JP2009012369A - Fluid jet apparatus and fluid jet method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To propose fluid jet apparatus and method in which a good printing performance can be secured even when there exists variation in fluid jet performance of nozzles in a line type jetting head. <P>SOLUTION: The fluid jet apparatus is equipped with the line type jetting head 13 in which a plurality of nozzle openings 17 are arranged over a length of a width W or larger of an object P jetted with the fluid, and which jets the fluid from the nozzle openings 17; and a head moving part 70 which moves the line type jetting head 13 back and forth in a width direction of the object P. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fluid ejecting apparatus and a fluid ejecting method.

2. Related Art As a fluid ejecting apparatus, an ink jet recording apparatus that ejects ink onto a recording medium (printing paper) from a plurality of nozzles formed on a recording head (ejection head) is known.
In such a fluid ejecting apparatus, when any one of the nozzles is blocked by an ink solidified material or the like, so-called dot dropout occurs and print quality deteriorates. In particular, in the case of a line type recording head in which nozzles are arranged over the same length as the width of the recording medium, a blank line perpendicular to the recording medium is formed.

In order to avoid such an inconvenience, the amount of ink discharged from the nozzle adjacent to the blocked nozzle is increased (see Patent Document 1), or the number of ink discharges from the adjacent nozzle is increased (see Patent Document 2). In other words, a technique is disclosed in which the blank lines are reduced by the visual effect by correcting the print data and giving other nozzles a discharge command for the blocked nozzles (see Patent Document 3).
Special table 2004-501007 gazette JP-T-2004-501008 JP-T-2004-501007

However, with the above-described technique, it is possible to compensate for missing dots due to blocked nozzles, but if the nozzles vary in fluid ejection performance (fluid discharge amount, flight curve, etc.), the variation should be corrected. I can't.
That is, for example, there is a problem that a bad straight line such as a light color is formed.

  The present invention has been made in view of the above-described problems, and in a line-type ejection head, fluid ejection that can ensure good printing performance even when there is variation in the fluid ejection performance of the nozzles. An object is to propose a device and a fluid ejection method.

In the fluid ejecting apparatus and the fluid ejecting method according to the present invention, the following means are employed in order to solve the above problems.
A fluid ejecting apparatus according to a first aspect of the present invention includes a line-type ejecting head in which a plurality of nozzle openings are arranged over a width of a fluid ejecting body and the fluid is ejected from the nozzle openings, and the line-type ejecting head And a head moving unit that reciprocates the ejection head in the width direction of the fluid ejecting body.
Accordingly, the fluid can be ejected from the nozzle opening while reciprocating the line-type ejection head to the width of the fluid ejecting body, and therefore, a plurality of nozzles belonging to the same nozzle row with respect to the same landing target position (dot row). Fluid ejection is possible from the nozzle opening.
Therefore, even when there is variation in the fluid ejection performance of each nozzle opening, the dots formed by each nozzle opening can be formed in a dispersed manner, so that good printing performance can be ensured.

  The head moving unit may reciprocate the line-type ejection head within a range equal to or larger than the arrangement pitch of the nozzle openings. As a result, a plurality of nozzle openings belonging to the same nozzle row capable of fluid ejection with respect to the same dot can be reliably ensured.

The head moving unit can position the line-type ejection head with a resolution equal to or less than an arrangement pitch of the nozzle openings.
Thereby, it becomes possible to eject the fluid with a resolution higher than the nozzle arrangement pitch of the nozzle row.

The line-type ejection head is positioned so that there are a plurality of excess nozzle openings located outside the liquid ejection area on both sides in the width direction of the fluid ejected body during non-fluid ejection. To do.
As a result, it is possible to eject (land) the fluid without leakage into the liquid ejecting region of the fluid ejecting body.

According to a second aspect of the present invention, in the fluid ejecting method for ejecting a fluid from the line-type ejecting head in which a plurality of nozzle openings are arranged over the width of the fluid ejecting body toward the fluid ejecting body, In the fluid ejection with respect to the fluid ejecting body, the line-type ejecting head is reciprocated in the width direction of the fluid ejecting body.
Thereby, fluid can be ejected from a plurality of nozzle openings belonging to the same nozzle row with respect to the same landing target position (dot row).

In addition, each time the fluid is ejected from the line ejecting head toward the fluid ejecting body, the line ejecting head is moved.
As a result, even when fluid ejection performance (fluid ejection amount, flight bending, etc.) from each nozzle opening varies, fluid can be ejected while reciprocating the line-type ejection head. Since the variation is dispersed, the printing quality can be made uniform.

The line-type ejection head may be reciprocated during fluid ejection after nozzle clogging occurs in any of the plurality of nozzle openings.
As a result, even when a specific nozzle opening is unable to be ejected, fluid ejection can be supplemented by another nozzle opening.

Hereinafter, an embodiment of a fluid ejection device according to the present invention will be described with reference to the drawings.
In each drawing used for the following description, the scale of each member is appropriately changed to make each member a recognizable size.
In the present embodiment, an ink jet printer is exemplified as the fluid ejecting apparatus according to the present invention.

  FIG. 1 is a schematic configuration diagram of an ink jet printer (hereinafter referred to as an ink jet printer 100) of the present embodiment, FIG. 2 is a plan view of a main part around a line head, and FIG. FIG.

As shown in FIGS. 1 and 2, the inkjet printer 100 includes a recording unit 10 that performs recording on the printing paper P, and a maintenance unit 11 that performs maintenance processing on the recording unit 10.
The recording unit 10 ejects ink droplets to form a line head 13 (ejection head) that forms an image on the printing paper P that is a fluid ejection target, a recording paper conveyance mechanism 14 that conveys the printing paper P, and the line head 13. And an ink reservoir 15 that stores ink (fluid) to be supplied.

  The recording paper transport mechanism 14 is composed of a paper feed motor (not shown), a paper feed roller rotated by the paper feed motor, and the like, and the print paper P is fed to the line head in conjunction with a recording (printing / printing) operation. 13 are sequentially sent out so as to face 13.

  The ink storage unit 15 is disposed on one side of the printer main body 16 and supplies ink to the line head 13 described later by an ink supply unit (not shown). The ink storage unit 15 is an ink of a color corresponding to each color (yellow (Y), magenta (M), cyan (C), black (K1: dye system), black (K2: pigment system)) of the inkjet printer 100. Ink tanks 15Y, 15M, 15C, 15K1, and 15K2 are stored and communicated with the line head 13 through ink supply means.

The line head 13 is a line type recording head in which a large number of nozzle openings 17 are arranged over a length (maximum recording paper width W) of the maximum size printing paper P targeted by the inkjet printer 100.
In the present embodiment, at least five printing sections 5Y, 5M, 5C, 5K1, and 5K2 corresponding to each color (Y, M, C, K1, and K2) are provided. Each of the printing sections 5Y, 5M, 5C, 5K1, and 5K2 has a nozzle row L (see FIG. 3) in which a large number of nozzle openings 17 for ejecting ink droplets are arranged and arranged. They are arranged in order along the transport direction.
As shown in FIG. 3, the nozzle row L includes a plurality of nozzle openings 17 arranged in a line, and the number of nozzle openings 17 and the number of lines (rows) forming the nozzle row L are appropriately set. Is done. By increasing the number of nozzle rows L (number of lines), a wide range of recording can be performed at once.

  The line head 13 is arranged with the longitudinal direction corresponding to the maximum recording paper width W orthogonal to the transport direction of the printing paper P, and ink droplets are ejected from the nozzle openings 17 of the nozzle rows L toward the printing paper P. As a result, an image or the like is recorded on the printing paper P.

The arrangement pitch of the nozzle openings 17, that is, the resolution is set to, for example, 800 dpi (about 32 μm pitch).
In the case of such an arrangement pitch, it is essential that the nozzle row L has about 6600 nozzle openings 17 so that the width 210 mm of the A4 size printing paper P can be simultaneously printed. In the line head 13, a nozzle row L is formed by a larger number (7000 in this embodiment) of nozzle openings 17.

A large number of nozzle openings 17 are arranged over the width of the printing paper P or more. For this reason, a plurality of nozzle openings 17 s arranged outside the region corresponding to the width of the printing paper P (maximum recording paper width W) are set to exist at both ends of the line head 13.
This nozzle opening 17s (hereinafter referred to as surplus nozzle opening 17s) does not eject ink toward the printing paper P in the normal state, and ink is directed toward the printing paper P only in the “correction mode” described later. Is to be discharged.
In the present embodiment, since the nozzle row L is formed by 7000 nozzle openings 17, 200 extra nozzle openings 17 s are arranged on the outside in the width direction of the printing paper P (outside the liquid ejection area). .
The number of surplus nozzle openings 17s is arbitrary, but the maximum amount of movement of the line head 13 in the width direction of the printing paper P is defined according to the number of surplus nozzle openings 17s (the length of the arranged area). The

Further, at both ends in the longitudinal direction of the line head 13 (width direction of the printing paper P), a head fine movement mechanism 70 for reciprocating the line head 13 in the width direction of the printing paper P and positioning it at a desired position is disposed. (See FIG. 2).
By causing the line head 13 to reciprocate slightly in the width direction of the printing paper P by the head micro movement mechanism 70, for example, the ejection failure of the nozzle opening 17 in which nozzle clogging or the like has occurred is replaced with another normal nozzle opening 17 (described above). Supplementary nozzle opening 17s).

The head micro-movement mechanism 70 includes a voice coil motor (VCM) 72 disposed on one side of the line head 13 in the longitudinal direction and a slider mechanism 74 disposed on the other side.
The voice coil motor 72 is a kind of linear motor that moves linearly in proportion to the current flowing through the voice coil placed in the magnetic field of the permanent magnet, and has a feature that the response frequency is high. Then, by connecting either the permanent magnet or the voice coil to the line head 13, the line head 13 can be reciprocated at high speed in the longitudinal direction.
The voice coil motor 72 may be any type such as a moving coil type and a moving magnet type. Moreover, any type, such as a plane type and a cylindrical type, may be used.

On the other hand, the slider mechanism 74 supports the line head 13 so as to be able to move in parallel, and includes a slider shaft connected to the line head 13 and a cylindrical member slidably fitted on the slider shaft (both not shown). ).
In this way, the line head 13 can be moved slightly at high speed in the width direction of the printing paper P by the head fine movement mechanism 70 and can be positioned at a desired position.
The maximum movement amount (movement range) of the line head 13 in the width direction of the printing paper P is, for example, several tens to several times the arrangement pitch of the nozzle openings 17 in the nozzle row direction (width direction of the printing paper P). Set to 100 times. In the present embodiment, since there are 200 surplus nozzle openings 17 s on both ends of the line head 13, it is set to 200 times or less.
The resolution of the movement of the line head 13 is set to, for example, about ½ of the arrangement pitch of the nozzle openings 17 (including the surplus nozzle openings 17s) in the nozzle row direction.

FIG. 4 is a cross-sectional view showing a part of the line head.
The line head 13 includes a head main body 18 and a flow path forming unit 22 including a vibration plate 19, a flow path substrate 20, and a nozzle substrate 21. The nozzle openings 17 for ejecting ink are formed in the nozzle substrate 21, and the lower surface of the nozzle substrate 21 is a nozzle formation surface 21A. The flow path forming unit 22 is a unit in which the diaphragm 19, the flow path substrate 20, and the nozzle substrate 21 are laminated and joined together with an adhesive or the like.

  The line head 13 includes an accommodation space 23 formed inside the head body 18 and a drive unit 24 disposed in the accommodation space 23. The drive unit 24 includes a plurality of piezoelectric elements 25, a fixing member 26 that supports the upper end of the piezoelectric elements 25, and a flexible cable 27 that supplies a drive signal to the piezoelectric elements 25. The piezoelectric element 25 is provided so as to correspond to each of the plurality of nozzle openings 17.

  In addition, an internal flow path 28 that is formed inside the head body 18 and flows ink supplied from the ink tank via the ink supply flow path, and a flow path that includes the vibration plate 19, the flow path substrate 20, and the nozzle substrate 21. A common ink chamber 29 formed by the forming unit 22 and connected to the internal flow path 28, an ink supply port 30 formed by the flow path forming unit 22 and connected to the common ink chamber 29, and the flow path forming unit 22. A pressure chamber 31 formed and connected to the ink supply port 30 is provided. A plurality of pressure chambers 31 are provided so as to correspond to the plurality of nozzle openings 17. Each of the plurality of nozzle openings 17 is connected to each of the plurality of pressure chambers 31.

  The head body 18 is made of synthetic resin. The diaphragm 19 is obtained by laminating an elastic film on a metal support plate such as stainless steel. An island portion 32 joined to the lower end of the piezoelectric element 25 is formed at a portion corresponding to the pressure chamber of the diaphragm 19. At least a part of the diaphragm 19 is elastically deformed according to the driving of the piezoelectric element 25. A compliance portion 33 is formed between the diaphragm 19 and the vicinity of the lower end of the internal flow path 28.

  The flow path substrate 20 has recesses for forming spaces for the common ink chamber 29, the ink supply port 30, and the pressure chamber 31 that connect the lower end of the internal flow path 28 and the nozzle opening 17. In the present embodiment, the flow path substrate 20 is formed by anisotropic etching of silicon.

  The nozzle substrate 21 has a plurality of nozzle openings 17 formed at predetermined intervals (pitch) in a predetermined direction. The nozzle substrate 21 of the present embodiment is a plate-like member formed of a metal such as stainless steel.

  The ink supplied from each ink tank through each ink supply channel flows into the upper end of the internal channel 28. The lower end of the internal flow path 28 is connected to the common ink chamber 29, and the ink that has flowed from the ink tank to the upper end of the internal flow path 28 via the ink supply flow path flows through the internal flow path 28 and is then shared. The ink is supplied to the ink chamber 29. The ink supplied to the common ink chamber 29 is supplied through the ink supply port 30 so as to be distributed to each of the plurality of pressure chambers 31.

  When a drive signal is input to the piezoelectric element 25 via the cable 27, the piezoelectric element 25 expands and contracts. As a result, the diaphragm 19 is deformed (moved) in a direction toward and away from the pressure chamber. As a result, the volume of the pressure chamber 31 changes, and the pressure of the pressure chamber 31 containing ink fluctuates. Ink is ejected from the nozzle openings 17 due to this pressure fluctuation.

  As described above, the piezoelectric element 25 (driving element) of the present embodiment ejects ink from the nozzle opening 17, so that the pressure chamber 31 (space) connected to the nozzle opening 17 is based on the input driving signal. Vary the pressure. A desired image is formed on the printing paper P by the ink ejected from the nozzle openings 17.

The piezoelectric element 25 may be of a type other than the laminated type (for example, monomorph, unimorph, bimorph, Mooney type, multi-Mooney type, cymbal type, etc.).
Furthermore, it is not limited to a piezo jet type using the piezoelectric element 25, and for example, a thermal method can be adopted. In that case, the fluid discharge amount can be changed by changing the application time.

FIG. 5 is a block diagram showing an electrical configuration of the inkjet printer 100.
The inkjet printer 100 includes a control device 60 that controls the operation of the entire inkjet printer 100. The control device 60 includes an input device 61 for inputting various information relating to the operation of the ink jet printer 100, a storage device 62 storing various information relating to the operation of the ink jet printer 100, and a measuring device 63 capable of measuring time. Is connected.
The control device 60 is connected to the maintenance unit 11 (see FIG. 1) including the recording paper transport mechanism 14, the cap member 40, and the suction pump 42 described above.

The ink jet printer 100 includes a drive signal generator 64 that generates a drive signal to be input to the drive unit 24 including the piezoelectric element 25, and the drive signal generator 64 is connected to the control device 60.
The drive signal generator 64 receives data (ejection data) indicating the amount of change in the voltage value of the drive pulse input to the piezoelectric element 25 of the line head 13 and a timing signal that defines the timing for changing the voltage of the drive pulse. Is done.
The drive signal generator 64 generates a drive signal including a drive pulse based on the input data and timing signal. When a drive pulse is input to the piezoelectric element 25 from the drive signal generator 64, a predetermined amount of ink droplet is ejected from the nozzle opening 17.

The control device 60 is connected to the head micro-movement mechanism 70 and is given a drive command corresponding to a command to the recording paper transport mechanism 14 and the drive signal generator 64. As a result, the line head 13 is controlled to move and position slightly in conjunction with the operation of the recording paper transport mechanism 14 and the piezoelectric element 25.
The inkjet printer 100 has a “normal mode” in which normal printing is performed and a “correction mode” in which printing is performed by correcting (complementing) nozzle defects and missing dots, and the head is small only in the “correction mode”. The line head 13 is slightly moved and positioned by the moving mechanism 70.

Next, an example of the operation (fluid ejection method) of the inkjet printer 100 having the above configuration will be described with reference to the drawings.
FIG. 6 is a diagram for explaining the positional relationship (dot pattern) between each nozzle opening 17 of the nozzle row L and the printing paper P. FIG.

First, in the inkjet printer 100, when print data is transmitted from an external device, the control device 60 develops the ejection data corresponding to the dot pattern and transmits it to the line head 13. Then, the line head 13 executes recording (printing / printing) processing, that is, ink ejection onto the printing paper P based on the received ejection data.
As described above, the nozzle row L (for example, the nozzle row Lc corresponding to the printing unit 5C) is formed from a number of nozzle openings 17 (C1 to C7000), and the width direction of the printing paper P (in the case of A4 size) , And a width of 210 mm) are arranged in a substantially straight line at a uniform pitch.
Therefore, by ejecting ink from the nozzle openings 17 (C1 to C7000) of the nozzle row L almost simultaneously to the printing paper P, the thin line S1 extending linearly on the printing paper P in the width direction. Is printed.
In the normal mode, a desired image or the like is formed by forming the thin lines S2, S3,... In the paper feed direction based on the ejection data.

On the other hand, when the correction mode is set, as described above, the head fine movement mechanism 70 ejects ink while finely moving and positioning the line head 13.
Specifically, first, the thin line S1 is formed in the same manner as in the “normal mode”.
Next, the printing paper P is conveyed by one dot pitch (about 32 μm) in the paper feeding direction (direction perpendicular to the nozzle row Lc). At the same time, the line micro head moving mechanism 70 moves the line head 13 along the width direction of the printing paper P by two nozzle pitches (about 64 μm) in the + Y direction for positioning.
Then, again, ink is ejected from the nozzle openings 17 (C1 to C7000) of the nozzle row Lc almost simultaneously to the printing paper P based on the ejection data. As a result, the fine line S2 parallel to and adjacent to the fine line S1 is printed on the printing paper P.
That is, the fine line S2 formed in the normal mode and the fine line S2 formed in the correction mode are visually the same, but there is a correspondence relationship between each dot and the nozzle opening 17 in which the dot is formed. Is different.

Further, the process of ejecting ink is repeated while moving the line head 13 in the + Y direction to form the thin lines S3 and S4.
Next, when printing the thin line S5, the printing paper P is conveyed by one dot pitch, and at the same time, the line head 13 is moved by 6 nozzle pitch in the -Y direction and positioned. That is, the line head 13 is positioned at the same position as when the thin line S1 is printed. Then, the fine line S5 is printed on the printing paper P based on the ejection data from the nozzle openings 17 of the nozzle row Lc.

In this manner, the printing paper P is conveyed by one dot pitch in the paper feeding direction, and at the same time, the ink is discharged toward the printing paper P while moving the line head 13 by several nozzle pitches along the width direction of the printing paper P. Repeat that.
Thus, a plurality of fine lines S are printed side by side in the paper feed direction on the print paper P, and a desired image or the like is formed.

As shown in FIG. 6, the image formed on the printing paper P is not formed by ink ejected from only the same nozzle opening 17 in which the dot rows G arranged in the paper feeding direction are arranged. For example, the dot row G1 is formed by ink ejected alternately from four nozzles C100, C98, C96, and C94.
As described above, since each dot row G is formed by the ink ejected from the plurality of nozzle openings 17, the ink ejection performance (ink ejection amount, flight curve, etc.) of the plurality of nozzle openings 17 of the nozzle row Lc varies. Even if it is, the variation is dispersed. For example, even if there is a nozzle opening 17 with a large flight curve, the dots formed by the nozzle opening 17 are dispersed in a plurality of dot rows G, and only specific dot rows are not formed.
Therefore, the printing performance of each dot row G is made uniform, and a good quality image or the like can be obtained.

FIG. 7 is an explanatory diagram illustrating another example of the positional relationship (dot pattern) between each nozzle opening 17 of the nozzle row L and the printing paper P. FIG.
The fluid ejection method according to the present invention can be applied not only when the ink ejection performance of the plurality of nozzle openings 17 of the nozzle row Lc varies but also when nozzle clogging occurs.
That is, even when nozzle clogging (dot missing) due to ink drying or solidification occurs, it is possible to obtain a good quality image or the like by making the dot missing inconspicuous by dispersing the dot missing. it can.

When nozzle clogging (dot missing) occurs, it is preferable to set the amount of movement of the line head 13 by the head fine movement mechanism 70 larger than in the case of FIG.
As shown in FIG. 7, when nozzle clogging occurs in the nozzle C100 among the plurality of nozzle openings 17 of the nozzle row Lc, for example, the nozzle is moved by 8 nozzles or more for each ink ejection. Thereby, on the printing paper P, the missing dots are arranged without being adjacent to each other. Therefore, a good quality image or the like can be obtained without noticeable dot omission.

FIG. 8 is an explanatory diagram showing a first modification of the positional relationship (dot pattern) between the nozzle openings 17 of the nozzle row L and the printing paper P. FIG.
In the above-described two embodiments, the case where the movement amount of the line head 13 by the head micro movement mechanism 70 is set to an integral multiple of the nozzle pitch has been described, but the present invention is not limited to this. For example, as shown in FIG. 8A, the movement amount of the line head 13 is set to half the nozzle pitch (0.5 pitch).
As a result, it is possible to form dots (ink landing) on the printing paper P with a resolution finer than the arrangement pitch of the nozzle rows L (the plurality of nozzle openings 17) formed in the line head 13. Therefore, a finer image or the like can be obtained.
When it is difficult to set the movement amount of the line head 13 to a resolution equal to or less than the nozzle pitch, for example, as shown in FIG. 8B, the movement amount is, for example, 3.5 nozzle pitch. May be set to an integral multiple of the nozzle pitch +0.5 pitch. That is, the setting may be made so that a new dot is formed between the dots printed immediately before.

FIG. 9 is an explanatory diagram showing a second modification of the positional relationship (dot pattern) between each nozzle opening 17 of the nozzle row L and the printing paper P. FIG.
As described above, the arrangement pitch of the nozzle openings 17 is 800 dpi (about 32 μm pitch), but when forming one thin line St or the like, the line head 13 is moved slightly to eject ink twice. Form. That is, when drawing one thin line St or the like, after the ink is ejected from the line head 13, the line head 13 is further moved slightly by the 0.5 nozzle arrangement pitch to eject the ink. In other words, two adjacent dots of the same thin line St are formed by one nozzle opening 17 (for example, C90).
As a result, the image formed on the printing paper P has a dot pitch (resolution) of 1600 dpi (about 18 μm pitch). The ink discharge amount when printing at 1600 dpi may be about half of the discharge amount when printing at 800 dpi (FIGS. 6 to 8 and the like).

As a method of drawing one thin line Ss and the like by ejecting ink from the line head 13 twice, as shown in FIG. 9A, the line head 13 is always moved slightly by 0.5 nozzle arrangement pitch. There is.
Further, as shown in FIG. 9B, when the next thin line Ss + 1 is formed by ejecting ink twice by slightly moving the line head 13 by 0.5 nozzle arrangement pitch on the same thin line St. First, the line head 13 is slightly moved by 0.5 to 3.5 nozzle arrangement pitch, and then the line head 13 is slightly moved by 0.5 nozzle arrangement pitch on the thin line S2, and the ink is moved twice. You may make it discharge.
In any case, an image having a dot pitch finer than the nozzle arrangement pitch can be obtained. In this way, it is possible to obtain a higher quality and higher definition printed image or the like.

  6 to 9, the nozzle row Lc corresponding to the printing unit 5C has been described as an example, but all other nozzle rows L (nozzle rows corresponding to the printing units 5Y, 5M, 5K1, and 5K2) are described. Is the same.

  Various shapes, combinations, operations / operation procedures, and the like of the constituent members shown in the above-described embodiments are merely examples, and various changes can be made based on design requirements and the like without departing from the gist of the present invention.

  For example, although the case where the voice coil motor 72 which is a kind of linear motor is used as the head micro movement mechanism 70 has been described, the present invention is not limited thereto. For example, a laminated piezoelectric element may be used. Types other than the stacked type may be used.

Moreover, although the case where ink is ejected while the line head 13 is slightly moved when the correction mode is set has been described, the present invention is not limited thereto. Ink may be ejected while always moving the line head 13 slightly.
Further, when a single printing paper P is printed, the normal mode and the correction mode may be mixed. That is, the correction mode may be set in accordance with the print area (center portion of the paper) and the print type (character, image, etc.).

  Further, the moving distance of the line head 13 may be variable. That is, the movement distance of the line head 13 may be set at random, or the movement distance may be changed according to the print area and print type.

  In the above embodiment, the case where the ink jet recording apparatus is an ink jet printer has been described as an example. However, the present invention is not limited to the ink jet printer, and may be a recording apparatus such as a copying machine or a facsimile.

  In each of the above-described embodiments, the case where the fluid ejecting apparatus is a fluid ejecting apparatus (fluid ejecting apparatus) that ejects a fluid such as ink has been described as an example. The present invention can be applied to a fluid ejecting apparatus that ejects or discharges fluid other than the above. Fluids that can be ejected by the fluid ejecting apparatus include liquids, liquids in which particles of functional material are dispersed or dissolved, gel-like fluids, solids that can be ejected as fluids, and powders (such as toner). .

  Further, in each of the above-described embodiments, as the fluid ejected from the fluid ejecting apparatus, not only ink but also fluid corresponding to a specific application can be applied. By providing the fluid ejecting apparatus with an ejecting head capable of ejecting a fluid corresponding to the specific application, ejecting the fluid corresponding to the specific application from the ejecting head, and attaching the fluid to a predetermined object, A given device can be manufactured. For example, the fluid ejecting apparatus (fluid ejecting apparatus) of the present invention disperses a predetermined material such as an electrode material and a color material used for manufacturing a liquid crystal display, an EL (electroluminescence) display, and a surface emitting display (FED). The present invention can be applied to a fluid ejecting apparatus that ejects fluid dispersed (dissolved) in a medium (solvent).

  Further, the fluid ejecting apparatus may be a fluid ejecting apparatus that ejects a bio-organic matter used for biochip manufacturing, or a fluid ejecting apparatus that ejects a fluid that is used as a precision pipette and serves as a sample.

  In addition, transparent resin liquids such as UV curable resins to form fluid injection devices that inject lubricating oil onto precision machines such as watches and cameras, micro hemispherical lenses (optical lenses) used in optical communication elements, etc. For example, a fluid ejecting apparatus that ejects a liquid onto a substrate, a fluid ejecting apparatus that ejects an etching solution such as acid or alkali to etch the substrate, a fluid ejecting apparatus that ejects gel, and a powder such as toner. It may be a toner jet recording apparatus that ejects a solid. The present invention can be applied to any one of these fluid ejecting apparatuses.

1 is a schematic configuration diagram of an inkjet printer according to an embodiment of the present invention. It is a principal part top view of the periphery of the line head with which the same inkjet printer is equipped. It is a top view which shows the nozzle formation surface of the same line head. It is sectional drawing which shows a part of the same line head. 1 is a block diagram illustrating an electrical configuration of an inkjet printer according to an embodiment of the present invention. It is explanatory drawing of the positional relationship (dot pattern) of each nozzle of a nozzle row and printing paper. It is explanatory drawing which shows the other example of the positional relationship (dot pattern) of each nozzle and nozzle of a nozzle row. It is explanatory drawing which shows the 1st modification of the positional relationship (dot pattern) of each nozzle and nozzle of a nozzle row. 11 is an explanatory diagram showing a second modification of the positional relationship (dot pattern) between each nozzle opening 17 of the nozzle row L and the printing paper P. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Inkjet printer (fluid ejecting apparatus), 17 ... Nozzle opening, 17s ... Excess nozzle opening, 13 ... Line head (line-type ejection head), 70 ... Head minute movement mechanism (head moving part), G ... Dot row, L ... Nozzle array, S ... Fine wire, P ... Printing paper (fluid ejector), W ... Maximum recording paper width (width)

Claims (7)

A line-type ejection head in which a plurality of nozzle openings are arranged over a length of a width of a fluid ejecting body and the fluid is ejected from the nozzle openings;
A head moving section for reciprocating the line-type ejection head in the width direction of the fluid ejecting body;
A fluid ejecting apparatus comprising:   The fluid ejecting apparatus according to claim 1, wherein the head moving unit reciprocates the line-type ejecting head within a range equal to or larger than an arrangement pitch of the nozzle openings.   The fluid ejecting apparatus according to claim 1, wherein the head moving unit is capable of positioning the line-type ejecting head with a resolution equal to or less than an arrangement pitch of the nozzle openings.   The line-type ejection head is positioned so that a plurality of excessive nozzle openings located outside the liquid ejection area are present on both sides in the width direction of the fluid ejection body during non-fluid ejection. The fluid ejection device according to any one of claims 1 to 3. In the fluid ejecting method for ejecting fluid toward the fluid ejecting body from a line-type ejecting head in which a plurality of nozzle openings are arranged over the width of the fluid ejecting body.
A fluid ejecting method comprising reciprocally moving the line-type ejecting head in the width direction of the fluid ejecting body when ejecting the fluid to the fluid ejecting body.   6. The fluid ejecting method according to claim 5, wherein the line ejecting head is moved each time the fluid is ejected from the line ejecting head toward the fluid ejecting body.   The line-type ejection head is reciprocated during fluid ejection after nozzle clogging occurs in any of the plurality of nozzle openings. Fluid ejection method.

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