Patent Application
20150352853
The present invention relates to a liquid ejection apparatus and a tank or the like.
An inkjet printer that is one type of a liquid ejection apparatus performs printing on a printing medium such as printing paper by ejecting ink that is one example of a liquid from a liquid ejection head onto the printing medium. A conventionally known configuration of this inkjet printer includes an ink tank provided to store ink. For example, Japanese Laid-Open Patent Application Publication No. 2012-144016A discloses one exemplified configuration of increasing the capacity of an ink tank. In this configuration, in an attitude that ink is ejectable from a liquid ejection head, a liquid level in a liquid chamber is located at a higher position than a nozzle of the liquid ejection head, and a liquid inlet port communicating with the liquid chamber is sealed with a plug member. In order to take the air from outside into the liquid chamber, the other end of a communication path having one end communicating with an air hole is located at a lower position than the nozzle of the liquid ejection head in the liquid chamber. A meniscus is formed in the communication path, so as to stabilize ink supply to the liquid ejection head.
In the attitude that ink is ejectable from the liquid ejection head, at some position of the liquid level, accidental removal of the plug member is likely to make the liquid chamber communicate with the outside air via the liquid inlet port and thereby deteriorate the stability of ink supply to the liquid ejection head.
In the configuration of Japanese Laid-Open Patent Application Publication No. 2012-144016A, the ink tank is placed in a container unit externally attached to a casing of the inkjet printer. In the course of detaching the container unit for the purpose of pouring ink into the ink tank, the liquid inlet port with the plug member placed therein is exposed outside. This configuration is more likely to cause accidental removal of the plug member.
An object of the invention is thus to provide a liquid ejection apparatus that employs an ink tank including a liquid chamber that maintains a liquid level at a higher position than a nozzle of a liquid ejection head and that a plug member placed in a liquid inlet port is unlikely to be accidentally removed.
The invention may be implemented by the following aspects or embodiments.
According to one aspect, there is provided a liquid ejection apparatus. The liquid ejection apparatus may comprise a tank that is configured to contain a liquid; a liquid ejection head that communicates with the tank and is configured to eject the liquid; a casing that is configured to place the tank and the liquid ejection head inside thereof and a cover that is configured to cover the casing. The tank may include a container portion that is configured to contain the liquid, an air introducing path that is arranged to introduce the air into the container portion, an inlet port that is configured to pour the liquid into the container portion, a sealing member that is configured to seal the inlet port, and an outlet port that is formed to supply the liquid through a tube into the liquid ejection head. In an attitude that the liquid is ejectable from the liquid ejection head, the liquid may be contained in the container portion such that a liquid level of the liquid in the container portion is located at a higher position than a nozzle of the liquid ejection head in a vertical direction; an inlet port that is an opening of the air introducing path on a container portion side thereof may be located at a lower position than the nozzle of the liquid ejection head in the vertical direction; and the sealing member may be covered by part of the cover.
In the configuration of this aspect, the casing of the liquid ejection apparatus integrally covers the tank and the liquid ejection head, and additionally the casing also covers the sealing member of the tank. In the attitude of the liquid ejection apparatus that the liquid is ejectable from the liquid ejection head, this configuration reduces the likelihood that the sealing member is accidentally removed by, for example, the operator's improper use. The inlet port configured to introduce the air outside of the tank into the container portion is located at the lower position than the nozzle of the liquid ejection head in the vertical direction. This configuration is more likely to suppress a variation in pressure applied to the liquid flowing out of the tank and thereby facilitates the pressure of the liquid supplied from the tank to the liquid ejection head to be maintained at a constant level.
In the liquid ejection apparatus of the above aspect, the cover may constitute part of a scanner unit.
In this aspect, the cover constitutes part of the scanner unit. This provides the liquid ejection apparatus with a simple configuration including the functions of the scanner.
In the liquid ejection apparatus of the above aspect, the tank may further include an air chamber that communicates with the container portion via the air introducing path, and an air communication port that is formed to introduce the air into the air chamber.
In this aspect, even when the liquid ejection apparatus is inclined to cause the liquid in the container portion to enter the air introducing path, the liquid is retained in the air chamber before being leaked out through the air communication port. This configuration accordingly suppresses leakage of ink from the liquid ejection apparatus.
In the liquid ejection apparatus of the above aspect, the container portion may be extended in a first direction that is a longitudinal direction of the container portion. A dimension of the container portion in the first direction may be longer than a dimension of the container portion in a direction perpendicular to the first direction. At least part of an area of the tank overlapping the container portion may have optical transparency along the first direction. At least an area of the casing overlapping the part of the area of the tank having optical transparency may have optical transparency.
In this aspect, the liquid in the container portion is visible via the area of the tank having optical transparency. The area of the casing having optical transparency overlaps the area of the tank having optical transparency, so that the liquid in the container portion is visible from outside of the casing. The liquid ejection apparatus of this aspect thus enables the liquid in the tank to be visually checked from outside of the casing. Additionally, in this liquid ejection apparatus, at least part of the area of the tank overlapping the container portion has optical transparency along the first direction. Accordingly, this liquid ejection apparatus causes the liquid in the tank to be visible along the longitudinal direction of the container portion. This configuration enables the liquid in the tank to be visually checked over a wide range of the container portion, thus improving the visibility of the liquid.
In the liquid ejection apparatus of the above aspect, the first direction may intersect with a horizontal direction.
In this aspect, the first direction is the direction intersecting with the horizontal direction, so that the container portion is inclined to the horizontal direction. The liquid in the container portion is thus accumulated on one end side of the container portion in the longitudinal direction. This facilitates the remaining amount of the liquid to be visually checked relative to the length of the container portion in the first direction.
In the liquid ejection apparatus of the above aspect, a sectional area of the container portion cut in a direction perpendicular to the first direction may be constant along the first direction.
In this aspect, the sectional area of the container portion cut in the direction perpendicular to the first direction is constant along the first direction. This provides a constant proportionality factor between the amount of consumption of the liquid in the container portion and the amount of displacement of the liquid level. This facilitates prediction of a change in remaining amount of the liquid.
In the liquid ejection apparatus of the above aspect, an optically transparent area of the casing that is the area having optical transparency may be configured on a front side of the liquid ejection apparatus.
In this aspect, the optically transparent area of the casing is configured on the front side of the liquid consuming apparatus. This configuration facilitates the visual recognition by the operator who faces the front of the liquid consuming apparatus.
According to another aspect, in a liquid ejection apparatus that includes a tank that is configured to contain a liquid; a liquid ejection head that communicates with the tank and is configured to eject the liquid; a casing that is configured to place the tank and the liquid ejection head inside thereof and a cover that is configured to cover the casing, there is configured the tank. The tank may comprise a container portion that is configured to contain the liquid; an air introducing path that is arranged to introduce the air into the container portion; an inlet port that is configured to pour the liquid into the container portion; a sealing member that is configured to seal the inlet port; and an outlet port that is formed to supply the liquid through a tube into the liquid ejection head. In an attitude that the liquid is ejectable from the liquid ejection head, the liquid may be contained in the container portion such that a liquid level of the liquid in the container portion is located at a higher position than a nozzle of the liquid ejection head in a vertical direction. In the attitude that the liquid is electable from the liquid ejection head, the sealing member may be covered by part of the cover.
In this aspect, the tank, along with the liquid ejection head, is placed inside of the casing of the liquid ejection apparatus. Additionally, the sealing member of the tank is covered by part of the cover. In the attitude of the liquid ejection apparatus that the liquid is ejectable from the liquid ejection head, this configuration reduces the likelihood that the sealing member is accidentally removed from the tank by, for example, the operator's improper use.
In the tank of the above aspect, in the attitude that the liquid is electable from the liquid ejection head, an inlet port that is an opening of the air introducing path on a container portion side thereof may be located at a lower position than the nozzle of the liquid ejection head in the vertical direction.
In this aspect, the inlet port configured to introduce the air outside of the tank into the container portion is located at the lower position than the nozzle of the liquid ejection head in the vertical direction. This configuration is more likely to suppress a variation in pressure applied to the liquid flowing out of the tank and thereby facilitates the pressure of the liquid supplied from the tank to the liquid ejection head to be maintained at a constant level.
In the tank of the above aspect, the container portion may be extended in a first direction that is a longitudinal direction of the container portion. A dimension of the container portion in the first direction may be longer than a dimension of the container portion in a direction perpendicular to the first direction. At least part of an area of the tank overlapping the container portion may have optical transparency in the first direction. A sectional area of the container portion cut in a direction perpendicular to the first direction may be constant along the first direction.
In this aspect, the sectional area of the container portion cut in the direction perpendicular to the first direction is constant along the first direction. This provides a constant proportionality factor between the amount of consumption of the liquid in the container portion and the amount of displacement of the liquid level. This facilitates prediction of a change in remaining amount of the liquid.
The following describes a multifunction printer as one example of a liquid ejection apparatus according to an embodiment with reference to drawings. The multifunction printer 1 of the embodiment includes a printer 3 and a scanner unit 5 as shown in
The scanner unit 5 is flatbed type having an imaging element (not shown) such as an image sensor, a platen and a cover. The scanner unit 5 is capable of reading an image or the like recorded on a medium such as paper via the imaging element in the form of image data. The scanner unit 5 accordingly serves as a reader of the image or the like. As shown in
The printer 3 performs printing on a printing medium P such as printing paper with ink as one example of liquid. As shown in
The printer 3 also has an operation panel 12. The operation panel 12 is provided with a power button 13A and other operation buttons 13B. An operator who operates the printer 3 faces the operation panel 12 to operate the power button 13A and the operation buttons 13B. A front face of the printer 3 is a surface where the operation panel 12 is provided. The casing 7 has a window 14 provided on the front face of the printer 3. The window 14 has optical transparency. The four tanks 9 described above are placed at a position overlapping the window 14. This configuration enables the operator to observe the four tanks 9 through the window 14.
According to this embodiment, a region of each of the tank 9 facing the window 9 has optical transparency, so that ink contained in the tank 9 is visible through the region of the tank 9 having optical transparency. This enables the operator to observe the four tanks 9 through the window 14 and thereby visually check the amounts of inks remaining in the respective tanks 9. According to this embodiment, the window 14 is provided on the front surface of the printer 3. This configuration enables the operator facing the operation panel 12 to visually recognize the respective tanks 9 through the window 14. This accordingly enables the operator to check the remaining amounts of inks in the respective tanks 9 while operating the printer 3.
As shown in
The printer 3 also has a medium feeding mechanism (not shown) and a head carrying mechanism (not shown). The medium feeding mechanism drives a feed roller 22 by the power from a motor (not shown), so as to feed a printing medium P in the Y-axis direction. The head carrying mechanism transmits the power from a motor 23 via a timing belt 25 to the carriage 17, so as to carry the carriage 17 along the X-axis direction. As described above, the liquid ejection head 19 is mounted on the carriage 17. The liquid ejection head 19 is thus movable in the X-axis direction via the carriage 17 by the head carrying mechanism. The medium feeding mechanism and the head carrying mechanism cause ink to be ejected from the liquid ejection head 19 while changing the position of the liquid ejection head 19 relative to the printing medium P, so as to complete printing on the printing medium P.
The tank 9 has a casing 31 and a sheet member 33 as shown in
The container portion 35 includes first wall 41, a second wall 42, a third wall 43, a fourth wall 44 and a fifth wall 45. The second wall 42, the third wall 43, the fourth wall 44 and the fifth wall 45 are arranged to intersect with the first wall 41 respectively. The second wall 42 and the third wall 43 are located to face each other across the first wall 41 in the Z-axis direction. The fourth wall 44 and the fifth wall 45 are located to face each other across the first wall 41 in the Y-axis direction. The second wall 42 intersects with both the fourth wall 44 and the fifth wall 45. The third wall 43 also intersects with both the fourth wall 44 and the fifth wall 45. In the printer 3 shown in
In the planar view, the first wall 41 shown in
According to this embodiment, in the container portion 35, a length of the fourth wall 44 along the Z-axis direction is longer than a length of the second wall 42 along the Y-axis direction. In other words, in the container portion 35, a dimension along the Z-axis direction is longer than a dimension along a direction perpendicular to the Z-axis direction. The container portion 35 is accordingly in a long shape along the Z-axis direction. The container portion 35 is extended in the Z-axis direction as its longitudinal direction.
The air chamber 37 is provided on an opposite side to a recess 35A-side of the fifth wall 45. The air chamber 37 is protruded from the fifth wall 45 on an opposite side to a fourth wall 44-side of the fifth wall 45, i.e., on a +Y-axis direction side of the fifth wall 45. The air chamber 37 includes a first wall 41, the fifth wall 45, a sixth wall 46, a seventh wall 47, an eighth wall 48, a ninth wall 49 and a tenth wall 50. The first wall 41 of the container portion 35 is identical with the first wall 41 of the air chamber 37. In other words, according to this embodiment, the container portion 35 and the air chamber 37 share the first wall 41. The second wall 42 and the sixth wall 46 are continuous with each other.
The sixth wall 46 is protruded from the fifth wall 45 on the opposite side to the fourth wall 44-side of the fifth wall 45, i.e., on the +Y-axis direction side of the fifth wall 45. The seventh wall 47 is located to face the sixth wall 46 across the first wall 41 of the air chamber 37 in the Z-axis direction. The sixth wall 46 and the seventh wall 47 are thus opposed to each other across the first wall 41 of the air chamber 37 in the Y-axis direction. The eighth wall 48 is located to face the fifth wall 45 across the first wall 41 of the air chamber 37 in the Y-axis direction. The ninth wall 49 is located to face the fifth wall 45 across the first wall 41 of the air chamber 37 in the Y-axis direction, on an opposite side to a sixth wall 46-side of the seventh wall 47, i.e., on a −Z-axis direction side of the seventh wall 47. The ninth wall 49 is located between the fifth wall 45 and the eighth wall 48 in the Y-axis direction. The seventh wall 47 is placed between the eighth wall 48 and the ninth wall 49.
The sixth wall 46 intersects with both the fifth wall 45 and the eighth wall 48. The seventh wall 47 intersects with both the eighth wall 48 and the ninth wall 49. The tenth wall 50 is located to face the sixth wall 46 and the second wall 42 across the first wall 41 of the air chamber 37 in the Z-axis direction, on an opposite side to a sixth wall 46-side of the ninth wall 49, i.e., on a −Z-axis direction side of the ninth wall 49. The tenth wall 50 is protruded from the seventh wall 47 on a fifth wall 45-side of the seventh wall 47, i.e., on a −Y-axis direction side of the seventh wall 47. The tenth wall 50 is arranged to intersect with the fifth wall 45 and to be protruded into the recess 35A. There is a clearance provided between the tenth wall 50 and the fourth wall 44.
In the planar view, the first wall 41 of the air chamber 37 is surrounded by the fifth wall 45, the sixth wall 46, the seventh wall 47, the eighth wall 48, the ninth wall 49 and the tenth wall 50. The fifth wall 45, the sixth wall 46, the seventh wall 47, the eighth wall 48, the ninth wall 49 and the tenth wall 50 are protruded from the first wall 41 in the −X-axis direction. Accordingly, the air chamber 37 is formed in a recessed shape by the first wall 41 as bottom and the fifth wall 45, the sixth wall 46, the seventh wall 47, the eighth wall 48, the ninth wall 49 and the tenth wall 50. A recess 37A of the air chamber 37 is formed by the first wall 41, the fifth wall 45, the sixth wall 46, the seventh wall 47, the eighth wall 48, the ninth wall 49 and the tenth wall 50. The recess 37A is formed to be concave in the +X-axis direction. The recess 37A is open in the −X-axis direction, i.e., on the sheet member 33-side. The recess 35A and the recess 37A are separated from each other by the fifth wall 45. The amounts of protrusion of the second wall 42 to the tenth wall 50 from the first wall 41 are set to an identical protrusion amount, except a cutout 50A of the fifth wall 45. The cutout 50A of the fifth wall 45 is located on the first wall 41-side of a sheet member 33-side end of the fifth wall 45.
An inlet port 61 is provided on the second wall 42. A supply port 63 is provided on the fifth wall 45. An air communication port 67 is provided on the eighth wall 48. The supply port 63 is located between the third wall 43 and the tenth wall 50 in the Z-axis direction. The inlet port 61 and the supply port 63 respectively serve to make outside of the casing 31 communicate with inside of the recess 35A. The air communication port 67 serves to make outside of the casing 31 communicate with inside of the recess 37A. The inlet port 61 is open in the longitudinal direction (Z-axis direction) of the fourth wall 44. The supply port 63 and the air communication port 67 are respectively open in a direction intersecting with the longitudinal direction of the fourth wall 44.
As shown in
As shown in
In the tank 9, as shown in
The amount of the ink 91 in the relay unit 21 decreases with progress in printing by means of the liquid ejection head 19. During this time, the internal pressure of the relay unit 21 decreases to be lower than the atmospheric pressure. When the internal pressure of the relay unit 21 becomes lower than a negative pressure based on a head difference D1 between the tank 9 and the liquid ejection head 19, the ink 91 in the recess 35A is supplied through the supply tube 16 into the relay unit 21 due to this pressure difference. The head difference D1 corresponds to a difference in height in the vertical direction between an ink surface adjacent to the air chamber 37 in the tank 9 (in this embodiment, a surface 50B of the tenth wall 50 facing the second wall 42) and the nozzle 20 of the liquid ejection head 19.
According to this embodiment, the surface 50B is located vertically below a lower limit line LM1 indicating a lower limit of the amount of the ink 91 in the tank 9. The surface 50B is also located vertically above the supply port 63. In the state that a liquid level 91A of the ink 91 in the recess 35A is located between an upper limit line LM2 indicating an upper limit of the amount of the ink 91 in the tank 9 and the lower limit line LM1, this configuration reduces a variation in head difference D1 accompanied with a change in position of the liquid level 91A. As a result, this makes the ink 91 likely to be supplied stably to the liquid ejection head 19. This configuration is also likely to lower the height position in the vertical direction of the liquid ejection head 19 relative to the tank 9. Accordingly, this is likely to reduce the height dimension of the printer 3 in a configuration that the long tank 9 is stood in the vertical direction. This results in downsizing the printer 3 and the multifunction printer 1.
The amount of the ink 91 in the recess 35A decreases with progress in printing by means of the liquid ejection head 19. During this time, the internal pressure of the recess 35A decreases to be lower than the atmospheric pressure. When the internal pressure of the recess 35A becomes lower than the atmospheric pressure, the air 97 in the recess 37A is flowed through the communication path 81 into the recess 35A. The internal pressure of the recess 35A is thus more likely to be maintained at the atmospheric pressure. In the communication path 81, a meniscus is formed on the boundary between the ink 91 on the recess 35A-side and the air on the recess 37A-side. This suppresses the ink 91 in the recess 35A from being flowed into the recess 37A.
The ink 91 in the tank 9 is thus supplied to the liquid ejection head 19 as described above. When the ink 91 in the recess 35A of the tank 9 is consumed and the remaining amount of the ink 91 reaches the lower limit, the operator is allowed to refill the tank 9 with ink newly supplied from the inlet port 61. In the course of newly pouring ink into the tank 9, the air communication port 67 is closed, and the ink flow path from the supply port 63 to the nozzle 20 of the liquid ejection head 19 is closed. This suppresses the poured ink from flowing through the communication path 81 into the air chamber 37 (recess 37A) in the course of newly pouring the ink into the tank 9. This also suppresses the poured ink from flowing out of the supply port 63 toward the liquid ejection head 19 in the course of newly pouring the ink into the tank 9. When the amount of ink poured from the inlet port 61 reaches the upper limit in the container portion 35, the operator places the plug 93 in the inlet port 61 and subsequently opens the air communication port 67 and the ink flow path from the supply port 63 to the nozzle 20 of the liquid ejection head 19.
In the attitude of the printer 3 that a liquid is ejectable from the liquid ejection head 19, the plug 93 placed in the inlet port 61 is covered by the cover of the printer 3. This configuration reduces the likelihood that the plug 93 is accidentally removed by, for example, the operator's improper use.
According to this embodiment, the scanner unit 5 or the cover of the printer 3 corresponds to the cover. The plug 93 corresponds to the sealing member. The supply tube 16 corresponds to the tube. The Z-axis direction corresponds to the first direction. The supply port 63 corresponds to the outlet port. The communication path 81 corresponds to the air introducing path.
According to this embodiment, the ink in the container portion 35 is visible through the fourth wall 44 of the tank 9. The window 14 provided in the casing 7 of the printer 3 is located to overlap the fourth wall 44 of the tank 9, so that the ink in the container portion 35 is visible from outside of the casing 7. In this printer 3, this enables the ink in the tank 9 to be visually checked from outside of the casing 7. Additionally, in this printer 3, the longitudinal direction of the container portion 35 is the Z-axis direction. Accordingly, in this printer 3, the ink in the tank 9 is visible from outside of the casing 7 along the longitudinal direction of the container portion 35. This configuration allows the operator to visually check the ink in each tank 9 over the wide range of the container portion 35, thus improving the visibility of ink.
According to this embodiment, in the use state of the printer 3, the Z-axis direction intersects with the horizontal direction. In the attitude that the Z-axis direction intersects with the horizontal direction, the longitudinal direction of the container portion 35 is inclined to the horizontal direction. When the Z-axis direction is the vertical direction, the longitudinal direction of the container portion 35 is perpendicular to the horizontal direction. The ink in the container portion 35 is accordingly accumulated on one end side of the container portion 35 in the longitudinal direction. This facilitates the remaining amount of ink to be visually checked relative to the length of the container portion 35 in the Z-axis direction. In the attitude that the Z-axis direction intersects with the horizontal direction, consumption of a fixed amount of ink 91 provides a larger amount of displacement of the liquid level 91A, compared with in the attitude that the Z-axis direction is along the horizontal direction (i.e., the attitude that the longitudinal direction is the horizontal direction). This is attributed to a difference in sectional area of the container portion 35 in the horizontal direction. In the attitude that the Z-axis direction intersects with the horizontal direction, the remaining amount of ink is more readily recognizable with the eye, compared with the attitude that the Z-axis direction is along the horizontal direction.
A printer 3 according to a second embodiment has four tanks 101 as shown in
When the tank 101 is rotated in the direction R1, the attitude of the tank 101 is changed as shown in
As shown in
In the longitudinal direction (Z-axis direction) of the fourth wall 44, the sixth wall 46 is located on a third wall 43-side of the second wall 42. In the longitudinal direction of the fourth wall 44, an inlet port 61 is provided in the fifth wall 45 arranged to connect the second wall 42 with the sixth wall 46. According to the second embodiment, the inlet port 61 is open in a direction intersecting with the longitudinal direction of the fourth wall 44. The sheet member 105 has a similar configuration to that of the sheet member 33 except a portion formed to along the step between the second wall 42 and the sixth wall 46. The supply of ink from the tank 101 to the liquid ejection head 19 and the head difference D1 of the second embodiment are similar to those of the first embodiment and are not specifically described here.
According to the second embodiment, when ink is newly poured into the tank 101, the tank 101 is maintained in an attitude that the longitudinal direction of the fourth wall 44 and the vertical direction (Z-axis direction) intersect with each other (hereinafter called pouring attitude) as shown in
In the attitude of the printer 3 that a liquid is ejectable from the liquid ejection head 19, the plug 93 placed in the inlet port 61 is covered by the cover of the printer 3. This configuration reduces the likelihood that the plug 93 is accidentally removed by, for example, the operator's improper use.
With regard to the tank 9 or the tank 101, the sectional area of the container portion 35 in the horizontal direction (XY plane) is preferably constant from the upper limit line LM2 to the lower limit line LM1 in the vertical direction. This configuration provides a constant proportionality factor between the amount of consumption of the ink 91 in the container portion 35 and the amount of displacement of the liquid level 91A. The constant proportionality factor between the amount of consumption of the ink 91 in the container portion 35 and the amount of displacement of the liquid level 91 facilitates a change in the remaining amount of the ink 91 in the container portion 35 to be accurately recognized. In the use attitude, the configuration of the container portion 35 is not limited to the configuration described in the first embodiment or the second embodiment, as long as the sectional area of the container portion 35 in the horizontal direction (XY plane) is constant from the upper limit line LM2 to the lower limit line LM1 in the vertical direction. As long as the sectional area of the container portion 35 is constant in the use attitude, the container portion 35 may employ a configuration that the fourth wall 44 and the fifth wall 45 are formed by curved surfaces as shown in
In the respective embodiments described above, when the liquid ejection apparatus has the functions of the printer 3 but does not have the functions of the scanner unit 5, the cover of the printer 3 arranged to cover the plug 93 may have any configuration that covers the casing 7. In this modified application, the casing 7 may be formed integrally with the cover of the printer 3.
In the respective embodiments described above, the liquid ejection apparatus may be a liquid ejection apparatus that sprays, ejects or applies and thereby consumes a liquid other than ink. The liquid ejected in the form of very small amounts of droplets from the liquid ejection apparatus may be in a granular shape, a teardrop shape or a tapered threadlike shape. The liquid herein may be any material consumed in the liquid ejection apparatus. The liquid may be any material in the liquid phase and may include liquid-state materials of high viscosity or low viscosity, sols, aqueous gels and other liquid-state materials including inorganic solvents, organic solvents, solutions, liquid resins and liquid metals (metal melts). The liquid is not limited to the liquid state as one of the three states of matter but includes solutions, dispersions and mixtures of the functional solid material particles, such as pigment particles or metal particles, solved in, dispersed in or mixed with a solvent. Typical examples of the liquid include ink described in the above embodiments and liquid crystal. The ink herein includes general water-based inks and oil-based inks, as well as various liquid compositions, such as gel inks and hot-melt inks. A concrete example of the liquid consuming apparatus may be a liquid ejection apparatus that ejects a liquid in the form of a dispersion or a solution containing a material such as an electrode material or a color material used for production of liquid crystal displays, EL (electroluminescent) displays, surface emission displays and color filters. The liquid ejection apparatus may also be a liquid ejection apparatus that ejects a bioorganic material used for manufacturing biochips, a liquid ejection apparatus that is used as a precision pipette and ejects a liquid as a sample, a printing apparatus or a microdispenser. Additionally, the liquid ejection apparatus may be a liquid ejection apparatus for pinpoint ejection of lubricating oil on precision machines such as machines and cameras or a liquid ejection apparatus that ejects a transparent resin solution of, for example, an ultraviolet curable resin, onto a substrate to manufacture a hemispherical microlens (optical lens) used for optical communication elements and the like. As another example, the liquid ejection apparatus may be a liquid ejection apparatus that ejects an acidic or alkaline etching solution to etch a substrate or the like.
1 multifunction printer; 3 printer; 5 scanner unit; 7 casing; 9 tank; 11 mechanics; 12 operation panel; 14 window; 15 liquid ejection assembly; 16 supply tube; 17 carriage; 19 liquid ejection head; 20 nozzle; 21 relay unit; 31 casing; 35A recess; 33 sheet member; 35 container portion; 37 air chamber; 37A recess; 41 first wall; 42 second wall; 43 third wall; 44 fourth wall; 45 fifth wall; 46 sixth wall; 47 seventh wall; 48 eighth wall; 49 ninth wall; 50 tenth wall; 50A cutout; 50B surface; 61 inlet port; 63 supply port; 67 air communication port; 81 communication path; 82 partition wall; 91 ink; 91A liquid level; 93 plug; 95 supply path; 97 the air; 101 tank; 103 casing; 105 sheet member; and P printing medium.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2013-006996 | Jan 2013 | JP | national |
This application is a national phase application of International Application No. PCT/JP2014/000093 filed on Jan. 10, 2014. This application claims priority to Japanese Patent Application No. 2013-006996 filed on Jan. 18, 2013. The entire disclosure of Japanese Patent Application No. 2013-006996 is hereby incorporated herein by reference.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2014/000093 | 1/10/2014 | WO | 00 |
