The recording head corresponding to each color has an ejection port 1 for ejecting Bk, C, M, and Y inks.
02a, respectively.

The arrangement distance between the colors is 1 inch between Bk and C, 1/2 inch between C and M, and 1/2 inch between M and Y. Also,
The interval between the 128 ejection openings 102a for each color is about 7
0 μm. Each of the discharge ports 102a is provided with an ink liquid path communicating with the discharge port 102a, and a common liquid for supplying ink to these liquid paths is provided behind a portion where the ink liquid path is provided. A room is provided. Discharge port 1
In the ink liquid path corresponding to each of the ink discharge ports 02a, there is provided an electrothermal converter for generating thermal energy used for discharging ink droplets from these discharge ports 102a, and electrode wiring for supplying power thereto. ing. These electrothermal transducers and electrode wires are formed on a substrate made of silicon or the like by a film forming technique.

Further, a resin, a partition made of a glass material, a top plate and the like are laminated on the substrate to form the discharge port 1.
02a, an ink liquid path, and a common liquid chamber. Each ejection port 102 for each of Y, M, and C provided in the recording head 102
About 40 ng of ink is ejected from a, and about 80 ng of ink is ejected from the ejection port for Bk.

The components of each ink having the above-described characteristics are as follows.

1) YC. I. Direct Yellow 86 3 parts Diethylene glycol 10 parts Isopropyl alcohol 2 parts Urea 5 parts Acetylenol EH (Kawaken Chemical) 1 part Water balance 2) M C.I. I. Acid Red 289 3 parts Diethylene glycol 10 parts Isopropyl alcohol 2 parts Urea 5 parts Acetyleneol EH (Kawaken Chemical) 1 part Water balance 3) C C.I. I. Direct Blue 199 3 parts Diethylene glycol 10 parts Isopropyl alcohol 2 parts Urea 5 parts Acetyleneol EH (Kawaken Chemical) 1 part Water balance 4) Bk C.I. I. Direct Black 154 3 parts Diethylene glycol 10 parts Isopropyl alcohol 2 parts Urea 5 parts Water remainder As described above, for each of the C, M, and Y inks, acetylenol EH (Kawaken Chemical), a surfactant, is added to the Bk ink. This improves the permeability. As the adduct, other surfactants, alcohols, and the like are effective in addition to acetylenol EH.

Here, as the recording head 102, an example is shown in which an electrothermal conversion element is used for ink ejection, but the present invention is not limited to this. For example, a piezoelectric element which is an electrothermal conversion element is used. May be done. Further, other means may be used, and the invention is applicable to all ink ejection means that can achieve ink jet recording.

The microwave irradiation may be performed not only immediately after the recording in the recording operation but also at a timing not immediately after the recording, for example, immediately before the recording in the return of the carriage 101 or in the reciprocating recording. . This serves to dry especially the water in the recording medium 106 and improves the recording quality.

In this embodiment, the platen 10
Although 8 is a flat metal plate, it may be a net having a large number of holes of about 1 mm in diameter. Since the recording area of the recording head 102 can be kept flat and the air permeability can be improved, there is an advantage that the volatile component in the ink is easily diffused from the rear surface of the recording medium 106.

(Embodiment 2)
Although an example in which five magnetrons are used has been described, the present invention is not limited to this, and FIG. 4 shows an example in which five magnetrons are used as the second embodiment. Here, magnetrons 131 to 135 are arranged at both ends of Bk, Y, M, C and each recording head. When the carriage 101 moves in the direction A in FIG.
Record the ink and fix it with magnetron 132
Next, the C ink was recorded and fixed with a magnetron: 133. Next, the M ink was recorded, and the magnetron:
Fix at 134, then record Y ink and fix with magnetron: 135.

When the carriage 101 moves in the direction opposite to the direction A in the drawing, first, the Y ink is recorded and fixed by the magnetron: 134, then the M ink is recorded, and the magnetron: 133 Then, C ink is recorded and fixed with magnetron: 132, then Bk ink is recorded and magnetron: 1
Fix at 31.

As described above, since recording can be performed in both directions with respect to the main scanning direction, the recording speed is doubled as compared with the one-way recording. Further, the fixing characteristic of each of the C, M, and Y inks is Bk
An ink having the same characteristics as the ink may be used, that is, an ink to which a surfactant, alcohol, or the like is not added. this is,
This is effective for improving the color development characteristics of each of the C, M, and Y inks. When a surfactant, alcohol, or the like is added to each of the C, M, and Y inks, fixing properties are good, but there is a disadvantage that color developing properties are not good, and this point can be improved.

Although a case in which a plurality of magnetrons are shown is shown here, it is also possible to use a single magnetron and irradiate a plurality of regions with microwave irradiation by a waveguide structure. Absent.

(Embodiment 3) Multi-pass In the first embodiment, an example in which the entire printing area is printed by one main scan has been described. However, the present invention is not limited to this. FIG. 8 is an explanatory diagram showing a process of performing recording in a recording area of the recording medium 106 as a third embodiment.
3A illustrates a case where the entire print area is printed by one main scan of the print head 102, which is the case of the first embodiment.
(B) shows a case where the entire printing area is printed in two main scans, and １ ／ of the printing area is printed in the first main scan.
In the next main scan, the print head is moved by の of the print head width in the sub-scanning direction orthogonal to the main scan direction, and the remainder of the first main scan and の of the next print head width are calculated. Record. Record one after another in the same way as the lower rank. The numbers in the figure indicate the number of times of main scanning.

In the case of recording as shown in FIG. 4B, the amount of ink ejected in one main scan is の of that in FIG. Therefore, the power of the magnetron for fixing is also 1
/ 2 is sufficient. This is an advantage that the power supply unit of the recording apparatus can be downsized. Here, the case where one recording area is printed by two main scans has been described. However, the present invention is not limited to this, and two, four, five, or six times the same printing area is mainly used. When printing is performed in N (an integer of 2 or more) multi-passes in the scanning direction, there is an advantage that the fixing power can be reduced to 1 / N.

(Embodiment 4) Correspondence to Recording Medium In the first embodiment, the case where the recording medium 106 is particularly plain paper is shown. However, there are various recording media 106, for example, a transparency sheet. Then, there are many things that are harder to fix than plain paper. This can be dealt with by changing the power of the magnetron or changing the main scanning speed to change the microwave irradiation time according to the recording medium.

For example, in a transparency sheet having a long fixing time, the power is increased. Alternatively, the main scanning speed is reduced at the same power to increase the microwave irradiation time. In this way, by providing the optimum energy necessary for fixing according to the recording medium 106, it is possible to obtain an efficient and highest recording speed without using wasteful energy.

(Embodiment 5) Vertically Arranged Heads In each of the above embodiments, the case where the recording heads 102 are of a horizontally arranged type is shown, but the present invention is not limited to this, and FIG. Shows an example of a print head having vertically arranged discharge ports as a fifth embodiment. Each ejection port 102a of the recording head 102 is linearly arranged in a direction orthogonal to the main scanning direction. Also, the inks are arranged linearly for each ink.

At the time of the printing operation, first, the printing head 102 relatively scans with the printing medium 106 to print Bk ink. Next, the waveguide 111 communicating with the magnetron scans and fixes the Bk ink recording portion. Next, C ink is recorded, and M and Y inks are sequentially recorded. The present invention is also applicable to such a recording head 102 having vertically arranged ejection ports 102a.

[0045]

As described above, according to the present invention ,
It improves fixing effect in record medium, so that the fixing of the ink on the recording medium efficiently accelerated, desired to minimize the spread of the recording area, enables high-quality recording with no feathering phenomenon It became. Further, since the penetration of the recorded ink into the recording medium is reduced, the recording density can be increased.

Further, a larger amount of ink can be attached than before by microwave irradiation, and the recording quality can be improved by increasing the recording density. Furthermore, when a multi-color ink is used, the recording area of the ink of the first color is fixed by irradiating a microwave, and then, when another ink is recorded, the recording area is different from other inks to be recorded later. In addition to preventing the deterioration of recording by mixing the inks, fixing by microwave irradiation can eliminate wrinkles and improve the physical quality of the recording medium.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of an embodiment of a recording apparatus.

FIG. 2 is a diagram of the recording head mechanism of FIG. 1;

FIG. 3 is a front view of a recording head.

FIG. 4 is a diagram illustrating a recording head mechanism according to a second embodiment.

FIG. 5 is a diagram illustrating a recording process according to a third embodiment.

FIG. 6 is a front view of a recording head according to a fifth embodiment.

[Explanation of symbols]

 Reference Signs List 101 carriage 102 recording head 102a discharge port 103, 131 to 135 magnetron 104, 105 guide shaft 106 recording medium 108 platen 111 waveguide

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hiroshi Taka 3-30-2 Shimomaruko, Ota-ku, Tokyo Inside Canon Inc. (56) References JP-A-62-240556 (JP, A) JP-A-1 JP-A-290430 (JP, A) JP-A-1-260284 (JP, A) JP-A-2-190307 (JP, A) JP-A-58-29456 (JP, U) (58) Fields investigated (Int. . ^7, DB name) B41J 2/01 B41J 2/21 B41J 29/00

Claims (17)

(57) [Claims] 1. An ink liquid ejected from a first ejection port for ejecting a first color ink droplet mounted on a carriage and a second ejection port for ejecting a second color ink droplet. An ink jet recording apparatus for forming a recorded image on a recording medium by attaching droplets to the recording medium, wherein the first ejection port is disposed along a moving direction of the carriage during a recording operation, and the first ejection port ejected onto the recording medium. An inkjet recording apparatus, wherein microwave irradiation means for promoting fixing of an ink droplet of one color and the second ejection port are arranged on the carriage in this order. 2. A method according to claim 1, wherein the first ejection port ejects ink droplets of the first color and the second ejection port ejects ink droplets of the second color. An ink jet recording apparatus for forming a recording image on the recording medium by attaching the recording medium, wherein the first discharge port, a microwave irradiation unit for promoting fixing of the first color ink droplet discharged to the recording medium, And the second discharge port is arranged in this order, and after the microwave irradiation unit irradiates the microwave to the area where the first color ink droplet adheres to the recording medium from the first discharge port. An ink jet recording apparatus for adhering the ink droplet of the second color ejected from the second ejection port to the attachment area. 3. An image is formed by superposing ink droplets of a second color by a second ink jet recording head on a first color ink discharged onto a recording medium by a first ink jet recording head and discharging the ink. In the ink jet recording method, the microwave for promoting the fixing of the first color ink droplets to an area on the recording medium from which the first color ink droplets are ejected by the first ink jet recording head is formed. An ink jet recording method, comprising, after irradiation, forming a recorded image by overlapping ink droplets of the second color ejected from the first ink jet recording head onto the area. 4. A first ejection port for ejecting a first color ink droplet mounted on a carriage, a second ejection port for ejecting a second color ink droplet, and a third ink droplet. An ink jet recording apparatus that forms a recording image on a recording medium by adhering ink droplets ejected from the third ejection port onto the recording medium, along a moving direction of the carriage during a recording operation. The first discharge port, microwave irradiation means for promoting fixing of the ink droplets of the first color discharged on the recording medium, the second discharge port, and the third discharge port, An ink jet recording apparatus, which is arranged on a carriage in this order. 5. A first ejection port for ejecting a first color ink droplet, a second ejection port for ejecting a second color ink droplet, and an ink droplet for ejecting a third color ink droplet. An ink jet recording apparatus for forming a recording image on a recording medium by attaching ink droplets ejected from a third ejection port to a recording medium, wherein the first ejection port and the Microwave irradiation means for accelerating the fixing of the ink droplets of one color, the second ejection port, and the third ejection port are arranged in this order, and the microwave ejection means is arranged on the recording medium from the first ejection port. After irradiating the microwave to the attachment area of the first color ink droplet by the microwave irradiating unit, the second color ink droplet is ejected from the second ejection port to the attachment area; The third color ink droplets ejected from the third ejection port. An ink jet recording apparatus according to claim Rukoto. 6. A third ink jet recording head, wherein a second color ink droplet is ejected by a second ink jet recording head onto a first color ink ejected onto a recording medium by a first ink jet recording head. In the ink-jet recording method of forming an image by ejecting ink droplets of the third color in an overlapping manner, a recording medium on which the ink droplets of the first color have been ejected by the first inkjet recording head Area is irradiated with microwaves that promote fixing of the first color ink droplets, and then the second color ink droplets ejected from the second inkjet recording head to the area are irradiated with the third color ink droplets. An ink jet recording method, wherein a recorded image is formed by superimposing ink droplets of the third color ejected from the ink jet recording head. 7. A first ejection port for ejecting a first color ink droplet mounted on a carriage, a second ejection port for ejecting a second color ink droplet, and a third color ink. An ink jet recording apparatus for forming a recorded image on a recording medium by adhering ink droplets ejected from a third ejection port for ejecting droplets to a recording medium, in a moving direction of the carriage during a recording operation; Along the first discharge port, first microwave irradiation means for promoting fixing of the ink droplets of the first color discharged on the recording medium, the second discharge port, and discharge to the recording medium. Said second
An ink jet recording apparatus comprising: a second microwave irradiating unit for facilitating fixing of the ink droplets of the colors; and the third ejection port, which are arranged in this order on the carriage. 8. A first ejection port for ejecting ink droplets of a first color, a second ejection port for ejecting ink droplets of a second color, and ejecting ink droplets of a third color. An ink jet recording apparatus for forming a recording image on a recording medium by attaching ink droplets ejected from a third ejection port to a recording medium, wherein the first ejection port and the First microwave irradiating means for promoting the fixation of the ink droplet of one color, the second ejection port, and second means for promoting the fixation of the ink droplet of the second color ejected to the recording medium. Microwave irradiation means and the third discharge port are arranged in this order, and the first discharge port is disposed on the recording medium from the first discharge port to the first color ink droplet. After irradiating the microwave with the microwave irradiating means, the second
The ink droplets of the second color ejected from the ejection port are attached, and the attached area is irradiated with microwaves by the second microwave irradiation means. An ink jet recording apparatus, wherein an ink droplet of a third color to be ejected is attached. 9. A third inkjet recording head, wherein a second color ink droplet is ejected by a second inkjet recording head onto a first color ink ejected onto a recording medium by a first inkjet recording head. An ink jet recording method for forming an image by ejecting ink droplets of the third color in a superposed manner, wherein the recording medium ejected the ink droplets of the first color by the first ink jet recording head After irradiating the upper region with a rolling wave that promotes the fixation of the first color ink droplet, the second color ink droplet discharged from the second inkjet recording head is discharged to the region. And irradiating the region with a microwave for promoting the fixation of the ink droplet of the second color, and then ejecting the third color ink ejected from the third inkjet recording head. The ink jet recording method, which comprises forming a recording image by overlapping droplets. 10. The method according to claim 1, wherein the ink droplets of the first color are inks having characteristics of lowering permeability to a recording medium than the ink droplets of the second color.
The inkjet recording apparatus according to any one of claims 4 and 5. 11. The ink droplets of the first color, than said second ink droplet of a color, according to claim 3, wherein the ink der Turkey permeability is low characteristics for the recording medium , 6
The inkjet recording method according to any one of the above items. 12. The ink droplet according to claim 1, wherein the ink droplet of the first color is an ink having a property of lowering fixability to a recording medium than the ink droplet of the second color.
The inkjet recording apparatus according to any one of 2, 4, and 5. 13. The ink droplet of claim 1, wherein the ink droplet of the first color is an ink having a property of lowering fixability to a recording medium than the ink droplet of the second color.
The inkjet recording method according to any one of the above items. 14. The apparatus according to claim 1, wherein said microwave irradiation means is a waveguide for guiding microwaves generated by a magnetron to an irradiation area.
13. The inkjet recording apparatus according to any one of 8, 10, and 12. 15. The microwave irradiation means according to claim 3, wherein said microwave irradiation means is a waveguide for guiding a microwave generated by a magnetron to an irradiation area.
3. The ink jet recording method according to any one of the above items 3. 16. The method according to claim 1, wherein each ink droplet is an electrothermal converter or an electromechanical converter.
The inkjet recording apparatus according to any one of 2, 4, 5, 7, 8, 10, 12, and 14. 17. The method according to claim 3, wherein each ink droplet is an electrothermal converter or an electromechanical converter.
The inkjet recording method according to any one of 6, 9, 11, 13, and 15.