WO2006121109A1 - インクジェット記録装置 - Google Patents
インクジェット記録装置 Download PDFInfo
- Publication number
- WO2006121109A1 WO2006121109A1 PCT/JP2006/309467 JP2006309467W WO2006121109A1 WO 2006121109 A1 WO2006121109 A1 WO 2006121109A1 JP 2006309467 W JP2006309467 W JP 2006309467W WO 2006121109 A1 WO2006121109 A1 WO 2006121109A1
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- WO
- WIPO (PCT)
- Prior art keywords
- ink
- storage chambers
- ink storage
- outlet
- storage chamber
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17503—Ink cartridges
- B41J2/17506—Refilling of the cartridge
- B41J2/17509—Whilst mounted in the printer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17503—Ink cartridges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17503—Ink cartridges
- B41J2/17513—Inner structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17503—Ink cartridges
- B41J2/1752—Mounting within the printer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/19—Ink jet characterised by ink handling for removing air bubbles
Definitions
- the present invention relates to an ink jet recording apparatus that performs recording by ejecting ink onto a recording medium having a nozzle force.
- an ink jet recording apparatus in which an ink tank is installed separately from an ink jet head on a carriage and ink is supplied to the ink jet head via an ink tank tube is known.
- the ink supplied with the ink tank force through the tube flows into the elliptical pressure absorption chamber (ink storage chamber) in the damper frame from the lower side in a tangential direction.
- the road also flows in and flows from the outlet formed in the lower part of the pressure absorption chamber to the ink jet head.
- One side surface of the pressure absorption chamber (ink storage chamber) is made of a flexible film material.
- Patent Document 1 Japanese Patent No. 3520658
- the present invention effectively utilizes the volume of the ink storage chamber to efficiently relieve pressure changes, and bubbles that grow in the ink storage chamber are less likely to flow into the inkjet head! / This is achieved for at least one of the realization and the realization of an ink jet recording apparatus in which the ink storage chamber can be arranged in a small space in the case of including a plurality of ink storage chambers.
- a buffer tank having a plurality of ink storage chambers for storing a plurality of inks supplied to the ink jet head according to type is included, and the nozzle tank and the ink jet head scan the recording medium.
- An ink jet recording apparatus for discharging ink while being discharged, wherein each of a plurality of ink storage chambers has an ink inlet into which ink is introduced into each ink storage chamber, and ink stored in the ink storage chamber.
- An ink outlet to be supplied to each of a plurality of ink lead-out paths communicating with the ink jet head is formed, and the ink inlet and the ink outlet in each ink storage chamber are the majority of the ink storage chamber.
- An ink jet recording apparatus can be obtained that is formed at positions that are almost farthest from each other across the space.
- the ink inlet and the ink outlet are formed at positions that are almost farthest from each other across most of the space in the ink storage chamber. Therefore, it is possible to effectively reduce the pressure change by effectively utilizing the volume of the ink storage chamber.
- the separation distance between the ink inlet and the ink outlet is the first distance. If it is 70% or more of the inner dimension of the ink storage chamber in one direction, it should be 80% or more.
- the first direction can be, for example, a direction orthogonal to the scanning direction that is the direction in which the inkjet head is scanned.
- a portion that receives the plurality of tube forces stored in the ink tank and a portion that stores and supplies the ink to the ink jet head are provided in a direction perpendicular to the scanning direction. Place There are many matches. In that case, the ink moves in a direction that generally intersects the scanning direction in the notch tank, which is desirable. In such a case, by setting the direction perpendicular to the scanning direction as the first direction, the volume of the ink storage chamber can be used effectively.
- the first direction is preferably a direction perpendicular to the up-down direction and the scanning direction.
- the ink inlet and the ink outlet should be separated from each other not only in the first direction but also in the second direction orthogonal to the first direction.
- the space in the ink storage chamber between the ink inlet and the ink outlet can be increased.
- the capacity of the ink storage chamber can be effectively utilized.
- the ink storage chamber has a quadrangular shape having four sides parallel to each of the first direction and the second direction, to increase the space in the ink storage chamber between the ink inlet and the ink outlet.
- the distance between the ink inlet and the ink outlet is 20% or more of the inner dimension of the ink storage chamber. Is more desirable.
- the ink inlet and The volume of the ink storage chamber can be effectively utilized only by separating the ink outlet from at least one of the first direction and the second direction.
- the second direction is a vertical direction and a direction orthogonal to the first direction
- the third direction can be a vertical direction.
- the above-mentioned “state in which the ink inlet and the ink outlet are separated in the first direction and the second direction” means, for example, that the ink inlet and the ink outlet are separated in the first direction, and the ink It can also be expressed as a state in which the straight line connecting the inlet and the ink outlet is inclined with respect to the first direction.
- the ink flow path can be lengthened by inclining the straight line with respect to the first direction.
- the angle formed by the straight line and the first direction is, for example, preferably 10 degrees or more, and more preferably 20 degrees or more.
- a buffer tank that stores a plurality of types of ink in a plurality of ink storage chambers, an ink jet head that discharges ink to a recording medium, and a scanning device that scans a nozzle tank and an ink jet head
- the inkjet head and the plurality of ink storage chambers have a flat shape in which the dimension in the third direction perpendicular to the two directions is small relative to the dimension in the first direction and the second direction perpendicular to each other.
- each of the ink jet head and the plurality of ink storage chambers has a flat shape, and these are arranged in a state of being arranged in a flat direction (third direction). Therefore, the overall size including the ink jet head and the buffer tank can be reduced to / J.
- the inkjet head and the plurality of ink storage chambers may be arranged in contact with each other, and some of them may be arranged in contact with each other even if there is a gap between them. There may be gaps.
- the first direction, the second direction, and the third direction in the ink jet recording apparatus of this aspect can be the same as the direction described for the ink jet recording apparatus of the aspect described first.
- a plurality of ink storage chambers for storing a plurality of types of inks by type, a plurality of ink lead-out paths from which each of the ink storage chambers is led, and a connection to each of the ink lead-out paths
- An ink jet head having a plurality of ink inlets, wherein the plurality of ink storage chambers are parallel to each other and arranged in the vertical direction, and the plurality of ink outlet paths have substantially the same length and are in the vertical direction
- the ink storage chambers are connected to the side surfaces of the ink storage chambers, and the upper spaces of the ink storage chambers are air accumulating portions.
- the lower end forces of the ink storage chambers are respectively connected to the ink inlets of the inkjet head. While being opened as supply ports, their upper ends are respectively connected to a plurality of air discharge ports arranged substantially on a plane, and these air discharge ports are connected. An ink jet recording apparatus each mouth was then opened to the outside through the opening and closing possible exhaust valve corresponding is obtained.
- each ink storage chamber can have almost uniform characteristics with respect to the inkjet head, and the capacity of the ink storage chamber can be reduced while suppressing the overall height of the apparatus. Can be ensured, and high-quality recording can be performed while effectively suppressing variations in ink pressure.
- each of the ink outlet paths is shaped to extend in the vertical direction with approximately the same length, so that air is well separated from the ink that is about to flow into the ink inlet of the inkjet head in each ink outlet path. Then, it is accumulated in the upper space of the ink outlet path and discharged outside through an air discharge port that is opened and closed by an exhaust valve.
- an ink jet recording apparatus that performs recording by ejecting ink onto a recording medium
- a plurality of ink storage chambers storing a plurality of types of inks by type, and a plurality of inks derived from each of the ink storage chambers
- An apparatus including an ink outlet path and an inkjet head having a plurality of ink inlets connected to each of the ink outlet paths is already known from, for example, Japanese Patent Laid-Open No. 2005-280075.
- the three-color ink storage chambers are vertical, and a damper effect is expected to suppress fluctuations in ink pressure due to the presence of air in the upper part of each ink storage chamber. Since the capacity of the ink storage chamber is limited from the overall height, a large amount of air cannot be secured in the ink storage chamber, and it is difficult to obtain a sufficient damper effect.
- the ink jet recording apparatus of the above aspect it is possible to secure the capacity of the ink storage chamber while suppressing the height of the entire apparatus, and to obtain a damper effect that effectively suppresses fluctuations in ink pressure and the like.
- the area of the flexible film is increased when the upward or downward surface of the ink storage chamber is covered with a flexible film, and fluctuations in ink pressure, etc. are suppressed by the stagnation of the flexible film. Therefore, pressure fluctuations and the like are more effectively suppressed.
- the present invention further includes an ink storage chamber that stores ink and an ink outlet path that extends in the vertical direction and that draws out ink from the ink storage chamber, and is located below the ink storage chamber.
- Ink is supplied to the ink inlet of the inkjet head through the ink supply port at the lower part of the ink outlet path, and maintains or facilitates the connection between the ink guided from the ink storage chamber and the ink in the lower part of the ink outlet path.
- An ink jet recording apparatus including an ink communicating portion is obtained.
- the ink communication section maintains or facilitates the connection between the ink in the ink storage chamber and the ink in the lower part of the ink outlet path. This makes it difficult for the ink to be fluidly cut off by the air accumulated in the upper space of the ink outlet path. Therefore, the probability that the air force S is sucked into the ink-jet head and printing cannot be performed or printing is poor is reduced.
- the air contained in the ink is separated and the upper space of the ink lead-out path is separated. It is configured so that air does not flow to the inkjet head side.
- the accumulated air is appropriately discharged through an air discharge port that is opened and closed by an exhaust valve provided separately.
- the accumulated air creates a fluid connection between the ink storage chamber and the ink jet head. May be disconnected.
- the ink connection is fluidly disconnected in such a manner, there is a high probability that the air force S is sucked into the inkjet head and printing becomes impossible or printing is poor.
- the air is expanded prior to the suction of the ink having the capacity of the ink storage chamber and is sucked into the ink jet head at the time of purge suction. Become. For this reason, the amount of air accumulated in the upper space of the ink outlet path cannot be increased so as not to disconnect the ink connection.
- the ink is fluidly cut by the air accumulated in the upper space of the ink outlet path, and is sucked into the air force S ink jet head. This reduces the probability of printing failure or printing failure.
- FIG. 1 is an explanatory plan view showing a main configuration of an ink jet recording apparatus according to an embodiment of the present invention.
- FIG. 2 is a plan view of the head holder.
- FIG. 3 is an explanatory diagram showing the nozzle surface side force in FIG.
- FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. 2 (FIG. 15).
- FIG. 5 is a plan view showing an ink flow path of an extension 40a of the buffer tank 40 shown in FIG.
- FIG. 6 is a plan view of the ink case 71 as viewed from above.
- FIG. 7 is a plan view of the ink case 71 as viewed from below.
- FIG. 8 is a plan view of the ink case 72 as viewed from above.
- FIG. 9 is a plan view of the ink case 72 as viewed from below.
- FIG. 10 is an enlarged plan view of the ink case 71 in which the upward force is also seen.
- FIG. 11 is a cross-sectional view taken along the line BB in FIG.
- FIG. 12 is a cross-sectional view taken along the line CC in FIG.
- FIG. 13 is a cross-sectional view taken along line MM in FIG.
- FIG. 14 is a cross-sectional view taken along arrow Y—Y in FIG.
- FIG. 15 is a plan view of a head holder of an ink jet recording apparatus according to another embodiment different from the above.
- FIG. 16 is a plan view of the ink case 71 in the other embodiment as viewed from above.
- FIG. 17 is a plan view of the ink case 71 in the other embodiment as seen from the downward force.
- FIG. 18 is a plan view of the ink case 72 as viewed from above in another embodiment.
- FIG. 19 is a plan view of the ink case 72 as viewed from below in another embodiment.
- FIG. 20 is an enlarged plan view of an ink case 71 as viewed from above in another embodiment.
- FIG. 21 is a cross-sectional view taken along the line BB in FIG.
- FIG. 22 is a cross-sectional view taken along the line CC in FIG.
- FIG. 23 is a cross-sectional view taken along line MM in FIG.
- FIG. 24 is a cross-sectional view taken along the line Y—Y in FIG.
- FIG. 25 is a cross-sectional view taken along line 25-25 in FIG.
- FIG. 26 is a cross-sectional view taken along arrow BB in FIG. 20 in still another embodiment.
- FIG. 27 is a cross-sectional view taken along the line CC of FIG. 20 in still another embodiment.
- FIG. 28 is a cross-sectional view taken along the line MM in FIG. 20 in still another embodiment.
- FIG. 29 is a cross-sectional view taken along arrow YY of FIG. 20 in still another embodiment.
- FIG. 30 is a partially enlarged cross-sectional view of FIG. 26, illustrating the state of ink.
- FIG. 31 is a partially enlarged cross-sectional view of FIG. 26, illustrating a state where the supply of ink is cut off.
- FIG. 32 is a partially enlarged cross-sectional view of FIG. 29, illustrating the state of ink.
- FIG. 33 is a partial enlarged cross-sectional view of FIG. 29, illustrating a state where the supply of ink is cut off.
- Inkjet recording device 9 Head holder 14M, C, B, Y: Tube 3 0: Inkjet head 35-38: Nozzle array 39M, C, ⁇ , B: Ink supply port 40: Buffer tank 41-44 : Ink storage chamber 41b to 44b: Ink inlet 41c to 44c: Ink outlet 45: Exhaust valve device 45a: Exhaust valve box 46M, C, ⁇ , B: Air outlet 47M, C, ⁇ , B: Exhaust valve 48: Ink guide path 61Y, B, C, M: Ink introduction path 62Y, B, C, M: Ink introduction hole 63Y, B, C, M: Ink introduction path 64Y, M: Guide wall 64B, C: Ink introduction path 65Y, M: Connection path 66 C: Ink introduction path 68C: Connection path 91Y to 91B: Ink lead-out path 71, 72: Ink case (case) 71c, 72c: Wall (partition wall) 81
- FIG. 1 is an explanatory plan view showing the main configuration of the ink jet recording apparatus.
- the head holder 9 holds an inkjet head 30 that performs recording by discharging ink onto the recording paper P.
- the head holder 9 is attached to an endless belt 11 that is rotated by a motor 10, and is reciprocated along the guide shafts 6 and 7 by the rotational drive of the motor 10.
- an ink tank 5M containing magenta ink
- an ink tank 5C containing cyan ink
- an ink tank 5B containing black ink
- a yellow ink And an ink tank 5Y.
- Each of the ink tanks 5M to 5Y is connected to the tube joint 20 by flexible tubes 14M, 14C, 14B, and 14Y, respectively.
- the ink ejection side is defined as the lower surface and the downward direction
- the opposite side is defined as the upper surface and the upward direction.
- the left end side of the drawing is the left direction
- the right end side is the right direction
- the lower side of the drawing is the front
- the upper side of the drawing is the rear.
- Subscripts M, C, B, and Y indicate magenta ink, cyan ink, black ink, and yellow ink, respectively.
- the head holder 9 is formed in a box shape with an upper surface opened, and an inkjet head 30 is held on the lower surface of the bottom wall 9c.
- the inkjet head 30 is configured by laminating a cavity part 32 having a large number of ink flow paths and a piezoelectric actuator 31 that selectively applies ejection pressure to the ink in the ink flow path, and is formed on the lower surface of the cavity part 32. It has nozzle rows 35 to 38 (Fig. 3) arranged for each ink color, and has four ink inlets for each ink color on the upper surface. In FIG. 4, only the ink inlet 32a into which the yellow ink flows is shown.
- a frame-shaped reinforcing frame 33 is bonded and fixed to the upper surface of the inkjet head 30.
- the reinforcing frame 33 is formed with four ink passage openings corresponding to the respective ink inlets. In FIG. 4, only the ink passage port 33a corresponding to the ink inlet port 32a is shown.
- a buffer tank 40 is accommodated on the bottom wall 9c in the head holder 9.
- the buffer tank 40 has a configuration in which the ink case 71 and the ink case 72 are arranged in parallel with each other in the vertical direction and are connected to each other. Further, in the front-rear direction, the ink introduction part 40e, the buffer part 40b, and the ink lead-out part 40d have a configuration arranged in the order described.
- a wall 71c (see FIGS. 11 and 12) is provided inside the upper ink case 71 in the upper portion 40b. The yellow ink is formed on the upper side with the wall 71c as a boundary. Yellow ink storage chamber 41 (FIG. 6) for storing the ink Magenta ink storage chamber 42 (FIG.
- These ink storage chambers 41 to 44 are parallel to each other and arranged in the vertical direction, and are formed in two separate upper and lower ink cases 71, 72. That is, the yellow, magenta, cyan and black inks are stored in the buffer tank 40 in order.
- each of the ink storage chambers 41 to 44 is an ink jet head.
- the ink supply for 30 has almost uniform characteristics.
- the capacity of the ink storage chambers 41 to 44 can be secured while suppressing the height of the notch tank 40 or the height of the entire printer. Therefore, it is possible to realize high-quality recording while effectively suppressing fluctuations in ink pressure.
- the ink outlet 40d has a number of ink outlets 91M, 91C, 91Y, 91B corresponding to the ink reservoirs 41 to 44 arranged in the scanning direction of the inkjet head 30 behind the buffer 40b. ing.
- Each of the ink lead-out paths 91M to 91B extends in the vertical direction across the upper and lower ink cases 71 and 72, and the lower end of each of the ink jet heads 30 via each ink passage port (only 33a is shown) of the reinforcing frame 33. Open the ink supply ports 39M to 39B communicating with the ink inlet (only 32a is shown)!
- the ink outlet paths 91M to 91B are formed by dividing the inside of cylindrical walls 91e and 91f, which are formed corresponding to the upper and lower ink cases 71 and 72, for each ink by a partition wall 91g.
- each ink lead-out path 91M-91B force is applied to the upper and lower ink cases 71, 72.
- the upper and lower ink cases 71 and 72 are connected to each other and integrated.
- the ink outlet passages 91M to 91B penetrating the upper and lower ink cases 71 and 72 in the vertical direction are formed in the rear side portions of the upper and lower ink cases 71 and 72.
- the ink introduction part 40e includes an extension part 40a extending in front of the notch part 40b.
- the extending portion 40a is overlapped and supported on a mounting arm portion 9a that extends horizontally forward from the front end of the head holder 9.
- a tube joint 20 is attached to the upper surface in front of the extension 40a.
- a cable holding member 29 is formed at the front end of the tube joint 20 so as to insert and hold a flexible flat cable (not shown) in the left-right direction.
- the tube joint 20 is formed with connecting portions 21M, 21C, 21B, 21Y to which tubes 14M to 14Y are connected, arranged in a line in the front-rear direction and projecting leftward.
- Each of the connection portions 21M to 21Y is formed with an ink flow path for introducing ink from the connected tube.
- the upper surface of the extension 40a corresponding to the lower surface of the tube joint 20 has an ink introduction port 22M communicating with the ink flow path in each of the connection portions 21M to 21Y (FIG. 2).
- 22C, 22B, and 22Y have openings formed side by side in a row with the backward force also directed forward.
- ink introduction paths 61M, 61C, 6IB, and 61Y are formed with front ends connected to the ink introduction ports 22M, 22C, 22B, and 22Y, respectively.
- Each ink introduction path is formed in a groove shape extending in the front-rear direction (which is a concave groove in this embodiment), and is formed in the left-right direction on the lower surface of the extending portion 40a. Arranged side by side.
- the lower surfaces of the ink introduction paths 61M to 61Y are each opened in a groove shape, and each opening surface is sealed with a film 85 (Fig. 11).
- the film 85 serves as the bottom of each groove, and the ink introduction paths 61M to 61Y are formed by the groove and the film 85 !.
- the extended portion 40a is integrally connected to the wall 7 lc, and the rear ends of the ink introduction paths 61M to 61Y have ink introduction holes 62M, 62C, 62B that vertically penetrate the extended portion 40a.
- the ink introduction paths 63M, 63C, 63B, 63Y formed on the upper and lower surfaces of the extension 40a through 62Y Each is connected.
- the leftmost ink introduction path 63Y and the rightmost ink introduction path 63M are respectively connected to the yellow ink storage chamber 41 and the magenta ink storage chamber 42 of the ink case 71, and the central ink introduction paths 63C and 63B. Are connected to the cyan ink storage chamber 43 and the black ink storage chamber 44 of the ink case 72, respectively.
- Cylindrical walls 92a and 92b project from the opposing surfaces of the ink cases 71 and 72 at positions overlapping the rear ends of the central ink introduction paths 63C and 63B in plan view (FIGS. 7 and 8). Upper end force of the ink introduction paths 64B and 64C penetrating the shaped walls 92a and 92b. It is connected to the rear ends of the ink introduction paths 63C and 63B.
- the ink introduction paths 63C, 63B of the upper ink case 71 are moved downward via the ink introduction paths 64B, 64C.
- the upper and lower ink cases 71 and 72 are connected and integrated with each other in conjunction with the joining of the cylindrical walls 91 e and 91 f.
- the top surface of the wall 70c of the ink case 71 (see FIG. 11) is arranged in a substantially rectangular shape in the chopper 40b!
- a yellow ink storage chamber 41 consisting of a flat space is formed.
- the yellow ink storage chamber 41 is divided into four sides by a left side wall 41i, a right side wall 41h, a rear side wall 41k, and a front side wall 41m.
- the rear end of the ink introduction path 63Y opens as an ink inlet 41b at a corner formed by the left side wall 41i and the front side wall 41m.
- the yellow ink in the yellow ink storage chamber 41 flows out to a location where the central force in the left-right direction of the rear side wall 41k is slightly to the right and the left right corner force of the yellow ink storage chamber 41 is displaced to the left.
- a yellow ink outlet 41c is opened.
- the yellow ink inlet 41b and the yellow ink outlet 41c are provided near the diagonal position of the yellow ink storage chamber 41 as far as the surrounding conditions allow.
- Rephrase Are formed at positions that are almost farthest apart from each other across most of the space in the yellow ink storage chamber 41.
- the ink inlet and the ink outlet are separated from each other in the direction perpendicular to the scanning direction and the vertical direction (an example of the first direction), and a straight line connecting the ink inlet and the ink outlet is the first. It can also be expressed as a state inclined with respect to the direction. The same applies to the other ink storage chambers 42 to 44.
- the yellow ink outlet 41c is connected to the ink outlet path 91Y (FIGS. 7 and 11) through the connection path 65Y that penetrates from the bottom surface of the yellow ink storage chamber 41 to the lower surface 71b of the ink case 71 (FIG. 7).
- the connection path 65Y is opened below the upper end of the ink outlet path 91Y.
- the peripheral edge of the ink outlet path 91Y on the lower surface of the connection path 65Y is partitioned by the guide wall 64Y with respect to the ink outlet path 91Y so as to guide the ink to the bottom of the ink outlet path 91Y. is there.
- connection path 65Y can be regarded as an extension of the yellow ink outlet 41c.
- the surface open above the yellow ink storage chamber 41, the ink introduction paths 63Y, 63B, 63C, 63M and the exhaust passage 93 described later is a flexible film 81 (FIGS. 2 and 11). Sealed with!
- the upper surfaces of the side walls that define the outer peripheries of the ink introduction paths 63Y to 63M and the exhaust passage 93 described later are formed on the same plane as the upper surfaces of the side walls 41h to 41m of the yellow ink storage chamber 41, and the film 81 is formed on the upper surface.
- the yellow ink storage chamber 41, the ink introduction path, and the exhaust path described later are partitioned by bonding means such as adhesion and heat welding.
- ribs 41d, 41e, and 41f are erected at intervals on both sides of a line that connects the yellow ink inlet 41b and the yellow ink outlet 41c.
- Each of the rib 41d and the rib 41e has a quadrangular cross section, and is formed to have a height that is about half the depth of the yellow ink storage chamber 41 (distance from the film 81 to the bottom 41a). Is positioned so as not to limit the movement of the film 81.
- Rib 41d and rib 41e prevent ink from flowing quickly from ink inlet 41b to ink outlet 41c. It is for guiding.
- Rib 41f force that also has a small piece of force with a bent part Between the rib 4 Id and the rib 41e and formed to guide the flow of the ink toward the ink outlet 41c along the bent rib 41e It has been.
- FIG. 7 is a view of the ink case 71 as viewed from below, the left direction in the figure is “right direction” and the right direction in the figure is “left direction”.
- the lower surface of the wall 71c of the ink case 71 is formed with a magenta ink storage chamber 42 having a flat space with a substantially rectangular cross section and an open bottom surface. Yes.
- the magenta ink storage chamber 42 is partitioned by a left side wall 42i, a right side wall 42h, a rear side wall 42k, and a front side wall 42m, and is adjacent to the yellow ink storage chamber 41 via a wall 71c as shown in FIG. It is provided.
- the magenta ink inlet 42b of the magenta ink storage chamber 42 is formed in the bottom 42a in the vicinity of the right front corner in the magenta ink storage chamber 42 (FIG. 7), and passes through the ink case 71 to form ink. Connected to one end of the inlet 63M (Fig. 6)!
- the magenta ink outlet 42c of the magenta ink storage chamber 42 is formed in the bottom 42a in the vicinity of the left rear corner opposite to the magenta ink inlet 42b and passes through the ink case 71.
- connection path 65M is formed at a position corresponding to the magenta ink outlet 42c and outside the yellow ink storage chamber 41.
- One end of the connection path 65M is connected to the magenta ink outlet 42c penetrating the ink case 71, and the other end is connected to the magenta ink outlet path 91M through the ink case 71 from the upper surface to the lower surface.
- connection path 65M is opened below the upper end of the ink outlet path 91M.
- peripheral edge of the ink outlet path 91M on the lower surface of the rear end of the connection path 65M is partitioned by the guide wall 64M from the inside of the ink outlet path 91M so as to guide the ink to the bottom of the ink outlet path 91M. ! /
- the magenta ink outlet 42c has a partition wall that divides the ink case 71 vertically.
- the wall 71c is connected to the ink outlet path 91M through the connection path 65M. That is, the magenta ink outlet 42c indicates that “the ink outlet 42c of one of the ink storage chambers 42 of the two opposite surfaces of the ink case penetrates to the other side of the two opposite surfaces of the case. And is connected to the ink outlet path ”.
- the magenta ink inlet 42b and the magenta ink outlet 42c are provided at substantially diagonal positions of the magenta ink storage chamber 42.
- the magenta ink storage chambers 42 are formed at positions that are almost farthest from each other across most of the space in the magenta ink storage chamber 42.
- magenta ink inlet 42b and the magenta ink outlet 42c are formed at positions that are almost farthest from each other across a large space in which the ink in the magenta ink storage chamber 42 flows.
- the yellow ink storage chamber 41 and the magenta ink storage chamber 42 are adjacent to each other through the wall 71c of the ink case 71.
- the magenta ink outlet 42c is disposed at a different position along the wall 71c.
- the line connecting the yellow ink inlet 41b and the outlet 41c and the line connecting the magenta ink inlet 42b and the outlet 42c intersect like diagonal lines in almost different directions. Is located.
- the ink inlet and the ink outlet are separated from each other in the scanning direction and the direction perpendicular to the vertical direction (an example of the first direction), and two straight lines connecting the ink inlet and the ink outlet are formed. It can also be expressed as being tilted in opposite directions with respect to the first direction. The same applies to the other ink storage chambers 43 and 44.
- the surface of the magenta ink storage chamber 42 that opens downward is sealed with a flexible film 82 (Fig. 12).
- Film 82 is the side wall 421 of ink reservoir 42!
- the ink storage chamber 42 is partitioned by bonding means such as bonding and heat welding on 42 m.
- the ink case 71 includes a wall portion that is opened up and down and a film material that seals the upper and lower openings.
- the wall section includes a wall 71c that is a partition wall that divides the upper and lower sides, and upper and lower side walls 411! ⁇ M and side wall 421! It is comprised including ⁇ m.
- the bottom 42a of the magenta ink storage chamber 42 is raised, and the rib 42d, 42e force is erected! Rib 42 d and 42e are provided in parallel so that the distance of the diagonal force is almost equal across the diagonal line connecting the magenta ink inlet 42b and the magenta ink outlet 42c.
- Each of the ribs 42d and the ribs 42e has a rectangular cross section and is formed to have a height about half the depth of the magenta ink storage chamber 42 (distance from the film 82 to the bottom 42a). Spaced and positioned so as not to limit the movement of film 82.
- the rib 42d and the rib 42e are used to guide the rapid flow of ink from the ink inlet 42b to the ink outlet 42c.
- FIG. 9 is a view from below, the left direction in the figure is “right direction” and the right direction in the figure is “left direction”.
- the cyan ink storage chamber 43 having the same shape is located at the position corresponding to the magenta ink storage chamber 42, the left side wall 43i, and the right side wall 43h.
- the rear side wall 43k and the front side wall 43m are partitioned to form an opening upward.
- Ribs 43d and 43e having the same shape as the ribs 42d and 42e (FIG. 7) are provided on the bottom 43a.
- the opening surface of the cyan ink storage chamber 43 is sealed with a substantially rectangular flexible film 83.
- the ink case 71 and the ink case 72 are connected to each other so that the film 82 of the magenta ink storage chamber 42 and the film 83 of the cyan ink storage chamber 43 face each other with a space therebetween. .
- the cyan ink inlet 43b of the cyan ink storage chamber 43 is formed at the bottom 43a in the vicinity of the right front corner in the cyan ink storage chamber 43 and penetrates the ink case 72 in the thickness direction. It is formed on the lower surface of the ink case 72 and is connected to one end of the ink introduction path 66C.
- the ink introduction path 66C is formed in an L shape along the right front corner outside the black ink storage chamber 44, and is connected to the lower end of the other end S ink introduction path 64C.
- the ink introduction path 63C (FIG. 7) formed in the upper surface 71a of the case 71 is an ink introduction path 64C (FIG. 7) that penetrates the ink case 71 and the ink case 72 in the stacking direction. And the cyan ink inlet 43b of the cyan ink storage chamber 43 through the ink introduction path 66C.
- the cyan ink outlet 43c of the cyan ink storage chamber 43 is formed in the bottom 43a in the vicinity of the left rear corner in the cyan ink storage chamber 43, and penetrates the ink case 72 in the thickness direction to pass through the ink case 72.
- the connecting path 68C (Fig. 9) formed on the bottom surface of the!
- the connection path 68C is formed in an L shape along the left rear corner outside the black ink storage chamber 44.
- the connection path 68C and the rear portion of the black ink storage chamber 44 are positioned so as to overlap the ink outlet paths 91M to 91B in a plan view, and the other end 68Ca of the connection path 68C extends the ink case 72 from the bottom up. Is connected to the ink outlet path 91C.
- the cyan ink outlet 43c passes through a wall 72c as a partition wall that partitions the ink case 72 in the vertical direction, and is connected to the ink outlet path 91C through the connection path 68C. That is, the cyan ink outlet 43c is “the ink outlet 43c of the ink storage chamber 43 on one of the two opposite sides of the ink case to the other side of the two opposite sides of the case”. This is an example of a mode of “through and connected to the ink outlet path 91C”. The same applies to the black ink outlet 44c.
- the black ink storage chamber 44 will be described with reference to FIG.
- a black ink storage chamber 44 is formed in a lower portion of the ink case 72.
- the black ink storage chamber 44 is formed of a flat space having a substantially rectangular cross section and an open bottom surface.
- the black ink storage chamber 44 is partitioned by a left side wall 44i, a right side wall 44h, a rear side wall 44k, and a front side wall 44m, and is provided adjacent to the cyan ink storage chamber 43 via a wall 72c as shown in FIG. It has been.
- an ink introduction path 66C force is adjacent to the right front corner of the black ink storage chamber 44, and a connection path 68C is provided adjacent to the left rear corner.
- the front portion of the black ink storage chamber 44 is positioned so as to overlap with the ink introduction path 64B in plan view, and the ink introduction path 64B penetrates the ink case 72 in the vertical direction, and the black ink storage chamber 44 It opens at the bottom 44a near the left front corner.
- the ink guide The lower end opening of the inlet 64B is an ink inlet 44b of the black ink storage chamber 44.
- the black ink outlet 44c through which the black ink in the black ink storage chamber 44 flows out is formed in the bottom 44a near the right rear corner in the black ink storage chamber 44, and penetrates the ink case 72 in the vertical direction.
- the ink lead-out path 91C is communicated.
- the black ink inlet 44b and the black ink outlet 44c are provided at substantially diagonal positions in the black ink storage chamber 44.
- the black ink storage chambers 44 are formed at positions farthest from each other across most of the space in the black ink storage chamber 44.
- the black ink storage chamber 44 and the cyan ink storage chamber 43 are adjacent to each other through the wall 72c of the ink case 72, and the black ink inlet 44b and the black ink outlet 44c are connected to the cyan ink inlet 43b.
- the cyan ink outlet 43c and the force wall 72c are arranged at different positions.
- the line connecting the cyan ink inlet 43b and the outlet 43c and the line connecting the black ink inlet 44b and the outlet 44c are diagonal lines in substantially different directions. Located crossing.
- the surfaces opened above the black ink storage chamber 44, the ink introduction path 66C, and the connection path 68C are sealed with a flexible film 84 (FIGS. 9 and 14).
- the bottom surface of the side wall defining the ink introduction path 66 C, the connection path 68 C, and the black ink storage chamber 44 is formed on the same plane, and the film 84 is bonded to the surface by bonding means such as adhesion or heat welding.
- bonding means such as adhesion or heat welding.
- ribs 44d and 44e are provided upright on both sides of a line connecting the ink inlet 41b and the ink outlet 41c.
- Each of the rib 44d and the rib 44e has a quadrangular cross section, and is formed at a height that is about half the depth of the black ink storage chamber 44 (the film 84 force is also the distance to the bottom 44a), and is spaced from the film 84. Placed and positioned so as not to limit the movement of film 84.
- the rib 44d and the rib 44e are for guiding the rapid flow of ink from the ink inlet 64b to the ink outlet 44c.
- the ink outlet passages 91M to 91B located above the ink supply ports 39M to 39B are open to the upper surface of the ink case 71, respectively, and an exhaust passage 93 (see FIG. 10) formed in a groove shape on the upper surface of the ink case 71.
- the exhaust valve device 45 disposed on the side of the buffer 40b.
- the exhaust valve device 45 includes an exhaust valve box 45a serving as a container and exhaust valves 47M to 47B that can be opened and closed for each exhaust passage 93.
- Each exhaust valve 47 is normally closed, and the ink supplied from the tubes 14M to 14Y is included in the ink when flowing through the ink storage chambers 41 to 44 and the ink outlet passages 91M to 91B. Bubbles are floated and accumulated at the upper ends of the ink outlet paths 91M to 91B. These bubbles can be discharged to the outside by appropriately opening each exhaust valve 47.
- the yellow ink flows along the path shown in the YY section of FIG. As shown in FIG. 11, the ink introduction port 22Y (FIG. 5) is introduced into the yellow ink storage chamber 41 from the yellow ink inlet 41b (FIG. 6) through the ink introduction passages 61Y and 63 ⁇ .
- the yellow ink introduced into the yellow ink storage chamber 41 flows across most of the space in the yellow ink storage chamber 41 from the yellow ink inlet 41b toward the yellow ink outlet 41c.
- the yellow ink that has flowed out of the yellow ink storage chamber 41 is supplied to the ink jet head 30 from the ink supply port 39Y through the ink outlet 91Y.
- Magenta ink flows along the path shown in the MM cross section of FIG. As shown in Fig. 12, the ink introduction port 22M (Fig. 5) passes through the ink introduction passages 61M and 63M, and the magenta inlet 42b (Fig. 7) is also introduced into the magenta ink storage chamber 42 on the back side of the ink case 71.
- the ink introduction port 22M (Fig. 5) passes through the ink introduction passages 61M and 63M
- the magenta inlet 42b (Fig. 7) is also introduced into the magenta ink storage chamber 42 on the back side of the ink case 71.
- magenta ink introduced into the magenta ink storage chamber 42 flows from the magenta ink inlet 42b toward the magenta ink outlet 42c.
- the magenta ink that has flowed out of the magenta ink storage chamber 42 is supplied to the ink jet head 30 through the ink outlet path 91M as shown in FIG.
- the cyan ink flows along the path shown in the CC section of FIG. Shown in Figure 13
- cyan ink introduced into the ink introduction paths 61C and 63C from the ink introduction port 22C (Fig. 5) is introduced into the ink case 72 under the ink case 72 through the ink introduction path 64C that penetrates the ink cases 71 and 72 in the stacking direction.
- the cyan ink inlet 43b (Fig. 8) force is also introduced into the upper side cyan ink reservoir 43.
- the cyan ink introduced into the cyan ink storage chamber 43 flows from the cyan ink inlet 43b toward the cyan ink outlet 43c.
- the cyan ink flowing out from the cyan ink storage chamber 43 is supplied to the inkjet head 30 from the ink supply port 39C via the ink outlet path 91C.
- the black ink flows along a path indicated by a BB cross section in FIG.
- the black ink introduced from the ink introduction port 22B (FIG. 5) into the ink introduction paths 61B and 63B (FIG. 5) passes through the ink introduction paths 64B penetrating the ink cases 71 and 72 in the stacking direction. Then, the ink is introduced into the black ink storage chamber 44 on the lower surface side of the ink case 72.
- the black ink introduced into the black ink storage chamber 44 flows from the black ink inlet 44b toward the black ink outlet 44c.
- the black ink from which the force of the black ink storage chamber 44 has flowed out is also supplied to the inkjet head 30 through the ink outlet path 91B.
- ink flows almost linearly from the ink inlet to the outlet, so that the ink from the ink tank with less growth of bubbles in the ink can be quickly supplied to the inkjet head.
- the line connecting the ink inlet and ink outlet By disposing ribs on both sides of the ink, it is possible to further improve the flow of ink and to reduce non-ejection of ink due to bubbles.
- the volume is made larger than the other ink storage chambers, and the volume suitable for the amount of ink used is set. can do.
- Each ink storage chamber 41-44 has a flat space along a plane including a straight line connecting each ink inlet 41b-44b and each ink outlet 41c-44c, and is in a posture parallel to the plane. Since the layers are arranged in a direction perpendicular to the plane, the thickness in the arrangement direction can be further reduced.
- the yellow ink storage chamber 41 and the magenta ink storage chamber 42 are adjacent to each other through the wall 71c of the ink case 71, and the cyan ink storage chamber 43 and the black ink storage chamber 44 are adjacent to each other through the wall 72c of the ink case 72. They have a relationship in which the opposite sides of the walls 71c and 72c are open, and each open surface is covered with flexible films 81 to 84.
- the “wall portion forming one ink case” is a partition wall (71c or 72c) that divides the interior of the case into two, and two sets of left side walls provided above and below the wall.
- the right side wall, the rear side wall, and the front side wall are included.
- the “wall portion” is open to the upper and lower sides, and each of the two open surfaces of the wall portion is covered with a film to form an ink storage chamber.
- the “wall portion” of the ink case 71 includes a portion where the ink introduction paths 63 and the like and the ink introduction paths 64B and C on the upper surface of the ink case 71 are formed.
- the rear end portion of the ink introduction path 63M (connected to the ink inlet 42b) and the ink introduction holes 64B and C are provided so as to penetrate the wall portion of the ink case 71.
- the “wall portions” of the ink cases 71 and 72 include cylindrical walls 91e and 91f and partition walls 91g that form the ink introduction paths 91M to 91B.
- the ink introduction paths 91M to 91B The ink cases 71 and 72 are provided so as to penetrate through the “wall portion”.
- the ink inlets 41b to 44b and the ink outlets 41c to 44c of the two ink storage chambers are arranged at different positions along the walls 71c and 72c. That is, the two ink storage chambers are adjacent to each other through one wall in one case, and the two ink storage chambers The ink inlets and the ink outlets are arranged at different positions along the wall.
- the ink storage chamber can be arranged in a small space.
- the ink flow path can be arranged in a compact manner, and the ink cases 71 and 72 are laminated.
- the thickness in the direction can also be arranged small.
- Each ink lead-out path corresponding to each ink storage chamber is opened side by side on one side of the nozzle tank facing the ink jet head, and at least the ink outlet of each ink storage chamber on one surface of the case is In addition, since it penetrates to the other surface of the case and is connected to the ink lead-out path, the ink flow path can be arranged in a compact manner, and the overall size including the ink jet head and the buffer tank can be reduced.
- Each ink introduction path 63Y, 63M, 63C, 63B connected to the tubes 14M to 14Y is collectively provided in one ink case 71, and the cyan ink storage chamber 43 and the black ink storage chamber 44 are provided. Is connected through the ink case 71, 72 of the other end of the ink introduction path 63C, 63B, so that the ink introduction path 62Y, 62M, 62C, 62B can be easily connected and the ink case 71, 72 72 can be stacked in a small space.
- ink introduction paths 63Y to 63M connected to each of the tubes 14M to 14Y are collectively provided on one surface of the ink case 71, and the overall size including the connection portion between the ink case 71 and the tube is also small. can do.
- the magenta ink inlet 42b and the magenta ink outlet 42c of the magenta ink storage chamber 42 located on the opposite surface side of the two ink cases 71 and 72 are the ink introduction paths 64B and 64C penetrating the case and the ink. Since it is located inside the ink storage chamber with respect to the outlet paths 91M to 91B, the ink outlet path is not arranged in the outer shape of the magenta ink storage chamber 42.
- the shape can be a simple shape such as a quadrilateral. For this reason, it is easy to form a flow path that ensures a quick ink flow to the ink outlet. The same effect can be obtained in the cyan ink storage chamber 43.
- the film covering the open surface of the ink storage chamber can be made into a simple shape such as a quadrilateral, almost all the surface of the film is effectively deformed in response to a change in ink pressure. Changes can be mitigated and, in production, a large sheet of film material can be cut and pasted to the specified dimensions, eliminating film waste and precise positioning. It becomes.
- the ink flow paths can be arranged more compactly, and the ink introduction paths are arranged at both ends of the row of ink introduction paths.
- 63Y and 63M are connected to the ink storage chamber of the case in which the introduction path is formed, and those from the center 63B and 63C are connected to the ink storage chambers 43 and 44 of the ink case 72 which is the other case. If the ink introduction paths 63Y to 63M are arranged so as not to interfere with the respective ink storage chambers 42 and 43 located on the opposing surface sides of 71 and 72, the above-described effects can be easily enjoyed.
- the black ink storage chamber 44 can also be made into a simple quadrilateral, as shown in Fig. 9, by making the quadrilateral including the ink introduction path 66C and the connection path 68C, the film covering all of them can be formed.
- a simple shape such as a quadrilateral is advantageous in manufacturing as described above.
- the directional force “scanning direction” is parallel to the guide shafts 6 and 7 that guide the head holder 9.
- the direction that intersects the scanning direction and the vertical direction at a right angle is the “first direction”
- the horizontal direction parallel to the scanning direction is the “second direction”
- the vertical direction is the “third direction”.
- the separation distance between the ink inlet and the ink outlet of each of the ink storage chambers 41 to 44 is 90% or more of the inner dimension of the ink storage chamber in the first direction.
- the yellow ink storage chamber 41 is set to 30% or more of its inner dimension.
- the magenta and cyan ink storage chambers 42 and 43 are set to 80% or more of the inner dimensions.
- the black ink storage chamber 44 is set to 40% or more of the inner dimension.
- the ink inlet and the ink outlet are formed at positions that are almost farthest from each other across most of the space in the ink storage chamber. Further, each ink inlet and each ink outlet are provided as close as possible to the diagonal position of each ink storage chamber.
- the ink inlet and the ink outlet are separated from each other in the first direction, and the straight line connecting the ink inlet and the ink outlet is inclined with respect to the first direction.
- the inclination angle is set to 15 degrees or more for the yellow ink storage chamber 41, 40 degrees or more for the magenta and cyan ink storage chambers 42 and 43, and 30 degrees or more for the black ink storage chamber 44.
- the straight lines connecting the ink inlet and the ink outlet of each of the two ink storage chambers adjacent to each other are inclined in opposite directions with respect to the first direction.
- Each of the ink storage chambers 41 to 44 of the present embodiment has a flat shape with a small dimensional force S in the third direction perpendicular to the dimensions in the first direction and the second direction.
- the vertical direction may be the “second direction” and the direction parallel to the scanning direction may be the “third direction”.
- FIG. 15 to 24 show the same components as those in the above embodiment, but reference numerals are given to the air discharge ports 46 and the like for the purpose of explaining the air discharge portion in detail.
- line 4-4 is shown, and the cross section thereof is the same as FIG. 4 of the above embodiment.
- the buffer tank 40 is provided with flat ink storage chambers 41 to 44 in a posture in which they are laid horizontally, as in the above embodiment. These ink storage chambers 41 to 44 are mutually connected. They are in a state of being arranged vertically in a parallel posture, and are formed in two separate upper and lower ink cases 71 and 72 (FIGS. 21 to 24). The ink storage chambers 41 to 44 are connected to the ink outlet paths 91M to 91B.
- the ink outlet passages 91M to 91B are substantially the same length and are arranged in the vertical direction (FIGS. 21 to 24), and ink storage chambers 41 to 44 are respectively connected to the side surfaces thereof. Ink is led out into the ink outlet paths 91M to 91B from .about.44. At this time, the upper space force of the ink outlet passages 91M to 91B functions as an accumulator that accumulates the separated air contained in the ink!
- the ink outlet passages 91M to 91B have substantially the same length, and the ink storage chambers 41 to 44 extend in the vertical direction. Also, the ink force trying to flow into the ink inlet (only 32a shown in FIG. 4) of the inkjet head 30 also separates the air well and temporarily accumulates the air in the upper space of the ink outlet paths 91M to 91B be able to. The accumulated air can be discharged to the outside through an air discharge port that is opened and closed by an exhaust valve device 45 described later.
- the ink outlet paths 91M to 91B are formed in parallel so as to extend in the vertical direction across the upper and lower ink cases 71, 72, respectively, and the lower ends thereof are the ink passage openings (
- the ink supply ports 39M to 39B are respectively connected to the respective ink inlets (only 32a) of the inkjet head 30 through (shown only 33a in FIG. 4).
- each upper end portion is connected to a plurality of air discharge ports 46M, 46C, 46Y, 46B arranged substantially in a plane, and an exhaust valve device 45 that can open and close each air discharge port 46M-46B as described later 45 It is opened to the outside through.
- the ink outlet paths 91M to 91B are divided into upper and lower ink cases 71 and 72, which are divided into an upper side connected to the air discharge ports 46M to 46B and a lower side connected to the ink supply ports 39M to 39B, respectively. Is formed.
- the ink outlet passages 91M to 91B are formed by dividing the inside of the cylindrical walls 91e and 91f corresponding to the upper and lower ink cases 71 and 72 for each ink by the partition wall 91g (FIG. 17, Figure 18).
- the partition wall 91g By aligning the cylindrical walls 91e, 91f and the partition wall 91g of both cases 71, 72 and joining them using joining means such as ultrasonic welding and adhesion, the ink guide The upper portion and the lower portion of the outlets 91M to 91B are joined, and in this state, the ink storage chambers 41 to 44 are arranged in the vertical direction as described above.
- the ink storage chambers 41 to 44 are arranged in parallel and vertically with each other, the ink storage chambers 41 to 44 have substantially uniform characteristics with respect to the ink supply to the inkjet head 30. You can have it.
- the capacity of the ink storage chambers 41 to 44 can be secured while suppressing the height of the koffa tank 40 or the height of the entire printer. Therefore, it is possible to achieve high-quality recording while effectively suppressing fluctuations in ink pressure.
- the upper ends of the ink outlet passages 91M to 91B located above the ink supply ports 39M to 39Y are formed on the upper surface (partial plane) of the upper ink case 71 as shown in FIGS.
- each ink color is connected to the upper end of the exhaust hole of the exhaust valve device 45, respectively.
- the exhaust valve device 45 is formed substantially parallel to the ink outlet paths 91M to 91B.
- the air outlets 46M to 46B at the upper ends of the ink outlet passages 91M to 91B and the exhaust valve device 45 are connected by the exhaust passages 93M to 93Y formed on the upper surface of the ink case 71.
- the exhaust passages 93M to 93Y are defined by covering their open upper surfaces with a flexible film 81.
- the air passages 93M to 93Y bend in the right direction from the upper ends of the ink outlet passages 91M to 91B along the outer periphery of the ink storage chamber 41 for yellow ink on the upper surface of the upper ink case 71, Then, it extends forward and is connected to the exhaust valve device 45, specifically, the exhaust valves 47M to 47B.
- Each exhaust valve 47 is normally closed, and the ink force supplied from the ink supply tubes 14M to 14Y.
- ink flows in the ink storage chambers 41 to 44 and the ink outlet passages 91M to 91B, ink is supplied.
- the air contained therein is floated, and the air captured by the filter provided at each ink inlet 39 of the inkjet head 30 is floated and accumulated at the upper ends of the ink outlet paths 91M to 91B.
- This air is driven and controlled by the exhaust valve device 45 to open each exhaust valve 47 appropriately. By operating, it can be discharged to the outside through the exhaust passages 93M to 93Y.
- Exhaust valve device 45 (Fig. 20) includes exhaust valve box 45a and exhaust valves 47M to 47B that can be opened and closed for each exhaust passage 93M to 93Y accommodated therein. Therefore, only the exhaust valve 47M, which is an exhaust portion for magenta ink, will be described below with reference to FIG.
- the exhaust hole 101 communicating with the exhaust passage 93M of the exhaust valve 47M is long in the up-down direction and opens up and down, and has an exhaust inlet 101a and an exhaust outlet 101b. Functions as a slidable valve chamber and is formed for each ink color (four).
- Each exhaust hole 101 has an upper large-diameter hole portion 101A and a small-diameter hole portion 101B located on the lower side, and these communicate with each other through an exhaust outlet 101b.
- the upper portion of the exhaust valve box 45a having the exhaust inlet 101a and the engagement convex portion 71d described later is formed integrally with the upper ink case 71, and has a large diameter hole portion 101A and a small diameter hole portion 101B.
- the lower part of the exhaust valve box 45a is formed integrally with the lower ink case 72, and when the upper and lower ink cases 71, 72 are joined as described above, the upper part and the lower part of the exhaust valve box 45a are also Bonded at the same time.
- the valve body 102 includes a large-diameter valve portion 102a, a small-diameter valve rod 102b integrally connected to a lower end thereof, and a ring-shaped sealing material 102c fitted to the valve rod 102b.
- the valve portion 102a has a larger diameter than the valve rod 102b, and is provided on the valve rod 102b so that the sealing material 102c comes into contact with the valve portion 102a. Further, the valve portion 102a faces the opening end surface 101C (valve seat surface) around the exhaust outlet 101b, which is the bottom surface of the large-diameter hole portion 101A and the upper end opening portion of the small-diameter hole portion 101B, through the sealing material 102c. To do.
- the large-diameter hole portion 101A of the exhaust hole 101 is inserted with a large-diameter valve portion 102a, and the small-diameter hole portion 101B is inserted with a valve rod 102b leaving a gap that allows air (gas) to flow therethrough.
- the valve body 102 is slidably supported in the exhaust hole 101 (valve chamber) in the central axis direction.
- the nozzle rod 102b is pushed up by the projecting shaft 121 provided in the maintenance unit 120 when the valve is opened, so that its lower end force S (when the valve is closed) is near the lower end opening of the small-diameter hole 101B.
- Seal material 102c For example, a rubber-like elastic packing is suitable. In this embodiment, an O-ring is used as the sealing material 102c.
- An opening end surface 101C around the exhaust outlet 101b communicating with the atmosphere serves as a valve seat surface, and a sealing material 102c is disposed between the opening end surface 101C and the valve portion 102a. Therefore, the exhaust outlet 101b is opened and closed by the valve portion 102a through the sealing material 102c fitted to the valve rod 102b.
- a coil spring 103 is inserted into the large-diameter hole 101A as an urging means for urging the valve body 102 (valve portion 102a) in a direction to close the exhaust outlet 101b. That is, the upper end portion of the coil spring 103 is fitted to the outside of the engaging convex portion 71d of the upper ink case 71, and the lower end portion is fitted into the concave portion 102aa on the upper side of the valve portion 102a.
- a plurality of exhaust inlets 101a are formed around the engaging projection 71d. That is, one end of the coil spring 103 is in contact between the exhaust inlet 101a and the engaging projection 71d. Therefore, an exhaust (air) flow path from the exhaust inlet 101a to the exhaust outlet 101b is formed outside the coil spring 103.
- the noble rod 102b is slid to compress the coil spring 103. Therefore, the exhaust gas flowing in from the exhaust inlet 101a enters the inside of the coil spring 103, and a smooth exhaust flow is formed between the inner wall surface of the large-diameter hole 101A and the coil spring 103. Will be. That is, the gap between the inner wall surface of the large-diameter hole portion 101A and the outer surface of the coil spring 103 is a flow channel with a low flow resistance. Furthermore, an exhaust flow path free from obstacles that cause an increase in flow path resistance is formed from the exhaust inlet 10 la to the exhaust outlet 101b together with the outer peripheral surface of the valve portion 102a.
- valve spring 102a is constantly urged by the coil spring 103 in the direction in which the sealing material 102c abuts against the opening end face 101C, so that the pushing-up force by the protruding shaft 121 described later is increased.
- the exhaust valve 47M is in a valve closed state that closes the exhaust outlet 101b.
- valve rod 102b of the valve body 102 a plurality of groove portions 102d are formed over the entire length. Groove 102d force formed in this valve rod 102b Valve portion 102a and sealing material 102c Functions as a gap (exhaust flow path) that reliably allows the flow of air between the valve rod 102b and the sealing material 102c.
- ink adheres between the opening end surface 101C with which the sealing material 102c comes in contact with the sealing material 102c and the sealing material 102c in the valve closed state, and the ink exhibits the adhesion function, and only the valve rod 102b is raised, Even if the phenomenon that the sealing material 102c remains on the opening end face 101C occurs, the sealing material 102c is communicated through the groove 102d, so that exhaust is possible. As a result, air does not continue to accumulate in the ink outlet paths 91M to 91B, and the air does not move toward the ink jet head 30, so that normal recording is not hindered.
- the maintenance unit 120 that performs cleaning of the nozzle surface, recovery processing for selectively sucking ink for each color, and removal processing for removing the air retained in the nozzle tank 40 is a nozzle of the inkjet head 30.
- a first cap member 122 that covers the opening surfaces of 35 to 38 so as to be openable and closable, and a plurality of second caps that individually cover the lower end surface of the exhaust valve device 45 (that is, the lower end opening surface of each small-diameter hole 101b).
- the cap member 123 is provided. Both cap members 122 and 123 are supported by a vertically moving mechanism 124 similar to a known maintenance unit so as to be vertically movable.
- the cap members 122 and 123 are moved to the raised positions where they are in close contact with the opening surfaces of the nozzles 35 to 38 and the lower end surface of the exhaust valve device 45. In position, they move to the lowered position so that their surface forces are also separated. Further, the first cap member 122 is connected to the suction pump 125 in the same manner as a known maintenance unit, and sucks and removes ink and foreign matters that are thickened by the suction pump 125 with nose and nose 35-38 force. It is supposed to be configured.
- Each second cap member 123 has a protruding shaft portion 121 protruding from the cap member 123.
- the valve body 1 is formed by the protruding shaft portion 121. 02 is pushed up against the urging force of the coil spring 103, and the sealing material 102c is also released from the opening end face 101C of the large-diameter hole 1101A, so that the exhaust outlet 101b is opened.
- Each second cap member 123 is connected to the suction pump 125 via a common flow path, and the air accumulated in the upper spaces of the respective ink outlet paths 91M to 91B by driving the suction pump 125 is collectively collected. Inhaled and discharged to the atmosphere. This is because the ink supplied to the inkjet head 30 through the ink tank force ink supply tubes 14M to 14Y passes through the ink flow path. By temporarily storing the ink in the ink outlet passages 91M to 91B, the air is separated from the ink, and the air accumulated in the upper portions of the ink outlet passages 91M to 91B is discharged by the suction pump 125 as described above. To make it happen.
- the first cap member 122 and the second cap member 123 are alternatively connected to the suction pump 125 by the switching valve 126.
- the first cap member 122 and the second cap member 123 are brought into close contact with the opening surfaces of the nozzles 35 to 38 and the lower end surface of the exhaust valve device 45 simultaneously by the up / down moving mechanism 124. Then, for example, first, the air accumulated in the upper portions of the ink outlet paths 91M to 91B is discharged through the second cap member 123, and then the ink is discharged from the nozzles through the first cap member 122. If only the first cap member 122 is used to discharge the air from the ink outlet path 91 M to 91 B, a large amount of ink must be discharged. Air can be discharged and the inkjet head 30 can be recovered.
- the valve body 102 is always pressed downward by the coil spring 103, and the seal material 102c is in contact with the valve portion 102a and the valve seat surface ( The exhaust outlet 101b is closed while the sealing material 102c is pressed and clamped between the valve portion 102a and the opening end face 101C of the exhaust outlet 101b, and the exhaust valve 47M is closed.
- the valve rod 102b when the valve rod 102b is moved to the standby position, the valve rod 102b is pushed upward by the protruding shaft portion 121 of the second cap member 123, and the coil spring 103 is compressed.
- the sealing material 102c is a force that moves together with the valve portion 102a and a force that remains on the opening end surface 101C (valve seat surface), and the exhaust hole 101 is in communication with the groove portion 102d. That is, the exhaust outlet 101b is opened, and the exhaust valve 47M is opened.
- the air accumulated in the upper portions of the ink outlet paths 91M to 91B can be exhausted from the exhaust outlet 101b to the atmosphere via the small diameter hole portion 101B and the suction arch I pump 125.
- the plurality of ink outlet paths are substantially the same length and extend in the vertical direction, the ink that flows into the ink inlet of the inkjet head in each ink outlet path.
- the air can be well separated from the air, accumulated in the upper space of the ink outlet path, and discharged to the outside through the air discharge port that is opened and closed by the exhaust valve.
- the ink outlet passage 91 and the exhaust valve device 45 are formed substantially in parallel, and the air discharge port 46 at the upper end of the ink outlet passage 91 and the exhaust valve device 45 are connected by an exhaust passage formed on the upper surface of the ink case. Therefore, the effects (1) to (4) can be obtained with a simple configuration.
- the ink tank 30 is provided with 40 ink reservoir chambers 41 to 44 that are scanned with respect to the recording medium together with the ink jet head 30, and the pressure variation of the ink ejected from the ink jet head 30 and the like. Effective recording with high quality Can do.
- the ink discharged from the ink storage chambers 41 to 44 flows through a flat surface to the lower part of each ink outlet path 91 (FIGS. 11 to 14, 21 to 21). 24).
- the ink flows through the inclined surface (indicated by 48Ya in FIGS. 26 to 29) to the lower part of each ink outlet path 91.
- FIGS. 26 to 29 are diagrams corresponding to FIGS. 11 to 14, respectively.
- the ink outlet 40d has a number of ink outlets 91M to 91B corresponding to the number of the ink reservoirs 41 to 44, and the inkjet head 30 behind the buffer 40b. (Fig. 15, Fig. 26 to Fig. 29).
- the ink outlet passages 91M to 91B are V forward between the uppermost yellow ink storage chamber 41 and the lowermost black ink storage chamber 44 so as to overlap the ink outlets of both ink storage chambers in the vertical direction.
- the enlarged portions are formed as ink guide passage portions 48M, 48Y, 48C, and 48B (FIGS. 26 to 29).
- the ink guide passage portions 48M to 48B are connected to the ink storage chambers 41 to 44, respectively.
- each of the ink storage chambers 41 to 44 is an ink that is located below the ink storage chambers 41 to 44 of the ink outlet passages 91M to 91B via the ink guide passage portions 48M to 48B. It flows into the lower part of the lead-out path 94M to 94B.
- each of the ink guide passage portions 48M to 48B includes “a portion that flows into the lower portion of each ink reservoir chamber S into the ink outlet passage”.
- the ink guide passage portion 48M force ink storage chamber 42 is replaced with the ink guide passage portion 48Y force S ink storage chamber 41.
- the ink guide passage portion 48C corresponds to the ink storage chamber 43
- the ink guide passage portion 48B corresponds to the ink storage chamber 44, and communicates with each other.
- Air can be well separated from the intended ink, accumulated in the upper space of the ink outlet passages 91 M to 91 B, and discharged to the outside through each air outlet 46 opened and closed by each exhaust valve 47 . Therefore, the upper space force of the ink outlet passages 91M to 91B When the ink is led out from the ink storage chambers 41 to 44 into the ink outlet passages 91M to 91B through the ink guide passage portions 48M to 48B, the air contained in the ink is separated. It functions as an accumulator that accumulates.
- the downstream side portion thereof, that is, the portion facing the ink outlet passages 91M to 91B is the ink outlet passage 91M. It is formed as an inclined guide surface 48Ma to 48Ba whose height decreases as it approaches ⁇ 91B.
- the inclined guide surfaces 48Ma to 48Ba are the ink in the ink storage chambers 41 to 44 and the ink outlet paths 91M to 91B below the ink storage chambers 41 to 44 with respect to the ink guide passage portions 48M to 48B. It is configured to function as an “ink communication portion” that maintains or facilitates the connection with the ink in the lower ink discharge path 94M to 94.
- each of the ink outlet paths 91M to 91B is formed in parallel so as to extend in the vertical direction across the upper and lower ink cases 71 and 72, and each lower end thereof is below the inclined guide surfaces 48Ma to 48Ba.
- Ink supply port portions 39M to 39M connected to the respective ink inlets (only 32a shown in FIG. 4) of the inkjet head 30 through the ink passage ports (only 33a shown in FIG. 4) of the reinforcing frame 33 Opened as 39B.
- each upper end portion is connected to a plurality of air discharge ports 46M, 46C, 46Y, 46B arranged substantially in a plane, and through the exhaust valves 47M to 47B that can open and close each air discharge port 46M to 46B. Open to the outside.
- FIG. 4 shows the two embodiments described above, and the inclined guide surfaces 48Ma to 48Ba are provided, but the other portions are the same as those of the present embodiment. [0088] (Connection between ink storage chambers 41 to 44 and ink outlet 91)
- each of the ink storage chambers 41 to 44 is the same as that of the above-described two embodiments, and an inclined guide surface serving as an ink communication portion between the ink outlet of each ink storage chamber and the ink outlet path 91. Is different in that it is provided.
- the connection between each of the ink storage chambers 41 to 44 and the ink outlet path 91 will be described focusing on the differences between the present embodiment and the two embodiments.
- the ink outlet 41c of the yellow ink storage chamber 41 penetrates from the bottom surface of the ink storage chamber 41 to the lower surface 71b of the upper ink case 71, and passes through the ink guide passage portion 48Y to the ink outlet passage 91 Y (FIG. 17, FIG. 26). Connected).
- a guide wall 64Y that divides the space below the ink outlet 41c from the ink outlet path 91Y side is formed at the periphery of the lower surface of the ink outlet 41c on the ink outlet path 91Y side.
- the lower end of the guide wall 64Y is lower than the upper end of the ink outlet path 91Y and is spaced from the upper end of the inclined guide surface 48Ya, and the space below the ink outlet 41c passes through the inclined guide surface 48Ya. It is connected to the lower part 94Y (finally, the bottom part of the ink outlet path 91Y).
- the ink outlet 42c of the magenta ink storage chamber 42 is opened at the bottom 42a in the vicinity of the left rear corner, which is located diagonally to the ink inlet 42b.
- the ink outlet 42c passes through the upper ink case 71 and is connected to one end of the connection path 65M.
- the other end of the connection path 65M passes through the upper ink case 71 from the upper surface to the lower surface through the ink guide path portion 48M. It is connected to the link outlet 91M.
- a guide wall 64M that divides the space below the other end opening of the connection path 65M from the ink outlet path 91M side is formed at the periphery of the ink outlet path 91M side of the other end opening of the connection path 65M. Yes.
- the lower end of the guide wall 64M is lower than the upper end of the ink outlet path 91M and is spaced from the upper end of the inclined guide surface 48Ma, and the space below the other end opening of the connection path 65M passes through the inclined guide surface 48Ma. And is connected to the lower part 94M of the ink outlet path (finally, the bottom of the ink outlet path 91M).
- the ink outlet 43c of the cyan ink storage chamber 43 is opened at the bottom 43a near the left rear corner in the ink storage chamber 43 and passes through the lower ink case 72 in the thickness direction. It is connected to a connection path 68C (see FIG. 19) formed on the lower surface of the side ink case 72.
- the rear part of the connection path 68C and the ink storage chamber 44 is flat with the ink outlet paths 91M to 91B.
- the other end 68Ca of the connection path 68C penetrates the lower ink case 72 from the bottom to the top so that the ink guide passage section 48C is positioned below the upper end of the ink outlet path 91C.
- the black ink ink outlet 44c for allowing the black ink in the ink storage chamber 44 to flow out is opened in the bottom 44a near the right rear corner in the ink storage chamber 44, and the lower ink case 72 is connected to the bottom 44a. It penetrates in the vertical direction, opens to the ink guide passage 48B at a position below the upper end of the ink lead-out path 91C, passes through the inclined guide surface 48Ca, and the lower part of the ink lead-out path 94B (finally, the bottom of the ink lead-out path 91B) )It is connected to the.
- the ink flow is the same as in the two embodiments described above, but the ink that has flowed out of each ink storage chamber flows into the ink outlet passage through the ink guide passage portion. .
- the yellow ink that has flowed out of the ink storage chamber 41 reaches the ink outlet passage 91 Y through the ink guide passage portion 48Y, and is supplied to the inkjet head 30 from the ink supply port portion 39Y.
- the magenta ink that has flowed out of the ink storage chamber 42 passes through the ink guide passage portion 48M, reaches the ink outlet passage 91M, and is supplied from the ink supply port portion 39M to the inkjet head 30.
- FIG. 26 the yellow ink that has flowed out of the ink storage chamber 41 reaches the ink outlet passage 91 Y through the ink guide passage portion 48Y, and is supplied to the inkjet head 30 from the ink supply port portion 39Y.
- the ink that has flowed out of the ink storage chamber 43 reaches the ink outlet passage 91C through the ink guide passage portion 48C, and is supplied to the inkjet head 30 from the ink supply port portion 39C.
- the black ink that has flowed out of the ink storage chamber 44 reaches the ink outlet passage 91B through the ink guide passage portion 48B, and is supplied to the ink jet head 30 with the ink supply port portion 39B.
- each of the ink that has flowed out of the ink storage chambers 41 to 44 flows into the ink outlet passages 91M to 91B via the ink guide passage portions 48M to 48B, and therefore, in each of the ink outlet passages 91M to 91B, Air is satisfactorily separated from the ink flowing into the ink outlet channels 48M to 48B, and the air trapped by the filter provided at each ink inlet of the inkjet head is floated, and the air is discharged into the upper space of the ink outlet channels 91M to 91B.
- the accumulated air can be discharged to the outside through an air discharge port that is opened and closed by an exhaust valve device 45.
- FIGS. 30 and 32 show a state where a large amount of air is accumulated in the upper part of the ink outlet paths 91M to 91B.
- a large amount of air accumulates in the upper part of the ink outlet passages 91M to 91B and the ink level in the ink outlet passages 91M to 91B falls, the liquid level and the ink in the ink storage chambers 41 to 44 are reduced.
- the connection part with becomes thinner.
- the ink liquid level in the ink outlet path 91Y falls below the guide wall 64Y, the ink discharged from the ink outlet 41c of the ink reservoir 41 is transferred to the ink outlet path.
- the ink liquid level in the ink outlet path 91Y is inclined and guided.
- the surface 48Ya is located very close to the ink in the ink guide passage 48Y, and the ink liquid in the ink outlet path 91Y is further affected by the surface tension of the ink and the force that the inkjet head draws ink when printing. The connection between the surface and the ink in the ink guide passage 48Y is maintained.
- the inclined guide surfaces 48Ya and 48Ba below the ink guide passage portions 48Y and 48B are formed as horizontal surfaces, when the liquid level in the ink outlet passages 91Y and 91B is lowered, It becomes difficult for the ink to move from the ink storage chambers 41 and 44 to the ink outlet passages 91 and 9 IB through a horizontal surface, and the ink supply is cut off at an early stage. Ink supply is maintained.
- the ink is drawn into the ink guide ink passage 91Y side of the ink guide passage 48Y, flows along the inclined guide surface 48Ya, and the ink liquid in the ink guide passage 91Y. Connect to the surface early.
- the ink exposed from the ink outlet 44c to the ink guide passage 48B is pulled up by the negative pressure and flows along the inclined guide surface 48Ba, and the ink is discharged. Connected early to the ink level in path 91B.
- the ink outlet channels 9 pass from the ink storage chambers 41 and 44 through the horizontal surfaces. It may take time for the ink to move to 1Y and 91B, and during that time, air in the upper space of the ink outlet paths 91Y and 91B may be drawn into the ink jet head, causing the ink jet head to be unsuccessful or poorly ejected.
- the ink in the ink storage chambers 41, 44 is connected to the ink in the ink outlet passages 91Y, 91B at an early stage via the inclined guide surfaces 48Ya, 48Ba, so that the ink for the recovery process of the inkjet head is insufficient. It can be supplied without any problem and the recovery process can be performed reliably.
- the ink communication portion is formed on the lower wall portion of the ink guide passage portion and is an inclined guide surface having one inclined plane force that decreases in height as it approaches the ink outlet passage.
- the inclined guide surface does not need to be composed of one inclined plane. Two or more inclined planes can be combined to form a bent convex surface or a bent concave surface to maintain the ink connection. Is possible.
- the ink communication portion can be configured by a guide surface using a curved surface such as a curved convex surface or a curved concave surface, and further, the ink guide passage It is also possible to configure the ink communicating portion using one or a plurality of groove-shaped guide concave portions formed on the lower wall portion of the portion and inclined so that the height of the bottom surface becomes lower as approaching the ink outlet path. .
- the ink guide passage is provided with one or more groove-shaped guide recesses that are inclined so that the height of the bottom surface decreases as the ink guide path is approached, the ink storage
- the ink of the chamber force is guided to the guide recess and easily flows into the ink outlet path.
- the guide recess has a groove shape, it is an advantageous structure for maintaining or facilitating ink connection through the groove.
- the direction in which the ink cases 71 and 72 are arranged can be the left and right direction. When this configuration is used, it can be arranged compactly in the width direction, and the effects of at least one of the three embodiments described above can be achieved.
Landscapes
- Ink Jet (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006800034834A CN101111383B (zh) | 2005-05-13 | 2006-05-11 | 喷墨记录设备 |
JP2007528314A JP4968071B2 (ja) | 2005-05-13 | 2006-05-11 | インクジェット記録装置 |
EP06746276A EP1880856B1 (en) | 2005-05-13 | 2006-05-11 | Ink jet recording apparatus |
US11/691,254 US7901060B2 (en) | 2005-05-13 | 2007-03-26 | Ink-jet recording apparatus |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-140494 | 2005-05-13 | ||
JP2005140494 | 2005-05-13 | ||
JP2005360587 | 2005-12-14 | ||
JP2005-360586 | 2005-12-14 | ||
JP2005360586 | 2005-12-14 | ||
JP2005-360587 | 2005-12-14 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/691,254 Continuation-In-Part US7901060B2 (en) | 2005-05-13 | 2007-03-26 | Ink-jet recording apparatus |
Publications (1)
Publication Number | Publication Date |
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WO2006121109A1 true WO2006121109A1 (ja) | 2006-11-16 |
Family
ID=37396617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2006/309467 WO2006121109A1 (ja) | 2005-05-13 | 2006-05-11 | インクジェット記録装置 |
Country Status (5)
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US (1) | US7901060B2 (ja) |
EP (1) | EP1880856B1 (ja) |
JP (1) | JP4968071B2 (ja) |
CN (1) | CN101111383B (ja) |
WO (1) | WO2006121109A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2008246889A (ja) * | 2007-03-30 | 2008-10-16 | Brother Ind Ltd | 液体供給装置及び液体吐出装置 |
JP2009073120A (ja) * | 2007-09-21 | 2009-04-09 | Brother Ind Ltd | 液滴吐出装置 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE602004005668T2 (de) * | 2003-02-04 | 2007-12-27 | Brother Kogyo K.K., Nagoya | Luftblasenentfernung bei einem tintenstrahldrucker |
US8454135B2 (en) | 2003-02-04 | 2013-06-04 | Brother Kogyo Kabushiki Kaisha | Air bubble removal in an ink jet printer |
US8038272B2 (en) * | 2007-09-21 | 2011-10-18 | Brother Kogyo Kabushiki Kaisha | Liquid-droplet jetting apparatus |
CN201362042Y (zh) * | 2009-03-19 | 2009-12-16 | 珠海天威技术开发有限公司 | 打印字车适配器及连续供墨系统 |
JP6161869B2 (ja) | 2012-03-05 | 2017-07-12 | セイコーエプソン株式会社 | 液体噴射装置 |
JP6409508B2 (ja) * | 2014-10-31 | 2018-10-24 | ブラザー工業株式会社 | 液体消費装置 |
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JP3520658B2 (ja) | 1996-04-16 | 2004-04-19 | セイコーエプソン株式会社 | インクジェット式記録装置 |
JP2004255862A (ja) * | 2003-02-04 | 2004-09-16 | Brother Ind Ltd | インクジェットプリンタ |
JP2005280075A (ja) | 2004-03-29 | 2005-10-13 | Brother Ind Ltd | インクジェットプリンタ及びそのインク供給装置のリーク検査方法 |
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AU7244394A (en) * | 1993-10-20 | 1995-05-08 | Lasermaster Corporation | Automatic ink refill system for disposable ink jet cartridges |
JPH10230623A (ja) * | 1997-02-21 | 1998-09-02 | Hitachi Koki Co Ltd | 加熱溶融形インクを用いたインクジェットプリンタの気泡除去装置およびその方法 |
JPH11192720A (ja) * | 1998-01-05 | 1999-07-21 | Seiko Epson Corp | インクジェット式記録装置、インク充填方法、及びインク補給方法 |
FR2782032B1 (fr) * | 1998-08-10 | 2000-10-06 | Siantec | Machine d'impression directe par projection de gouttes d'encre sur un support |
US6863390B2 (en) * | 2001-08-21 | 2005-03-08 | Seiko Epson Corporation | Head unit in ink jet printer |
DE602004005668T2 (de) | 2003-02-04 | 2007-12-27 | Brother Kogyo K.K., Nagoya | Luftblasenentfernung bei einem tintenstrahldrucker |
US7303271B2 (en) * | 2003-10-24 | 2007-12-04 | Brother Kogyo Kabushiki Kaisha | Ink jet printer |
US7413295B2 (en) | 2004-03-19 | 2008-08-19 | Brother Kogyo Kabushiki Kaisha | Inkjet printer with delivery chamber |
JP4254631B2 (ja) * | 2004-06-25 | 2009-04-15 | ブラザー工業株式会社 | インクジェットプリンタ用バッファタンクおよびインクジェットプリンタ |
-
2006
- 2006-05-11 JP JP2007528314A patent/JP4968071B2/ja active Active
- 2006-05-11 EP EP06746276A patent/EP1880856B1/en not_active Expired - Fee Related
- 2006-05-11 WO PCT/JP2006/309467 patent/WO2006121109A1/ja active Application Filing
- 2006-05-11 CN CN2006800034834A patent/CN101111383B/zh not_active Expired - Fee Related
-
2007
- 2007-03-26 US US11/691,254 patent/US7901060B2/en not_active Expired - Fee Related
Patent Citations (3)
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JP3520658B2 (ja) | 1996-04-16 | 2004-04-19 | セイコーエプソン株式会社 | インクジェット式記録装置 |
JP2004255862A (ja) * | 2003-02-04 | 2004-09-16 | Brother Ind Ltd | インクジェットプリンタ |
JP2005280075A (ja) | 2004-03-29 | 2005-10-13 | Brother Ind Ltd | インクジェットプリンタ及びそのインク供給装置のリーク検査方法 |
Cited By (2)
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JP2008246889A (ja) * | 2007-03-30 | 2008-10-16 | Brother Ind Ltd | 液体供給装置及び液体吐出装置 |
JP2009073120A (ja) * | 2007-09-21 | 2009-04-09 | Brother Ind Ltd | 液滴吐出装置 |
Also Published As
Publication number | Publication date |
---|---|
EP1880856B1 (en) | 2012-11-07 |
US7901060B2 (en) | 2011-03-08 |
CN101111383A (zh) | 2008-01-23 |
CN101111383B (zh) | 2012-02-01 |
JPWO2006121109A1 (ja) | 2008-12-18 |
EP1880856A1 (en) | 2008-01-23 |
EP1880856A4 (en) | 2011-03-02 |
JP4968071B2 (ja) | 2012-07-04 |
US20070188565A1 (en) | 2007-08-16 |
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