JPH081945A - Charge deflection type liquid ejection recorder - Google Patents

Abstract

PURPOSE:To suppress the printing distortion during the high speed conveyance of a record medium without complicating a device configuration. CONSTITUTION:In a charge and deflection type liquid ejection recorder, ink droplets 5 ejected from a nozzle 1 are charged by a charging electrode 7 and the charged ink droplets 5 are deflected by a deflection electrode 9, thereby printing on a record medium 10. In the ink droplets 5 deflected by the deflection electrode 9, one of which deflection quantity is in the middle range is ejected such that the flying direction thereof is perpendicular to a surface of the record medium 10 whereby either the flying direction thereof or record medium is relatively inclined. Thereby, it is possible to reduce the flying distance of the ink droplet and to suppress the printing distortion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention charges an ink particle ejected from a liquid ejecting nozzle and deflects the charged ink particle by a deflecting electrode to land on a recording medium. The present invention relates to a charge-deflection type liquid jet recording apparatus for recording on a recording medium.

[0002]

2. Description of the Related Art In a charge deflection type liquid jet recording apparatus, it is general to print on a fixed liquid jet head while a recording medium is conveyed. In recent years, there has been a problem in that the print image quality is deteriorated due to the increase in the conveyance speed of the recording medium. As a technique for solving such a problem, for example, as described in Japanese Utility Model Application Laid-Open No. 56-171240, by changing the mounting angle of the deflection electrode,
There is known a technique of correcting the inclination of the print line by changing the direction of the electric field and giving a velocity in the transport direction of the recording medium to subsequent ink particles.

[0003]

However, in the above-mentioned conventional technique, a control circuit for controlling the electric field and the velocity control in the conveying direction of the recording medium is newly required, which complicates the apparatus configuration of the recording apparatus. There is a drawback that

Further, in the prior art, no consideration is given to the method of determining the correction amount from the actual distortion amount of the print result. Furthermore, the prior art does not consider any solution to the print distortion caused by the change in the ink particle velocity depending on the deflection amount. For this reason, it is not easy to reduce print distortion when the print medium is conveyed at a high speed of 300 m / min or more, for example.

An object of the present invention is to provide a charge deflection type liquid jet recording apparatus capable of reducing print distortion during high speed conveyance of a recording medium without complicating the apparatus structure.

[0006]

In order to achieve the above object, the present invention provides an ejection nozzle for ejecting ink particles, a charging electrode for charging the ejected ink particles, and an electrostatic field for charging the charged ink particles. A charge-deflection-type liquid jet that includes a deflecting electrode that deflects the flight direction of ink particles when flying inside, and that causes the ink particles whose flight direction is deflected to land on a recording medium and perform recording on the recording medium. In the recording apparatus, the flying direction of the ink particles having the intermediate deflection amount or the recording target is set so that the flight direction of the ink particles having the intermediate deflection amount of the ink particles deflected by the deflection electrode intersects substantially perpendicularly to the surface of the recording medium. It is a relative tilt of the medium.

Further, according to the present invention, the charge deflection type liquid jet recording apparatus having the above construction is further provided with a deflecting means for deflecting the deflecting direction of the ink particles in the deflecting electrode to the conveying direction of the recording medium.

Further, according to the present invention, based on the detection means for detecting the number of ink particles from the deflection electrode and the deflection amount, and the detection result from the detection means in the charge deflection type liquid jet recording apparatus having the above structure. And a tilt angle display means for displaying the relative tilt angle.

Further, according to the present invention, in the charge-deflection type liquid jet recording apparatus having the above-mentioned structure, the reading means for optically reading the recording result recorded on the recording medium, and the recording result of the recording result from the read result. And a tilt angle adjusting means for adjusting the relative tilt angle so as to determine the skewness and reduce the skewness.

Still further, according to the present invention, in the charge deflection type liquid jet recording apparatus having the above-mentioned structure, there is provided a detection means for detecting the number of ink particles from the deflection electrode and a deflection amount thereof, and a detection result from the detection means. And an inclination angle adjusting means for adjusting the relative inclination angle based on the above.

[0011]

According to the above construction, the flight distance of the ink particles having the minimum deflection amount is slightly longer than that of the prior art, but the flight distance of the ink particles having the maximum polarization amount can be significantly reduced. Therefore, even if the recording medium is conveyed at a high speed, the print distortion can be suppressed to the minimum. In this case, if the deflecting means deflects the ink particles also in the transport direction of the recording medium, the print distortion can be suppressed more effectively.

Further, by detecting the number and the amount of inclination of the ink particles by the detecting means and statistically processing the results, the flight direction of the ink particles in the middle of the deflection amount or the angle at which the recording medium is relatively inclined. Can be displayed on the inclination angle display means.

Further, the recording result recorded on the recording medium is optically read by the reading means, and if the read recording result is distorted, the inclination angle adjusting means causes the inclination direction adjusting means to fly the ink particles in the deflection amount intermediate direction. Alternatively, the recording medium is adjusted and the relative tilt angle is set to the optimum value. In this case, the number of ink particles and the amount of inclination are detected by the detection means without reading the recording result recorded on the recording medium, and based on the result, the flight direction of the ink particles in the middle of the deflection amount or the recording medium. May be adjusted to set the relative inclination angle to an optimum value.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic configuration of a charge deflection type liquid jet recording apparatus of the present invention. In the figure, a nozzle 1 ejects a pressurized ink 2 pressurized at a predetermined pressure by a pressure source (not shown). At this time, the pressurized ink 2 in the nozzle 1 is
Due to the vibration of the electrostrictive element 4 whose vibration is controlled by the excitation amplifier 3, the particles are regularly atomized after being ejected from the nozzle 1.

The particle-shaped ink particles 5 are charged to a predetermined value in the charging electrode 7 whose applied voltage is controlled by the character signal generating circuit 6, and are further deflected by the high voltage power source 8 to which a predetermined voltage is applied. While flying in the electrostatic field within 9, it is deflected in the upper direction in the figure by the deflection force corresponding to the charged electric charge.
The deflected ink particles 5 land on the recording medium 10 conveyed in the direction perpendicular to the paper surface in the figure and form an image on the recording medium 10.

The ink particles 5 to which no electrostatic charge is applied go straight without being deflected in the deflection electrode 9, are collected by the gutter 11, and are reused. In the figure, 12 is the nozzle 1,
A liquid jet head cover including an electrostrictive element 4, a charging electrode 7, a deflecting electrode 9, a gutter 11 and the like is shown.

In the charge deflection type liquid jet recording apparatus having the above structure, when printing on the recording medium 10, the charge amount at the charging electrode 7 is changed so that the ink particle landing position Do when the deflection amount is minimum. It is possible to land the ink particles 5 at a predetermined position from to the ink particle landing position Dn when the deflection amount is maximum.

In this embodiment, the recording medium 10 is placed on the liquid ejecting head cover 12 so that the ink particles having an intermediate deflection amount land vertically on the recording medium 10, that is, land at the ink particle landing position Di. It is installed to be inclined. The ink particle landing position Di is located between the ink particle landing position ink drop Do when the deflection amount is minimum and the ink particle landing position ink drop Dn when the deflection amount is maximum so that the flight distance of the ink particle is minimized. The position has been decided. When the angle between the flight path of the ink particles when the deflection amount is in the middle and the flight path of the ink particles when the deflection amount is the minimum is α, this angle α is the head mounting angle. The recording medium 10 may be fixed and the liquid ejecting head cover 12 may be installed so as to be inclined with respect to the recording medium 10, or both the recording medium 10 and the liquid ejecting head cover 12 may be relatively inclined. You may install it.

In general, the liquid jet head cover 12 is mounted so that its end surface, that is, the surface facing the recording medium 10 is substantially perpendicular to the flight path of the ink droplet when the deflection amount is minimum. Therefore, in this embodiment,
The end surface of the liquid ejecting head cover 12 and the recording surface of the recording medium 10 form an angle α.

The liquid jet head cover 12 is attached for the purpose of improving the operability of the operator and ensuring the safety, and does not relate to the performance of the present charge deflection type liquid jet recording apparatus.

For comparison, FIG. 2 shows a schematic structure of a conventional charge deflection type liquid jet recording apparatus. In the related art, the angle formed by the recording medium 10 and the liquid jet head cover 12 with respect to the deflection direction of the ink particles 5 is not particularly considered, and in general, when the recording surface of the recording medium 10 has the minimum deflection amount. The recording medium 10 is installed so as to be substantially perpendicular to the flight path of the ink particles.

The liquid jet head cover 12 is attached so that its end face is substantially perpendicular to the flight path of the ink droplet when the deflection amount is minimum, and the end face of the liquid jet head cover 12 and the recording medium 10 are attached. It is almost parallel to the recording surface of.

FIG. 3 is a velocity distribution of ink particles for one line in the deflection direction of the conventional charge deflection type liquid jet recording apparatus.
It is desirable that the velocity distribution of the ink particles be almost constant regardless of the deflection amount. However, in an actual charge-deflection type liquid jet recording apparatus, due to electrostatic interference among the charging electrode 7, the deflection electrode 9 and ink particles, the velocity of ink particles having a large deflection amount decreases as shown in FIG. It has a similar velocity distribution.

FIG. 4 shows an example of printing for one column in the deflection direction, which is printed by the conventional charge deflection type liquid jet recording apparatus.
Since the velocity distribution in the deflection direction is as shown in FIG. 3, when printing is performed over one line in the deflection direction by the conventional charge deflection type liquid jet recording apparatus, as shown in FIG. An image having an arched shape like the dot position 15 according to the technique is obtained. The image warp amount δ at this time increases as the conveyance speed v of the recording medium 10 increases. Therefore, in high speed printing, the image quality is extremely deteriorated.

In order to improve the velocity distribution, it is necessary to optimize the shapes of the charging electrode 7 and the deflection electrode 9 and then to manufacture and control them with high precision, which is not preferable because it leads to cost increase.

Therefore, in the present embodiment, as shown in FIG. 1, the flight direction of the ink particles with the intermediate deflection amount is set so that the flight direction of the ink particles with the intermediate deflection amount intersects perpendicularly with the recording surface of the recording medium 10. Alternatively, by relatively inclining the recording medium, the flight distance of ink particles having a large amount of deflection whose speed has decreased is shortened, and the amount of image warpage δ is reduced.

FIG. 5 shows the relationship between the head mounting angle α and the image warp amount δ. Here, the head attachment angle α is an angle formed by the flight path of ink particles when the deflection amount is in the middle and the flight path of ink particles when the deflection amount is minimum, or between the end surface of the liquid ejecting head cover 12 and the recording medium 10. It is the angle with the recording surface.

It can be seen from FIG. 5 that the image warp amount δ decreases as the head mounting angle α increases from zero. The image warp amount δ is 3 when the head mounting angle α is 3
It was found that the value became smaller in the range of 0 to 60 degrees and became the minimum near 45 degrees. Therefore, the head mounting angle is preferably set to 30 to 60 degrees. Further, in high-speed printing in which the recording medium 10 is conveyed at a high speed,
It was confirmed that it is better to set the head mounting angle to 45 degrees.

Next, a mounting device to which the liquid jet head including the nozzle 1, the electrostrictive element 4, the charging electrode 7, the deflection electrode 9, the gutter 11, the liquid jet head cover 12 and the like is mounted will be described with reference to FIG. As shown in FIG. 6, the liquid ejecting head 20 is fixed to a head slide base 22 that is slidable on the head support base 21 in the ink particle ejection direction (the horizontal direction in the drawing). The relative positional relationship between the head support base 21 and the head slide base 22 is adjusted using a slide clamper 23 attached to the head support base 21. The head support 21 is held by a support guide 25 via a rotary elbow 24 that is rotatable in the ink particle deflection direction. The support guide 25 is held by a head support column 27 that is installed upright on the floor surface by a platform 26.

The rotation amount of the rotary elbow 24 corresponds to the head mounting angle α in FIG. 5, and can be adjusted to a predetermined rotation angle by using the rotary elbow clamper 28. Further, the height position of the column guide 25 can be adjusted within the range of the height of the head support column 27 by using the column guide clamper 29.

The column guide 25 is provided with a swinging elbow 30 which is rotatable in a plane parallel to the recording surface of the recording medium, and the liquid jet head 20 can be rotated in the plane parallel to the recording surface. Has become. Then, the rotation angle of the liquid jet head 20 in a plane parallel to the recording surface of the recording medium is adjusted to a predetermined angle by using the swing elbow clamper 31.

By using the above-mentioned mounting device, it becomes possible to mount the liquid ejection head 20 at a predetermined printing position at a predetermined head mounting angle α. The movement amount or rotation amount of the head slide base 22, the rotary elbow 24, and the swing elbow 30 can be controlled by a power source such as a stepping motor.

Next, an adjusting jig for adjusting the head mounting angle of the liquid jet head mounted on the mounting device of FIG. 6 will be described with reference to FIGS. 7 and 8. As shown in FIG. 7, a mounting angle adjusting arm support portion 40 is fixed to the liquid jet head 20 near the position where the deflection start point between the deflection electrodes 9 is projected on the liquid jet head cover 12. The two mounting angle adjusting arms 41 and 42 are rotatably and slidably supported by the mounting angle adjusting arm support portion 40.

Since the character height in the deflection direction is predetermined, the deflection amount and the liquid ejecting head 20 can be determined by this.
Since the distance between the recording medium 10 and the recording medium 10 is determined, the flight distance of the ink particles of the minimum deflection amount and the flight of the ink particles of the maximum deflection amount when a predetermined head mounting angle α is given from the print recording conditions. The distance and flight angle can be obtained.

The distance display scales 43 and 44 displayed on the mounting angle support arms 41 and 42, and the liquid are displayed based on the calculated flight distance of the ink particles having the minimum deflection amount, the flight distance and the flight angle of the ink particles having the maximum deflection amount. Using the angle display scales 45 displayed on the ejection head 20, the mounting angle support arms 41 and 42 indicate the landing positions of the ink particles of the minimum deflection amount and the ink particles of the maximum deflection amount, respectively. , 42 are fixed.

When mounting the liquid jet head 20,
The liquid ejecting head 20 is mounted so that the mounting angle support arms 41 and 42 come into contact with each other at a position on the recording medium 10 to be printed.
Should be installed.

FIG. 8 shows another embodiment of the adjusting jig. In the present embodiment, the distance display scale 43 displayed on the mounting angle support arm 41 and the angle display scale 45 displayed on the liquid ejecting head 20 are set based on the flight distance and flight angle of the ink particles having the shortest flight distance. Use the mounting angle support arm 41 so that the mounting angle support arm 41 indicates the landing position of the ink particle having the minimum flight distance.
Is fixed.

Further, in this embodiment, the mounting angle support arm 41 is provided so that the mounting operation can be performed stably.
A contact pad 46 is provided at the tip of the contact pad so as to contact the recording surface of the recording medium 10 with a predetermined area. When the liquid ejecting head 20 is installed, the liquid ejecting head 20 may be attached so that the contact pad 46 makes contact with the recording medium 10 at a position to be recorded.

FIG. 9 shows a line type ink particle in which light receiving elements and light emitting elements are arranged in the deflection direction of the ink particles in the vicinity of the liquid ejection port of the liquid ejecting head cover 12 in the charge deflection type liquid ejecting recording apparatus shown in FIG. Detection sensor 50
Is provided.

With the above arrangement, the output signals from the excitation amplifier 3 and the charging signal generation circuit 6 and the output signal from the line type ink particle detection sensor 50 are combined to obtain the ink particle deflection amount and line. The average velocity of the ink particles up to the type ink particle detection sensor 50 can be obtained. As a result, the correction coefficient of the amount of charge at the charging electrode 7 and the head mounting angle α can be calculated.

It should be noted that the ink particle detection sensor 50 can be constructed by one light receiving element by being mounted above the ink particle deflection direction. It is also possible to arrange the light receiving element and the light emitting element so as to face the flight path of the ink particles. Further, the calculated head mounting angle α may be displayed to the operator.

FIG. 10 is a block diagram showing a case where the above-mentioned charge deflection type liquid jet recording apparatus is installed in a recording system. The liquid ejecting head 20 is fixed to the head supporting column 27, and the control signals of the electrostrictive element 4 and the charging electrode 7 and the pressurized ink 2 are provided.
Are supplied from the controller 60. Then, the packing material 62 as a recording medium placed on the belt conveyor 61
Are transported as the belt conveyor 61 moves. The position of the packing material 62 is detected by the print medium position detecting device 63 fixed to the side plate of the belt conveyor 61, and the output signal thereof is sent to the controller 60.

Based on the output signal of the print medium position detection device 63, a control command is given from the controller 60 to the liquid jet head 20 to print at a predetermined recording position. The liquid jet head 20 has been described with reference to FIG. A predetermined image 64 is printed on the packing material 62 by the operation.

Here, when the liquid ejecting head 20 has a structure as shown in FIG. 9, the controller 6 determines the correction amount based on the output of the ink particle detection sensor 50 at the time of initial distortion correction.
It is possible to save the labor for the operator to evaluate the image quality by himself / herself by displaying it on the display unit of 0 and to make the correction. Note that it is possible to automate the correction by adopting a configuration in which each elbow of the head support column 27 is rotated by a power source such as a stepping motor.

FIG. 11 is a diagram showing another embodiment of the recording system. In this embodiment, an image capturing sensor 65 is provided in addition to the configuration shown in FIG. If the image capturing sensor 65 is provided in this way, the head mounting angle α can be automatically adjusted, and labor can be saved.

FIG. 12 shows the liquid jet head of FIG.
6 is a flowchart showing the operation after system startup when installed in the recording system of FIG. After starting the system, if the correction mode is selected in step 100, the process proceeds to step 101, and if not selected, the process proceeds to step 110. When the correction mode is selected, the image capture sensor 65 is operated in step 101, and the ink particle detection sensor 50 is operated in step 102. Then, in step 103, a predetermined correction pattern is printed.

Next, in step 104, the ink particles when the correction pattern is printed are detected by the ink particle detection sensor 50, and the velocity distribution and the amount of distortion of the ink particles are measured from the results. Then, in step 105, the correction coefficient of the charge amount and the head mounting angle are calculated from the measurement result in step 104, the correction is performed in step 106, and the correction pattern based on the correction is printed in step 107.

The printed correction pattern is used in step 10.
In step 8, the image is read by the image capturing sensor 65, and in step 109, it is determined whether the read print result is within a predetermined distortion limit. If it is within the distortion limit, in step 110, the printing operation is executed using the correction pattern in step 107 as a normal pattern. If it is not within the distortion limit in step 109, the process proceeds to step 104, the processes from step 104 to step 108 are executed, and the above processes are repeated until the distortion is converged within the distortion limit.

[0049]

As described above, according to the present invention,
Since the flight distance of the ink particles having the maximum deflection amount can be reduced, it is possible to suppress the print distortion even when the recording medium is conveyed at high speed. In this case, if the deflection direction of the ink particles is also deflected in the conveyance direction of the recording medium, the print distortion can be suppressed more effectively when the recording medium is conveyed at high speed.

Further, if the number of ink particles and the amount of deflection from the deflection electrode are detected or the recording result recorded on the recording medium is optically read, the results are used to determine the intermediate deflection amount. It is possible to relatively adjust the flight direction of the ink particles or the recording medium, and it is possible to automatically set the relative inclination angle.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a charge deflection type liquid jet recording apparatus of the present invention.

FIG. 2 is a schematic configuration diagram of a conventional charge deflection type liquid jet recording apparatus.

FIG. 3 is a diagram showing a velocity distribution of ink particles for one row in the deflection direction in the conventional technique.

FIG. 4 is a diagram showing an example of printing for one column in the deflection direction printed by a conventional technique.

FIG. 5 is a diagram showing a relationship between a head mounting angle α and an image warp amount δ.

FIG. 6 is a configuration diagram of a supporting device that supports the charge deflection type liquid jet recording apparatus of the present invention.

FIG. 7 is a configuration diagram of a jig for adjusting a head mounting angle.

FIG. 8 is a view showing an alternative of a jig for adjusting a head mounting angle.

FIG. 9 is a configuration diagram when a line sensor is attached to the charge deflection type liquid jet recording apparatus of the present invention.

FIG. 10 is a configuration diagram of the charging deflection type liquid jet recording apparatus of the present invention when installed in a recording system.

FIG. 11 is another configuration diagram when installed in the recording system of the charge deflection type liquid jet recording apparatus of the present invention.

FIG. 12 is a flowchart showing an operation after system startup when the liquid jet head of FIG. 9 is installed in the recording system of FIG.

[Explanation of symbols]

 1 Nozzle 2 Pressurized Ink 3 Excitation Amplifier 4 Electrostrictive Element 5 Ink Particle 6 Charging Signal Generation Circuit 7 Charging Electrode 8 High Voltage Power Supply 9 Deflection Electrode 10 Recording Medium 11 Gutter 12 Liquid Jet Head Cover 20 Liquid Jet Head 21 Head Support 22 Head Slide base 23 Slide clamper 24 Rotating elbow 25 Strut guide 26 units 27 Head support strut 28 Rotating elbow clamper 29 Strut guide clamper 30 Swing elbow 31 Swing elbow clamper 40 Mounting angle adjustment arm support 41, 42 Mounting angle adjustment arm 43, 44 Distance display scale 45 Angle display scale 46 Contact pad 50 Ink particle detection sensor 60 Controller 61 Belt conveyor 62 Packaging material 63 Print medium position detection 64 Image 65 Image capture sensor

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B41J 2/055 B41J 3/04 103 A

Claims (8)

[Claims] 1. An ejection nozzle for ejecting ink particles, a charging electrode for charging the ejected ink particles, and a deflection electrode for deflecting the flight direction of the ink particles when the charged ink particles fly in an electrostatic field. A charge-deflection-type liquid jet recording apparatus for recording on a recording medium by landing the ink particles of which the flight direction is deflected on the recording medium, wherein the deflection among the ink particles deflected by the deflection electrode is performed. Charge deflection type characterized in that the flying direction of the ink particles of the deflection amount intermediate or the recording medium is relatively inclined so that the flight direction of the ink particles of the intermediate amount amount intersects almost perpendicularly to the surface of the recording medium. Liquid jet recording device. 2. An ejection nozzle for ejecting ink particles, a charging electrode for charging the ejected ink particles, and a deflection electrode for deflecting the flight direction of the ink particles when the charged ink particles fly in an electrostatic field. A charge-deflection-type liquid jet recording apparatus for recording on a recording medium by landing the ink particles of which the flight direction is deflected on the recording medium, wherein the deflection among the ink particles deflected by the deflection electrode is performed. The ink particle flight direction of the deflection amount intermediate or the recording medium is relatively inclined so that the flight direction of the ink particles of the medium amount of the amount intersects substantially perpendicularly to the surface of the recording medium,
A charge deflection type liquid jet recording apparatus comprising: a deflection unit that deflects a deflection direction of the ink particles on the deflection electrode in a conveyance direction of the recording medium. 3. An ejection nozzle for ejecting ink particles, a charging electrode for charging the ejected ink particles, and a deflection electrode for deflecting the flight direction of the ink particles when the charged ink particles fly in an electrostatic field. A charge-deflection-type liquid jet recording apparatus for recording on a recording medium by landing the ink particles of which the flight direction is deflected on the recording medium, wherein the deflection among the ink particles deflected by the deflection electrode is performed. The ink particle flight direction of the deflection amount intermediate or the recording medium is relatively inclined so that the flight direction of the ink particles of the medium amount of the amount intersects substantially perpendicularly to the surface of the recording medium,
Detection means for detecting the number of ink particles from the deflection electrode and the amount of deflection thereof, and inclination angle display means for displaying the relative inclination angle based on the detection result from the detection means,
A charge-deflection-type liquid jet recording apparatus comprising: 4. The charge deflection type liquid jet recording apparatus according to claim 3, wherein the tilt angle display means simultaneously displays a correction amount of the tilt angle with respect to an optimum value. apparatus. 5. The charge deflection type liquid jet recording apparatus according to claim 3, wherein the detection unit is a line sensor provided between the deflection electrode and the recording medium. Deflection type liquid jet recording apparatus. 6. An ejection nozzle for ejecting ink particles, a charging electrode for charging the ejected ink particles, and a deflection electrode for deflecting the flight direction of the ink particles when the charged ink particles fly in an electrostatic field. A charge-deflection-type liquid jet recording apparatus for recording on a recording medium by landing the ink particles of which the flight direction is deflected on the recording medium, wherein the deflection among the ink particles deflected by the deflection electrode is performed. The ink particle flight direction of the deflection amount intermediate or the recording medium is relatively inclined so that the flight direction of the ink particles of the medium amount of the amount intersects substantially perpendicularly to the surface of the recording medium,
A reading unit that optically reads the recording result recorded on the recording medium, and determines the skewness of the recording result from the read result, and adjusts the relative inclination angle to reduce the skewness. A charge deflection type liquid jet recording apparatus comprising: a tilt angle adjusting means for adjusting. 7. An ejection nozzle for ejecting ink particles, a charging electrode for charging the ejected ink particles, and a deflection electrode for deflecting the flight direction of the ink particles when the charged ink particles fly in an electrostatic field. A charge-deflection-type liquid jet recording apparatus for recording on a recording medium by landing the ink particles of which the flight direction is deflected on the recording medium, wherein the deflection among the ink particles deflected by the deflection electrode is performed. The ink particle flight direction of the deflection amount intermediate or the recording medium is relatively inclined so that the flight direction of the ink particles of the medium amount of the amount intersects substantially perpendicularly to the surface of the recording medium,
Detection means for detecting the number of ink particles from the deflection electrode and its deflection amount, and inclination angle adjustment means for adjusting the relative inclination angle based on the detection result from the detection means,
A charge-deflection-type liquid jet recording apparatus comprising: 8. The charge deflection type liquid jet recording apparatus according to claim 1, wherein the relative inclination angle is 30 to 60 degrees. Liquid jet recording device.