JPH06270397A - Recorder - Google Patents

Abstract

PURPOSE:To provide a recorder which can ink jet record in high quality level with high image quality, high recording density, excellent reproducibility of multicolor recording without limiting by a type of a medium to be recorded. CONSTITUTION:The recorder comprises recording ink containing aqueous soluble dye, polyvalent alcohol, its derivative, 1-4C alkyl alcohol, and nitrogen compound to record an image on a medium 103 to be recorded, an ink jet recording head 111 discharging the ink in response to a record signal to record an image on the medium, and a coating unit 125 for coating the medium 103 with a coating material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus using an ink jet recording system in which ink droplets are ejected and adhered to a recording medium for recording, and it is stable without being affected by the type of recording medium. The present invention relates to an ink jet recording apparatus capable of obtaining high quality printing.

[0002]

2. Description of the Related Art Ink jet recording systems use various ink ejection systems such as an electrostatic suction system, a system in which a piezoelectric element is used to mechanically vibrate or displace the ink, and the ink is heated and foamed to utilize its pressure. The method is to generate and fly small droplets of ink, and then attach some or all of them to a recording medium such as paper for recording, which produces less noise, high-speed printing, and high-quality printing. It is attracting attention as a recording method that enables printing and multicolor printing.

However, when the recording medium used for such ink jet recording is a normal recording paper such as PPC paper, the adhered ink permeates and diffuses into the water-absorbing cellulose fiber by capillary action. Therefore, the image quality is degraded such as bleeding and outflow. Further, there is a problem that the recording density is lowered because the dye in the ink is dispersed and adsorbed due to the influence of the permeation and diffusion. On the other hand, JP-A-1-
A recording ink in which a basic substance is contained in the ink as disclosed in Japanese Patent No. 213376 and the ink pH is in the range of 12 to 14 is prepared by using a strong alkaline ink containing a basic substance such as sodium hydroxide to produce cellulose. Since it dissolves fibers or sizing agents, it prevents the ink from penetrating and diffusing, thus preventing deterioration of image quality. However, this recording ink has a corrosive action because it is made strongly alkaline with a hydroxide of an alkali metal such as sodium hydroxide, and when the recording ink adheres to the skin of a hand or the like, it causes irritation such as a rash. There was a safety issue.

In the ink jet recording apparatus,
There is a recording apparatus that prevents deterioration of image quality due to bleeding or flowing out by a mechanical control means such as forcibly drying ink on a recording medium by a heater or the like, but a recording medium just forcibly dried has many problems such as recording density or color. There was a problem in color reproducibility required for color recording.

Therefore, in the case of ink jet recording, there is a case such as a paper for exclusive use of ink jet in which the surface of paper is coated with an inorganic pigment such as silica or calcium carbonate or barium sulfate, or a film for exclusive use of ink jet whose surface is specially treated so that the ink does not easily flow. In addition, by using a dedicated recording medium that has been subjected to a special treatment exclusively for inkjet recording, it has been possible to ensure image quality and improve color reproducibility such as recording density or color for multicolor recording.

[0006]

However, the conventional ink jet recording apparatus has a problem that high quality print recording cannot be performed unless the limited recording medium for exclusive use is used. . Further, these recording media have a problem that the price becomes high because of the above-mentioned special processing and special materials. Furthermore, if a user who handles the inkjet recording apparatus mistakenly uses a different type of recording medium, not only high quality print recording cannot be performed due to bleeding of the recording ink, but also the recording apparatus flows due to the flow of the recording ink. There was a problem of causing fatal pollution inside. Further, as described above, by containing a hydroxide of an alkali metal such as sodium hydroxide in the recording ink, the recording ink said to prevent permeation and diffusion of the ink is not only strongly alkaline,
Since it has a corrosive effect, there is a safety problem in that when the recording ink adheres to the skin of the user's hand, irritation such as a rash occurs.

Therefore, the present invention solves the above problems and enables not only the user's safety but also high-quality ink jet recording without being limited to the type of recording medium used. Another object of the present invention is to provide a recording apparatus capable of obtaining a recording medium that retains high image quality, high recording density, and high color saturation without causing contamination inside the recording apparatus due to the flow of recording ink.

[0008]

In order to solve the above problems, in the recording apparatus of the present invention, a water-soluble dye, a polyhydric alcohol and its derivative, and a carbon atom having 1 carbon atom are used for recording an image on a recording medium. Recording ink containing an alkyl alcohol of 4 to 4 and a nitrogen compound, and an ink jet recording means for ejecting the recording ink according to a recording signal to record an image on the recording medium and the recording medium. It has a coating means for coating the coating material.

[0009]

By the coating means as described above, the water-soluble dye, the polyhydric alcohol and its derivative, the carbon atom number of 1 to 1 are obtained.
The recording ink containing a resin material having a characteristic of appropriately absorbing the recording ink containing the alkyl alcohol of 4 and a nitrogen compound or being appropriately compatible with the recording ink is used as the recording ink. Can be coated on the recording medium before the recording is performed. Further, the recording ink has an ink composition containing a water-soluble dye, a polyhydric alcohol and its derivative, an alkyl alcohol having 1 to 4 carbon atoms, and a nitrogen compound, thereby increasing the solubility of the dye in the ink, Not only is there little outflow, etc., but it also has compatibility with the coating material on the recording medium. Then, the recording ink is ejected by the inkjet recording unit in accordance with a recording signal onto the recording medium on which the coating material made of the resin material having the above-mentioned characteristics is relatively thinly coated by the coating unit. By recording an image, high-quality inkjet recording with high image quality, high recording density, and good color reproducibility in multicolor recording is possible without being limited by the type of recording medium used. It is possible to provide various recording devices.

[0010]

EXAMPLES Examples of the present invention will be described below, but these examples further specifically describe the present invention, and the embodiments are not limited thereto. (Embodiment 1) FIG. 1 is a perspective view showing the structure of an ink jet printer using the present invention, and FIG. 2 is a sectional view showing a recording head unit used in the ink jet printer shown in FIG.
3 shows the configuration of the inkjet printer of FIG. 1 as seen from the side.

In FIG. 1, 101 is a platen roller that rotates in the direction of arrow 107 by a motor or the like (not shown), and arrow 102 shows the direction in which the recording medium 103 is moved by the platen roller. 104 is a carrier, which is carried on a shaft 105. A drive timing belt 106 is stretched between pulleys (not shown). The carrier 104 is clamped to the drive timing belt 106 by the clamp means 110 as shown in FIG. Reference numeral 111 is an ink jet recording head, and in a state where the ink supply pipe 112 is connected,
It is fixed on the carrier 104 by a fixing tool (not shown). Reference numeral 124 denotes a coating roller, which coats the recording material prepared in the coating unit 125 on the recording medium 103 in accordance with the rotation of the platen roller 101.

FIG. 3 is a side view of the construction perspective view of the ink jet printer of FIG. 1, and the coating unit 125 is shown in a sectional view. 3, the same parts as those in FIG. 1 are designated by the same reference numerals. In FIG. 3, the ink jet recording head 111 includes a recording head unit and a pressure adjusting unit (not shown). In the coating unit 125, 2.0 of partially saponified polyvinyl alcohol having an average degree of polymerization of 1800 and a saponification rate of 88% is used.
Wt%, ion-exchanged water 83.0 wt%, ethanol 1
A coating material 123 of 5.0% by weight is included. A coating material agitating / supplying roller 122 is supplied to the coating roller 124 with an appropriate coating thickness, and is adjusted by the coating material thinning means 121 to have an appropriate coating thickness. Further, the coating roller 124 is provided on the recording medium 103 so as to have an appropriate film thickness.
The thickness is adjusted so as to move up and down in the direction of the arrow 120. The entire coating unit can be moved by pressing means (not shown), and this movement causes the coating roller 124 to contact the recording medium 103,
Non-contact can be controlled.

The operation of the printer, which is a recording apparatus using the present invention having the above-described structure, will be described with reference to FIGS. 1 and 3. The recording medium 103 is a platen roller 10.
The recording medium is wound around the recording medium 1 and is set in a state in which recording can be easily performed by a recording medium pressing mechanism (not shown). And
By rotating the platen roller 101, the recording medium 103 is carried out in the direction of arrow 102. First, when the tip of the recording medium 103 wound around the platen roller 101 is rotated to the position of the coating roller 124, the coating unit 125 is pressed against the platen roller 101 by a pressing unit (not shown), and the recording medium by the coating roller 124 is pressed. The coating of 103 is started. Since the platen roller 101 rotates in the direction of the arrow 107, inkjet recording is performed at the position of the inkjet recording head 111 on the coating film of the recording medium 103. The carrier 104 is stopped at the position of one end of the platen roller before recording is started.

Next, when recording is started, a pulley (not shown) rotates, and the drive timing belt 106 associated with the pulley causes the carrier 104 to reciprocate on the shaft 105 in the main scan, and the platen roller 101 moves to the position shown in FIG. The sub-scanning movement is made in the direction of arrow 107 in FIG. At this time, when a recording signal is input to the recording head 111, ink particles are ejected from the recording head 111, and the ink particles adhere to the coating film on the recording medium 103 to perform recording. Thus, the carrier 104
By repeating the main scanning by the reciprocating movement of 1 and the sub scanning by the rotation of the platen roller 101, coating and inkjet recording are performed on the recording medium 103.

The recording ink used for ink jet recording includes water-soluble dyes, polyhydric alcohols and their derivatives, alkyl alcohols having 1 to 4 carbon atoms,
It is a recording ink having an ink composition containing a nitrogen compound and a specific ink composition ratio and ink physical properties are as follows.

<< Ink 1 >> C.I. I. DirectBlue 199 3.0 wt% Diethylene glycol 15.0 wt% Ethanol 2.5 wt% Triethanolamine 0.8 wt% Ion-exchanged water 78.7 wt% Viscosity 2.1 cP Surface tension 56.0 dyne / cm pH 9. 5 << Ink 2 >> C.I. I. DirectYellow86 2.0 wt% Diethylene glycol 17.0 wt% Ethanol 2.5 wt% Triethanolamine 0.8 wt% Ion-exchanged water 77.7 wt% Viscosity 2.3 cP Surface tension 53.0 dyne / cm pH 9. 0 is a sectional view of the recording head portion of the inkjet recording head 111. Here, the recording head portion 154 of the inkjet recording head 111 is shown, and recording head portions for Y (yellow), M (magenta), and C (cyan) are formed in the recording head 111. And 1
Reference numeral 50 is a piezo element, 151 is an ink flow path, 152
Is a recording ink. Reference numeral 153 denotes a nozzle that ejects ink particles, and when a recording signal is input, the piezo element 1
50 reciprocates in the direction of arrow 155, and in conjunction with this, ink particles are ejected from the nozzle 153.

As described above, in the ink jet recording apparatus of the present invention, by the coating means,
Since the coating material can be coated on the recording medium before recording with the recording ink, image recording with the recording ink is performed on the coating film coated on the recording medium. It is possible to perform high-quality ink jet recording, which is not limited to the type of recording medium to be used, and has high image quality, high recording density, and good color reproducibility in multicolor recording. Further, in multicolor recording, a series of ink ejection operations can be repeated as necessary. For example, in order to perform multicolor recording with the inks 1 and 2 having the above composition, the multicolor recording can be performed by the method of performing the multicolor recording on the recording medium by ejecting the ink 2 onto the ink 1. . If the ink 1 and the ink 2 having the above composition are used, good recording and recording characteristics can be obtained without coating the recording medium. Good results were also obtained for printing. From this, when the ink 1 and the ink 2 are used, the coating film can be thinned and the drying of the coating film can be accelerated.

(Embodiment 2) FIG. 4 is a perspective view showing the construction of another embodiment of the ink jet printer according to the present invention, and FIG. 5 is a side view of the ink jet printer shown in FIG. 4 and 5, the same parts as those in FIGS. 1 and 3 are designated by the same reference numerals.

In FIG. 4, 101 is a platen roller which rotates in the direction of arrow 107 by a motor or the like.
Reference numeral 2 indicates the direction in which the recording medium 103 is moved by the platen roller. 104 is a carrier, and the shaft 105
Carried on top. A drive timing belt 106 is stretched between pulleys (not shown). As shown in FIG. 5, the carrier 104 is clamped to the drive timing belt 106 by the clamp means 110. Reference numeral 111 is an ink jet recording head, and 112
In the state that the ink supply pipe of is connected, the carrier 10
It is fixed on the upper surface of the unit 4 by a fixing tool (not shown). The coating means 201 has a high-pressure inert gas tube 203 and a coating material supply pipe 204 attached thereto, and is fixed to the carrier 104. The high-pressure inert gas tube 203 is connected to a high-pressure inert gas cylinder (not shown) via a pressure cap and an opening / closing valve. Ink supply pipe 1
An ink tank (not shown) is connected to the tip of 12, and a coating material tank (not shown) is connected to the tip of the coating material supply pipe. An average degree of polymerization of 500 and a saponification rate of 98.
2.0% by weight of fully saponified polyvinyl alcohol of 5%
And 83.0% by weight of ion-exchanged water, 10% by weight of ethanol, and 5% by weight of diethylene glycol.

FIG. 5 is a side view of the ink jet printer shown in FIG. 5, the same parts as those in FIG. 4 are designated by the same reference numerals. In FIG. 5, the ink jet recording head 111 is a fixing member (not shown) that is used as the carrier 104.
The coating material supply pipe 204 is attached with a hollow needle 210 with a narrowed tip, and the high pressure inert gas tube 203 is attached with a hollow needle 202 with a narrowed tip. Hollow needles 202 and 2
10 is fixed at right angles by a fixture 205. When the opening / closing valve of a high pressure inert gas cylinder (not shown) is opened, high pressure inert gas is released from the cylinder (not shown) into a pressure cap and a high pressure inert gas tube 203. And is jetted at high speed from the open end of the hollow needle 202. Then, the coating material is sucked out from the hollow needle 210 through the coating material supply pipe 204 by the Venturi effect due to this high-speed gas flow, and is atomized and ejected at the same time as the above-mentioned gas, and the recording medium 103 is recorded. It is possible to coat the coating material on top.

The operation of the printer, which is a recording apparatus using the present invention having the above configuration, will be described. The recording medium 103 is wound around the platen roller 101,
A recording medium pressing mechanism (not shown) is set to a state in which recording is easy. Then, by rotating the platen roller 101 in the direction of arrow 107, the recording medium 103 is carried out in the direction of arrow 102. First, platen roller 1
A signal is given to open the open / close valve of the high pressure inert gas after the leading end of the recording medium 103 wound around 01 is sent to the coating means 201 and once stopped. Then, the recording medium 103 is coated. Next, when a recording signal is input to the recording head 111, ink particles are ejected from the recording head 111, and the ink particles adhere to the recording medium 103 to perform inkjet recording.

The carrier 104 is stopped at the position of one end of the platen roller before the start of recording. Next, when recording is started, a pulley (not shown) rotates, the drive timing belt 106 associated with the pulley causes the carrier 104 to reciprocate on the shaft 105 in the main scan, and the platen roller 101 moves in the direction of the arrow in FIG. The sub-scanning movement is performed in the 107 direction. At this time, when a recording signal is input to the recording head 111, ink particles are ejected from the recording head 111, and the ink particles adhere to the coating film on the recording medium 103 to perform recording. In this way, the main scanning by the reciprocating movement of the carrier 104 and the sub-scanning by the rotation of the platen roller 101 are repeated, so that the coating and the inkjet recording are performed on the recording medium 103.

Both the ink jet recording head 111 and the coating means 201 are arranged on the carrier 104, but the needles 202 and 210 for the air spray which is the coating means are the ink jet recording head 1.
It is arranged on the carrier 104 with a height difference from 11, and coating is performed on the recording medium 103 prior to ink jet recording. Therefore, the ink droplets due to the ink jet recording are always adhered to the coating film coated on the recording medium 103 and recording is performed.

As the recording head 111, the same head as that of FIG. 2 in the first embodiment was used. And for the recording ink used for inkjet recording, a water-soluble dye,
The recording ink has an ink composition containing a polyhydric alcohol and its derivative, an alkyl alcohol having 1 to 4 carbon atoms, and a nitrogen compound, and the specific ink composition ratio and ink physical properties are as follows.

<< Ink 3 >> C.I. I. DirectRed9 3.0 wt% Diethylene glycol 15.0 wt% Ethanol 3.5 wt% Diethanolamine 0.6 wt% Ion-exchanged water 77.9 wt% Viscosity 2.4 cP Surface tension 53.0 dyne / cm pH 9.5 << Ink 4 >> C.I. I. DirectYellow86 2.0 wt% Diethylene glycol 17.0 wt% Ethanol 2.5 wt% Diethanolamine 0.3 wt% Ion-exchanged water 78.2 wt% Viscosity 2.0 cP Surface tension 55.0 dyne / cm pH 9.0 or above As described above, in the inkjet recording apparatus of the present invention, the coating material can be coated on the recording medium before the recording with the recording ink by the coating means, so that the image recording with the recording ink is not performed. The high-quality inkjet, which is performed on the coating film coated on the recording medium, provides high image quality, high recording density, and good color reproducibility in multicolor recording regardless of the type of recording medium used. Expression recording can be performed.

In multicolor recording, a series of ink ejection operations can be repeated as necessary.
For example, in order to perform multicolor recording with the inks 3 and 4 having the above composition, the multicolor recording can be performed by a method of performing the multicolor recording on the recording medium by ejecting the ink 4 onto the ink 3. . Ink 3 and ink 4 having the above composition
By using, it was possible to obtain good printing characteristics without coating the recording medium. However, by combining the ink 3 and the ink 4 with the coating by the coating means, it was possible to perform clear multicolor recording with extremely high saturation. From this, the use of the ink 3 and the ink 4 makes it possible to thin the coating film and accelerate the drying of the coating film.

(Embodiment 3) FIG. 6 is a perspective view showing the construction of an ink jet printer using the present invention, and FIG. 7 is a sectional view showing a recording head unit and a coating head unit used in the ink jet printer of FIG. See also FIG.
Shows the configuration of the inkjet printer of FIG. 6 as viewed from the side. 6, 7 and 8, the same parts as those in FIGS. 1, 2 and 3 are designated by the same reference numerals.

In FIG. 6, reference numeral 101 denotes a platen roller which rotates in the direction of arrow 107 by a motor or the like.
Reference numeral 2 indicates the direction in which the recording medium 103 is moved by the platen roller. 104 is a carrier, and the shaft 105
Carried on top. A drive timing belt 106 is stretched between pulleys (not shown).

As shown in FIG. 8, the carrier 104 is clamped to the drive timing belt by the clamp means 110. Reference numeral 111 denotes an inkjet recording head, which is fixed to a carrier with a fixing tool (not shown) in a state where the ink supply pipe 112 is connected. 301
Is a coating head, which is mounted on the carrier 104 similarly to the inkjet recording head 111.
Reference numeral 112 denotes an ink supply pipe, one end of which is connected to the inkjet recording head 111. Reference numeral 302 denotes a coating material supply pipe, and a fixing tool (not shown) is used for the carrier 10.
It is fixed on 4. An ink tank (not shown) is connected to the other end of the ink supply pipe, and a coating material tank (not shown) is connected to the other end of the coating material supply pipe. In a coating material tank (not shown), 1.0% by weight of partially saponified polyvinyl alcohol having an average degree of polymerization of 1000 and a saponification rate of 84.5% and ion-exchanged water 7
A coating material consisting of 9.0% by weight, 15% by weight ethanol and 5% by weight diethylene glycol is included.

FIG. 8 is a side view of the ink jet printer of FIG. 8, the same parts as those in FIG. 6 are designated by the same reference numerals. In FIG. 8, the inkjet recording head 111 is fixed on the carrier by a fixing tool (not shown). Although not shown, the coating head 301 is similarly fixed to the carrier by a fixing tool.

The operation of the printer, which is a recording apparatus using the present invention having the above-described structure, will be described. The recording medium 103 is wound around the platen roller 101,
A recording medium pressing mechanism (not shown) is set to a state in which recording is easy. Then, by rotating the platen roller 101, the recording medium 103 is carried out in the direction of arrow 102. First, after the tip of the recording medium 103 wound around the platen roller 101 is sent to the coating head 301 of the coating means and temporarily stopped, when a jetting signal is input, the coating material is jetted from the coating head 301 and the recording medium 103. The coating is applied on top. When a recording signal is input to the recording head 111, ink particles are ejected from the recording head 111, and the ink particles adhere to the recording medium 103 to perform inkjet recording.

That is, the carrier 104 is stopped at the position of one end of the platen roller before the start of recording. Next, when recording is started, a pulley (not shown) is rotated, and the carrier is reciprocated on the shaft 105 in the main scanning by the drive timing belt 106 associated with the pulley,
The platen roller moves in the sub-scan direction in the direction of arrow 107 in FIG. At this time, when a recording signal is input to the recording head 111, ink particles are ejected from the recording head 111,
Recording is performed by the ink particles adhering to the coating film on the recording medium 103. In this way, the main scanning by the reciprocating movement of the carrier and the sub-scanning by the rotation of the platen roller are repeated, whereby coating and inkjet recording are performed on the recording medium.

Regarding the recording ink used for ink jet recording, water-soluble dyes, polyhydric alcohols and their derivatives, alkyl alcohols having 1 to 4 carbon atoms,
It is a recording ink having an ink composition containing a nitrogen compound and a specific ink composition ratio and ink physical properties are as follows.

<< Ink 5 >> C.I. I. DirectBlue199 3.0 wt% Triethylene glycol 13.0 wt% Isopropyl alcohol 3.0 wt% Triethanolamine 0.7 wt% Ion-exchanged water 80.3 wt% Viscosity 1.8 cP Surface tension 52.0 dyne / cm p H 9.2 << Ink 6 >> C.I. I. DirectRed277 3.0 wt% Triethylene glycol 13.0 wt% Isopropyl alcohol 3.0 wt% Triethanolamine 0.6 wt% Ion-exchanged water 80.4 wt% Viscosity 2.0 cP Surface tension 53.0 dyne / cm p H 9.0 Here, FIG. 7 is a sectional view of the recording head portion of the inkjet recording head 111.

Reference numeral 303 is a heating resistor, and 30
Reference numeral 4 is a barrier, 305 is a nozzle, 306 is an orifice plate, and 307 is recording ink. Reference numeral 305 denotes a nozzle that ejects ink particles. When a recording signal is input, the heating resistor 303 is energized, the recording ink 307 on the upper portion thereof causes a boiling phenomenon, and the pressure of bubbles generated causes ink to be ejected from the nozzle 305. It is ejected as particles. Further, although FIG. 7 shows one nozzle, in actuality, a structure similar to this is a structure in which 24 pairs are laminated in the front-back direction with respect to the paper surface, and the recording signal is 2 for each.
The four nozzles can be independently input.

The coating head 301 has exactly the same structure as the ink jet recording head 111, can input a recording signal to each of 24 nozzles, and can control the ejection of the coating material for each nozzle. Therefore, it is possible to perform coating in advance only on the portion where the recording ink is ejected onto the recording medium 103.

As described above, in the ink jet recording apparatus of the present invention, by the coating means,
Since the coating material can be coated on the recording medium before recording with the recording ink, image recording with the recording ink is performed on the coating film coated on the recording medium. It is possible to perform high-quality ink jet recording, which is not limited to the type of recording medium to be used, but has high image quality, high recording density, and good color reproducibility in multicolor recording.

In multicolor recording, a series of ink ejection operations can be repeated as necessary.
For example, in order to perform multicolor recording with the inks 5 and 6 having the above-described composition, the multicolor recording can be performed by a method of performing the multicolor recording on the recording medium by ejecting the ink 6 onto the ink 5. . Ink 5 and ink 6 having the above composition
By using, it was possible to obtain good printing characteristics without coating the recording medium. However, by combining the ink 5 and the ink 6 with the coating by the coating means, it was possible to perform clear multicolor recording with extremely high saturation. Therefore, when the ink 5 and the ink 6 are used, the coating film can be thinned and the drying of the coating film can be accelerated.

Needless to say, any ink other than the recording inks shown in this embodiment can be appropriately used, and the effect of the present invention is multicolor ink or full color ink. It goes without saying that the same applies to an inkjet recording apparatus.

Although the printer has been described as an example in the present embodiment, the present invention can be similarly applied to a facsimile or a copier.

[0041]

As is apparent from the above description, in the present invention, in order to record an image on a recording medium, a water-soluble dye, a polyhydric alcohol and its derivative, an alkyl alcohol having 1 to 4 carbon atoms, and A recording ink containing a nitrogen compound, an ink jet recording means for ejecting the recording ink according to a recording signal to record an image on the recording medium, and a coating material for coating the recording medium. By having the coating means of, high image quality is not limited to the type of recording medium used,
It is possible to provide a recording apparatus that enables high-quality inkjet recording with high recording density and good color reproducibility in multicolor recording.

[0042]

[Brief description of drawings]

[0043]

FIG. 1 is a configuration perspective view of a recording apparatus according to a first embodiment of the present invention.

[0044]

FIG. 2 is a cross-sectional view of the inkjet recording head used in Example 1.

[0045]

FIG. 3 is a configuration diagram of a first embodiment of the recording apparatus of the present invention as viewed from the side.

[0046]

FIG. 4 is a configuration perspective view of a recording apparatus according to a second embodiment of the present invention.

[0047]

FIG. 5 is a configuration diagram of a recording apparatus according to a second exemplary embodiment of the present invention as viewed from a side surface.

[0048]

FIG. 6 is a configuration perspective view of a recording apparatus according to a third embodiment of the invention.

[0049]

FIG. 7 is a cross-sectional view of the inkjet recording head used in Example 3.

[0050]

FIG. 8 is a configuration diagram of a recording apparatus according to a third embodiment of the present invention as viewed from a side surface.

[0051]

[Explanation of symbols]

 101 Platen Roller 103 Recording Medium 104 Carrier 105 Shaft 106 Drive Timing Belt 111 Inkjet Recording Head 112 Ink Supply Pipe 120-125 Coating Means 201-210 Coating Means 301-305 Coating Means

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Reference number within the agency FI Technical display location C09D 11/00 PSZ 7415-4J (72) Inventor Masayoshi Shiraishi 6-31-1 Kameido, Koto-ku, Tokyo No. Seiko Electronics Industry Co., Ltd.

Claims (1)

[Claims] 1. A recording ink containing a water-soluble dye, a polyhydric alcohol and a derivative thereof, an alkyl alcohol having 1 to 4 carbon atoms, and a nitrogen compound for recording an image on a recording medium. An inkjet recording unit that discharges the recording ink according to a recording signal to record an image on a recording medium; and a coating unit that coats a coating material on the recording medium. Recording device.