JP2010274532A - Liquid jetting apparatus and inflow processing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a proper amount of liquid for prevention flow into every filling part. <P>SOLUTION: A liquid ejecting apparatus includes: a head for jetting two or more kinds of liquids for recording to a medium, the head including a first filling part which is filled with first liquid out of two or more kinds of liquids for recording and the liquid for prevention for preventing clogging, and a second filling part which is filled with second liquid out of two or more kinds of liquids for recording and the liquid for prevention; a first liquid storing body for storing the first liquid; a second liquid storing body for storing the second liquid; a liquid-for-prevention storing body for storing the liquid for prevention; a first selection part for selecting a first communicating state where the liquid-for-prevention storing body and the first filling part communicate with each other and a second communicating state where the first liquid storing body and the first filling part communicate with each other; and a second selection part for selecting a third communicating state where the liquid-for-prevention storing body and the second filling part communicate with each other and a fourth communicating state where the second liquid storing body and the second filling part communicate with each other. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a liquid ejecting apparatus and an inflow processing method.

  A liquid ejecting apparatus having a head for ejecting a plurality of types of recording liquids onto a medium is already well known, and an example of such a liquid ejecting apparatus is an ink jet printer.

  In such a liquid ejecting apparatus, the first filling portion that can be filled with the first liquid of the plurality of types of recording liquid and the prevention liquid for preventing clogging, and the plurality of types of recording liquid A head including a second filling portion that can be filled with a second liquid of the liquid and the prevention liquid, a first liquid container that contains the first liquid, and a first liquid that contains the second liquid. A two-liquid container, a prevention liquid container for containing the prevention liquid, a first continuous state in which the prevention liquid container and the first filling portion communicate with each other, the first liquid container, and the first liquid container A first selection unit for selecting a second communication state in which the first filling unit communicates, a third communication state in which the prevention liquid container and the second filling unit communicate with each other, and the second liquid storage. A second selection unit for selecting a fourth communication state in which the body and the second filling unit communicate with each other. There is shall.

  In the liquid ejecting apparatus, the controller causes the liquid to be consumed from the first filling unit after operating the first selection unit to shift from the second communication state to the first continuous state. The first treatment for causing the prevention liquid to flow into the first filling unit, and the second selection unit to operate the second selection unit to shift from the fourth communication state to the third communication state. By consuming from the second filling part, the second process of causing the prevention liquid to flow into the second filling part is executed to prevent clogging of the first filling part and the second filling part.

JP 2008-162023 A

  By the way, conventionally, the first process for causing the prevention liquid to flow into the first filling part and the second process for causing the prevention liquid to flow into the second filling part have been performed. In addition, an appropriate amount of the prevention liquid may not flow into the first filling portion or the second filling portion. For this reason, there has been a demand for a measure for allowing an appropriate amount of the prevention liquid to flow into any filling portion.

  This invention is made | formed in view of this subject, The place made into the objective is to make an appropriate quantity of the prevention liquid flow in into any filling part.

A main aspect of the present invention is a head for ejecting a plurality of types of recording liquid onto a medium, the first liquid of the plurality of types of recording liquid being filled with a preventing liquid for preventing clogging. A head including a possible first filling section, and a second filling section capable of filling the second liquid of the plurality of types of recording liquid and the prevention liquid;
A first liquid container that contains the first liquid;
A second liquid container for containing the second liquid;
A prevention liquid container for containing the prevention liquid;
A first for selecting a first communication state in which the prevention liquid container and the first filling part communicate with each other and a second communication state in which the first liquid container and the first filling part communicate with each other. A selection section;
A second selection for selecting a third communication state in which the prevention liquid container and the second filling portion communicate with each other and a fourth communication state in which the second liquid container and the second filling portion communicate with each other. And
By operating the first selection unit to shift from the second communication state to the first continuous state, the liquid is consumed from the first filling unit, thereby causing the first filling unit to contain the prevention liquid. A first treatment to flow in, and
The liquid is consumed from the second filling unit after the second selection unit is operated to shift from the fourth communication state to the third communication state, whereby the prevention liquid is supplied to the second filling unit. A controller that performs a second process to be introduced; and
A liquid ejecting apparatus comprising:
The liquid ejecting apparatus, wherein the controller makes a first consumption amount of the liquid when the first process is executed different from a second consumption amount of the liquid when the second process is executed. It is.

  Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

1 is a block diagram of a printer 1 according to an embodiment. 1 is a perspective view illustrating an outline of a printer. 1 is a perspective view illustrating an outline of a printer. FIG. 4 is a conceptual diagram showing nozzle rows formed on a head 42. FIG. 5A is a conceptual diagram showing the filling chamber 70 of the head 42 and the ink cartridge 44. FIG. 5B is a conceptual diagram showing the filling chamber 70 of the head 42. 3 is a conceptual diagram showing an ink suction unit 32. FIG. It is the flowchart which showed the example which the controller 60 performs white switching and magenta switching after a power supply is turned ON. It is the flowchart which showed the example which the controller 60 performs clear switching, when a power supply is turned off.

  At least the following will be made clear by the description of the present specification and the accompanying drawings.

A head for ejecting a plurality of types of recording liquid onto a medium, the first filling being capable of being filled with a first liquid of the plurality of types of recording liquid and a preventing liquid for preventing clogging A head, and a second filling portion capable of being filled with the second liquid of the plurality of types of recording liquid and the prevention liquid;
A first liquid container that contains the first liquid;
A second liquid container for containing the second liquid;
A prevention liquid container for containing the prevention liquid;
A first for selecting a first communication state in which the prevention liquid container and the first filling part communicate with each other and a second communication state in which the first liquid container and the first filling part communicate with each other. A selection section;
A second selection for selecting a third communication state in which the prevention liquid container and the second filling portion communicate with each other and a fourth communication state in which the second liquid container and the second filling portion communicate with each other. And
By operating the first selection unit to shift from the second communication state to the first continuous state, the liquid is consumed from the first filling unit, thereby causing the first filling unit to contain the prevention liquid. A first treatment to flow in, and
The liquid is consumed from the second filling unit after the second selection unit is operated to shift from the fourth communication state to the third communication state, whereby the prevention liquid is supplied to the second filling unit. A controller that performs a second process to be introduced; and
A liquid ejecting apparatus comprising:
The liquid ejecting apparatus, wherein the controller makes a first consumption amount of the liquid when the first process is executed different from a second consumption amount of the liquid when the second process is executed. .
According to such a liquid ejecting apparatus, it is possible to allow an appropriate amount of the prevention liquid to flow into any filling portion.

Further, the first continuous state is a state in which both the first liquid container and the prevention liquid container are in communication with the first filling part,
The second communication state is a state in which only the first liquid container and the first filling portion communicate with each other,
The third communication state is a state where both the second liquid container and the prevention liquid container are in communication with the second filling portion,
The fourth communication state may be a state in which only the second liquid container and the second filling portion communicate with each other.
In such a case, it is possible to allow an appropriate amount of the prevention liquid to flow into any filling portion.

The controller may make the first consumption amount and the second consumption amount different from each other based on the viscosities of the first liquid and the second liquid.
In such a case, an appropriate amount of the prevention liquid can be allowed to flow into any of the filling parts more reliably.

Next, provided in a head for ejecting a plurality of types of recording liquid onto the medium, the first liquid of the plurality of types of recording liquid and a preventing liquid for preventing clogging can be filled. A first continuous state in which the first filling portion and the prevention liquid container communicate with each other;
The first selection unit for selecting the second communication state in which the first filling unit and the first liquid container communicate with each other is operated to shift from the second communication state to the first continuous state. Performing a first process of causing the prevention liquid to flow into the first filling unit by consuming a first consumption of liquid from the first filling unit after
A third communication state in which the second filling portion provided in the head and capable of filling the second liquid of the plurality of types of recording liquid and the prevention liquid is in communication with the prevention liquid container; ,
The second selection unit for selecting the fourth communication state in which the second filling unit and the second liquid container communicate with each other is operated to shift from the fourth communication state to the third communication state. Performing a second process of causing the prevention liquid to flow into the second filling portion by consuming a second consumption amount different from the first consumption amount later from the second filling portion;
An inflow treatment method characterized by comprising:
According to this inflow processing method, it is possible to allow an appropriate amount of the prevention liquid to flow into any filling portion.

=== Regarding Printer 1 According to the Present Embodiment ===
First, an outline of the printer 1 according to the present embodiment will be described with reference to FIGS. 1 to 5.

  FIG. 1 is a block diagram of an ink jet printer (hereinafter also referred to as a printer 1) as an example of a liquid ejecting apparatus according to this embodiment. 2 and 3 are perspective views illustrating the outline of the printer 1. FIG. 4 is a conceptual diagram showing nozzle rows formed on the head 42. FIG. 5A is a conceptual diagram showing the filling chamber 70 of the head 42 and the ink cartridge 44. FIG. 5B is a conceptual diagram showing the filling chamber 70 of the head 42. FIG. 6 is a conceptual diagram showing the ink suction unit 32.

  The printer 1 shown in FIG. 2 and the printer 1 shown in FIG. 5A and 5B, in order to make the drawings easier to understand, it is assumed that the number of nozzles 72, pressure chambers 74, and piezo elements 78 is seven, which is smaller than the actual number (360). Is drawn. In FIG. 6, only one of the five suction pumps 35 is shown for easy understanding of the drawing (the description of the four suction pumps 35 is omitted).

  The printer 1 corresponds to, for example, roll paper or large-sized printing paper (these correspond to media). In the example shown in FIGS. 2 and 3, the printer 1 includes roll paper S. As shown in FIG. 1, the printer 1 includes a transport unit 20, a head unit 40, an ink suction unit 32, a detector group 50, and a controller 60. The printer 1 that has received the print data (print command) from the computer 110 as an external device controls each unit (the transport unit 20, the head unit 40, etc.) by the controller 60. For example, the controller 60 receives print data (print command) from the computer 110, controls each unit based on the received print data (print command), and prints an image on the roll paper S. The situation in the printer 1 is monitored by the detector group 50, and the detector group 50 outputs the detection result to the controller 60. The controller 60 controls each unit based on the detection result output from the detector group 50.

  The transport unit 20 is for transporting the roll paper S in the transport direction. The transport unit 20 includes a paper feed motor 31, a map roller 24 that is driven by the paper feed motor 31 to feed the roll paper S in the transport direction (hereinafter also referred to as the sub-scanning direction), and a roll for setting the roll paper S. A paper holder 27, a paper pressing roller 29 for pressing the roll paper S against the map roller 24, and a platen 26 that supports the roll paper S are provided.

  The roll paper S is set in the roll paper holder 27. The roll paper S is pressed against the map roller 24 by the paper pressing roller 29, and is fed in the transport direction on the surface of the platen 26 as the map roller 24 rotates.

  The head unit 40 is for ejecting ink (hereinafter referred to as ejection) in the roll paper S (ink is a concept including both water-based ink and oil-based ink. In the present embodiment, the head unit 40 is also referred to as ejection). Is. The head unit 40 supports a head 42, an ink cartridge 44 that stores ink to be supplied to the head 42, and moves the head 42 in a moving direction (hereinafter also referred to as a main scanning direction). A carriage 48, a carriage motor 49, a traction belt 46 driven by the carriage motor 49 to move the carriage 48, and a guide rail 47 for guiding the carriage 48. The carriage 48 is pulled by a pulling belt 46 driven by a carriage motor 49 and moves in the main scanning direction along the guide rail 47. An operation in which the head 42 ejects ink while the carriage 48 moves in the main scanning direction (the ejected ink corresponds to a recording liquid), and an operation in which the transport unit 20 sends the roll paper S described above. Is repeated, dots are formed on the roll paper S and an image is printed on the roll paper S.

  Here, the printer 1 according to the present embodiment can execute white printing (printing with white ink) in addition to normal monochrome printing and color printing. That is, the printer 1 has, as print modes, a print mode that performs white printing (print mode that uses white ink), a print mode that performs monochrome printing (print mode that does not use white ink), and a print mode that performs color printing (white mode). (Print mode that does not use ink).

  In the printer 1 according to the present embodiment, in order to realize these print modes, a plurality of types of ink, that is, white ink as an example of the first liquid for white printing and monochrome / color printing are used. Black ink, cyan ink, magenta ink and yellow ink as examples of the second liquid are prepared.

  Note that the white ink according to the present embodiment is described in, for example, Japanese Patent Application Laid-Open No. 2003-313481. This white ink is a water-based pigment ink, and a characteristic matter related to this white ink is that it includes a hollow resin. When the hollow resin is present in the liquid ink, the hollow portion (cavity) is filled with moisture. When the ink is ejected and placed on the medium, moisture in the hollow portion (cavity) evaporates, and the hollow portion (cavity) is filled with air. The size of this hollow portion (cavity) is designed to scatter visible light effectively (ie, to make the ink appear white) and thus was formed by the ink placed on the medium. When the image is viewed, the image looks white.

  The head 42 is provided with a chamber filled with ink (hereinafter referred to as a filling chamber 70 for convenience) for each of the five colors of ink (for each color). As shown in FIGS. 5A and 5B, the filling chamber 70 includes a nozzle 72, a pressure chamber 74, a reservoir 76, and the like.

  The nozzles 72 are ink discharge ports provided on the lower surface of the head 42, and as shown in FIG. 4, 360 nozzles are provided for each of the five colors of ink (for each color). That is, in the present embodiment, nozzles for ejecting white ink, nozzles for ejecting cyan ink, nozzles for ejecting magenta ink, nozzles for ejecting yellow ink, nozzles for ejecting black ink, 360 (each 360 × 5 = 1800 in total) is provided. The 360 nozzles are arranged in a row along the sub-scanning direction, and form a white nozzle row W, a cyan nozzle row C, a magenta nozzle row M, a yellow nozzle row Y, and a black nozzle row K. ing.

  The pressure chamber 74 is a chamber communicated with the nozzle 72 as shown in FIGS. 5A and 5B. A drive element (piezo element 78) for ejecting ink is provided at a position adjacent to the pressure chamber 74. When printing is performed, the piezo element 78 performs an expansion / contraction operation based on the drive pulse included in the drive signal output from the unit control circuit 64. Then, the expansion / contraction operation changes the capacity of the pressure chamber 74 so that ink is ejected from the nozzle 72.

  The pressure chamber 74 (also the piezo element 78) is provided for each nozzle 72. Therefore, as the pressure chambers 74 according to the present embodiment, there are 360 white ink pressure chambers, cyan ink pressure chambers, magenta ink pressure chambers, yellow ink pressure chambers, and black ink pressure chambers (total of each). 360 × 5 = 1800). 5A and 5B, the number of nozzles 72, pressure chambers 74, and piezo elements 78 is seven, which is smaller than the actual number (360). However, in FIG. 5A, from the left, the # 4 nozzle from which white ink is ejected, the corresponding pressure chamber 74 and the piezo element 78, and the # 4 nozzle from which cyan ink is ejected correspond to this. Pressure chamber 74 and piezo element 78, # 4 nozzle ejecting magenta ink and corresponding pressure chamber 74 and piezo element 78, # 4 nozzle ejecting yellow ink, corresponding pressure chamber 74 and A piezo element 78, a # 4 nozzle from which black ink is ejected, and a pressure chamber 74 and a piezo element 78 corresponding thereto are shown. In FIG. 5B, the nozzles # 1, # 2, # 3..., # 7 from which white ink is ejected, the pressure chamber 74 and the piezoelectric element 78 corresponding thereto are shown in order from the left. Yes.

  As shown in FIGS. 5A and 5B, the reservoir 76 is a chamber that communicates with the pressure chamber 74 via the supply path 75. The reservoir 76 is for storing ink, and is provided for each of the five colors of ink (for each color). That is, in the present embodiment, a white ink reservoir, a cyan ink reservoir, a magenta ink reservoir, a yellow ink reservoir, and a black ink reservoir are provided, and each reservoir 76 has 360 pressure chambers 74. Communicated with. FIG. 5A shows a white ink reservoir, a cyan ink reservoir, a magenta ink reservoir, a yellow ink reservoir, and a black ink reservoir in order from the left, but FIG. 5B shows a white ink reservoir. Only the reservoir is shown.

  In this manner, the head 42 is provided with the filling chamber 70 including one reservoir 76, 360 pressure chambers 74, and 360 nozzles 72 for each of the five colors of ink (for each color). That is, in the present embodiment, a white ink filling chamber 70a as an example of a first filling unit filled with white ink, a cyan ink filling chamber filled with cyan ink, and a second filling unit filled with magenta ink. As an example, a magenta ink filling chamber 70b, a yellow ink filling chamber filled with yellow ink, and a black ink filling chamber filled with black ink are provided.

  As shown in FIG. 5A, the ink cartridge 44 is detachably connected to the head 42 (more specifically, the reservoir 76 of the filling chamber 70 of the head 42), and the ink in the ink cartridge 44 is discharged. The filling chamber 70 is filled by flowing (supplied) into the filling chamber 70. As apparent from FIG. 5A, each of the cyan ink filling chamber, the yellow ink filling chamber, and the black ink filling chamber has only one ink cartridge 44 (that is, the cyan ink ink cartridge and the yellow ink ink). In contrast, two ink cartridges 44 are connected to the white ink filling chamber 70a and the magenta ink filling chamber 70b, respectively.

  That is, in the present embodiment, the white ink filling chamber 70a can be filled with the white ink and the prevention liquid (clear ink in the present embodiment) for preventing clogging in the head 42. The magenta ink filling chamber 70b can be filled with magenta ink and clear ink (in this embodiment, the same clear ink that can be filled into the white ink filling chamber 70a).

  For this purpose, the white ink filling chamber 70a contains two ink cartridges 44, that is, a white ink ink cartridge 44a as an example of a first liquid container containing white ink and a clear ink. The first clear ink cartridge 44b as an example of the prevention liquid container includes a first continuous state in which the first clear ink cartridge 44b and the white ink filling chamber 70a communicate with each other, and the white ink cartridge 44a. The white ink filling chamber 70a is connected via a first changeover switch 80 as an example of a first selection unit for selecting a second communication state in communication. More specifically, the first changeover switch 80 according to the present embodiment is configured so that not only the first clear ink cartridge 44b but also the white ink cartridge 44a includes the white ink filling chamber 70a as the first continuous state. The communication state (that is, the state where both the first clear ink cartridge 44b and the white ink cartridge 44a are in communication with the white ink filling chamber 70a) is selected (while the first switching is performed). The switch 80 selects a state in which only the white ink cartridge 44a communicates with the white ink filling chamber 70a as the second communication state.

  When the second communication state is selected by the first changeover switch 80, the white ink filling chamber 70a is filled with white ink, and when the first continuous state is selected, the white ink filling chamber 70a. (The first continuous state is a state in which both the first clear ink cartridge 44b and the white ink cartridge 44a are in communication with the white ink filling chamber 70a. Therefore, precisely, when the first continuous state is selected, the white ink and the clear ink are supplied (inflowed) to the white ink filling chamber 70a, and the white ink and the clear ink are cleared to the white ink filling chamber 70a. However, in this embodiment, the white ink filling chamber 70a is not completely filled with only clear ink. Te, and the use convenience the expression "clear ink is filled (clear ink filling state)").

  Similarly, the magenta ink filling chamber 70b has two ink cartridges 44, that is, a magenta ink cartridge 44c as an example of a second liquid container containing magenta ink and a prevention ink containing clear ink. The second clear ink cartridge 44d as an example of the liquid container has a third communication state in which the second clear ink cartridge 44d and the magenta ink filling chamber 70b communicate with each other, and the magenta ink cartridge 44c and the magenta ink filling. The chambers 70b are connected via a second changeover switch 82 as an example of a second selection unit for selecting a fourth communication state in which the chambers 70b communicate with each other. More specifically, in the second communication switch 82 according to the present embodiment, in the third communication state, not only the second clear ink cartridge 44d but also the magenta ink cartridge 44c communicates with the magenta ink filling chamber 70b. (That is, a state where both the second clear ink cartridge 44d and the magenta ink cartridge 44c are in communication with the magenta ink filling chamber 70b) (while the second changeover switch is selected). 82, as the fourth communication state, selects a state where only the magenta ink cartridge 44c communicates with the magenta ink filling chamber 70b).

  When the fourth communication state is selected by the second changeover switch 82, the magenta ink filling chamber 70b is filled with magenta ink, and when the third communication state is selected, the magenta ink filling chamber 70b is filled. Clear ink is filled (in the third communication state, both the second clear ink cartridge 44d and the magenta ink cartridge 44c are in communication with the magenta ink filling chamber 70b). More precisely, when the third communication state is selected, the magenta ink and the clear ink are supplied (inflowed) to the magenta ink filling chamber 70b, and the magenta ink and the clear ink are supplied to the magenta ink filling chamber 70b. However, in this embodiment, the magenta ink filling chamber 70b is provided in the present embodiment. The present state not being filled only with the clear ink in total, will be used for convenience the expression "clear ink is filled (clear ink filling state)").

  In the present embodiment, the first changeover switch 80 (second changeover switch 82) uses only the white ink cartridge 44a (magenta ink cartridge 44c) as the white ink filling chamber 70a (magenta ink filling chamber 70b). And a second position where only the first clear ink cartridge 44b (second clear ink cartridge 44d) communicates with the white ink filling chamber 70a (magenta ink filling chamber 70b). The three neutral positions can be taken, and in the first series state (third communication state), the first changeover switch 80 (second changeover switch 82) determines the neutral position. By adopting this, the second communication state (fourth communication state) is changed to the first changeover switch 80 (second changeover switch). By 82) takes the first position, in which (second position is not used so as to be realized).

  Also, the purpose of selective filling of white ink (magenta ink) and clear ink, from white ink filling state (magenta ink filling state) to clear ink filling state (clear ink filling state to white ink filling state (magenta ink filling state)) A specific switching method and a switching timing example will be described in detail later.

  The ink suction unit 32 is for sucking ink. As shown in FIGS. 2 and 3, the ink suction unit 32 is provided at a position where the head 42 faces when the carriage 48 is located at the home position at the end portion in the main scanning direction. Then, the ink suction unit 32 performs a cleaning process for eliminating the ejection failure of the head 42, and from the white ink filling state (magenta ink filling state) to the clear ink filling state (clear ink filling state to white ink filling state (magenta ink) The ink is sucked during the switching process to the filling state)) (details of the switching process will be described later). As shown in FIG. 6, the ink suction unit 32 includes a head cap 33, a hose 34, and a suction pump 35.

  In the head cap 33, the internal space is partitioned into five suction chambers 33a. When the head cap 33 is raised, the head cap 33 comes into close contact with the lower surface of the head 42. At this time, each of the five suction chambers 33a has a closed space covering the corresponding nozzle row of the five nozzle rows. Form. In other words, the head cap 33 is raised so as to seal the lower surface (nozzle surface) of the head 42.

  The suction pump 35 has two small rollers 35a in the vicinity of the peripheral edge thereof, and a hose 34 is wound around the two small rollers 35a. When the suction pump 35 is driven by a motor (not shown) and rotates in the direction of the arrow, the air in the hose 34 is pushed by the small roller 35 a, thereby exhausting in the closed space in the head cap 33. ing. When exhaust is performed in the closed space, the closed space becomes negative pressure, and ink is sucked from the filling chamber 70 (nozzle 72) of the head 42. The sucked ink is discharged through a hose 34 to a waste ink discharge unit (not shown).

  The head cap 33 exhibits the following functions without the suction pump 35 being operated. That is, when the printer 1 does not perform printing (and when the carriage 48 is located at the home position), the head cap 33 rises and comes into close contact with the lower surface of the head 42. This suppresses ink evaporation from the nozzles 72 (in other words, ink drying). In other words, the head cap 33 functions as a lid that seals the lower surface (nozzle surface) of the head 42 during printing suspension and suppresses ink evaporation.

  As shown in FIG. 3, a flushing box 37 is provided at a position adjacent to the ink suction unit 32 in the main scanning direction (position located inside the ink suction unit 32). In the liquid ejecting apparatus (printer 1), the printing process is being executed (that is, from when the controller 60 receives a print command to when the printer 1 shifts to a standby state), and the head 42 performs image printing. Therefore, when the operation of ejecting ink is not performed, flushing is performed on all the nozzles 72 (including the nozzles 72 that are not used for printing the image). When flushing is performed, the carriage 48 moves to a position where the head 42 faces the flushing box 37. At this position, when the above-described piezo element 78 performs an expansion / contraction operation based on the drive pulse included in the drive signal output from the unit control circuit 64, the capacity of the pressure chamber 74 changes, and the nozzle 72 Ink is discharged toward the flushing box 37. The ink discharged toward the flushing box 37 is discharged to a waste ink discharge unit (not shown).

  The controller 60 is a control unit (control unit) for controlling the printer 1. The controller 60 includes an interface unit 61, a CPU 62, a memory 63, and a unit control circuit 64. The interface unit 61 transmits and receives data between the computer 110 that is an external device and the printer 1. The CPU 62 is an arithmetic processing unit for controlling the entire printer. The memory 63 is for securing an area for storing a program of the CPU 62, a work area, and the like, and includes storage elements such as a RAM which is a volatile memory and an EEPROM which is a nonvolatile memory. The CPU 62 controls each unit via the unit control circuit 64 in accordance with a program stored in the memory 63.

=== About selective filling of white ink (magenta ink) and clear ink ===
As described above, in the present embodiment, the white ink filling chamber 70a (magenta ink filling chamber 70b) can be filled with not only white ink (magenta ink) but also clear ink. In this section, the purpose of such matters will be described first. After that, a specific switching method from the white ink filling state (magenta ink filling state) to the clear ink filling state and from the clear ink filling state to the white ink filling state (magenta ink filling state) will be described. Subsequently, an example of switching timing from the white ink filling state (magenta ink filling state) to the clear ink filling state and from the clear ink filling state to the white ink filling state (magenta ink filling state) will be described. explain.

<<< Purpose of selective filling of white ink (magenta ink) and clear ink >>>
Here, the purpose of selectively filling the white ink filling chamber 70a (magenta ink filling chamber 70b) with white ink (magenta ink) and clear ink will be described.

  The purpose is to prevent clogging in the head 42, that is, the white ink filling chamber 70a (magenta ink filling chamber 70b). That is, when comparing the white ink (magenta ink) and the clear ink, it is obvious that the white ink (magenta ink) is more likely to cause the clogging, and therefore the white ink (magenta ink). ) Is left in the state filled in the white ink filling chamber 70a (magenta ink filling chamber 70b) for a long time, the thickening of the white ink (magenta ink) is promoted and the head 42 (especially the nozzle 42). 72), clogging occurs. In view of this, in the present embodiment, when the power is turned off, the clear ink is filled into the white ink filling chamber 70a (magenta ink filling chamber 70b) (for details). , Described later).

  Note that the cyan ink, yellow ink, and black ink according to the present embodiment are inks that are less likely to thicken than the white ink and magenta ink according to the present embodiment. Therefore, for these three inks, In this embodiment, it is not a target for selective filling.

<<< How to change the filling state >>>
Here, a method of switching from a white ink filling state to a clear ink filling state (hereinafter also referred to as clear switching for convenience) (in other words, a process of flowing clear ink into the white ink filling chamber 70a), and a clear ink filling state To a white ink filling state (hereinafter also referred to as white switching for convenience), and a method for switching from a magenta ink filling state to a clear ink filling state (hereinafter also referred to as clear switching for convenience) (in other words, A process of flowing clear ink into the magenta ink filling chamber 70b) and a method of switching from the clear ink filling state to the magenta ink filling state (hereinafter also referred to as magenta switching for convenience) will be described.

  When executing the clear switching method (processing for flowing clear ink into the white ink filling chamber 70a (magenta ink filling chamber 70b)), the controller 60 first controls the head unit 40 to perform the first switching described above. The switch 80 (second changeover switch 82) is switched. That is, the controller 60 operates the first changeover switch 80 (second changeover switch 82), and only the white ink cartridge 44a (only the magenta ink cartridge 44c) and the white ink filling chamber 70a (magenta ink). Both the first clear ink cartridge 44b and the white ink cartridge 44a (the second clear ink cartridge 44d and the magenta ink) from the second communication state (the fourth communication state) in communication with the filling chamber 70b). The ink cartridge 44c) and the white ink filling chamber 70a (magenta ink filling chamber 70b) are shifted to the first communication state (the third communication state).

  Next, the controller 60 causes the ink to be consumed from the white ink filling chamber 70a (magenta ink filling chamber 70b) in the first continuous state (the third communication state). More specifically, the controller 60 controls the ink suction unit 32 to perform ink suction. As a result, the first clear so that the white ink (magenta ink) filled in the white ink filling chamber 70a (magenta ink filling chamber 70b) is discharged to the waste ink discharge portion and replaced with the white ink (magenta ink). Clear ink from the ink cartridge 44b (second ink cartridge 44d for the second clear ink), white ink (magenta ink) from the white ink cartridge 44a (magenta ink cartridge 44c) to the white ink filling chamber 70a (magenta ink) Filling chamber 70b) is filled. As a result, the clear ink flows (supplied) into the white ink filling chamber 70a (magenta ink filling chamber 70b).

  The above-described processing for flowing clear ink into the white ink filling chamber 70a (hereinafter also referred to as first processing) and processing for flowing clear ink into the magenta ink filling chamber 70b (hereinafter also referred to as second processing) The unit 40 and the ink suction unit 32 are sequentially controlled by the controller 60, and are common in that the changeover switch and the ink consumption (ink suction) are sequentially executed. Is different. That is, the controller 60 consumes ink when performing the first process (that is, ink suction amount; hereinafter also referred to as first consumption) and ink consumption when performing the second process ( That is, the ink suction amount (hereinafter also referred to as second consumption amount) is different from each other. Specifically, the controller 60 controls the ink suction unit 32 so that the first consumption amount is larger than the second consumption amount.

  In the present embodiment, the first consumption amount and the second consumption amount (which one is increased) are determined based on the viscosity of the white ink and the magenta ink. In this embodiment, the viscosity of the white ink is 4.2 mPa · s, whereas the viscosity of the magenta ink is 4.5 mPa · s (note that the viscosity of the clear ink is 3.5 mPa · s), The viscosity of magenta ink is higher than that of white ink. Then, the amount of consumption corresponding to the ink having a lower viscosity (white ink in the present embodiment) (that is, the first consumption amount) is changed to the ink having the higher viscosity (magenta ink in the present embodiment). ) Is controlled so as to be larger than the consumption corresponding to () (that is, the second consumption).

  The reason why the first consumption of ink when the first process is executed and the second consumption of ink when the second process is executed are different from each other based on the viscosity of the white ink and the magenta ink. Will be described later.

  Next, a white switching (magenta switching) method will be described. When executing the white switching (magenta switching) method, first, the controller 60 controls the head unit 40 to switch the first switching switch 80 (second switching switch 82) described above. That is, the controller 60 operates the first changeover switch 80 (the second changeover switch 82) to change the second communication state (the fourth communication state) from the first continuous state (the third communication state). ).

  Next, the controller 60 consumes ink from the white ink filling chamber 70a (magenta ink filling chamber 70b) in the second communication state (the fourth communication state). More specifically, the controller 60 controls the ink suction unit 32 to perform ink suction. As a result, the clear ink filled in the white ink filling chamber 70a (magenta ink filling chamber 70b) is discharged to the waste ink discharge portion (white ink (magenta ink) is also discharged), and is replaced with the clear ink. As described above, the white ink filling chamber 70a (magenta ink filling chamber 70b) is filled with the white ink (magenta ink) from the white ink cartridge 44a (magenta ink cartridge 44c). As a result, the clear ink existing in the white ink filling chamber 70a (the magenta ink filling chamber 70b) does not exist.

<<< Ink switching timing >>>
Next, an example of switching timing of clear switching and white switching (magenta switching) will be described. As described above, in the present embodiment, when the power is turned off, the state of the white ink filling chamber 70a (magenta ink filling chamber 70b) is set to the clear ink filling state. Therefore, as a general rule, when the power is turned off, the controller 60 performs clear switching, and after the power is turned on, the controller 60 performs white switching (magenta switching) (white ink filling state (magenta ink Return to the filling state)).

  Hereinafter, the above will be described in more detail with reference to FIGS. FIG. 7 is a flowchart illustrating an example in which the controller 60 performs white switching or magenta switching after the power is turned on. FIG. 8 is a flowchart illustrating an example in which the controller 60 performs clear switching when the power is turned off.

  Note that various operations of the printer 1 when this switching is executed are mainly realized by the controller 60. In particular, in the present embodiment, it is realized by the CPU 62 processing a program stored in the memory 63. And this program is comprised from the code | cord | chord for performing the various operation | movement demonstrated below.

  First, an example in which the controller 60 performs white switching or magenta switching after the power is turned on will be described. The flowchart of FIG. 7 starts when the power is turned on by the user (step S2). Note that, as described above, in this embodiment, when the power is turned off, the clear ink is filled in the white ink filling chamber 70a and the magenta ink filling chamber 70b (in the clear ink filling state). ) When the power is turned on, white switching and magenta switching are not executed, and the clear ink filling state is maintained.

  When the power is turned on, the printer 1 enters a standby state waiting for printing (step S4: N), but even in such a state, white switching and magenta switching are not executed, and the clear ink filling state is maintained. .

  Then, after a while, the printer 1 (controller 60) receives a print command from the computer 110 (step S4: Y). When the first print command is received after the power is turned on, the controller 60 prints the print mode in which the print command performs white printing (hereinafter, white mode) and the print mode in which monochrome printing is performed (hereinafter, monochrome mode). Then, it is checked which of the printing modes for performing color printing (hereinafter, color mode) is indicated (step S6). When the print command indicates the white mode (step S6: white), the controller 60 performs white switching (step S8), and when the print command indicates the color mode (step S6). (S6: Color), the controller 60 executes magenta switching (step S10), and when the print command indicates the monochrome mode (step S6: monochrome), the controller 60 executes white switching and magenta switching. The clear ink filling state is maintained.

  When receiving the first print command after the power is turned on, if the print mode is checked and white switching (magenta switching) is executed, printing is performed for the second and subsequent times after the power is turned on. Until the color mode (white mode) is checked in the command, the controller 60 maintains the clear ink filling state without executing magenta switching (white switching). Also, when the first print command is received after the power is turned on, if the print mode is checked and neither white switching nor magenta switching is executed, the second time after the power is turned on. Until the color mode is checked in the subsequent print commands, the controller 60 maintains the clear ink filling state without executing magenta switching, and the white mode is checked in the second and subsequent print commands after the power is turned on. Until this time, the controller 60 maintains the clear ink filling state without executing white switching.

  Next, an example in which the controller 60 performs clear switching when the power is turned off will be described. The flowchart in FIG. 8 starts when the power is turned off by the user (step S12). As described above (as shown in FIG. 7), when the power is turned on (while power is supplied to the printer 1), the white ink filling chamber 70a (magenta ink filling chamber 70b). ) Can take both a clear ink filling state and a white ink filling state (magenta ink filling state). Therefore, there is a possibility of both a clear ink filling state and a white ink filling state (magenta ink filling state) immediately before the power is turned off.

  When the controller 60 receives the power OFF command, the controller 60 checks whether the white ink filling chamber 70a is in the clear ink filling state or the white ink filling state (step S14. For example, the history of clear switching and white switching is displayed. If stored in the memory 63, this check can be realized by referring to the history from the memory 63). If it is in the clear ink filling state (step S14: N), the controller 60 does nothing, but if it is in the white ink filling state (step S14: Y), the clear switching (that is, the first) After the change-over switch 80 is operated, ink consumption for the first consumption amount) is executed (step S16).

  Similarly, the controller 60 checks whether the state of the magenta ink filling chamber 70b is the clear ink filling state or the magenta ink filling state (step S18. For example, the history of clear switching and magenta switching is stored in the memory 63. By doing so, this check can be realized by referring to the history from the memory 63). If it is in the clear ink filling state (step S18: N), the controller 60 does nothing, but if it is in the magenta ink filling state (step S18: Y), clear switching (that is, the second state). After the change-over switch 82 is operated, the second consumption amount of ink consumption) is executed (step S20).

  In the present embodiment, step S14 and step S16 and step S18 and step S20 are performed in this order. However, step S18 and step S20 may be performed in the order of step S14 and step S16. In addition, step S14 and step S16 and step S18 and step S20 may be performed in parallel.

=== Effectiveness of Printer 1 According to the Present Embodiment ===
As described above, the controller 60 according to the present embodiment consumes ink from the white ink filling chamber 70a after operating the first changeover switch 80 to shift from the second communication state to the first continuous state. Thus, after the first process of flowing the clear ink into the white ink filling chamber 70a and the second changeover switch 82 is operated to shift from the fourth communication state to the third communication state, the ink is magenta. The second process of causing the clear ink to flow into the magenta ink filling chamber 70b by consuming from the filling chamber 70b is performed. Furthermore, the first consumption of ink when the first process for flowing the clear ink into the white ink filling chamber 70a and the ink consumption when performing the second process for flowing the clear ink into the magenta ink filling chamber 70b are performed. The second consumption amount is different from each other. This makes it possible to allow an appropriate amount of clear ink to flow into any filling chamber.

  That is, in the conventional example (comparative example), the controller 60 consumed the ink so that the first consumption amount and the second consumption amount were uniformly the same value (the ink was being sucked). ). That is, in the first series state in which both the first clear ink cartridge 44b and the white ink cartridge 44a communicate with the white ink filling chamber 70a, the first consumption for consuming ink from the white ink filling chamber 70a. The second consumption for consuming the ink from the magenta ink filling chamber 70b in the third communication state in which the amount and the second clear ink cartridge 44d and the magenta ink cartridge 44c both communicate with the magenta ink filling chamber 70b. The amount was the same.

  As a result, the ratio of clear ink in the white ink filling chamber 70a after execution of the first process (the value obtained by dividing the amount of clear ink by the total amount of clear ink and white ink) and the value after execution of the second process are performed. There was a phenomenon in which the ratio of clear ink in the magenta ink filling chamber 70b (a value obtained by dividing the amount of clear ink by the total amount of clear ink and magenta ink) was different.

  That is, at the time when the ink is started to be consumed from the white ink filling chamber 70a (magenta ink filling chamber 70b) in the first continuous state (the third communication state), the white ink filling chamber 70a and the magenta ink filling chamber 70b In either case, only white ink and magenta ink are filled (the amount of clear ink is close to 0). In the white ink filling chamber 70a, clear ink and new white ink flow from the ink cartridge so as to replace the discharged white ink due to ink consumption, and in the magenta ink filling chamber 70b, As ink is consumed, clear ink and new magenta ink flow from the ink cartridge so as to replace the discharged magenta ink.

  In such a situation, the ratio between the clear ink and the white ink flowing into the white ink filling chamber 70a and the ratio between the clear ink and the magenta ink flowing into the magenta ink filling chamber 70b are the difference in ink characteristics between the clear ink and the white ink. The difference is not necessarily the same due to the difference in ink characteristics between clear ink and magenta ink. For example, when the viscosity of the magenta ink is higher than that of the white ink as in the present embodiment, the magenta ink has a property that it is less likely to move than the white ink, so the white ink filling chamber 70a and the magenta ink Even if the same amount of ink is consumed in the filling chamber 70b, the degree of inflow of magenta ink into the magenta ink filling chamber 70b is smaller than the degree of inflow of white ink into the white ink filling chamber 70a. The degree of clear ink flowing into the magenta ink filling chamber 70b is greater than the degree of clear ink flowing into the white ink filling chamber 70a). That is, the ratio of the clear ink flowing into the magenta ink filling chamber 70b is larger than the ratio of the clear ink flowing into the white ink filling chamber 70a.

  Thus, when the first consumption amount and the second consumption amount are the same, the ratio of the clear ink and the white ink flowing into the white ink filling chamber 70a and the clear ink flowing into the magenta ink filling chamber 70b The ratio of magenta ink will be different. Therefore, a phenomenon occurs in which the ratio of the clear ink in the white ink filling chamber 70a after the execution of the first process is different from the ratio of the clear ink in the magenta ink filling chamber 70b after the execution of the second process.

  By the way, in the clear ink filling state, the white ink filling chamber 70a (magenta ink filling chamber 70b) is filled with the white ink (magenta ink) and the clear ink. But it's not good. That is, if the ratio of the clear ink is too small, the original function of the clear ink to prevent clogging does not work properly, and conversely, if the ratio of the clear ink is too large, the clear ink filling state to the white ink filling state ( There may be a problem that it takes a long time to return to the (magenta ink filling state) or a problem that the clear ink remains even after returning to the white ink filling state and an inconvenience that an appropriate white color does not appear at the time of printing. . That is, the clear ink ratio has an appropriate value (or an appropriate value range).

  In the conventional example (comparative example), since the first consumption amount and the second consumption amount are the same, the ratio of the clear ink in the white ink filling chamber 70a after the execution of the first process (hereinafter, also referred to as the first ratio). The ratio of clear ink in the magenta ink filling chamber 70b after the execution of the second process (hereinafter also referred to as the second ratio) is different. Therefore, even if one of the first ratio and the second ratio can be set to the proper value, it becomes impossible to set the other ratio to a proper value.

  In contrast, in the present embodiment, since the first consumption amount and the second consumption amount are different from each other, the total amount of ink that flows in (in other words, clear ink that replaces discharged white ink (magenta ink)). The amount of ink and the amount of new white ink (magenta ink) are different between the white ink filling chamber 70a and the magenta ink filling chamber 70b, and therefore both the first ratio and the second ratio are the same. In addition, it is possible to adjust so as to obtain the appropriate value.

  More specifically, in the present embodiment, as described above, the first consumption amount is larger than the second consumption amount, that is, the clear ink and the new white ink flowing into the white ink filling chamber 70a. Is controlled to be larger than the total amount of clear ink and new magenta ink flowing into the magenta ink filling chamber 70b.

  As described above, in this embodiment, since the viscosity of the magenta ink is higher than that of the white ink, the degree of the clear ink flowing into the magenta ink filling chamber 70b is determined by the clear ink flowing into the white ink filling chamber 70a. It becomes larger than the inflow degree. Therefore, in the present embodiment, by making the first consumption amount larger than the second consumption amount, the total amount of clear ink flowing into the white ink filling chamber 70a and the total amount of clear ink flowing into the magenta ink filling chamber 70b. Can be made substantially the same, so that both the first ratio and the second ratio can be adjusted to be the same and to be the appropriate values. That is, an appropriate amount of clear ink can be allowed to flow into any filling chamber.

=== Other Embodiments ===
Although the above-described embodiment is mainly described with respect to the liquid ejecting apparatus, disclosure of an inflow processing method and the like is also included. The above-described embodiments are for facilitating understanding of the present invention, and are not intended to limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and it is needless to say that the present invention includes equivalents thereof. In particular, the embodiments described below are also included in the present invention.

  In the above embodiment, the liquid ejecting apparatus is embodied as an ink jet printer. However, the liquid ejecting apparatus is not limited to this, and other liquids other than ink (a liquid material in which particles of a functional material are dispersed in addition to a liquid, It is also possible to embody the present invention in a liquid ejecting apparatus that ejects or ejects a fluid (including a fluid like a gel). For example, a liquid material ejecting apparatus that discharges a liquid material in the form of dispersed or dissolved materials such as electrode materials and color materials used in the manufacture of liquid crystal displays, EL (electroluminescence) displays, and surface-emitting displays, and biochip manufacturing It may be a liquid ejecting apparatus for ejecting a bio-organic substance used in the above, or a liquid ejecting apparatus for ejecting a liquid as a sample used as a precision pipette. 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. May be 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, or a fluid ejecting apparatus that ejects gel. The present invention can be applied to any one of these injection devices.

  In the above-described embodiment, a so-called serial printer has been described as an example of the ink jet printer. However, the present invention is not limited to this, and may be a line printer, for example.

  In the filling state switching method according to the above-described embodiment, the ink suction is performed after the first changeover switch 80 (second changeover switch 82) is switched. However, the present invention is not limited to this. . For example, after the first changeover switch 80 (second changeover switch 82) is switched, the above-described flushing may be performed instead of ink suction, or both flushing and ink suction may be performed. In other words, as an example of consuming ink from the filling unit, an example in which ink suction is performed has been described. However, the present invention is not limited to this example, and flushing or both flushing and ink suction may be performed. Good.

In the above-described embodiment, the first continuous state is a state where both the white ink cartridge 44a and the first clear ink cartridge 44b communicate with the white ink filling chamber 70a, and the second communication state. The state is a state where only the white ink cartridge 44a communicates with the white ink filling chamber 70a, and the third communication state is filled with both the magenta ink cartridge 44c and the second clear ink cartridge 44d and the magenta ink. The chamber 70b is in a communication state, and the fourth communication state is a state in which only the magenta ink cartridge 44c is in communication with the magenta ink filling chamber 70b. However, the present invention is not limited to this. For example,
The first continuous state is a state where only the first clear ink cartridge 44b and the white ink filling chamber 70a communicate with each other, and the third communication state is the second clear ink cartridge 44d and the magenta ink filling chamber 70b. It may be in a state of communication.

  In the above embodiment, the controller 60 makes the first consumption amount and the second consumption amount different from each other based on the viscosity of the white ink and the magenta ink. However, the controller 60 is not limited to this. Absent. For example, the first consumption amount and the second consumption amount may be made different from each other based on other characteristics different from the viscosity of the white ink and the magenta ink.

  However, since the viscosity is more closely related to the degree of ink flow, the above-described embodiment based on the viscosity allows an appropriate amount of clear ink to flow into any filling chamber more reliably. desirable.

  In the above embodiment, the clear liquid has been described as an example of the prevention liquid, but the present invention is not limited to this. For example, light cyan ink or light magenta ink may be used.

  In the above embodiment, the prevention liquid that can be filled in the first filling portion (white ink filling chamber 70a) and the prevention liquid that can be filled in the second filling portion (magenta ink filling chamber 70b) are the same liquid ( That is, although the same clear ink is used, the present invention is not limited to this. For example, both inks may be different.

  In the above embodiment, the prevention liquid that can be filled in the first filling portion (white ink filling chamber 70a) and the prevention liquid that can be filled in the second filling portion (magenta ink filling chamber 70b) are the same liquid ( That is, the same clear ink) is used, and each liquid is contained in different ink cartridges (the first clear ink cartridge and the second clear ink cartridge). However, the present invention is not limited to this. The liquid may be stored in a common ink cartridge.

  In the above embodiment, there are two filling portions that can be filled with the recording liquid and the prevention liquid (the white ink filling chamber 70a that can be filled with the white ink and the clear ink, and the magenta ink and the clear ink. However, the present invention is not limited to this, and the present invention can also be applied to the case where the number of the filling portions is three or more. For example, for cyan ink, yellow ink, and black ink, which are recording liquids other than white ink and magenta ink, a filling portion (cyan ink filling chamber) in which cyan ink and clear ink can be filled, yellow ink and clear ink, The present invention can also be applied to a printer provided with a filling portion (yellow ink filling chamber) that can be filled with black and a filling portion (black ink filling chamber) that can be filled with black ink and clear ink (in this case) Any one of the five recording liquids corresponds to the first liquid, and any one of the remaining recording liquids corresponds to the second liquid, and the present invention is applied).

DESCRIPTION OF SYMBOLS 1 Printer, 20 Conveyance unit, 24 Smap roller, 26 Platen, 27 Roll paper holder, 29 Paper pressing roller, 31 Paper feed motor, 32 Ink suction unit, 33 Head cap, 33a Suction chamber, 34 hose, 35 Suction pump, 35a Small roller, 37 flushing box, 40 head unit, 42 head, 44 ink cartridge, 44a ink cartridge for white ink, 44b ink cartridge for first clear ink, 44c ink cartridge for magenta ink, 44d ink cartridge for second clear ink, 46 Traction belt, 47 Guide rail, 48 Carriage, 49 Carriage motor, 50 Detector group, 60 Controller, 61 Interface unit, 62 CPU, 63 Mori, 64 unit control circuit, 70 filling chamber, 70a white ink filling chamber, 70b magenta ink filling chamber, 72 nozzles, 74 pressure chamber, 75 supply path, 76 reservoir, 78 piezo element, 80 first changeover switch, 82 second Changeover switch, 110 computer, S roll paper

Claims (4)

A head for ejecting a plurality of types of recording liquid onto a medium, the first filling being capable of being filled with a first liquid of the plurality of types of recording liquid and a preventing liquid for preventing clogging A head, and a second filling portion capable of being filled with the second liquid of the plurality of types of recording liquid and the prevention liquid;
A first liquid container that contains the first liquid;
A second liquid container for containing the second liquid;
A prevention liquid container for containing the prevention liquid;
A first for selecting a first communication state in which the prevention liquid container and the first filling part communicate with each other and a second communication state in which the first liquid container and the first filling part communicate with each other. A selection section;
A second selection for selecting a third communication state in which the prevention liquid container and the second filling portion communicate with each other and a fourth communication state in which the second liquid container and the second filling portion communicate with each other. And
By operating the first selection unit to shift from the second communication state to the first continuous state, the liquid is consumed from the first filling unit, thereby causing the first filling unit to contain the prevention liquid. A first treatment to flow in, and
The liquid is consumed from the second filling unit after the second selection unit is operated to shift from the fourth communication state to the third communication state, whereby the prevention liquid is supplied to the second filling unit. A controller that performs a second process to be introduced; and
A liquid ejecting apparatus comprising:
The liquid ejecting apparatus, wherein the controller makes a first consumption amount of the liquid when the first process is executed different from a second consumption amount of the liquid when the second process is executed. . The liquid ejecting apparatus according to claim 1,
The first continuous state is a state in which both the first liquid container and the prevention liquid container are in communication with the first filling portion.
The second communication state is a state in which only the first liquid container and the first filling portion communicate with each other,
The third communication state is a state where both the second liquid container and the prevention liquid container are in communication with the second filling portion,
The fourth communication state is a state in which only the second liquid container and the second filling portion are in communication with each other. The liquid ejecting apparatus according to claim 1 or 2,
The liquid ejecting apparatus according to claim 1, wherein the controller makes the first consumption amount and the second consumption amount different from each other based on the viscosities of the first liquid and the second liquid. First filling that is provided in a head for ejecting a plurality of types of recording liquid onto a medium and that can be filled with a first liquid of the plurality of types of recording liquid and a preventing liquid for preventing clogging. A first continuous state in which the portion and the prevention liquid container communicate with each other;
The first selection unit for selecting the second communication state in which the first filling unit and the first liquid container communicate with each other is operated to shift from the second communication state to the first continuous state. Performing a first process of causing the prevention liquid to flow into the first filling unit by consuming a first consumption of liquid from the first filling unit after
A third communication state in which the second filling portion provided in the head and capable of filling the second liquid of the plurality of types of recording liquid and the prevention liquid is in communication with the prevention liquid container; ,
The second selection unit for selecting the fourth communication state in which the second filling unit and the second liquid container communicate with each other is operated to shift from the fourth communication state to the third communication state. Performing a second process of causing the prevention liquid to flow into the second filling portion by consuming a second consumption amount different from the first consumption amount later from the second filling portion;
An inflow treatment method characterized by comprising:

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