JP2012000777A - Liquid ejection apparatus and system, and method of controlling the liquid ejection apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid ejection apparatus for stably ejecting an ink considering ink manufacturing information at the time of manufacturing, and to provide the liquid ejection apparatus and a method of manufacturing the liquid ejection apparatus.SOLUTION: The liquid ejection apparatus 1 includes: a liquid storage means; a pressure generation chamber for connecting the liquid from the liquid storage means into a nozzle opening; a pressure generation means for generating pressure in the pressure generation chamber; and a drive signal delivery means for generating and delivering the drive signal for driving the pressure generation means for generating pressure in the pressure generation chamber. The drive signal delivery means includes: a position information acquisition means 201 for acquiring position information of a current position of the liquid ejection apparatus; and a drive wave form forming means 202 for acquiring atmospheric pressure information at a present time in the current position of the liquid ejection apparatus according to the position information, and for correcting a reference drive wave form, which is a drive wave of the drive signal to be a reference signal, and for generating a correction drive wave form in accordance with the difference between the acquired atmospheric pressure information and atmospheric pressure information, which is the atmospheric pressure information at the time of manufacturing, which has been recorded in a recording means provided the liquid.

Description

  The present invention relates to a liquid ejecting apparatus, a liquid ejecting system, and a method for controlling the liquid ejecting apparatus.

Conventionally, as a liquid ejecting apparatus having a liquid ejecting head for ejecting liquid droplets, an ink jet recording head that generates pressure in a pressure generating chamber by pressure generating means and ejects ink droplets from a nozzle opening communicating with the pressure generating chamber. An ink jet recording apparatus including In such an ink jet recording apparatus, there are cases where desired ejection characteristics cannot be obtained due to various factors. For example, the ejection characteristics of ink change depending on the pressure difference in the installation environment.

For this reason, conventionally, there has been known an inkjet head drive control method capable of changing the drive voltage of the drive signal for driving the pressure generating means based on the atmospheric pressure of the installed environment and ejecting ink in a suitable state. (For example, refer to Patent Document 1).

JP-A-11-286109 (Claim 1, paragraph 0009, etc.)

According to the invention described in Patent Document 1, ink can be ejected in a suitable state in consideration of the difference in atmospheric pressure in the installation environment. However, even if the atmospheric pressure in the installation environment is the same, if there is a large difference between the atmospheric pressure in manufacturing the ink cartridge that is the ink storage means and the atmospheric pressure in the usage environment, the gas present in the ink will precipitate in the usage environment. It becomes a bubble. In addition, there is a problem that pressure fluctuations are suppressed by the bubbles and ink ejection becomes unstable.

That is, since the ink cartridge is degassed and sealed at the time of manufacture, the pressure state at the time of manufacture is maintained inside until the ink cartridge is used. In this case, if the installation environment is at a high altitude, for example, when it is installed at a position where the atmospheric pressure is lower than at the time of manufacture, the gas present in the ink is generated as bubbles and the pressure fluctuation in the pressure generation chamber is reduced. In some cases, the ejection is disturbed and the ejection becomes unstable.

Such a problem is not limited to the ink jet recording apparatus, and is a problem that occurs in the entire liquid ejecting apparatus.

Accordingly, an object of the present invention is to solve the above-described problems of the prior art, and a liquid ejecting apparatus, a liquid ejecting system, and a liquid ejecting apparatus that can stably discharge ink in consideration of ink manufacturing information at the time of manufacture. It is intended to provide a control method.

The liquid ejecting apparatus of the present invention includes a liquid storing means, a pressure generating chamber communicating with a nozzle opening for ejecting liquid from the liquid storing means, a pressure generating means for generating a pressure in the pressure generating chamber,
A liquid ejecting apparatus comprising drive signal sending means for forming and sending a drive signal for driving the pressure generating means to generate pressure in the pressure generating chamber, wherein the drive signal sending means includes the liquid jet Position information acquisition means for acquiring position information of the current position of the apparatus; and, at the current position of the liquid ejecting apparatus, pressure information at the current position is acquired according to the position information; the acquired pressure information; and the liquid storage According to the difference from the production-time pressure information, which is the production-time pressure information recorded in the recording means provided in the means, the reference drive waveform, which is the drive waveform of the reference drive signal, is corrected and corrected drive Drive waveform forming means for forming a waveform. According to the liquid ejecting apparatus of the present invention, the drive waveform can be determined according to the difference between the current atmospheric pressure and the production-time atmospheric pressure information, so that stable ejection can be realized.

Preferably, the drive waveform forming unit forms the corrected drive waveform so that the ink discharge amount decreases as the difference between the atmospheric pressure information and the manufacturing-time atmospheric pressure information increases. By forming the correction drive waveform in this manner, it is possible to reduce the influence on the pressure fluctuation caused by the bubbles and realize stable ejection.

Here, the position information acquiring unit acquires the position information by a global positioning system receiver provided in the liquid ejecting apparatus, or the position information acquiring unit is an address input to the liquid ejecting apparatus. It is preferable to acquire the position information from information.

The liquid ejecting system of the present invention includes a liquid storing means, a pressure generating chamber communicating with a nozzle opening for ejecting the liquid from the liquid storing means, and a pressure generating means for generating a pressure in the pressure generating chamber. A liquid ejecting apparatus having a head; and a drive signal sending means for forming a drive signal for driving the pressure generating means to generate a pressure in the pressure generating chamber. Position information acquisition means for acquiring position information of the current position, and the current pressure information at the current position of the liquid ejecting apparatus according to the position information, and the acquired pressure information and the liquid storage means A reference driving waveform which is a driving waveform of the driving signal serving as a reference in accordance with a pressure difference with manufacturing pressure information which is information on manufacturing pressure recorded in the recording means provided. Characterized in that it comprises a driving waveform forming means for forming a correction drive waveform correction to. As a result, the drive waveform can be determined according to the difference between the current atmospheric pressure and the production atmospheric pressure information, so that stable ejection can be realized.

The method for controlling a liquid ejecting apparatus according to the present invention includes: a liquid storing unit; a pressure generating chamber communicating with a nozzle opening that ejects liquid from the liquid storing unit; and a pressure generating unit that generates pressure in the pressure generating chamber. A method of driving a liquid ejecting apparatus having a liquid ejecting head, comprising: obtaining position information of a current position of the liquid ejecting apparatus; and information on atmospheric pressure at a current position of the liquid ejecting apparatus according to the position information According to the pressure difference between the acquired atmospheric pressure information and the production-time atmospheric pressure information which is the information on the production-time atmospheric pressure recorded in the recording means provided in the liquid storage means. A correction drive waveform is formed by correcting a reference drive waveform that is a drive waveform of the drive signal. As a result, the drive waveform can be determined according to the difference between the current atmospheric pressure and the production atmospheric pressure information, so that stable ejection can be realized.

1 is a schematic diagram of a recording apparatus according to Embodiment 1 of the present invention. FIG. 2 is an exploded perspective view of a recording head according to Embodiment 1 of the invention. 2A and 2B are a plan view and a cross-sectional view of the recording head according to Embodiment 1 of the invention. The block diagram which shows the structure of the drive signal transmission means which concerns on Embodiment 1 of this invention. It is a conceptual diagram which shows the relationship between an atmospheric pressure difference and a drive signal waveform. It is a conceptual diagram which shows a drive signal waveform.

(Embodiment 1)
FIG. 1 is a schematic perspective view of an ink jet recording apparatus which is an example of a liquid ejecting apparatus according to Embodiment 1 of the invention. In the ink jet recording apparatus I of the present invention, as shown in FIG. 1, an ink jet recording head (hereinafter also referred to as a recording head) 1 that is an example of a liquid ejecting head that ejects ink droplets is fixed to a carriage 2. .

An ink cartridge 3 that is an example of a liquid storage unit that stores ink is detachably fixed to the recording head 1. In this embodiment, the ink cartridge 3 is provided for each of a plurality of different colors such as black (B), light black (LB), cyan (C), magenta (M), and yellow (Y). The ink cartridge 3 is provided with recording means (for example, a memory) for recording manufacturing air pressure information, which is air pressure information at the time of manufacturing the ink cartridge 3, which will be described in detail later. The recording means uses a memory in this embodiment, but is not limited to this, and may be a two-dimensional information recording medium such as a barcode.

A carriage 2 on which the recording head 1 is mounted is provided on a carriage shaft 5 attached to the apparatus main body 4 so as to be movable in the axial direction. Then, the driving force of the driving motor 6 is transmitted to the carriage 2 via a plurality of gears and a timing belt 7 (not shown), so that the carriage 2 is moved along the carriage shaft 5. On the other hand, the apparatus body 4 is provided with a platen 8 along the carriage shaft 5, so that a recording medium S such as paper fed by a paper feeding device (not shown) is conveyed on the platen 8. ing.

(Liquid jet head)
FIG. 2 is an exploded perspective view showing a schematic configuration of the recording head 1, and FIG. 3 is a plan view of FIG. 2 and a cross-sectional view taken along line AA ′.

As shown in FIGS. 2 and 3, an elastic film 50 is formed on one surface of the flow path forming substrate 10 of the present embodiment. The flow path forming substrate 10 is made of, for example, a silicon single crystal substrate. A plurality of pressure generating chambers 12 are arranged in parallel in the width direction of the flow path forming substrate 10. In addition, a communication portion 13 is formed in a region outside the longitudinal direction of the pressure generation chamber 12 of the flow path forming substrate 10, and the communication portion 13 and each pressure generation chamber 12 are provided for each pressure generation chamber 12. Supply path 14 and communication path 15
It is communicated through. The communicating portion 13 communicates with a manifold portion 31 of a protective substrate, which will be described later, and constitutes a part of the manifold 100 that becomes a common ink chamber for each pressure generating chamber 12. The ink supply path 14 is formed with a narrower width than the pressure generation chamber 12, and maintains a constant flow path resistance of ink flowing into the pressure generation chamber 12 from the communication portion 13. In this embodiment,
Although the ink supply path 14 is formed by narrowing the width of the flow path from one side, the ink supply path may be formed by narrowing the width of the flow path from both sides. Further, the ink supply path may be formed by narrowing from the thickness direction instead of narrowing the width of the flow path.

Further, on the opening surface side of the flow path forming substrate 10, a nozzle plate 20 having a nozzle opening 21 communicating with the vicinity of the end of each pressure generating chamber 12 on the side opposite to the ink supply path 14 is provided with an adhesive. Or a heat-welded film or the like. The nozzle plate 20 is made of, for example, glass ceramics, a silicon single crystal substrate, stainless steel, or the like.

On the other hand, on the side opposite to the opening surface of the flow path forming substrate 10 as described above, the elastic film 5 is provided.
0 is formed. Examples of the elastic film 50 include a silicon dioxide film. On the elastic film 50, for example, an insulator film 55 made of zirconium oxide (ZrO ₂ ) is formed. Further, on the insulator film 55, the first electrode 60 and a thickness of 10 μm or less,
A piezoelectric layer 70 of a thin film preferably having a thickness of 0.3 to 1.5 μm and the second electrode 80 are laminated to form the piezoelectric element 300.

Here, the piezoelectric element 300 refers to a portion including the first electrode 60, the piezoelectric layer 70, and the second electrode 80. In general, one electrode of the piezoelectric element 300 is used as a common electrode, and the other electrode and the piezoelectric layer 70 are patterned for each pressure generating chamber 12. In this embodiment, the first
Although the electrode 60 is a common electrode of the piezoelectric element 300 and the second electrode 80 is an individual electrode of the piezoelectric element 300, there is no problem even if this is reversed for the convenience of the drive circuit and wiring. In addition, the piezoelectric active part 3 which becomes a substantial driving part of the piezoelectric element 300 by the end part in the longitudinal direction of the second electrode 80.
Twenty longitudinal ends (length) are defined. Further, the pressure generation chamber 12 of the second electrode 80.
The short-side end of the piezoelectric active portion 320 is provided in a region opposite to the pressure generating chamber 12 by the short-side end of the second electrode 80. Part (width) is specified. That is, the piezoelectric active portion 320 is provided only in a region opposite to the pressure generation chamber 12 with the end portion in the longitudinal direction and the end portion in the short direction defined by the patterned second electrode 80. .

The piezoelectric layer 70 is made of, for example, a complex oxide having a perovskite structure. The piezoelectric layer 70 is a thin film having a thickness of 0.5 to 1.5 μm. In this embodiment, as will be described later, a plurality of piezoelectric precursor films are laminated and heated by a sol-gel method.

Each second electrode 80 that is an individual electrode of the piezoelectric element 300 is drawn from the vicinity of the end on the ink supply path 14 side and extended to the insulator film 55, for example, gold (Au). The lead electrode 90 which consists of etc. is connected.

On the flow path forming substrate 10 on which such a piezoelectric element 300 is formed, that is, the first electrode 60.
On the insulator film 55 and the lead electrode 90, the protective substrate 30 having the manifold portion 31 constituting at least a part of the manifold 100 is bonded via the adhesive 35. In this embodiment, the manifold portion 31 penetrates the protective substrate 30 in the thickness direction and is formed across the width direction of the pressure generating chamber 12. As described above, the communication portion 13 of the flow path forming substrate 10. The manifold 100 is configured as a common ink chamber for the pressure generation chambers 12. Further, the communication portion 13 of the flow path forming substrate 10 may be divided into a plurality of pressure generation chambers 12, and only the manifold portion 31 may be used as the manifold 100. Further, for example, the flow path forming substrate 10
Provided only with the pressure generating chamber 12 and a member (between the flow path forming substrate 10 and the protective substrate 30) (
For example, the ink supply path 14 that communicates the manifold 100 and each pressure generating chamber 12 may be provided in the elastic film 50).

A piezoelectric element holding portion 32 having a space that does not hinder the movement of the piezoelectric element 300 is provided in a region of the protective substrate 30 that faces the piezoelectric element 300. Piezoelectric element holder 32
Need only have a space that does not hinder the movement of the piezoelectric element 300, and the space may or may not be sealed.

As such a protective substrate 30, it is preferable to use substantially the same material as the coefficient of thermal expansion of the flow path forming substrate 10, for example, glass, ceramic material, etc. In this embodiment, the same material as the flow path forming substrate 10 is used. The silicon single crystal substrate was used.

The protective substrate 30 is provided with a through hole 33 that penetrates the protective substrate 30 in the thickness direction. The vicinity of the end portion of the lead electrode 90 drawn from each piezoelectric element 300 is provided so as to be exposed in the through hole 33.

A driving circuit 12 for driving the piezoelectric elements 300 arranged side by side on the protective substrate 30.
0 is fixed. For example, a circuit board or a semiconductor integrated circuit (IC) can be used as the drive circuit 120. The drive circuit 120 and the lead electrode 90 are electrically connected via a connection wiring 121 made of a conductive wire such as a bonding wire. In detail, a drive signal is input to the drive circuit 120 from a drive signal sending means described later, and this drive signal is input to the lead electrode 90 through the connection wiring 121.

In addition, a compliance substrate 40 including a sealing film 41 and a fixing plate 42 is bonded onto the protective substrate 30. Here, the sealing film 41 is made of a material having low rigidity and flexibility, and one surface of the manifold portion 31 is sealed by the sealing film 41.
The fixing plate 42 is formed of a relatively hard material. Since the region of the fixing plate 42 facing the manifold 100 is an opening 43 that is completely removed in the thickness direction,
One surface of the manifold 100 is sealed only with a flexible sealing film 41.

In such an ink jet recording head of this embodiment, ink is taken in from an ink introduction port connected to an external ink supply means (not shown), and the interior from the manifold 100 to the nozzle opening 21 is filled with ink, and then the drive circuit In accordance with a drive signal from 120, a voltage is applied between each of the first electrode 60 and the second electrode 80 corresponding to the pressure generation chamber 12,
By bending and deforming the elastic film 50, the insulator film 55, the first electrode 60, and the piezoelectric layer 70, the pressure in each pressure generation chamber 12 is increased and ink droplets are ejected from the nozzle openings 21.

The drive signal sending means will be described below with reference to FIG. The drive signal sending means 200 includes:
It is provided in the ink jet recording apparatus I. When the data indicating the printing content is input, the drive signal sending means 200 grasps the position where the ink jet recording apparatus I is installed, forms an appropriate drive signal, and sends the drive signal to the drive circuit 120. Is.

The reason why the drive signal is changed according to the installation position in this way is as follows. That is, if the atmospheric pressure at the time of manufacturing the ink cartridge 3 and the atmospheric pressure at the time of use when performing liquid ejection using the ink cartridge 3 are substantially the same, the gas in the ink does not become a bubble. The ink jet recording apparatus I can realize desired ejection characteristics.

However, when the ink jet recording apparatus is installed at a place where the atmospheric pressure is considerably lower than that at the time of manufacturing the ink cartridge 3, for example, an ink jet recording apparatus is installed at a high altitude
The gas present in the ink tends to be bubbles, that is, the gas is deposited as bubbles when the gas is supersaturated. Then, the bubbles may disturb the pressure fluctuation in the pressure generation chamber 12 and the ink discharge may become unstable. Therefore, in the present embodiment, the atmospheric pressure information is obtained from the position information, and the difference between the atmospheric pressure during use and the atmospheric pressure during manufacture of the ink cartridge 3 is calculated.
The reference drive waveform is corrected from the atmospheric pressure difference to form an appropriate drive signal.
With this configuration, when the atmospheric pressure difference is large, by correcting the ink ejection amount to be small, inhibition of pressure fluctuation due to bubbles can be suppressed, and stable ejection characteristics can be obtained.

Specifically, the drive signal sending unit 200 includes a position information acquisition unit 201 and a drive waveform forming unit 202. The position information acquisition unit 201 acquires the installation position of the ink jet recording apparatus I. In this embodiment, the position information acquisition unit 201 acquires position information from a GPS (Global Positioning System) receiver (reception unit) 203 provided in the ink jet recording apparatus I. The position information here refers to the latitude, longitude, and altitude of the place where the ink jet recording apparatus I is installed.

The drive waveform forming means 202 forms a signal indicating the drive waveform to drive the drive circuit 120 of each head.
Send to. In the present embodiment, the drive waveform forming unit 202 includes the position information acquisition unit 20.
On the basis of the position information acquired from 1, an appropriate drive waveform at the place where the ink jet recording apparatus I is installed is formed.

Position information is input from the position information acquisition unit 201 to the drive waveform forming unit 202. When the position information is input, the driving waveform forming unit 202 accesses the weather information database 204 and obtains weather information. The weather information database 204 is a database in which weather information is recorded, and the weather information is updated every day or every hour. Examples of the weather information include ground weather map data as barometric pressure information and high-rise weather map data. In the present embodiment, the weather information obtained is data representing the ground weather map. The ground weather chart is a diagram showing the distribution of atmospheric pressure at each point at 0 meters above the ground.

Next, the drive waveform forming means 202 obtains the atmospheric pressure at 0 meters above the ground at the time of operation at the current location from the position information and the ground weather map. Then, driving waveform forming means 202
Calculates the atmospheric pressure at the current location from the atmospheric pressure at 0 meters above the ground and the altitude in the position information.

Next, the drive waveform forming unit 202 is a recording unit 205 provided in the ink cartridge 3.
The atmospheric pressure information at the time of manufacture, which is the atmospheric pressure information at the time of manufacturing the ink cartridge recorded in (1) is acquired. Examples of the recording means 205 include a memory and a two-dimensional recording medium such as a barcode. Then, the pressure difference is calculated by subtracting the manufacturing pressure information from the calculated pressure.
In addition, the time when the ink cartridge is manufactured refers to the time when the ink cartridge 3 is manufactured and then deaerated and then sealed with a film or the like.

When this pressure difference is 0 or plus, bubbles are not generated. However, when the pressure difference is minus, bubbles are generated. Therefore, the drive waveform forming means 202 determines the reference drive waveform based on this pressure difference. Correct. That is, as shown in FIG. 5, the amplitude of the drive waveform (voltage difference, that is, the height of the trapezoidal wave) is obtained based on the pressure difference (in this case, the pressure difference is an absolute value), and the amplitude of this drive waveform. The reference drive waveform is corrected so that the drive waveform is formed. In this case, as shown in FIG. 5, the larger the pressure difference, the smaller the amplitude, that is, the smaller the discharge amount.

The correction drive waveform obtained in this way is as shown in FIG. FIG. 6A shows a reference drive waveform, that is, a trapezoidal wave serving as a reference when the atmospheric pressure difference is 0, and the drive waveform amplitude is D. When the atmospheric pressure difference is V1, the amplitude of the driving waveform is d1 from FIG. 5, and in this case, the amplitude of the trapezoidal wave is d1 as shown in FIG. 6B. Thus, as the pressure difference increases, the amplitude of the drive waveform is set to be small, that is, the discharge amount is reduced, thereby suppressing the influence of pressure fluctuations caused by bubbles and stabilizing ink discharge.

Finally, the drive waveform forming unit 202 sends a signal indicating the corrected drive waveform obtained by correcting the reference drive waveform to the drive circuit 120 as a drive signal. As a result, the recording head 1
Can stably discharge ink while suppressing the influence of pressure fluctuation caused by bubbles. If the drive signal is set to be small and the ink discharge amount is set to be small,
What is necessary is just to make the frequency | count of discharge several times so that it may become the desired ink discharge amount before correction | amendment.

Incidentally, when the barometer is provided in the ink jet recording apparatus I instead of providing the position information acquisition means 201, there is a problem that the ink jet recording apparatus I becomes large, so as shown in the present embodiment, It is preferable to use position information to obtain the atmospheric pressure.

The present invention is not limited to the embodiment described above. For example, in the present embodiment, the manufacturing condition is recorded in each ink cartridge 3, but the present invention is not limited to this. For example, the air pressure conditions at the time of manufacture of the ink cartridge 3 are all made the same or substantially the same in advance, and the air pressure conditions at the time of manufacture are recorded in the ink jet recording apparatus I as the manufacture-time air pressure information as default values. In addition, the atmospheric pressure difference may be obtained from the atmospheric pressure information at the time of manufacture and the acquired atmospheric pressure information.

Further, for example, a personal computer (PC) is connected to the ink jet recording apparatus I, and a drive signal sending means 200 is provided in the personal computer to form a drive waveform.
You may comprise so that the signal by this drive waveform may be input into the recording head 1 of the inkjet recording device I as a drive signal. Further, only the drive waveform forming means 202 may be installed in a personal computer.

In the above-described embodiment, the drive waveform amplitude is set based on the atmospheric pressure difference. However, the drive waveform amplitude is not limited to the drive waveform amplitude, and the drive waveform width is changed based on the atmospheric pressure difference. Also good. That is, the width of the drive waveform may be reduced as the pressure difference increases within a range where the ink discharge weight can be reduced. Even in this case, it is possible to reduce the ink discharge amount, and thereby it is possible to stably discharge ink by suppressing the pressure fluctuation due to the bubbles even if the pressure difference is large.

In the above-described embodiment, the drive waveform amplitude is set based on the atmospheric pressure difference, but the drive waveform deformation rate is set, and the drive waveform is formed based on the deformation rate. Good. For example, the amplitude of the drive waveform may be changed based on the deformation rate based on the atmospheric pressure difference. Furthermore, the amplitude of the drive waveform and the width may be corrected simultaneously within a range where the ink ejection weight can be reduced.

Further, the amplitude of the drive waveform may be appropriately changed according to the shape of the drive waveform. For example, in the present embodiment, a trapezoidal wave is shown as the drive waveform. However, if the drive waveform is a triangular wave, the amplitude of the triangular wave may be set based on the atmospheric pressure difference.

In the above-described embodiment, the position information is acquired by the GPS receiver 203, but the present invention is not limited to this. For example, the latitude, longitude, and altitude for each address are recorded in the recording unit in the ink jet recording apparatus I, and when the address information at the address where the ink jet recording apparatus I is installed is input, the latitude, The longitude and altitude may be specified and acquired. Furthermore, the position of the ink jet recording apparatus I may be specified using a mobile phone network.

In the above-described embodiment, the ink jet recording apparatus I is exemplified as the liquid ejecting apparatus of the invention, but the basic configuration of the liquid ejecting apparatus is not limited to the above-described one. The present invention is intended for a wide range of liquid ejecting apparatuses in general, for example, various recording heads used in image recording apparatuses such as printers, color material ejecting heads used in the manufacture of color filters such as liquid crystal displays, The present invention can also be applied to an electrode material ejecting head used for forming an electrode such as an organic EL display and FED (field emission display), a liquid ejecting apparatus using a bio-organic matter ejecting head used for biochip production, and the like.

DESCRIPTION OF SYMBOLS 1 Liquid jet head, 10 Flow path formation board | substrate, 12 Pressure generation chamber, 13 Communication part,
14 ink supply path, 15 communication path, 21 nozzle opening, 30 protective substrate, 3
2 piezoelectric element holding portion, 33 through-hole, 60 first electrode, 70 piezoelectric layer, 80
Second electrode, 90 lead electrode, 100 manifold, 200 drive signal sending means, 201 position information acquisition means, 202 drive waveform forming means

Claims (6)

A liquid storage means, a pressure generation chamber communicating with a nozzle opening for ejecting liquid from the liquid storage means, a pressure generation means for generating pressure in the pressure generation chamber, and the pressure generation chamber for generating pressure in the pressure generation chamber A liquid ejecting apparatus including drive signal sending means for forming and sending a drive signal for driving the pressure generating means,
The drive signal sending means is
Position information acquisition means for acquiring position information of a current position of the liquid ejecting apparatus;
According to the position information, the current atmospheric pressure information at the current position of the liquid ejecting apparatus is acquired, and the acquired atmospheric pressure information and the manufacturing atmospheric pressure recorded in the recording means provided in the liquid storage means Driving waveform forming means for correcting a reference driving waveform that is a driving waveform of the driving signal serving as a reference to form a corrected driving waveform in accordance with a difference from manufacturing-time atmospheric pressure information that is information;
A liquid ejecting apparatus comprising: 2. The liquid ejecting apparatus according to claim 1, wherein the drive waveform forming unit forms a corrected drive waveform so that an ink discharge amount decreases as a difference between the atmospheric pressure information and the manufacturing atmospheric pressure information increases. . The liquid ejecting apparatus according to claim 1, wherein the position information acquiring unit acquires the position information by a global positioning system receiver provided in the liquid ejecting apparatus. The liquid ejecting apparatus according to claim 1, wherein the position information acquiring unit acquires the position information from address information input to the liquid ejecting apparatus. A liquid ejecting apparatus having a liquid ejecting head including: a liquid storing means; a pressure generating chamber communicating with a nozzle opening for ejecting liquid from the liquid storing means; and a pressure generating means for generating a pressure in the pressure generating chamber. ,
Drive signal sending means for forming a drive signal for driving the pressure generating means to generate pressure in the pressure generating chamber;
The drive signal sending means is
Position information acquisition means for acquiring position information of a current position of the liquid ejecting apparatus;
According to the position information, the current atmospheric pressure information at the current position of the liquid ejecting apparatus is acquired, and the acquired atmospheric pressure information and the manufacturing atmospheric pressure recorded in the recording means provided in the liquid storage means Drive waveform forming means for correcting a reference drive waveform that is a drive waveform of the drive signal serving as a reference to form a corrected drive waveform in accordance with a pressure difference with manufacturing-time pressure information that is information;
A liquid ejecting system comprising: A liquid ejecting apparatus having a liquid ejecting head, comprising: a liquid storing means; a pressure generating chamber communicating with a nozzle opening for ejecting liquid from the liquid storing means; and a pressure generating means for generating pressure in the pressure generating chamber. A driving method comprising:
Obtaining position information of a current position of the liquid ejecting apparatus;
According to the position information, the current atmospheric pressure information at the current position of the liquid ejecting apparatus is acquired, and the acquired atmospheric pressure information and the manufacturing atmospheric pressure recorded in the recording means provided in the liquid storage means A control method for a liquid ejecting apparatus, wherein a correction drive waveform is formed by correcting a reference drive waveform that is a drive waveform of the drive signal serving as a reference in accordance with an atmospheric pressure difference from manufacturing atmospheric pressure information that is information .

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