KR100235530B1 - Ink jet recording apparatus - Google Patents

Abstract

An inkjet printer which charges ink particles ejected from a jet nozzle, deflects the charged ink particles by a deflection electrode, and executes printing of high speed and high quality characters on a recording medium. In order to provide an apparatus in which an appropriate correction amount is required by using a small amount of ink particles in determining a correction value or a correction coefficient, a nozzle for ejecting ink particles, a means for generating a recording signal according to the recording information, and charging the ink particles And a deflection electrode for deflecting the emergency direction of the charged ink particles, and moving the recording medium relatively in a direction substantially perpendicular to the deflection direction of a letter symbol made of a dot matrix in the deflection direction of the ink particles. An inkjet recording apparatus for performing printing, comprising: particles of interest for correcting a recording signal and the attention The dot matrix above and below the dot matrix to which ink particles are flying before and after the particles has a correction value or correction coefficient for correcting the recording signal of the particles of interest by the charged state of the ink particles or the presence or absence of printing. It was.

By doing this, even if the printing distance is long, the effect that the high-quality printing which reduces the printing distortion at the time of high speed printing is possible with a small correction coefficient is obtained.

Description

Inkjet recorder

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet printer which charges ink particles ejected from an ejection nozzle, deflects the charged ink particles by a deflection electrode, and executes printing at high speed and high quality on a recording medium.

In an inkjet printer, there is a problem in that printing distortion occurs in which the target printing position and the actual printing position are shifted, resulting in deterioration in printing quality. It is known that printing distortion occurs due to mutual interference between ink particles such as air resistance and electrostatic force.

As a technique of reducing printing distortion, there exist some which were described in Unexamined-Japanese-Patent No. 3-55262, for example. In the inkjet printer described in this publication, the charge correction amount for the ink droplets is obtained by calculating the charge correction amount for the ink droplets according to the printing pattern of the ink droplets in the vicinity of the ink droplets and the printing density of the ink droplets located away from the ink droplets. Execution of the correction is disclosed. In addition, Japanese Patent Laid-Open No. 63-145041 discloses performing correction by taking into consideration each of two drops immediately before the ink drop and four drops, eight drops, and twelve drops of the ink drop. .

In Japanese Patent Application Laid-Open No. 3-55262, ink droplets in the vicinity of the ink droplets of interest require printing density of 10 drops in the vicinity and far (not clearly disclosed how far away) are used. It requires computation time. In addition, in Japanese Patent Laid-Open Publication No. 63-145041 digestion, but provides the amount of memory compared to the above-described prior art, it is still not possible for the correction factors have to request all of the 27 ^kinds and the correction coefficient there is a problem that it takes time . In addition, among the ink droplets that classify the correction coefficient, the high-quality printing cannot be executed because the influence of the ink droplets that fly to the same emergency paper is not considered in the printing position of the ink ink droplets among the ink droplets that fly behind the ink droplets. there is a problem.

It is an object of the present invention to provide an inkjet recording apparatus in which an appropriate correction amount is required using less ink particles in determining a correction value or correction coefficient for correcting a recording signal.

1 is a diagram showing an emergency state of an ink particle of interest and an ink particle used for determining a correction coefficient;

2 is a view showing dot positions of ink particles of interest and ink particles used for determining a correction coefficient;

3 is a diagram showing the emergency state of the ink particles of interest and the ink particles used for determining the correction coefficient at the time of thermal change;

4 shows dot positions of ink particles of interest and ink particles used for determining a correction coefficient at the time of thermal change;

5 is a diagram showing emergency states of ink particles of interest in the case of having dummy particles at the time of thermal change and ink particles used for determining the correction coefficient;

6 is a diagram showing dot positions of ink particles of interest and ink particles used for determining a correction coefficient when there are dummy particles at the time of thermal change;

7 is a view showing the emergency state of the ink particles when the dummy particles are provided for each dot;

8 is a view showing dot positions of ink particles of interest when ink having dummy particles every dot and ink particles used for determining a correction coefficient;

9 is a diagram showing emergency states of the ink particles of interest when used in two stages and the ink particles used for determining the correction coefficient;

10 is a view showing dot positions of ink particles of interest and ink particles used for determining a correction coefficient when they are composed of two stages;

11 is a diagram showing the emergency state of the ink particles of interest when printing only one stage and the ink particles used for determining the correction coefficient;

12 is a view showing dot positions of ink particles of interest when ink printing only one step and ink particles used for determining a correction coefficient;

FIG. 13 is a diagram showing the emergency state of the ink particles of interest when passing over the heat when printing only one stage and the ink particles used for determining the correction coefficient;

14 shows dot positions of the ink particles of interest in the first column and the second column and the ink particles used for determining the correction coefficient;

15 is a view showing the emergency state of the ink particles when using the dummy particles when printing only the first stage;

FIG. 16 shows dot positions of ink particles of interest when ink is used for printing only one stage and ink particles used for determining a correction coefficient;

17 is a diagram showing a procedure of correction of an ink particle of interest;

18 is a view showing a state of a trick between three dots.

Fig. 19 is a diagram showing a schematic configuration of the ink jet recording apparatus of the present invention.

In order to achieve the above object, it comprises a nozzle for injecting ink particles, means for generating a recording signal according to the recording information, a charging electrode for charging the ink particles and a deflection electrode for deflecting the emergency direction of the charged ink particles, In the case of printing multiple character symbols and the like composed of several dot matrices in the deflection direction of the ink particles, the ink particles are deflected one by one while changing the steps by the dot matrix for each step, and are generally perpendicular to the deflection direction. 1. An inkjet recording apparatus which relatively moves a recording medium in a direction and performs printing, wherein the inkjet recording device has a deflection direction with respect to a dot matrix to which ink particles flying back and forth between the particles of interest correcting the recording signal and the particles of particles of interest correcting the recording signal are printed. The recording of the target particles by the charged state of ink particles or the presence or absence of printing on the dot matrix above and below For one will have a correction value or a correction coefficient for correcting.

EMBODIMENT OF THE INVENTION Hereinafter, the Example of this invention is described using drawing.

19 shows an example of a schematic configuration of an ink jet recording apparatus to which the present invention is applied. The ink in the ink tank 1 is pressurized by the supply pump 2 and regulated to a predetermined pressure by the pressure regulating valve 3 before being supplied to the injection nozzle 4. An electrostriction element 5 is provided inside the injection nozzle 4, and the ink particles 7 are injected from the injection nozzle 4 by driving the electrostriction element 5 by the excitation source 6. To separate and spray regularly.

The ink particles 7 regularly jetted from the injection nozzle 4 are charged by the charging station 8 when passing through the charging electrode 8. The charging amount is determined by the recording signal generating means 9 controlling the recording signal applied to the charging electrode 8 according to the printing pattern according to the printing information input from the outside. Then, the ink particles 7 charged with a predetermined amount of charge when passing through the charging electrode 8 also fly between the upper deflection electrode 10 and the lower deflection electrode 11. The upper deflection electrode 10 is maintained at a high voltage by the high voltage power supply 12 and the lower deflection electrode 11 is grounded. The ink particles 7 are deflected in the emergency direction by receiving a deflection force according to the amount of charge in the electrostatic field formed between the upper deflection electrode 10 and the lower deflection electrode 11. Meanwhile, in front of the ink particle 7 in the emergency direction, the recording medium 13 is moving in the A direction at a predetermined speed, and the ink in which the emergency direction is deflected by the upper deflection electrode 10 and the lower deflection electrode 11. Particles 7 are sequentially landed on the recording medium 13 one by one. As a result, predetermined character symbols or the like can be printed on the recording medium 13. The written characters and the like are composed of dot matrices. Printing control of the longitudinal direction of the dot matrix is performed by controlling the deflection amount of the ink particles 7 by the above-mentioned deflection electrodes arranged above and below, and the horizontal direction moves the recording medium 13 in the direction of arrow A. FIG. By controlling the amount of movement. Further, the ink particles (hereinafter referred to as dummy particles) not involved in recording and the ink particles not used for printing are not charged by the charging electrode 8, so they go straight and are recovered by the garter 14 and the ink tank 1 ) And reuse.

The case of a multi-stage factor which simultaneously prints a multi-stage character symbol made of a plurality of dot matrices in the deflection direction of the ink particles will be described. In the case of the printing method of printing the ink particles one by one while changing the steps of the dot matrix for each step, the shift between the predetermined printing position and the actual printing position with respect to the ink particles of interest (hereinafter referred to as printing distortion). The behavior of each ink particle in the case of becoming 25% or more of the dot diameter was examined. As a result, an ink particle flying one front of the ink ink particle, an ink particle flying one back of the ink ink particle, and a dot matrix separated from the dot matrix in which the ink ink particle is printed in the direction of deflection in two directions and in front of the ink ink particle Ink particles flying through the dot matrix away from the dot matrix in which the ink ink particles are printed in the deflecting direction and ink particles flying out in front of the ink ink in the deflection direction and in the deflection direction in the dot matrix in which the ink ink particles are printed It has been found that printing shift occurs due to the influence of ink particles that are printed on the dropped dot matrix and fly behind the ink particles of interest. Therefore, by determining the conditions of the correction coefficient according to the charged state or presence or absence of the ink particles, and correcting the recording signal of the ink particles of interest, the factor distortion can be 25% or less of the dot diameter, and the operation conditions are reduced. There is an effect of obtaining a high quality print.

First, a case in which the dot matrix constituting one character is 7 dots long and 5 dots horizontal, and prints three characters in the deflection direction (hereinafter referred to as three stage printing) will be described.

The configuration of the dot matrix in the three-stage printing is shown in FIG. The printing method is to print at the dot positions of 1 column, 1 column and 1 row at the first time, to the dot positions of 1 column, 2 column and 1 row at the second time, and to the dot positions of 1 column, 3 column and 1 row at the third time. The fourth position is printed at the dot position in one column, one column and the second row, the fifth is printed at the dot position in the first column, two columns and two rows, and the sixth position is printed at the dot position in the first column, three columns and two rows. Similarly, the printing is executed one by one dot on the dot matrices arranged in the deflecting direction and starting from the lowest dot of each dot matrix.

When the printing of the first column is finished, the second and subsequent rows are printed by the same method as the first column. FIG. 1 shows the emergency state of each ink particle printed in two columns, one row, three rows and six rows. The ink particles 32 used to determine the correction coefficients for the ink particles 31 to be printed in two stages and four rows are indicated by diagonal lines. 2 shows dot positions at which the ink particles 32 of interest and the ink particles 32 used for determining the correction coefficient thereof are printed. In this embodiment, the ink particles 32 used for determining the correction coefficient are printed in two columns, two rows, two columns, three rows, four columns, three columns, four rows, and five columns. The correction coefficient of the ink particle of interest 31 is determined by the presence or absence of a factor and the amount of charge.

Next, the procedure for correcting the recording signal will be described. Fig. 17 shows the procedure. In dominant step 201, the recording signal Vn of the ink particles of interest corresponding to the dot position is obtained according to the printing pattern. For example, Vn becomes as follows. If the dot position is shifted one direction in the deflection direction such as 70 (V) for the first row, 80 (V) for the second row, and 90 (V) for the first row, the 10 (V) is added to the recording signal. . However, since two dots of space are provided between the first and second stages, the printing is executed, so that the second row of the first row is 160 (V), and the second row of the second row is 170 (V). Similarly, the third stage is also provided with space for two dots between the second stage and the third stage, so that the printing is executed. Thus, the first stage of the third stage is 250 (V), and the third stage of the second stage is 260 (V). Therefore, when the second stage and the fourth row are the ink particles of interest, Vn is 190 (V).

Next, in step 202, the charge distortion is corrected. The charge distortion occurs because the predetermined amount of charge cannot be obtained due to the influence of the preceding ink particles during the charging of the ink particles of interest 31, and causes the distortion. Here, the influence of the charge amount of the ink particles flying in front of and before the two of the ink particles of interest is taken into consideration. (As a result of the experiment, the influence of the charge amount of three or more ink particles is less than 1%. It is confirmed that it can be ignored). Therefore, the recording signal of the ink particles of interest using the recording signal Vn-1 before the correction of the ink particles flying in front of the two, the recording signal Vn-2 before the correction of the ink particles flying in the front and the charge distortion correction coefficients α and β The charge distortion of Vn is corrected and Vn 'is obtained (where α and β are values of α = 0.2 and β = 0.05, for example). The ink particles which fly to the front of the two ink particles 31 of interest are the ink particles printed in three columns and three rows, but are not printed here, and thus Vn-1 = 0 (V). Next, the ink particles flying in front of one of the ink particles of interest 31 are ink particles printed in one column and four rows, and Vn-2 = 100 (V). Therefore, the recording signal Vn 'of the target ink particle after charge distortion correction becomes Vn' = 210 + 100 x 0.05 = 215 (V).

Next, in step 203, the recording signal Vn 'is corrected using the correction coefficient γp previously obtained corresponding to the presence or absence of the ink particle printing (character pattern) to obtain V', and V 'is used as the recording signal of the ink particle of interest. do. Here, it is necessary to make sure that the dot position of the ink particle of interest 31 does not change with the state of the ink particle 32. Therefore, for example, γp is determined so that printing distortion is within about 30% of the dot diameter (about 0.35 mm) with respect to the dot position of the ink particle of interest 31 in accordance with the state of the ink particles 32.

Γp was 0.98 in this embodiment, which is only printed in one column and four rows of the ink particles 32. Therefore, the V 'of the target particle 32 is set to V' = 215 (V) x 0.98 = 210.7 (V), and this V 'is used as the final recording signal of the target ink particle 31. The same may be performed for each ink particle. In addition, each correction coefficient can be recorded in a table form in the memory section of the control device in advance for each condition and read as necessary to shorten the processing time.

By correcting the ink particles of interest as described above, even when the printing distance is long, high-speed, high-quality characters can be obtained with a small correction coefficient.

Next, in FIG. 1, when the ink particles of the third column and the fifth row are the ink particles of interest, three-stage 2 which is an adjacent dot of the printing matrix in addition to the adjacent ink particles (two columns and four rows and one row and five rows) in flight. Using the ink particles in rows, three columns, three rows, and three columns, five rows, the correction coefficient is determined in the above-described procedure by the presence or absence of printing of the ink particles, charge amount, and the like.

In addition, when the ink particles to be printed in one column and four rows are used as the ink particles, the ink particles for determining the correction coefficient are divided into one row, two rows, one row, three rows, three rows, four rows, and five rows. It is calculated | required by the presence or absence of the printing of the ink particle to be printed, and each charge amount. In addition, the method of obtaining the correction coefficient concretely is based on the method of FIG. 17 mentioned above.

FIG. 3 shows the emergency state of the ink particles printed in the third column, the fourth row in the first column, and the second column, the third row in the second column, and the arrangement of the dart matrix in FIG.

When the ink particles to be printed in the first column and the first row of the second column are the ink particles 81 of interest, the ink particles 82 used to obtain the correction coefficient thereof are indicated by diagonal lines. The ink particles 82 in this embodiment are printed in three rows of seven rows in one row, two rows in one row in the second row, and one row in the second row, and the ink particles 82 are attracted by the presence or absence of printing of the ink particles 82, the amount of charge, and the like. The correction amount of the ink particles 81 is determined.

Next, when the ink particles printed in the second column, second column and second row are the ink particles of interest, the ink particles used to obtain the correction coefficient are as follows. Ink particles of interest in the second column, second column, and second row in the presence or absence of charging of ink particles to be printed in the second column, second row, first row, second row, first row, second row, third row, second row, and second row, second row, third row. The correction factor of is obtained. The method for obtaining the correction coefficient and the like is carried out in the above-described procedure.

When the ink particles in the first column, third column and seventh row are used as the ink particles, the ink particles used for correction are the first column, third row, five rows, the first row, third row, six rows, the first row, two rows, seven rows, and the second row, first row. Use line 1 In other words, the correction coefficients of the ink particles in the first column, third column and seventh row, which are the ink particles of interest, are determined by the presence or absence of the ink particle factor used for the correction and the charge amount.

Next, when the ink particles to be printed in the first column, the second column and the seventh row are the ink particles of interest, the ink particles used to obtain the correction coefficient are as follows. The ink particles printed in the first column, the second column, the fifth row, the first column, the second column, the sixth row, the first column, the first column, the seventh row, and the first column, the third column, the seventh row are used for correction, The correction factor is determined.

When the ink particles to be printed in the second column, the third column and the first row are the ink particles of interest, the ink particles used in the correction coefficient are as follows. The ink particles used for correction are printed in the second column, the second column, one row, the second column, the first column, the second column, and the second column, the third column, the second column. Is obtained.

When the ink particles to be printed in the first column and second row of the second column are the ink particles of interest, the ink particles used to obtain a correction coefficient are as follows. The ink particles used for correction are printed in the first row, the first row, the second row, the third row, the first row, the second row, the second row, the second row, and the second column, the first row, the third row. By this, the correction coefficient of the ink particles of interest is determined.

As described above, according to the present invention, the recording signal is generated by the charged state of the ink particles in the direction of the attention of the ink particles to be printed on each dot matrix, and the charged particles of the ink particles in the up and down dot matrix in the direction of deflection of the ink ink particles. By determining the correction coefficient of, it is possible to obtain high speed and high quality characters even when the printing distance is long. Further, if the ink particles further classify the condition, for example, ink particles flying two fronts of the ink particles and ink particles flying two back of the particles of interest, a higher quality factor is obtained, but the correction coefficient is obtained. Conditional classification is expanded.

Next, the case where dummy particles exist between the ink particles of the first row and the second row will be described.

FIG. 5 shows the emergency state of the ink particles to be printed in the first column, third row, fourth row, second row, third row, and second row, and there is a case where one dummy particle 23 exists between the first and second row of ink particles. It is shown.

The reason for providing the dummy particles in addition to the ink particles corresponding to the printing dots is that the dummy particles are recovered by the garter 14 without being normally charged, and the ink particles corresponding to the printing dots adjacent to the ink dots of interest have the greatest effect. In order to reduce, the number of ink particles used for correcting the ink particles of interest can be reduced.

In Fig. 5, the ink particles 88 used to obtain the correction coefficients for the ink particles 87 of interest printed in the third column, seventh row of the first column are shown by diagonal lines. FIG. 6 shows dot positions at which the ink particles 87 and ink 88 of interest are printed. In this embodiment, the ink particles 88 used to obtain the correction coefficient are printed in the first column, third column, fifth row, the first column, third column, sixth row, and the first column, second column, seventh row. The correction coefficient of the ink particles of interest 87 is determined by the presence or absence of the printing of the ink particles 88 and the amount of charge.

The above example is the case where the ink particles immediately before the dummy particles are the ink particles, but the ink particles behind the dummy particles are the ink particles, that is, when the first column and the first row of the second column are the ink particles, the correction coefficient is corrected. The ink particles used to determine the use of the ink particles to be printed in the second column, first column, the second row, the second column. The correction coefficient of the ink particles of interest is determined by the presence / absence of the ink particle printing and the amount of charge.

In the above-described embodiment, the case where there is one dummy particle 23 between the ink particles in the first row and the second row is explained, but there is no problem in obtaining the correction coefficient even if there are two or more dummy particles 23. .

According to the present invention as described above, if there are dummy particles between the rows, the conditional classification of the correction coefficients with only the ink particles is performed in the same column as the target particles to be printed. We can get high quality character.

Next, a case of printing (hereinafter referred to as thinning) while placing dummy particles between ink particles involved in printing will be described. However, when thinning is performed as in the present embodiment, the printing speed decreases.

7 shows the emergency state of the ink particles to be printed in two rows, two rows to five columns, and dummy particles 23 are inserted one by one between the ink particles. 8 shows printing positions of the ink particles of interest and the ink particles for obtaining the correction coefficients thereof, and the ink particles used to obtain the correction coefficients of the ink particles 41 (?) Printed in two columns and four rows ( 42 is indicated by an oblique line. In this embodiment, the ink particles 42 used for the correction of the ink particles of interest 41 are used to be printed in two columns, two rows, three rows, and five columns. The correction coefficient of the ink particles 41 of interest is determined by the method of specifying the presence or absence of the printing of the ink particles 42 and the charging amount.

As described above, according to the present invention, when thinning is performed, high quality characters can be obtained with a small correction coefficient even when the printing distance is long, without considering ink particles flying back and forth that were considered before and without thinning. . Further, when the ink particles further classify the condition, for example, the ink particles flying before and after the target particles, the number of correction coefficients are increased, and a higher quality factor is obtained, but the time for obtaining the correction coefficients is increased.

Next, the case where the dot matrix constituting one character is 7 dots vertically and 5 dots horizontally and prints two characters in the deflection direction (hereinafter referred to as two-stage printing) will be described.

The configuration of the dot matrix in the present embodiment is in a state where there is no third stage in the third stage in FIG. The printing method of printing is printing at the dot position of 1 column, 1 column, 1 row at the first time, printing at the dot position of 1 column, 2 column, 1 row at the second, and printing at the dot position of 1 column, 1 column, 2 rows at the third. In order to print at the dot position of the first column, the second stage and the second row, and to the dot position of the first column, the first stage and the third row, the fourth matrix is printed one by one dot in the dot matrix arranged in the deflection direction. Then, printing starts from the lowest dot of each dot matrix. When the printing of the first column is finished, the second and subsequent rows are printed by the same scanning method as the first column.

Fig. 9 shows the emergency state of the ink particles to be printed in the first to the second to seventh rows, and the ink particles to be printed in the second to the fourth row as the ink particles 37 to be used for obtaining the correction coefficient. Particles 38 are indicated by diagonal lines. 10 shows dot positions at which the ink particles 37 and the ink particles 38 are to be printed. The ink particles 38 used to obtain the correction coefficient in this embodiment are printed in two columns, two rows, three rows, four rows, five rows, and five rows. The correction coefficient of the ink particle of interest 37 is determined by the presence or absence of printing of the ink particles 38 and the amount of charge.

Next, when the ink particles to be printed in the first row and the third row are the ink particles of interest, the ink particles used to obtain the correction coefficients are the first row, the second row, the first row, the third row, the second row, the fourth row, and the first row. It becomes an ink particle printed on line 5. The correction coefficient of the ink particles of interest (the ink particles in one column and three rows) is determined by the presence or absence of printing of the ink particles and the amount of charge.

As described above, according to the present invention, by limiting the ink particles for obtaining the correction coefficient similar to the three-stage printing, it is possible to obtain high-speed and high-quality characters even when the printing distance is long. Even if there are dummy particles between the thinnings, the correction coefficient may be obtained in the same manner as in the three-stage factor. Here, an example of printing two-stage and three-stage printing is described. However, in the case of four-stage printing or more, high-speed and high-quality printing is possible by specifying ink particles for obtaining a correction coefficient. Similarly, even when the dot metrics constituting the character are changed, by specifying the ink particles for obtaining the correction coefficient, the printing distance is specified, so that printing at high speed and high quality is possible even when the printing distance is long.

Next, the ink particles for obtaining the correction coefficient in the case where the dot metrics constituting one character are 7 dots vertically and 5 dots horizontally and one character is printed in the deflection direction (hereinafter referred to as one-stage factor) are described. It explains whether to select.

The configuration of the dot matrix in the present embodiment uses only the first stage without the second stage and the third stage in FIG. The printing method of printing is printing at the dot position of 1 column and 1 row at the first time, printing to the dot position of 1 column, 1 column and 2 rows at the second time, and printing to the dot position of 1 column, 1 column and 3 rows at the third. In order to print at the dot positions of 1 row, 1 column and 4 rows at the 4th time, and to the dot positions of 1 column, 1 column, 5 rows at the 4th time, the dot matrix is sequentially ordered one dot in the deflection direction from the lowest dot position of the dot matrix. Print When the printing of the first column is finished, the second and subsequent rows are printed by the same scanning method as the first column.

FIG. 11 shows the emergency state of the ink particles printed in 1 column 1 to 1 column 7 lines, and the ink particles 62 used for conditional classification of the correction coefficients of the ink particles 61 of interest printed in 1 column 5 lines. ) Is indicated by an oblique line. FIG. 12 shows dot positions at which the ink particles 61 and the ink particles 62 are to be printed. The ink particles 62 of this embodiment are printed in one row, one row, one row, two rows, one row, three rows, one row, four rows, one row, six rows, and one row, seven rows. The correction coefficient of the ink particle of interest 61 is determined by the presence or absence and the amount of charge.

FIG. 13 shows the emergency state of the ink particles to be printed in the first column of the first column, the first row to the first column of the second column, and used in the conditional classification of the correction coefficients of the ink particles 63 to be printed in the first column of the second column. Ink particles 64 to be shown are indicated by diagonal lines. 14 shows dot positions at which the ink particles 63 and the ink particles 64 are to be printed. In this embodiment, the ink particles 64 have 1 row 1 row 6 rows, 1 row 1 row 7 rows, 2 rows 1 row 1 rows, 2 rows 1 row 2 rows, 2 rows 1 row 4 rows, 2 rows 1 row 5 And the correction coefficients of the ink particles of interest 63 are conditionally classified by the presence or absence of the printing of the ink particles 64.

As described above, according to the present invention, even when ink particles affecting the printing distortion of the ink particles of interest are considered and the printing distance is long due to small conditional classification, high-speed and high-quality characters can be obtained. In addition, if the ink particles which further classify the conditions are obtained, a higher quality factor is obtained, but the conditional classification of the correction coefficient is expanded.

Next, the case where thinning is performed is demonstrated.

FIG. 15 shows the emergency state of the ink particles to be printed in one column, one row to one column, seven rows, and corrects the ink particles 71 to be printed in one row and five rows with dummy particles 23 between the ink particles. The ink particles 72 used to obtain the coefficients are indicated by diagonal lines. Fig. 16 shows dot positions at which the ink supplier 71 and the ink particles 72 are printed. The ink particles 72 in this embodiment are printed in one row, three rows, one row, four rows, and one row and six rows, and the ink particles 71 are attracted by the presence or absence of the printing of the ink particles 72 and the charge amount. The correction factor of is obtained.

As described above, according to the present invention, when thinning is performed in obtaining a correction coefficient, correction is performed considering only ink particles affecting the printing distortion of the ink particles of interest, and high-speed and high-quality characters even when the printing distance is long. Can be obtained.

According to the present invention, even when the printing distance is long, it is possible to achieve a correction factor with a small number of high quality printing factors in which the printing distortion is reduced during high speed printing.

Claims (9)

A nozzle for injecting ink particles, a means for generating a recording signal according to recording information, a charging electrode for charging the ink particles, and a deflection electrode for deflecting the emergency direction of the ink particles charged with the electrodes; In order to print the character symbols and the like of a plurality of dot matrices in the deflecting direction, the ink particles are deflected one by one while changing the steps with the dot matrix for each step, and recorded in a direction substantially perpendicular to the deflection direction. An ink jet recording apparatus for relatively moving a medium and performing printing, wherein ink is recorded above and below ink particles flying back and forth between the ink ink particles for correcting the signal and the ink ink particles and the ink ink particles in the printing stage. Correction value or correction coefficient of the ink particles of interest according to the state of charge of the particles or the presence or absence of a factor Inkjet recording apparatus, characterized in that for determining. A nozzle for injecting ink particles, a means for generating a recording signal according to recording information, a charging electrode for charging the ink particles, and a deflection electrode for deflecting the emergency direction of the ink particles charged with the electrodes; In order to print the character symbols and the like of a plurality of dot matrices in the deflecting direction, the ink particles are deflected one by one while changing the steps with the dot matrix for each step, and recorded in a direction substantially perpendicular to the deflection direction. An inkjet recording apparatus for relatively moving a medium and performing printing, The charged state or printing of the ink particles which continuously fly back and forth before and after the target ink particles for correcting the recording signal and the ink particles which are printed on the continuous dots up and down with respect to the target ink particles in the dot matrix to which the target ink particles are printed An inkjet recording apparatus characterized by obtaining a correction value or a negative coefficient for correcting a recording signal of the ink ink supplier with or without the ink. A nozzle for injecting ink particles, signal generating means for generating a recording signal according to recording information, a charging electrode for charging the ink particles, and a deflection electrode for deflecting the emergency direction of the ink particles charged with the charging electrode; In order to print the multi-letter characters and so on in the direction of particle deflection, the ink particles are deflected one by one while changing the steps with dot matrices for each step, and are avoided in a direction substantially perpendicular to the deflection direction. 1. An inkjet recording apparatus for relatively moving a recording medium and performing printing, wherein the ink particles for correcting a recording signal are printed on a dot matrix separated by two in a deflecting direction from a dot matrix to be printed, and also flying in front of the ink ink particles. The deflection direction in the dot matrix where the first ink particles and the target ink particles are printed The recording signal by the presence or absence of the charged state or printing of the second ink particles which are printed on the dot matrix further separated from each other and which fly in front of the ink particles of interest and which fly between the first ink particles and the ink particles of interest And a correction value or correction coefficient for correcting the difference. A nozzle for injecting ink particles, signal generating means for generating a recording signal according to recording information, a charging electrode for charging the ink particles, and a deflection electrode for deflecting the emergency direction of the ink particles charged with the charging electrode; In order to print the multi-letter characters and so on in the direction of particle deflection, the ink particles are deflected one by one while changing the steps with dot matrices for each step, and are avoided in a direction substantially perpendicular to the deflection direction. An inkjet recording apparatus for relatively moving a recording medium and performing printing, comprising: ink particles flying one front of an ink particle for correcting a recording signal, ink particles flying one back of the ink ink particle, and the ink ink particle Is printed on the dot matrix two dots away from the dot matrix Ink particles flying in front of the ink particles of interest, ink particles printed in a dot matrix away from the dot matrix in which the ink ink particles are printed, in a deflecting direction, and flying in front of the ink ink particles and the ink ink particles Obtaining a correction value or a correction coefficient for correcting a recording signal by the presence or absence of a charged state of an ink particle which is printed in a dot matrix away from the dot matrix to which printing is done, and which is flying behind the target ink particle. Inkjet recording apparatus. A nozzle for injecting ink particles, signal generating means for generating a recording signal according to recording information, a charging electrode for charging the ink particles, and a deflection electrode for deflecting the emergency direction of the ink particles charged with the charging electrode; In order to print the multi-letter characters and so on in the direction of particle deflection, the ink particles are deflected one by one while changing the steps with dot matrices for each step, and are avoided in a direction substantially perpendicular to the deflection direction. In an inkjet recording apparatus for relatively moving a recording medium and performing printing, when printing is performed by placing unused ink particles between ink particles used for printing, ink ink particles for correcting a recording signal are printed. The recording signal is applied to the same stage of the dot matrix by the charging state of ink particles or the presence or absence of printing. An ink jet recording apparatus, characterized in that to obtain the determined correction value or the correction coefficient. A nozzle for injecting ink particles, a means for generating a recording signal according to the recording information, a charging electrode for charging the ink particles, and a deflection electrode for deflecting the emergency direction of the charged ink particles, the dot in the deflecting direction of the ink particles; An inkjet recording apparatus which moves a recording medium relatively in a direction perpendicular to the deflecting direction and executes printing, in which a character symbol or the like composed of a matrix is carried out, wherein at least the ink particles for correcting the recording signal are made to fly. Inkjet recording, characterized by obtaining a correction value or a correction coefficient for correcting a recording signal of the ink particles of interest by the presence or absence of charged states or factors of four ink particles and two ink particles flying behind the ink particles of interest. Device. The method according to claim 1, wherein a correction value or a correction coefficient for correcting a recording signal is obtained in a dot matrix column identical to a deflection direction in which the dot matrix to which the target ink ink is to be printed includes the charged state or printing of ink particles. Inkjet recording apparatus. The inkjet recording apparatus according to claim 1, wherein after correcting the charging error during charging of the recording signal of the ink particles of interest, the recording signal is corrected by the correction value or correction coefficient. The jetted ink particles are charged with the ink particles by a recording signal according to the recording information, the ink particles are sequentially deflected one by one while deflecting the emergency direction of the charged ink particles and changing the stage by the dot matrix for each stage. A recording method of an inkjet recording apparatus which moves a recording medium in a direction substantially perpendicular to the deflection direction and performs printing, comprising: a first step of determining a charging amount in printing information of an ink particle of interest for correcting a recording signal; The second step of correcting the charging amount of the ink particles of interest in the information of the charging state of the ink particles to be printed adjacent to the top and bottom of the ink ink particles and the presence or absence of the ink ink particles determined and the charging of the ink particles of interest determined by the second step The third step of adjusting the amount according to the presence or absence of charge amount and printing of the ink particles flying back and forth of the ink particles The recording method of an ink jet recording apparatus, characterized in that running.

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