JP2002254617A - Ink jet recording device, ink jet recording method and ink jet recording head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress a temperature rising of a recording head by reducing the deviation of heat generated at the recording head. SOLUTION: The deviation of heat generation involved in recording with the recording head is reduced by disposing ink ejection parts (B, K, C, M) having a low average print duty between each ink ejection part for discharging ink in ink ejection parts (LC, LM, Y) having a high average print duty, so that the temperature rising at the recording head is suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet recording apparatus, an ink jet recording method, and an ink jet recording head which perform recording by discharging ink from a recording head onto a recording material.

[0002]

2. Description of the Related Art Recording apparatuses such as printers, copiers, and facsimile machines are configured to record an image composed of dot patterns on a recording material such as paper or a thin plastic plate based on image information. . The recording device can be classified into an ink jet type, a wire dot type, a thermal type, a laser beam type, and the like according to a recording method. Ink (recording liquid) droplets are ejected and ejected from the ejection ports, and are adhered to a recording material to perform recording.

[0003]

In an ink jet recording apparatus, particularly in a bubble jet system, a recording head is heated by heat generated by a heater. If the temperature of the head rises excessively, there will be a problem of non-ejection in which ink cannot be ejected, a problem of accelerated burning and deterioration of the heater, a problem of a change in recording density when recording on a recording material such as paper, etc. Since various adverse effects are caused, measures have been taken to suppress the temperature rise of the recording head.

[0004] The most common measure for suppressing the temperature rise is to provide a pause time between each scan after the recording head has risen to some extent, and to radiate heat during that time. However, in this method, the net printing speed becomes smaller than the actual printing speed (drive frequency) of the recording head.

Further, it is useful to use a fan as a cooling method of a head heated by heat generated during printing, and an example of fixing the fan to a carriage of a recording head is known. However, when the fan is fixed to the carriage, the carriage becomes heavy, making it difficult to increase the driving frequency. In addition, as the ink droplets become smaller, there is a concern that the landing position may be deviated due to the air blow during printing. .

A method of cooling using a liquid is also conceivable. In this regard, the following proposals have been made.

[0007] For example, in Japanese Patent No. 2738697, in a bubble jet (registered trademark) type liquid jet recording head, for example, a cooling means is provided in a thermal energy action section, and a tube is wound around the liquid jet recording head. In addition, the discharge performance of the droplet is stabilized by flowing the cooling liquid through the tube.

However, in the above-mentioned conventional example, the structure of the flow path for flowing the cooling liquid is complicated, which makes production difficult, and how the cooling liquid is supplied, and how the cooling liquid is exchanged. Also, the means of disposal must be considered.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and eliminates the bias of heat generation in a recording head without making any special structural change such as a cooling structure in the recording head, thereby improving efficiency. It is another object of the present invention to provide an ink jet recording apparatus, an ink jet recording method, and an ink jet recording head capable of suppressing the temperature rise of the recording head.

[0010]

SUMMARY OF THE INVENTION The present invention for solving the above-mentioned problems generates thermal energy when ejecting ink.
An ink jet recording apparatus or a recording method for performing recording using an ink ejection unit corresponding to a plurality of colors, wherein the ink ejection unit corresponding to the plurality of colors has at least two of the plurality of colors having the same color relative to each other. A dark ink ejection section for ejecting dark ink having a high density and a light ink ejection section for ejecting light ink having a relatively low density, and the arrangement order of the ink ejection sections corresponding to the plurality of colors in a predetermined direction is as follows. The arrangement order is such that at least one other ink ejection unit is arranged between the light ink ejection units corresponding to the two colors.

The present invention also relates to an ink jet recording apparatus or recording method for performing recording using an ink discharge section corresponding to a plurality of colors, which generates thermal energy when discharging ink, wherein Ink ejection part
For at least two of the plurality of colors, a dark ink ejection unit that ejects a relatively high-density dark ink of the same color and a light ink ejection unit that ejects a relatively low-density light ink, The order of arrangement of the ink ejection sections corresponding to the plurality of colors in the predetermined direction is such that the light ink ejection sections corresponding to the two colors are arranged apart from each other so as not to be adjacent to each other.

The present invention is also an ink jet recording method for performing recording by using a plurality of ink discharge units that generate thermal energy when discharging ink, wherein the plurality of ink discharge units are black (Bk). Ink ejection section, light magenta (LM) ink ejection section, dark magenta (M) ink ejection section, light cyan (LC) ink ejection section, dark cyan (C)
An ink ejection section and a yellow (Y) ink ejection section, and the arrangement order of the ink ejection sections in a predetermined direction is such that the light magenta (LM) ink ejection section and the light cyan (L
C) The ink ejection section and the yellow (Y) ink ejection section are arranged so as to be separated from each other so as not to be adjacent to each other.

Further, the present invention is an ink jet recording head having an ink ejection portion corresponding to a plurality of colors, which generates thermal energy when ejecting ink, wherein the ink ejection portion corresponding to the plurality of colors is For at least two of the plurality of colors, a dark ink ejection unit for ejecting a relatively high-density dark ink of the same color and a light ink ejection unit for ejecting a relatively low-density light ink are provided. The arrangement order of the ink ejection units corresponding to the colors in the predetermined direction is the arrangement order in which at least one other ink ejection unit is arranged between the light ink ejection units corresponding to the two colors.

According to the present invention, there is provided an ink jet recording head having an ink ejection section corresponding to a plurality of colors, which generates thermal energy when ejecting ink, wherein the ink ejection section corresponding to the plurality of colors comprises: For at least two of the plurality of colors, a dark ink ejection unit for ejecting a relatively high-density dark ink of the same color and a light ink ejection unit for ejecting a relatively low-density light ink are provided. The order of arrangement of the ink ejection sections corresponding to the colors in the predetermined direction is such that the light ink ejection sections corresponding to the two colors are arranged apart from each other so as not to be adjacent to each other.

According to the present invention, there is provided an ink jet recording head having a plurality of ink ejection sections for generating thermal energy when ejecting ink, wherein the plurality of ink ejection sections are black (Bk) ink ejection sections, Light magenta (L
M) an ink ejection section, a dark magenta (M) ink ejection section, a light cyan (LC) ink ejection section, a dark cyan (C) ink ejection section, and a yellow (Y) ink ejection section. The arrangement order in the direction is such that the light magenta (LM) ink ejection unit, the light cyan (LC) ink ejection unit, and the yellow (Y) ink ejection unit are arranged so as to be separated from each other so as not to be adjacent to each other. There is a feature.

[0016]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 5 is a partially cutaway perspective view showing a conceptual configuration of the ink jet recording apparatus. In this ink jet recording apparatus, the carriage 200 is an endless belt 201
And can move along the guide shaft 202. Endless belt 201 is wound around pulleys 203 and 204. The drive shaft of a carriage drive motor 205 is connected to the pulley 203. Therefore, the carriage 200 is scanned by the rotation of the motor 205 in the reciprocating direction (A direction) along the guide shaft 202. On the carriage 200,
A recording head 10 in which a plurality of ink ejection nozzles are arranged in parallel and an ink tank IT as a container for storing ink are mounted.

The recording head 10 is provided with a plurality of ink ejection ports arranged in parallel in the transport direction of the paper P on a surface facing the paper P as a recording medium. Recording head 10
The ink path is provided in communication with each of the plurality of discharge ports, and an electrothermal converter that generates thermal energy for ink discharge is provided corresponding to each ink path. The electrothermal transducer generates heat energy by applying an electric pulse according to the driving data, and this heat energy is transmitted to the ink to cause film boiling of the ink, and the above-described ejection port is generated with the generation of the bubble. Eject ink from the. Each ink path is provided with a common liquid chamber commonly communicating with them, and this common liquid chamber is connected to the ink tank IT.

The recording head 1 is not limited to the above example.
A type using a piezoelectric element can also be used, and similarly generates thermal energy. In addition, this apparatus has a linear encoder 2 for detecting the moving position of the carriage.
06 is provided. That is, there is a linear scale 207 along the moving direction of the carriage 200, and slits are formed on the linear scale 207 at equal intervals such as 1200 pieces per inch. On the other hand, the carriage 200 is provided with, for example, a slit detection system 208 having a light emitting unit and a light receiving sensor and a signal processing circuit. Accordingly, as the carriage 200 moves, the encoder 206 outputs a discharge timing signal indicating the ink discharge timing and positional information of the carriage. If ink is ejected every time a slit is detected, printing at a resolution of 1200 dpi in the main scanning direction can be performed.

A recording sheet P as a recording medium is intermittently conveyed in a direction indicated by an arrow B perpendicular to the scanning direction of the carriage 200. The recording paper P includes a pair of roller units 209 and 210 on the upstream side and a pair of roller units 21 on the downstream side.
The head 1 is conveyed while maintaining a flatness with respect to the head 1 by applying a constant tension.
In this case, the driving force for each roller unit is applied by a paper transport motor (not shown).

With such a configuration, the carriage 20
0, the printing of the paper P while the printing of the width corresponding to the array width of the head ejection openings and the feeding of the paper P are alternately repeated.
The print is made entirely.

The carriage 200 stops at the home position as necessary at the start of printing or during printing. At the home position, a cap member 213 for capping the ejection surface side of each head is provided. The cap member 213 forcibly absorbs ink from the ejection port to prevent clogging of the ejection port. Suction recovery means (not shown) is connected.

FIG. 6 is a block diagram showing a configuration of a control system of the ink jet recording apparatus.

Upon receiving the print information from the host device, the CPU 100 executes control of each section of the recording apparatus, data processing, and the like. The ROM 101 stores a processing program relating to each processing procedure, and the RAM 102 is used as a work area when executing the processing procedure. That is, the CPU 100 processes the print information received from the host device using a peripheral unit such as the RAM 102 based on the control program stored in the ROM 101,
Perform processing such as conversion to print data. Also CP
U100 transmits the drive data of the electrothermal transducer, that is, the print data and the drive control signal to the head driver 103.
Output to The head driver 103 drives the electrothermal transducer of the recording head 10 based on the input drive data.

The CPU 100 includes a carriage drive motor 205 for reciprocating the carriage 200 and a paper transport (PF) motor 1 for transporting the recording paper P.
04 is controlled via motor drivers 105 and 106, respectively. The head driver 103 receives the ejection timing signal and the position information of the carriage from the encoder 206.

FIG. 7 is a view for explaining a cross section of the recording head of the ink jet recording apparatus. The recording head 10 is roughly composed of a chip (ink discharge section) 20 which forms a discharge port roughly, a chip plate 30 for fixing the chip, and a mold 40 which forms an ink tank.
The chip is composed of 21 to 26 inks for six colors, and is connected to the corresponding ink tanks 41 to 46 for the six colors by ink flow paths 51 to 56. The ink stored in the ink tanks 41 to 46 passes through the ink channels 51 to 56 to the chip 21.
, And are ejected from ejection ports formed in the chips 21 to 26 to be recorded on a recording material.

FIGS. 1 and 2 show the first and second embodiments of the present invention, respectively.
5 is a drawing that best represents the features of the embodiment. The members represented by the respective numbers are basically the same as those in FIG. 3 and 4 are drawings for explaining the first and second embodiments, respectively. FIG. 3 shows an example in which 11 different image samples arbitrarily extracted are separated into six colors, and the printing duty of each color (the percentage of ink discharged per unit time over the entire unit printing area) is obtained. Is calculated. According to FIG. 3, although depending on the image sample, the average is LC (light cyan), LM (light magenta), Y (yellow), Bk
It can be seen that the printing duty decreases in the order of (black), M (dark magenta) and C (dark cyan). That is, L
An LC ink ejection unit that ejects C ink, an LM ink ejection unit that ejects LM ink, a Y ink ejection unit that ejects Y ink, a Bk ink ejection unit that ejects Bk ink, an M ink ejection unit that ejects M ink, C that ejects C ink
It can be seen that the ink consumption per unit time and the calorific value per unit time are higher in each color ink discharge unit in the order of the ink discharge units.

Next, FIG. 4 shows the above-described six color inks (L
C, LM, Y, Bk, M, C) In an ink jet printing apparatus using a print head having each color ink discharge section for discharging, the temperature of the print head is increased by changing the arrangement order of each color ink discharge section in the print head. It is a measure of how different the quantities are. The heat load corresponding to the average value of the duty of each color shown in FIG. 3 is applied to each color in the main scanning direction according to the arrangement order shown on the right side of FIG. 4, and the recording when 20 sheets of A4 paper are printed. The change over time in the amount of temperature rise of the head was measured. As a result, under the first condition in which the arrangement order of the ink discharge units of each color is Bk, LC, LM, C, M, and Y, the ink discharge units of the upper two colors having a high print duty (LC ink discharge unit and LM ink discharge unit) Since the discharge units are adjacent to each other, the amount of temperature rise is large, but the arrangement order of the ink discharge units of each color is BK, LC, C, LM, C,
Under the second condition in the order of M and Y, since at least one other ink ejection unit is disposed between the upper two ink ejection units (LC ink ejection unit and LM ink ejection unit), the temperature rise amount It is suppressed. That is, the separation of the chip positions of the upper two LC and LM inks having the higher print duty can itself serve as a mechanism for suppressing the temperature rise. Although there are many possible arrangements of such ink discharge units, FIGS. 1 and 2 show two typical examples.

As shown in FIG. 3, the ink having the second highest printing duty after the LM ink and the LC ink is Y
Ink. Accordingly, in order to more effectively suppress the temperature rise of the recording head, not only the upper two ink ejection units (LC ink ejection unit and LM ink ejection unit) are separated from each other, but also the head temperature increase amount is reduced. It is preferable to separate the third Y ink ejection unit from the upper two ink ejection units. That is, the upper three (LC ink ejection unit, LM ink ejection unit, Y ink ejection unit) are arranged so as not to be adjacent to each other, and the lower three (BK, C) are located between the upper three (LC, LM, Y). , M), the head temperature rise can be suppressed more effectively. In other words, by adopting a configuration in which the top three LC, LM, and Y ink chips having high printing duties are separated from each other, a configuration is employed in which the top two LC, LM, and LM inks having high printing duties are simply separated from each other. Thus, more effective suppression of temperature rise is realized. In FIGS. 1 and 2 described above, the top three
Lower three colors (BK, C, M) between colors (LC, LM, Y)
Is shown.

As described above, the two high-order printing duties are LC (light cyan) and LM (light magenta).
All are light inks. Thus, printing of light ink d
It is presumed that the reason for the increase in uty is that the usage amount of the light ink tends to be larger than the usage amount of the dark ink due to image processing. FIG. 8 is a diagram illustrating image signal processing when two types of light and dark inks having different color material densities are used for the same color system. As is clear from FIG. 8, when the density level of the input image density signal is 0 to 128, only the light ink is used and the density level of the input image density signal is 12
In the case of 8 to 255, as the density level increases, the usage amount of the light ink is reduced and the usage amount of the dark ink is increased accordingly. In other words, the light ink (ink having a relatively low density for the same color system) is used at other than the density level 255, whereas the dark ink (ink having a relatively high density for the same color system) has a density level of 128 to 255. Since the ink is used only between the inks, the usage amount of the light ink tends to increase. Therefore, when inks of different densities are used for the same color system, the print duty of the light ink becomes higher than that of the dark ink, and as a result, the head temperature increase amount of the light ink discharge unit is higher than that of the dark ink discharge unit. Becomes larger. In light of this, when dark and light inks are used for a plurality of colors (for example, cyan and magenta), the light ink discharge units for these colors are arranged so as not to be adjacent to each other, and the light ink discharge portions for each color are arranged. By disposing other ink ejection sections (for example, C ink ejection section, M ink ejection section, Y ink ejection section, Bk ink ejection section) between the sections (for example, LC ink ejection section, LM ink ejection section). Thus, the temperature rise of the head can be suppressed efficiently.

As described above, in the embodiment according to the present invention, at least two colors (for example, C and M) of a plurality of colors (for example, C, M, Y, and Bk) used are of the same color system. And a light ink having a relatively low density is used, and at least one other ink is provided between the light ink discharge units for discharging the light inks (for example, LC and LM). By arranging the ejection unit, the temperature rise of the head can be efficiently suppressed.
As an example, when six types of ink ejection units of Bk, LC, LM, C, M, and Y are used, at least one other ink ejection unit (C) is provided between the LC ink ejection unit and the LM ink ejection unit. At least one of the ink ejection unit, the M ink ejection unit, the Y ink ejection unit, and the Bk ink ejection may be provided. As an arrangement method, for example, as shown in FIG. 1, the arrangement order of Bk, LC, C, LM, M, and Y, or as shown in FIG. 2, Bk, LM, M, LC, C,
The arrangement order of Y is preferable. Further, paying attention to the high printing duty of the Y ink next to the LM and LC inks, it is more preferable to arrange the Y ink ejection unit so as to be separated from the LC ink ejection unit and the LM ink ejection unit. That is, the top three (LC,
By arranging the lower three (BK, C, M) between LM, Y), it is possible to more efficiently suppress the head temperature rise.

In the above description, Bk, LC, LM, C,
Although the case where six types of inks of M and Y are used has been described, the types of inks used are not limited to these six types. For example, dark and light inks may be used not only for cyan (C) and magenta (M) but also for black (Bk) and yellow (Y). In this case, light cyan (LC), light magenta (L
M), light black (LBk), and light yellow (LY) are preferably separated from each other so as not to be adjacent to each other.

The present invention particularly provides an excellent effect in a recording apparatus using an ink jet type recording head for performing recording by forming flying droplets by utilizing thermal energy among ink jet recording methods.

The typical configuration and principle are described in, for example, US Pat. Nos. 4,723,129 and 4,740.
It is preferable to use the basic principle disclosed in the specification of Japanese Patent No. 796. This method is a so-called on-demand type,
Although it can be applied to any type of continuous type, in particular, in the case of the on-demand type, it can be applied to a sheet holding a liquid (ink) or an electrothermal converter arranged corresponding to a liquid path. By applying at least one drive signal corresponding to recording information and giving a rapid temperature rise exceeding nucleate boiling, heat energy is generated in the electrothermal transducer, and film boiling occurs on the heat acting surface of the recording head. Liquid (ink) corresponding to this drive signal
This is effective because air bubbles in the interior can be formed. By discharging the liquid (ink) through the discharge opening by the growth and contraction of the bubble, at least one droplet is formed. When the drive signal is formed into a pulse shape, the growth and shrinkage of the bubble are performed immediately and appropriately, so that the ejection of liquid (ink) having particularly excellent responsiveness can be achieved, which is more preferable. As the pulse-shaped drive signal, those described in US Pat. Nos. 4,463,359 and 4,345,262 are suitable. If the conditions described in US Pat. No. 4,313,124 of the invention relating to the temperature rise rate of the heat acting surface are employed, more excellent recording can be performed.

The configuration of the recording head may include a combination of a discharge port, a liquid path, and an electrothermal converter (a linear liquid path or a right-angle liquid flow path) as disclosed in the above-mentioned respective specifications. U.S. Pat. No. 4,558,333 and U.S. Pat.
A configuration using the specification of Japanese Patent No. 59600 is also included in the present invention. In addition, Japanese Unexamined Patent Application Publication No. 59-123670 discloses a configuration in which a common slit is used as a discharge portion of an electrothermal converter for a plurality of electrothermal converters. The effect of the present invention is effective even if the configuration is based on JP-A-59-138461, which discloses a configuration corresponding to a discharge unit. That is, according to the present invention, recording can be reliably and efficiently performed regardless of the form of the recording head.

In addition, even in the case of the serial type as described above, a recording head fixed to the apparatus main body or an electric connection with the apparatus main body or ink from the apparatus main body by being attached to the apparatus main body. The present invention is also effective when a replaceable chip-type recording head that can be supplied or a cartridge-type recording head in which an ink tank is provided integrally with the recording head itself is used.

In addition, in the embodiments of the present invention described above, the ink is described as a liquid. However, an ink which solidifies at room temperature or lower and which softens or liquefies at room temperature may be used. In general, the ink jet method generally controls the temperature of the ink itself within a range of 30 ° C. or more and 70 ° C. or less to control the temperature so that the viscosity of the ink is in a stable ejection range. Sometimes, the ink may be in a liquid state. In addition, in order to positively prevent temperature rise due to thermal energy by using it as energy for changing the state of the ink from a solid state to a liquid state, or to prevent evaporation of the ink, the ink is solidified in a standing state and heated. May be used. In any case, the application of heat energy causes the ink to be liquefied by the application of the heat energy according to the recording signal and the liquid ink to be ejected, or to start to solidify when reaching the recording medium. The present invention is also applicable to a case where an ink having a property of liquefying for the first time is used. In such a case, the ink
JP-A-54-56847 or JP-A-60-7
As described in Japanese Patent Publication No. 1260, it is also possible to adopt a form in which the sheet is opposed to the electrothermal converter in a state where it is held as a liquid or solid substance in the concave portion or through hole of the porous sheet. In the present invention, the most effective one for each of the above-mentioned inks is to execute the above-mentioned film boiling method.

The form of the ink jet recording apparatus of the present invention is not only used as an image output terminal of an information processing apparatus such as a computer, but also a copying apparatus combined with a reader or the like, and further a form of a facsimile apparatus having a transmitting / receiving function. May be adopted.

[0039]

As described above, according to the present invention,
It is possible to reduce a bias in generation of heat due to recording by a recording head having a plurality of ink ejection units, and as a result, it is possible to suppress a temperature rise of the recording head.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an ink jet recording head showing a specific arrangement order of a plurality of color ink ejection units according to a first embodiment of the present invention.

FIG. 2 is a sectional view of an ink jet recording head showing a specific arrangement order of a plurality of color ink ejection units according to a second embodiment of the present invention.

FIG. 3 is a diagram summarizing the results of analyzing the colors of ink and the printing duty thereof for various images.

FIG. 4 is a diagram showing the relationship between the arrangement order of each ink ejection unit and the change over time in the amount of temperature rise.

FIG. 5 is a partially cutaway perspective view of the ink jet recording apparatus.

FIG. 6 is a block diagram illustrating a configuration of a control system of the inkjet recording apparatus.

FIG. 7 is a diagram for explaining how a plurality of ink ejection units of the inkjet recording head are arranged in the main scanning direction.

FIG. 8 is a diagram illustrating image signal processing when two types of light and dark inks having different color material densities are used for the same color system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Recording head 20 Chip (ink discharge part) 30 Chip plate 40 Ink tank 50 Ink channel 200 Carriage 310 Space in which carriage 200 is reversed 320 Nozzle 330 Shielding plate P Printing paper

Claims (20)

[Claims] 1. An ink jet recording apparatus that generates heat energy when ejecting ink and performs recording using an ink ejection unit corresponding to a plurality of colors, wherein the ink ejection unit corresponding to the plurality of colors includes: A dark ink ejection unit for ejecting a relatively high-density dark ink of the same color for at least two of the plurality of colors, and a light-ink ejection unit for ejecting a relatively low-density light ink; An ink-jet printing method according to claim 1, wherein the arrangement order of the ink ejection units corresponding to the colors in the predetermined direction is an arrangement order in which at least one other ink ejection unit is arranged between the light ink ejection units corresponding to the two colors. Recording device. 2. An ink jet recording apparatus that generates heat energy when ejecting ink and performs recording using an ink ejection unit corresponding to a plurality of colors, wherein the ink ejection unit corresponding to the plurality of colors is A dark ink ejection unit for ejecting a relatively high-density dark ink of the same color for at least two of the plurality of colors, and a light-ink ejection unit for ejecting a relatively low-density light ink; An ink jet recording apparatus according to claim 1, wherein the order of arrangement of the ink ejection sections corresponding to the colors in the predetermined direction is such that the light ink ejection sections corresponding to the two colors are arranged so as not to be adjacent to each other. 3. The plurality of colors are cyan (C), magenta (M), black (Bk), and yellow (Y), and the ink ejecting unit includes the cyan (C), magenta (M), For at least two colors of black (Bk) and yellow (Y), cyan (C) and magenta (M), the ink jet printer has the dark ink discharge section and the light ink discharge section, and the ink discharge sections are arranged in a predetermined direction. The order is between a light cyan (LC) ink discharge section and a light magenta (LM) ink discharge section, a dark cyan (C) ink discharge section, a dark magenta (M) ink discharge section, a black (Bk) ink discharge section and 3. The ink jet recording apparatus according to claim 1, wherein at least one of the yellow (Y) ink ejection units is arranged in the arrangement order. 4. The arrangement order of said ink ejection sections in a predetermined direction is as follows: black (Bk) ink ejection sections, light cyan (L
C) an ink discharge section, a dark cyan (C) ink discharge section, a light magenta (LM) ink discharge section, a dark magenta (M) ink discharge section, and a yellow (Y) ink discharge section in this order. Item 4. An ink jet recording apparatus according to item 3. 5. The ink discharge section is arranged in a predetermined direction in a black (Bk) ink discharge section, a light magenta (LM) ink discharge section, a dark magenta (M) ink discharge section, and a light cyan (LC) ink discharge. 4. The ink jet recording apparatus according to claim 3, wherein the order of the image forming unit, the dark cyan (C) ink discharging unit, and the yellow (Y) ink discharging unit is in that order. 6. An ink jet recording apparatus that performs recording using a plurality of ink ejection units that generate thermal energy when ejecting ink, wherein the plurality of ink ejection units include a black (Bk) ink ejection unit, A light magenta (LM) ink discharge section, a dark magenta (M) ink discharge section, a light cyan (LC) ink discharge section,
It has a dark cyan (C) ink ejection section and a yellow (Y) ink ejection section, and the arrangement order of the ink ejection sections in a predetermined direction is the light magenta (LM) ink ejection section and the light cyan (LC)
An ink jet recording apparatus according to claim 1, wherein the ink ejection unit and the yellow (Y) ink ejection unit are arranged so as to be separated from each other so as not to be adjacent to each other. 7. An ink jet recording apparatus which performs recording using a plurality of ink ejection units that generate thermal energy when ejecting ink, wherein the arrangement order of the plurality of ink ejection units in a unit direction is a unit time. The average ink ejection amount per unit time is smaller than the ink ejection unit having a larger average ink ejection amount per unit time between the ink ejection units having a larger average ink ejection amount per unit time. Inkjet recording device. 8. An ink jet recording apparatus which performs recording using a plurality of ink ejection units that generate thermal energy when ejecting ink, wherein the arrangement order of the plurality of ink ejection units in a unit direction is a unit time. The average ink consumption per unit time is smaller than the average ink consumption per unit time between the ink ejection units having the higher average ink consumption per unit time. Inkjet recording device. 9. An ink jet recording apparatus which performs recording using a plurality of ink ejection units that generate thermal energy when ejecting ink, wherein the arrangement order of the plurality of ink ejection units in a unit direction is a unit time. The average ink heat generation amount per unit time is smaller than the ink discharge unit with the higher average ink heat generation amount per unit time between the ink discharge units with the higher average ink heat generation amount. Inkjet recording device. 10. The plurality of ink ejecting units include cyan (C), magenta (M), yellow (Y), black (Bk), light cyan (LC), and light magenta (LM).
An ink ejection unit that ejects each color ink, wherein the ink ejection unit has a large average ink ejection amount per unit time, the ink ejection unit has a large average ink consumption amount per unit time, or the average ink heating value. The ink jet recording apparatus according to any one of claims 7 to 9, wherein the ink ejection units having a large number of inks are the light magenta (LM) ejection unit and the light cyan (LC) ejection unit. 11. The ink jet recording apparatus according to claim 1, wherein each of the ink ejection units includes a thermal energy generator that generates thermal energy. 12. An ink jet recording method for performing recording using an ink ejection unit corresponding to a plurality of colors, which generates heat energy when ejecting ink, wherein the ink ejection unit corresponding to the plurality of colors is A dark ink ejection unit for ejecting a relatively high-density dark ink of the same color for at least two of the plurality of colors, and a light-ink ejection unit for ejecting a relatively low-density light ink; An ink-jet printing method according to claim 1, wherein the arrangement order of the ink ejection units corresponding to the colors in the predetermined direction is an arrangement order in which at least one other ink ejection unit is arranged between the light ink ejection units corresponding to the two colors. Recording method. 13. An ink jet recording method for performing recording using an ink ejection unit corresponding to a plurality of colors, wherein the ink ejection unit corresponding to the plurality of colors generates thermal energy when ejecting ink. A dark ink ejection unit for ejecting a relatively high-density dark ink of the same color for at least two of the plurality of colors, and a light-ink ejection unit for ejecting a relatively low-density light ink; The ink jet recording method according to claim 1, wherein the order of arrangement of the ink ejection units corresponding to the colors in the predetermined direction is an arrangement order in which the light ink ejection units corresponding to the two colors are arranged apart from each other so as not to be adjacent to each other. 14. The plurality of colors are cyan (C), magenta (M), black (Bk), and yellow (Y), and the ink ejecting unit includes the cyan (C), magenta (M), For at least two colors of black (Bk) and yellow (Y), cyan (C) and magenta (M), the ink jet printer has the dark ink discharge section and the light ink discharge section, and the ink discharge sections are arranged in a predetermined direction. The order is between a light cyan (LC) ink discharge section and a light magenta (LM) ink discharge section, a dark cyan (C) ink discharge section, a dark magenta (M) ink discharge section, a black (Bk) ink discharge section and 14. The ink jet recording method according to claim 12, wherein the arrangement order is such that at least one of the yellow (Y) ink ejection units is arranged. 15. An ink discharge section arranged in a predetermined direction includes a black (Bk) ink discharge section, a light cyan (LC) ink discharge section, a dark cyan (C) ink discharge section,
15. The ink jet recording method according to claim 14, wherein a light magenta (LM) ink discharge unit, a dark magenta (M) ink discharge unit, and a yellow (Y) ink discharge unit are arranged in this order. 16. The ink discharge units are arranged in a predetermined direction in a black (Bk) ink discharge unit, a light magenta (LM) ink discharge unit, a dark magenta (M) ink discharge unit, and a light cyan (LC) ink discharge. 15. The ink jet recording method according to claim 14, wherein the order is first, a dark cyan (C) ink ejection section, and a yellow (Y) ink ejection section. 17. An ink jet recording method for performing recording using a plurality of ink ejection units that generate thermal energy when ejecting ink, wherein the plurality of ink ejection units include a black (Bk) ink ejection unit, A light magenta (LM) ink discharge section, a dark magenta (M) ink discharge section, a light cyan (LC) ink discharge section,
It has a dark cyan (C) ink ejection section and a yellow (Y) ink ejection section, and the arrangement order of the ink ejection sections in a predetermined direction is the light magenta (LM) ink ejection section and the light cyan (LC)
An ink-jet recording method, wherein the ink discharge units and the yellow (Y) ink discharge units are arranged so as to be separated from each other so as not to be adjacent to each other. 18. An ink jet recording head that generates thermal energy when ejecting ink and has an ink ejection unit corresponding to a plurality of colors, wherein the ink ejection unit corresponding to the plurality of colors is one of the plurality of colors. For at least two colors, it has a dark ink discharge unit that discharges a relatively high-density dark ink of the same color system and a light-ink discharge unit that discharges a relatively low-density light ink. An ink jet recording head according to claim 1, wherein the arrangement order of the ink ejection units in a predetermined direction is an arrangement order in which at least one other ink ejection unit is arranged between the light ink ejection units corresponding to the two colors. 19. An ink jet recording head that generates thermal energy when ejecting ink and has an ink ejection unit corresponding to a plurality of colors, wherein the ink ejection unit corresponding to the plurality of colors is one of the plurality of colors. For at least two colors, it has a dark ink discharge unit that discharges a relatively high-density dark ink of the same color system and a light-ink discharge unit that discharges a relatively low-density light ink. An ink jet recording head according to claim 1, wherein the arrangement order of the ink ejection units in a predetermined direction is such that the light ink ejection units corresponding to the two colors are arranged apart from each other so as not to be adjacent to each other. 20. An ink jet recording head having a plurality of ink ejection units that generate thermal energy when ejecting ink, wherein the plurality of ink ejection units are a black (Bk) ink ejection unit, a light magenta (LM) ) Ink ejection section, dark magenta (M) ink ejection section, light cyan (LC) ink ejection section,
It has a dark cyan (C) ink ejection section and a yellow (Y) ink ejection section, and the arrangement order of the ink ejection sections in a predetermined direction is the light magenta (LM) ink ejection section and the light cyan (LC)
An ink jet recording head according to claim 1, wherein the ink ejection section and the yellow (Y) ink ejection section are arranged so as to be separated from each other so as not to be adjacent to each other.