JP2010105310A - Liquid jet device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid jet device that decreases the viscosity of a liquid without requiring a roller or the like and thereby removes the liquid. <P>SOLUTION: The liquid jet device includes: a liquid jet head 23 that has a first nozzle line 23c1 and a second nozzle line 23c2 and is able to inject a liquid from a nozzle opening 23b; a control means 60 that controls jetting of the ink from the nozzle opening 23b; and a box body 50 disposed opposite the injection head 23 and having passage ports 51A and 51B through which the liquid jetted from the nozzle line 23c is passed. The control means 60 exerts single-sided jet control such that while the passage ports 51A and 51B of the box body 50 face at least the first nozzle line 23c1, a liquid is injected from the first nozzle line 23c1 and the liquid injection from the second nozzle line 23c2 is stopped. A current of air, which is required for only the liquid injection, is caused to flow to a nozzle-forming face 23a. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a liquid ejecting apparatus.

  In an ink jet printer, a wiping operation for wiping the nozzle formation surface of the print head is performed to remove ink adhering to the nozzle formation surface at the end of sealing with the cap member on the nozzle formation surface or at the end of flushing. Like to do. By the way, the ink adhering to the nozzle forming surface thickens as the water evaporates. Therefore, the wiping operation often results in spreading the thickened ink on the nozzle formation surface.

  In order to prevent such a defect, in Patent Document 1, before the cleaning operation, ink is ejected from the print head to the roller to cause the roller to absorb the ink. Then, after the nozzle forming surface is wiped with a roller, the nozzle forming surface is wiped with a wiper blade.

JP 2001-175291 A

  However, according to the technical contents shown in Patent Document 1, a roller is required separately. Therefore, there is a problem that the cost increases. Further, if the roller is left for a predetermined time in a state of absorbing ink, there is a problem that the ink absorbed by the roller increases in viscosity and spreads over the thickened ink.

  The present invention has been made on the basis of the above circumstances, and its object is to provide a liquid ejecting apparatus that can be removed by reducing the viscosity of the liquid without requiring a roller or the like. is there.

  In order to solve the above-described problem, the first side surface of the liquid ejecting apparatus of the present invention is configured such that a plurality of nozzle openings are arranged on the nozzle forming surface to form a first nozzle row and a second nozzle row. , A liquid ejecting head capable of ejecting liquid from the nozzle openings, a control means for controlling the liquid ejecting head to control ejection of the liquid from the nozzle openings, and the liquid ejecting head can be opposed to the liquid ejecting head, and ejected from the nozzle row And a control unit that ejects liquid from the first nozzle row in a state where the passage port of the box body faces at least the first nozzle row. One-side injection control for stopping the injection of liquid from the second nozzle row is performed, and an air flow directed toward the nozzle forming surface is generated by the amount of liquid injection.

  When configured in this way, ascending airflow is generated toward the nozzle forming surface by the amount of liquid ejected and passing through the passage opening. Ink drops are caused to flow in the rising air current, and the air current collides with the nozzle forming surface. Thereby, the nozzle formation surface is painted with the liquid. Therefore, it becomes possible to reduce the viscosity of the liquid on the nozzle forming surface. In addition, since a separate roller or the like for spreading the liquid is not required, the cost can be reduced.

  According to another aspect of the liquid ejecting apparatus of the invention, the liquid ejecting apparatus includes a driving source for causing the liquid ejecting head to scan in the scanning direction, and further includes a wiping unit for wiping the nozzle forming surface. After the one-side injection control, control for driving the drive source is performed to wipe the nozzle forming surface.

  If comprised in this way, after a liquid adheres to a nozzle formation surface by single-sided injection control, a nozzle formation surface is wiped off by a wiping means. Therefore, the newly attached liquid that has not been thickened is spread, and the viscosity of the liquid that is thickened at the nozzle opening can be reduced and redissolved. Thereby, clogging of the nozzle opening can be prevented.

  Further, according to another aspect of the present invention, in the above-described invention, the liquid adheres to the side of the nozzle forming surface where wiping by the wiping means is started rather than the second nozzle row due to the airflow toward the nozzle forming surface. As described above, it is preferable that the control unit controls the ejection of the liquid from the nozzle opening and the drive of the drive source by controlling the liquid ejection head.

  If comprised in this way, a liquid will adhere to the side by which the wiping by a wiping means is started. Therefore, it is possible to reliably spread newly adhered liquid that has not been thickened on the nozzle forming surface with the wiping means, and reduce the viscosity of the liquid thickened at the nozzle opening and re-dissolve it. Is possible. Thereby, clogging of the nozzle opening can be prevented.

  According to another aspect of the present invention, in the above-described invention, the liquid is ink for performing printing on an object to be printed, and the control unit is configured to eject ink from the nozzle openings of the first nozzle row. It is preferable to perform a flushing operation for ejecting ink by applying a drive signal unrelated to printing to the liquid ejecting head.

  With this configuration, ink can be ejected only from the first nozzle row in the flushing operation. Then, by attaching ink to the nozzle formation surface, it is possible to prevent the ink from being thickened at the nozzle opening.

  Furthermore, in another aspect of the present invention, in the above-described invention, the ink ejected from the nozzle openings of the first nozzle row is black ink, and the ink ejected from the nozzle openings of the second nozzle row is In addition to inks of various colors, the control means preferably performs a flushing operation of ejecting black ink from the first nozzle row when ink is out of ink that cannot be ejected from the second nozzle row.

  With this configuration, black ink is ejected from the first nozzle row when ink of various colors (color ink) runs out. As a result, even if the ink of various colors (color ink) cannot be flushed due to running out of ink and the ink of various colors (color ink) is thickened, the viscosity is increased by moistening with black ink. Can be suppressed. Therefore, it is possible to restore the ink ejection performance with only weak cleaning when changing the cartridges of various color inks (color inks).

  Further, according to another aspect of the present invention, in the above-described invention, the passage of the box body includes a first passage that faces the first nozzle row and a second passage that faces the second nozzle row. Two types of mouths are preferably provided.

  If comprised in this way, since the box body is provided with two, the 1st passage port and the 2nd passage port, the airflow which goes to the inside of a box body arises by the inflow of a liquid in a 1st passage port, and 2nd On the other hand, an airflow that rises in the opposite direction is generated, and the liquid flows out of the box body. Thereby, it becomes possible to make the liquid adhere to the vicinity of the nozzle forming surface facing the second passage port.

  Hereinafter, a printer 10 as a liquid ejecting apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 to 8.

<Schematic Configuration of Printer 10>
FIG. 1 is a perspective view showing an overall schematic configuration of an ink jet printer (hereinafter simply referred to as a printer) 10 as a liquid ejecting apparatus according to an embodiment of the present invention. In the following description, the direction indicated by arrow F in FIG. 1 is the downstream side (front side), the opposite direction is the upstream side (rear side), and the left hand side is the left side (left side) when viewed from the downstream side to the upstream side. ), The right hand side will be described as the right side (right side).

  As shown in FIG. 1, the printer 10 has a chassis 20, and a carriage 21 is slidably supported by the chassis 20 via a carriage shaft 22. A print head 23 as a liquid ejecting head is attached to the carriage 21. In addition, the chassis 20 is provided with a timing belt 24 that extends from side to side in a state parallel to the carriage shaft 22.

  The timing belt 24 is stretched between an idle pulley 25 and a drive pulley 26, and reciprocally rotates left and right as the drive pulley 26 is reciprocated by a carriage motor 27. The carriage 21 is coupled to a part of the timing belt 24 and can reciprocate in the left-right direction along with the reciprocating rotation of the timing belt 24 in the left-right direction. Below the timing belt 24, a transport roller 29 for transporting the recording paper P, which is rotated by a paper feed motor 28, is disposed. A platen (not shown) that supports the lower side of the recording paper P conveyed from the upstream side to the downstream side by the rotation of the conveyance roller 29 is disposed below the print head 23.

  Nozzle openings 23b (see FIGS. 4, 6, and 8) through which ink (corresponding to liquid) is ejected are formed in the nozzle formation surface 23a, which is the surface facing the recording paper P of the print head 23. . The print head 23 reciprocates in the left-right direction together with the carriage 21 while ejecting ink onto the recording paper P conveyed from the upstream side to the downstream side by the platen, and sent from a personal computer (not shown). A desired image based on data or the like is recorded on the recording paper P. Note that the reciprocating movement of the print head 23 in the left-right direction when the print head 23 records on the recording paper P is performed within the range of the recording area S <b> 1 that is wider than the left-right width of the recording paper P.

  On the other hand, the print head 23 is set to the right side of the recording area S1 when the nozzle forming surface 23a is soiled with ink or the like during the recording process or whenever a certain amount of recording is performed. It is moved to region S2. In the non-recording area S2, a capping mechanism 30 and a wiping mechanism 40 as described later are provided. Note that the non-recording area S2 is also a standby position of the print head 23 when the printer 10 does not perform recording processing.

<About capping mechanism and wiping mechanism>
Next, the capping mechanism 30 and the wiping mechanism 40 in the present embodiment will be described based on FIGS.

  The capping mechanism 30 includes a cap member 31 and an elevating mechanism that moves the cap member 31 up and down. The cap member 31 has a sealing wall 31a, which will be described later, as shown in FIGS.

  Here, the cap member 31 (sealing wall 31a) is made of rubber or the like having elasticity. Moreover, the recessed part 32 is provided in the inside enclosed by the sealing wall 31a. The recess 32 is formed in a funnel shape whose length in the circumferential direction becomes shorter as it goes downward. In the present embodiment, the funnel portion is formed in a quadrangular pyramid having a rectangular planar shape. Further, a through hole 33 is formed at the bottom of the recess 32, and one end of a connection pipe 34 is connected to the through hole 33. The connecting pipe 34 is formed, for example, in a straight line, and has a small diameter portion 34a having a small diameter on the other end side that is separated from the concave portion 32 (see FIG. 2). And the one end side of the flexible tube not shown is connected to this small diameter part 34a.

  Next, the wiping mechanism 40 will be described. The wiping mechanism 40 includes a wiper blade 41 (corresponding to the wiping means) and a lifting mechanism (not shown) that moves the wiper blade 41 up and down. The wiper blade 41 is a member for scraping ink waste liquid adhering to the nozzle forming surface 23a. The wiper blade 41 is provided on a member (cleaning head CH) integral with the cap member 31, as shown in FIG. The wiper blade 41 is formed so that the width dimension along the main scanning direction becomes smaller from the base portion with respect to the cleaning head CH toward the front end side (upper end side). Therefore, the upper end side of the wiper blade 41 can be elastically deformed when contacting the nozzle forming surface 23a.

  By the way, this wiper blade 41 is also made of rubber or the like having the same elasticity as the cap member 31 described above. As shown in FIG. 2, the ink receiving recess 42 is provided in the cleaning head CH at a portion between the wiper blade 41 and the cap member 31. The ink receiving recess 42 is a portion for receiving the ink waste liquid when the nozzle forming surface 23 a is scraped off by the wiper blade 41. A discharge hole 43 is formed at the bottom of the ink receiving recess 42 so that the waste ink liquid present in the ink receiving recess 42 can be discharged.

<Regarding the nozzle forming surface>
Subsequently, a detailed configuration of the nozzle forming surface 23a will be described. As shown in FIG. 4, a plurality of nozzle openings 23b are arranged at a predetermined pitch on the nozzle forming surface 23a to form a nozzle row 23c. As will be described later, the nozzle row 23c1 located on the right side in FIG. 6 corresponds to the first nozzle row. Further, the nozzle row 23c2 located on the left side in FIG. 6 corresponds to the second nozzle row. Here, in the present embodiment, when the ink is ejected from the nozzle row 23c1 corresponding to the first nozzle row, the one-side ejection control is performed such that the nozzle row 23c2 corresponding to the second nozzle row pauses. It is possible.

  A plurality of nozzle rows 23c are provided on the nozzle forming surface 23a (for the number of sets corresponding to the number of colors) with a predetermined interval. Further, the nozzle forming surface 23a is covered with a head cover 23d. The head cover 23d has a frame shape in plan view. As shown in FIG. 4, the head cover 23d is provided so as to reach a predetermined dimension on the side wall in the height direction.

<About flushing box>
Next, the flushing box 50 provided in the printer 10 of the present embodiment will be described with reference to FIGS. 5 and 6. When the capping mechanism 30 and the wiping mechanism 40 shown in FIGS. 2 and 3 are present on one end side of the printer 10, the flushing box 50 is provided on the other end side of the printer 10. The flushing box 50 corresponds to a box body and is provided in a box shape with a bottom. Further, on the upper surface side of the flushing box 50, there are passage ports 51A and 51B and a sealing portion 52. Of these, a pair of passage openings 51A and 51B are provided in the present embodiment. The passage opening 51A corresponds to the first passage opening, and the passage opening 51B corresponds to the second passage opening. The passage ports 51A and 51B allow ink ejected from the nozzle opening 23b to pass therethrough. Therefore, the passage openings 51A and 51B are provided to be equal to the length of the nozzle row 23c or longer than the nozzle row 23c. However, the passage openings 51A and 51B may be provided shorter than the length dimension of the nozzle row 23c.

  The sealing part 52 is a part for dividing the nozzle row 23c into two sets. That is, in FIG. 6, the sealing part 52 is provided between a pair of passage ports 51A and 51B. Further, a hole 54 is provided in the bottom 53 of the flushing box 50. The hole portion 54 is a portion for allowing the ink to flow downward so that the ink does not collect inside the flushing box 50. The ink discharged from the hole 54 is absorbed by an ink absorber (not shown).

  In practice, a plurality of nozzle rows 23c are provided so as to face each of the passage openings 51A and 51B. However, FIG. 6 schematically shows a state in which only one of the passage ports 51A and 51B corresponds to one nozzle row 23c for the sake of simplicity.

  As shown in FIG. 6, when the nozzle row 23c1 and the passage port 51A are opposed to each other, the nozzle row 23c2 is not opposed to the passage port 51B and is closer to the end than the nozzle row 23c2 (see FIG. 8). The nozzle forming surface 23a of the upstream portion of the movement of the wiper blade 41 shown in FIG. However, the nozzle row 23c2 may be configured to face the passage port 51B when the nozzle row 23c1 and the passage port 51A face each other.

<Configuration of control unit>
Further, as shown in FIG. 7, the printer 10 is provided with a control unit 60. The control unit 60 corresponds to control means, and includes a CPU (not shown), a memory (ROM, RAM, nonvolatile memory, etc.), an ASIC (Application Specific Integrated Circuit), a bus, a timer, an interface, and the like. .

  In addition, signals from various sensors are input to the control unit 60, and based on the signals from the sensors, the control unit 60 performs the carriage motor 27 (corresponding to the drive source), the paper feed motor 28, and printing. It controls the driving of the head 23 and a suction pump (not shown).

  Further, the data and programs in the above-described memory are executed by the CPU, and the components shown in the block diagram of FIG. 7 are functionally realized by the cooperation of the components of the control unit 60. . As shown in FIG. 7, the control unit 60 includes a main control unit 61, a head control unit 62, a CR motor control unit 63, a head drive circuit 64, a CR motor drive circuit 65, and the like.

  Of these, the main control unit 61 is a part that controls the entire printer 10, and receives commands from the computer connected to the printer 10, commands from the operation panel of the printer 10, and the like. Then, a maintenance table (not shown) stored in the memory is read. Then, referring to the maintenance table, any maintenance operation corresponding to the flushing operation or the suction level of the print head 23 is selected.

  In the maintenance table, a plurality of flushing operation levels may be provided. For example, in the normal flushing operation in which the ink droplets are ejected from all the nozzle rows 23c, and in the state where the ink droplets are not ejected from the nozzle row 23c2 on the left side (hereinafter referred to as the wiping upstream side) in FIG. The maintenance table may be configured so that there are at least two flushing operations of the flushing operation for ejecting ink droplets only from the nozzle row 23c1 located on the right side (hereinafter referred to as the wiping downstream side).

<Operation of the present embodiment>
Next, the operation of the printer 10 having the above-described configuration will be described below.

  When a predetermined timing comes with the printer 10 powered on, the main controller 61 gives a command to the CR motor controller 63 to drive the carriage motor 27 so that the print head 23 is placed above the flushing box 50. It is assumed to be positioned. At this time, the print head 23 and the flushing box 50 are in a positional relationship as shown in FIG.

  Subsequently, based on a command from the main control unit 61, the print head 23 is driven so as to perform a flushing operation for ejecting ink droplets from the nozzle row 23c1 located on the downstream side of the wiping (see FIG. 6). Then, ink droplets are ejected from the nozzle row 23c1, and the ink droplets pass through the passage port 51A and enter the flushing box 50.

  On the other hand, since ink droplets are not ejected from the nozzle row 23c2, the ink droplets do not pass through the passage port 51B and enter the flushing box 50. On the contrary, the ink droplet moves in the direction of ascending the passage opening 51B and adheres to the nozzle forming surface 23a (see FIG. 6). In other words, when ink droplets enter the flushing box 50 through the passage opening 51 </ b> A, an air flow that enters the flushing box 50 is generated. Therefore, in the passage port 51B, an airflow that flows out (ascends) is caused by an amount corresponding to the airflow that enters.

  When ink droplets are caused to flow into the rising air flow and the air flow collides with the nozzle forming surface 23a, the ink droplets adhere to the nozzle forming surface 23a. In this way, ink droplets adhere to the nozzle forming surface 23a. As shown in FIGS. 6 and 8, the ink droplets adhere to the left side (upstream of wiping) of the nozzle row 23c2.

  With the ink droplets attached to the nozzle forming surface 23a as described above, the wiping operation is executed after the end of the flushing to wipe the nozzle forming surface 23a. This state is shown in FIGS. At this time, the attached ink is spread over the nozzle forming surface 23a. By spreading the ink, the ink viscosity of the ink thickened at the nozzle opening 23b or the like is lowered. That is, by spreading the wiper blade 41, new adhering ink enters from the nozzle opening 23b, the ink viscosity inside the nozzle opening 23b can be lowered, and the ink having a higher viscosity is redissolved. It becomes possible to make it.

<Effect>
According to the printer 10 having the above configuration, an upward air flow toward the nozzle forming surface 23a is generated by the amount of ink ejected and passing through the passage port 51A. Ink drops are caused to flow in the rising air current, and the air current collides with the nozzle forming surface 23a. As a result, the nozzle forming surface 23a is coated with ink, the viscosity of the ink on the nozzle forming surface 23a can be reduced, and the ink having a high viscosity can be redissolved. Further, in the present embodiment, since a separate roller or the like for spreading ink is not required, the cost can be reduced.

  In addition, after the ink adheres to the nozzle formation surface 23a by the one-side ejection control, the nozzle formation surface 23a is wiped by the wiper blade 41. Therefore, the newly attached liquid that has not been thickened is spread, and the viscosity of the ink thickened at the nozzle opening 23b can be reduced and redissolved. Thereby, clogging of the nozzle opening 23b can be prevented.

  Further, in the present embodiment, ink adheres to the side (left side in FIG. 8A) where wiping with the wiper blade 41 is started. Therefore, newly attached ink that has not been thickened can be reliably spread on the nozzle forming surface 23a with the wiper blade 41, and the viscosity of the ink thickened at the nozzle opening 23b can be reduced and reused. It can be dissolved. Thereby, clogging of the nozzle opening 23b can be prevented.

  In the present embodiment, ink can be ejected only from the nozzle row 23c1 in the flushing operation. Then, by attaching ink to the nozzle forming surface 23a, it is possible to prevent the ink from thickening at the nozzle opening 23b.

  Further, in the present embodiment, the flushing box 50 is provided with two passage openings 51A and 51B. For this reason, an inflow of ink droplets at the passage opening 51 </ b> A causes an air flow toward the inside of the flushing box 51, and an air flow that rises in the opposite direction is generated at the passage opening 51 </ b> B, so that the ink drops flow out of the flushing box 50. As a result, it is possible to make ink adhere to the vicinity of the nozzle forming surface 23a facing the passage port 51B.

<Modification>
Although one embodiment of the present invention has been described above, the present invention can be variously modified in addition to these. This will be described below.

  In the above-described embodiment, the ink ejected by the one-side ejection control may be black ink. In this case, when ink of various colors (color inks) runs out, black ink is ejected from the nozzle row 23c1. As a result, even if the ink of various colors (color ink) cannot be flushed due to running out of ink and the ink of various colors (color ink) is thickened, the viscosity is increased by moistening with black ink. Can be suppressed. Therefore, it is possible to restore the ink ejection performance with only weak cleaning when changing the cartridges of various color inks (color inks).

  Moreover, in the above-mentioned embodiment, as shown in FIG. 5, FIG. 6, etc., the flushing box 50 has shown about the structure which has two passage ports 51A and 51B. However, the number of passage openings is not limited to two. For example, the number of passage openings may be provided by the number corresponding to the number of nozzle rows 23c.

  In the above-described embodiment, the flushing box 50 is separated from the nozzle forming surface 23a by a predetermined distance. However, when the air escape path can be secured on the passage 51B side, the flushing box is shown. 50 may be brought into close contact with the nozzle forming surface 23a.

  In the above-described embodiment, the flushing box 50 in which the sealing portion 52 exists between the two passage openings 51A and 51B is described. However, the flushing box 50 may employ a configuration that does not include the sealing portion 52. When the sealing portion 52 is not provided, the flushing box is provided with a large opening on the upper surface side. Even in this case, there is an airflow that flows out by the amount of ink droplets that enter the inside of the flushing box, and therefore it is possible to cause ink to adhere to the nozzle forming surface 23a by the airflow that flows out.

  Note that the cap member 31 can be used instead of a flushing box having a large opening on the upper surface side. That is, in a configuration that does not include a flushing box, the cap member 31 can be used as the box body.

  Also, considering the ease of outflow due to the airflow during flushing, etc., it is preferable that the ink droplets are small. In addition, in the print head 23, the ink droplets are generated at a frequency (frequency) at which airflow is generated. Preferably it is injected.

  Further, in the above-described embodiment, a configuration has been described in which only one flushing box 50 as a box body exists with respect to the nozzle forming surface 23a. However, two or more flushing boxes 50 as a box body may exist. Further, both the flushing box 50 and the cap member 31 may be box bodies.

  In the above-described embodiment, the case where the print head 23 that operates in the main scanning direction is used is described. However, the present invention may be applied to a long line head that does not scan in the main scanning direction. In addition, when applying this invention to a line head, a flushing box also becomes long corresponding to the said long head.

  In addition, the printer 10 as the liquid ejecting apparatus in each of the above-described embodiments may be a part of a complex device such as a scanner apparatus or a copying apparatus as well as a configuration having a function of the printer alone. . Furthermore, in the above-described embodiment, the ink jet printer 10 has been described. However, the printer 10 is not limited to an ink jet printer as long as it can eject liquid. For example, the present invention can be applied to various printers such as a gel jet printer, a toner printer, and a dot impact printer.

  Further, in the above-described embodiment, the liquid ejecting apparatus is embodied in the ink jet printer 10, but other liquids other than ink (liquid itself or functional material particles are dispersed or mixed in the liquid). It can also be embodied in a liquid ejecting apparatus that ejects or ejects a liquid material (including a fluid material such as gel). For example, a liquid material ejecting apparatus that ejects a liquid containing a material such as an electrode material or a color material (pixel material) used for manufacturing a liquid crystal display, an EL (electroluminescence) display, and a surface emitting display in a dispersed or dissolved state, It may be a liquid ejecting apparatus that ejects a bio-organic matter used for biochip production, or a liquid ejecting apparatus that ejects a liquid that is used as a precision pipette and serves as a sample.

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

1 is a perspective view illustrating a configuration of a printer according to an embodiment of the present invention. It is sectional drawing which shows the structure of a cleaning head. It is a side view showing the positional relationship between the cleaning head and the print head. It is a perspective view which shows the state which looked at the print head from the downward direction. It is a top view which shows the structure of a flushing box. FIG. 4 is a side view showing a positional relationship between a flushing box and a print head. It is a block diagram which shows schematic structure of a control part. It is a figure which shows the positional relationship of a wiper blade and the nozzle formation surface 23a.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Printer, 20 ... Chassis, 21 ... Carriage, 23 ... Print head (corresponding to liquid ejecting head), 23a ... Nozzle forming surface, 23c ... Nozzle row, 23c1 ... Nozzle row (corresponding to first nozzle row), 23c2 ... nozzle row (corresponding to second nozzle row), 27 ... carriage motor (corresponding to drive source), 30 ... capping mechanism, 31 ... cap member, 40 ... wiping mechanism, 41 ... wiper blade (corresponding to wiping means), 50 ... Flushing box (corresponding to the box body), 51A ... Passing port (corresponding to the first passing port), 51B ... Passing port (corresponding to the second passing port), 52 ... Sealing unit, 60 ... Control unit ( Corresponding to control means)

Claims (6)

A plurality of nozzle openings lined up on the nozzle forming surface to form a first nozzle row and a second nozzle row, and a liquid jet head capable of jetting liquid from the nozzle openings;
Control means for controlling the liquid ejection head to control ejection of the liquid from the nozzle opening;
A box body that can be opposed to the liquid ejecting head and includes a passage port through which the liquid ejected from the nozzle row passes;
Have
The control means ejects the liquid from the first nozzle row in a state where the passage port of the box body faces at least the first nozzle row, and Performing one-sided injection control for stopping the liquid injection, and generating an air flow toward the nozzle formation surface by the amount of the liquid injection;
A liquid ejecting apparatus. The liquid ejecting apparatus according to claim 1,
A driving source for causing the liquid jet head to scan in the scanning direction, and wiping means for wiping the nozzle forming surface;
The liquid ejecting apparatus according to claim 1, wherein the control unit performs control for driving the driving source after the one-side ejection control to wipe the nozzle forming surface. The liquid ejecting apparatus according to claim 2,
The control means is configured so that the liquid adheres to the side of the nozzle forming surface where wiping is started by the wiping means with respect to the nozzle forming surface due to the air flow toward the nozzle forming surface. Control of ejection of the liquid from the nozzle opening and control of driving of the drive source by controlling the ejection head,
A liquid ejecting apparatus. The liquid ejecting apparatus according to claim 3.
The liquid is ink for performing printing on a printing object, and the control unit generates a drive signal that is not related to printing when the ink is ejected from the nozzle openings of the first nozzle row. A flushing operation is performed to eject the ink by applying to the liquid ejecting head.
A liquid ejecting apparatus. The liquid ejecting apparatus according to claim 4,
The ink ejected from the nozzle openings of the first nozzle row is black ink;
The ink ejected from the nozzle openings of the second nozzle row is ink of various colors,
The control means performs the flushing operation of ejecting the black ink from the first nozzle row when the ink is out of ink that cannot be ejected from the second nozzle row.
A liquid ejecting apparatus. The liquid ejecting apparatus according to any one of claims 1 to 5,
Two types of a first passage port facing the first nozzle row and a second passage port facing the second nozzle row are provided in the passage port of the box body.
A liquid ejecting apparatus.

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