WO2015151334A1 - 液体供給装置及び画像記録装置 - Google Patents
液体供給装置及び画像記録装置 Download PDFInfo
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- WO2015151334A1 WO2015151334A1 PCT/JP2014/081574 JP2014081574W WO2015151334A1 WO 2015151334 A1 WO2015151334 A1 WO 2015151334A1 JP 2014081574 W JP2014081574 W JP 2014081574W WO 2015151334 A1 WO2015151334 A1 WO 2015151334A1
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- Prior art keywords
- ink
- tank
- pump
- supply
- flow path
- Prior art date
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Classifications
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- 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
- B41J2/18—Ink recirculation systems
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- 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
-
- 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
- B41J2/17596—Ink pumps, ink valves
-
- 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
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
-
- 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
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14016—Structure of bubble jet print heads
- B41J2/14032—Structure of the pressure chamber
- B41J2/14048—Movable member in the chamber
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- 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
- B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
- B41J2202/01—Embodiments of or processes related to ink-jet heads
- B41J2202/12—Embodiments of or processes related to ink-jet heads with ink circulating through the whole print head
Definitions
- the present invention relates to a liquid supply apparatus and an image recording apparatus, and more particularly to a pressure control technique for supplying a liquid to a liquid discharge head.
- a damper provided in the ink flow path.
- This damper is configured to include a liquid chamber communicating with the ink flow path, and a gas chamber provided so as to sandwich the liquid chamber and the elastic film, and a technique for protecting the elastic film from excessive deformation and breakage.
- Patent Document 1 includes a stopper member that limits a movable range of a movable film in a back pressure adjusting device for a liquid discharge head partitioned into a liquid storage chamber and a gas storage chamber by a deformable movable film. The technology is described.
- Patent Document 2 describes an air damper that employs a structure that prevents a film from bulging by fixing a reinforcing plate from the film surface of an ink reservoir.
- the techniques described in the cited documents 1 and 2 have a problem in that the number of parts increases and the cost increases because the stopper member is separately provided in the liquid storage chamber. Further, it is difficult to define the position where the stopper member is provided, and in order to increase the expansion / contraction range of the film and increase the control range, it is necessary to widen the position where the stopper member is provided, leading to an increase in the size of the apparatus. was there.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a liquid supply apparatus and an image recording apparatus that do not cause film tearing even when abnormal pressure occurs.
- one aspect of the liquid supply apparatus includes: an ink flow path that connects an ink jet head that discharges ink from a nozzle and an ink tank that stores ink; and an ink flow path that is provided in the ink flow path.
- a pump that applies pressure to the ink in the path, a back pressure tank provided between the ink jet head and the pump, a liquid chamber that communicates with the ink flow path through the flow port, and gas is stored.
- a back pressure tank having a gas chamber and an elastic membrane that separates the liquid chamber and the gas chamber, and a regulating member disposed on an extension surface of the flow port on the inner wall surface of the liquid chamber, the pump applied to the ink And a regulating member that maintains the elastic film on the inner side of the extended surface when the elastic film is sucked into the flow port by pressure.
- the elastic film can be maintained inside the extended surface of the inner wall surface of the liquid chamber, and the elastic film can be prevented from being broken.
- the extended surface at the flow port of the inner wall surface of the liquid chamber refers to the inner wall surface of the liquid chamber that is assumed to exist at the position of the opening when the opening of the flow port does not exist in the liquid chamber, It is a virtual surface having a continuous shape from the inner wall surface around the circulation port.
- the regulating member preferably divides the distribution port into a plurality of regions. Thereby, an elastic film can be appropriately maintained inside the extended surface of the inner wall surface of the liquid chamber.
- the regulating member is preferably divided into a plurality of regions having a size determined based on the tensile strength of the elastic membrane and the maximum applied pressure of the pump. Thereby, an elastic film can be appropriately maintained inside the extended surface of the inner wall surface of the liquid chamber.
- the distribution port may include a first distribution port that communicates with the ink jet head via the ink flow path and a second distribution port that communicates with the pump via the ink flow path.
- the first regulating member disposed in the first flow port is configured so that the elastic film is placed on the inner side of the extension surface when the elastic film is sucked into the first flow port by the pressure applied to the ink by the pump. It is preferable that the first distribution port is divided into a plurality of regions having the maximum size that can be maintained. Thereby, a pressure loss can be made small and a back pressure tank can buffer the pressure of a pump appropriately. And an elastic film can be appropriately maintained inside the extended surface of the inner wall surface of a liquid chamber.
- the second restricting member disposed at the second circulation port has the second circulation in a plurality of regions having a minimum size capable of flowing the ink through the ink flow path by the pressure applied to the ink by the pump.
- the mouth is preferably divided.
- the regulating member preferably divides the circulation port into a plurality of circular regions. Thereby, pressure loss can be made small.
- the liquid chamber may include a discharge port that communicates with the ink tank via the discharge channel.
- the regulating member is preferably formed integrally with the liquid chamber. Thereby, it is not necessary to prepare another part, and an arrangement position can be set appropriately.
- an image recording apparatus includes: an ink tank that stores ink; an inkjet head that ejects ink from nozzles; an inkjet head that ejects ink from nozzles; and ink that stores ink
- a back pressure tank having a liquid chamber communicating with the ink flow path via the port, a gas chamber storing gas, and an elastic film separating the liquid chamber and the gas chamber, and a flow port on the inner wall surface of the liquid chamber
- the restricting member disposed on the extended surface of the ink, when the elastic film is sucked into the flow port by the pressure applied to the ink by the pump, the elastic film is maintained inside the extended surface
- Supply means using a liquid supply device comprising a control member, the supply means disposed between the ink tank and the ink jet head, and supplying ink stored in the ink tank to the ink jet head, the ink jet head,
- a moving means for relatively moving the recording medium and a recording control means for recording an image on the recording surface of the recording medium by ejecting ink from the nozzles of the inkjet head while relatively moving the recording medium are provided.
- the pressure of the pump can be appropriately buffered by the back pressure tank, so that a high-quality image can be recorded.
- an ink channel that communicates an ink jet head that ejects ink from a nozzle and an ink tank that stores ink, and a pump that is provided in the ink channel and applies pressure to the ink in the ink channel
- a back pressure tank provided between the inkjet head and the pump, a liquid chamber communicating with the ink flow path through the flow port, a gas chamber storing gas, a liquid chamber and a gas chamber,
- a back pressure tank having an elastic membrane that isolates the liquid chamber, and a regulating member disposed on an extension surface of the flow port on the inner wall surface of the liquid chamber, and the elastic membrane is sucked into the flow port by the pressure applied to the ink by the pump
- Supplied ink to Ettoheddo may comprise collecting means for collecting the ink tank. Thereby, ink can be circulated through the in
- FIG. 1 is a block diagram showing the overall configuration of the ink supply apparatus 100.
- FIG. 2 is an exploded view showing a structural example of the supply sub-tank 18.
- FIG. 3 is a perspective view of the liquid chamber side tank frame 220 of the present embodiment.
- 4A is a front view of the liquid chamber side tank frame 220 of the present embodiment as viewed from the inside of the accommodating portion 222
- FIG. 4B is a front view of the liquid chamber side tank frame 220 of the present embodiment. It is the rear view seen from the branch pipe part 224,226,228 side.
- FIG. 5A is a front view of the liquid chamber side tank frame 221 that is not provided with a restricting portion, and FIG.
- FIG. 5B is a rear view of the liquid chamber side tank frame 221 that is not provided with a restricting portion.
- FIG. 6 is a diagram illustrating a state of the elastic film 22 when an operation abnormality occurs in the recovery pump 120 when the liquid chamber side tank frame 221 having no restriction portion is used.
- FIG. 7 is a cross-sectional view taken along the line 7-7 in FIG. 2, and shows the state of the elastic membrane 22 when an operation abnormality occurs in the recovery pump 120 when the liquid chamber side tank frame 220 is used.
- FIG. 6 is a diagram illustrating an arrangement of a restriction portion 232 at the ink outlet 24.
- FIG. 9 shows the suction of the elastic film 22 in each size of each region 234a, 234b, 234c, 234d and each tensile strength of the elastic film 22 when the liquid chamber 24 is sucked at the maximum applied pressure of the recovery pump 120. It is a figure which shows the presence or absence.
- FIG. 10 is a diagram showing the relationship between the hole diameter of each region 234a, 234b, 234c, and 234d and the pressure loss at the ink outlet 24A.
- FIG. 11 is a diagram showing another shape of the divided region of the ink outlet 24A.
- FIG. 12 is a diagram illustrating the overall configuration of the inkjet recording apparatus 300.
- FIG. 13 is a block diagram illustrating an electrical configuration of the inkjet recording apparatus 300.
- the ink supply device 100 supplies the ink stored in the ink tank 52 to the inkjet head 50 that is the supply target of the ink, and collects ink that is not used in the inkjet head 50 to the ink tank 52.
- This is a circulation type liquid supply device that controls the internal pressure (back pressure) of the inkjet head 50 by the amount of ink fed.
- the ink supply device 100 includes a supply flow path 12 (an example of an ink flow path) that communicates the ink tank 52 and the inkjet head 50, and a recovery flow that communicates the inkjet head 50 and the ink tank 52. Road 112.
- a supply flow path 12 an example of an ink flow path
- a recovery flow that communicates the inkjet head 50 and the ink tank 52.
- the supply flow path 12 is provided with a pressure sensor 16, a supply sub tank 18, a supply pump 20, and the like.
- the recovery flow path 112 is provided with a pressure sensor 116, a recovery sub tank 118, a recovery pump 120, and the like.
- the inkjet head 50 is a head having a structure in which n head modules 51-1, 51-2,..., 51-n each provided with a plurality of nozzles for ejecting ink are connected.
- Each head module 51 has an ink supply port 51A and an ink discharge port 51B.
- the ink supply ports 51A of the head modules 51-1, 51-2,..., 51-n communicate with the supply flow path 12 through supply valves 14-1, 14-2,.
- each ink discharge port 51B communicates with the recovery flow path 112 via the recovery valves 114-1, 114-2, ..., 114-n, respectively.
- the supply valve 14 is a channel opening / closing means for switching between communication and blocking of the supply channel 12
- the recovery valve 114 is a channel opening / closing means for switching between communication and blocking of the recovery channel 112.
- the supply valve 14 and the recovery valve 114 are applied with a normally closed (or latched) electromagnetic valve whose opening and closing is controlled by a control signal, and even when the power is shut off when an emergency stop function is activated,
- the ink jet head 50 is configured not to leak ink.
- Dampers 15-1, 15-2,..., 15-n are respectively provided between the supply valves 14-1, 14-2,.
- the damper 15 is a pressure buffering means for suppressing ink pulsation generated by the ejection operation of the inkjet head 50.
- the pressure sensor 16 is a pressure measuring means that measures and outputs the internal pressure of the supply flow path 12
- the pressure sensor 116 is a pressure measuring means that measures and outputs the internal pressure of the recovery flow path 112.
- a sensor such as a semiconductor piezoresistive method, a capacitance method, or a silicon resonant method can be applied to the pressure sensors 16 and 116.
- a supply-side manifold 54 that is a temporary ink storage unit is provided, and the inkjet head 50 in the recovery flow path 112.
- a recovery sub-tank 118 (an example of a back pressure tank) is provided with a recovery-side manifold 154 that is a temporary ink storage unit.
- the supply side manifold 54 and the recovery side manifold 154 are communicated with each other by bypass passages 190 and 192, and the bypass passages 190 and 192 are provided with bypass passage valves 194 and 196, respectively.
- the supply pump 20 is a liquid pressure applying unit that applies pressure to the ink inside the supply channel 12
- the recovery pump 120 is a liquid pressure applying unit that applies pressure to the ink inside the recovery channel 112.
- a tube pump is applied to the supply pump 20 and the recovery pump 120.
- the supply pump 20 controls the pressure (liquid feeding amount) of the supply flow path 12 that supplies ink from the ink tank 52 to the inkjet head 50, and the recovery pump 120 collects ink from the inkjet head 50 to the ink tank 52 (circulation). Control the pressure (liquid feeding amount) of the recovery flow path 112.
- a pump having the same performance (capacity) can be applied to the supply pump 20 and the recovery pump 120.
- the supply pump 20 and the recovery pump 120 rotate only in one direction during the period when the operation of the inkjet head 50 is stopped (that is, the period when the ink flows stably), and the inkjet head 50 removes ink from the nozzles.
- the supply pump 20 increases the rotation speed, and the recovery pump 120 decelerates or reverses to increase the internal pressure of the inkjet head 50.
- a desired back pressure (negative pressure) is applied to the ink inside the nozzles of the inkjet head 50 so that the internal pressure of the supply flow path 12 is relatively higher than the internal pressure of the recovery flow path 112.
- the driving of the supply pump 20 and the recovery pump 120 is controlled.
- the supply sub-tank 18 is a pressure buffer device that is provided between the supply pump 20 and the inkjet head 50 and adjusts the pressure so as to suppress fluctuations in the internal pressure of the supply flow path 12.
- the supply sub-tank 18 has a liquid chamber 24 communicating with the supply flow path 12 via an ink outlet 24A (an example of a first circulation port) and an ink inlet 24B (an example of a second circulation port), and gas is stored therein. And an elastic film 22 that separates the liquid chamber 24 and the air chamber 26 from each other.
- the ink outlet 24A communicates with the inkjet head 50 via the supply valve 14 via the supply channel 12
- the ink inlet 24B communicates with the ink tank 52 via the supply pump 20 via the supply channel 12.
- the supply sub-tank 18 has a bubble discharge port 27 (an example of a third circulation port).
- the bubble discharge port 27 communicates with the ink tank 52 via the drain flow path 28 and the drain valve 30. Yes.
- the supply sub tank 18 has a pressure buffering function that suppresses fluctuations in the internal pressure of the ink jet head 50 and fluctuations in the internal pressure of the supply flow path 12 due to the pulsating flow from the operation of the supply pump 20.
- the drain channel 28 is a channel for forcibly discharging the ink in the liquid chamber 24.
- the drain valve 30 is opened, the ink in the liquid chamber 24 is sent to the ink tank 52.
- the supply sub tank 18 includes an air flow path 32, an air connect valve 34, an air tank 36, an air communication path 38, and an air valve 40 as a gas elasticity adjusting unit for determining the pressure buffering performance of the supply sub tank 18.
- the air chamber 26 of the supply sub-tank 18 is provided with an air channel communication port 26B that communicates with the air channel 32.
- the air connect valve 34 is an air flow path opening / closing means that switches between communication and blocking of the air flow path 32, and the air chamber 26 is in communication with the air tank 36 through the air connect valve 34.
- the air communication path 38 is provided with an air valve 40 that switches between communication and blocking of the air communication path 38, and the air tank 36 communicates with the atmosphere via the air communication path 38.
- a normally open electromagnetic valve is used for the air connect valve 34. Further, the normally closed electromagnetic valve is applied to the air valve 40 so that ink does not leak out from the inkjet head 50 even when the power is shut off when an emergency stop function is activated.
- the air chamber 26 communicates with the air tank 36 by opening the air connect valve 34, and can increase the volume of the air chamber 26 according to the pressure control of the ink feeding liquid. Furthermore, the air tank 36 and the air chamber 26 can be communicated with the atmosphere by opening the air valve 40.
- the air tank 36 functions as a buffer tank for the air chamber 26.
- the recovery sub tank 118 is a pressure buffer device that is provided between the inkjet head 50 and the recovery pump 120 and adjusts the pressure so as to suppress fluctuations in the internal pressure of the recovery flow path 112.
- the collection sub tank 118 has the same configuration as the supply sub tank 18. That is, a liquid chamber 124 that communicates with the recovery flow path 112 via an ink outlet 124A and an ink inlet 124B (an example of a circulation port), a gas chamber 126 that stores gas, a liquid chamber 124, and a gas chamber 126. And an elastic film 122 that isolates the film.
- the ink inlet 124 ⁇ / b> B communicates with the inkjet head 50 via the recovery valve 114, and the ink outlet 124 ⁇ / b> A communicates with the ink tank 52 via the recovery pump 120.
- the recovery sub tank 118 has a bubble discharge port 127, and the bubble discharge port 127 communicates with the ink tank 52 via the drain flow path 128 and the drain valve 130.
- the recovery sub-tank 118 includes an air flow path 132, an air connect valve 134, an air tank 136, an atmosphere communication path 138, and an air valve 140 as a gas elasticity adjusting unit for determining the pressure buffering performance of the recovery sub-tank 118. It operates in the same manner as the gas elasticity adjusting portion of the supply sub tank 18 of the supply sub tank 18.
- the ink tank 52 is an ink storage unit that stores ink to be supplied to the inkjet head 50 that discharges ink from the nozzles.
- the ink stored in the ink tank 52 is supplied to the inkjet head 50 by the supply pump 20 via the supply sub tank 18 and the supply valve 14.
- Ink that is not used in the inkjet head 50 is collected by the collection pump 120 into the ink tank 52 via the collection valve 114 and the collection sub tank 118.
- a degassing module 160 and a one-way valve 162 for preventing the backflow of ink are provided between the ink tank 52 and the supply pump 20, and between the supply pump 20 and the supply sub tank 18.
- a filter 164 and a heat exchanger 166 are provided.
- the ink sent out from the ink tank 52 is subjected to a deaeration process by the deaeration module 160, air bubbles and foreign matters are removed by the filter 164, a temperature adjustment process is performed by the heat exchanger 166, and then sent to the supply sub tank 18. .
- a one-way valve 170 for preventing a back flow of ink and a filter 172 are provided between the deaeration module 160 and the recovery pump 120. Even when ink is sent from the ink tank 52 to the collection sub-tank 118, predetermined deaeration processing and filter processing are performed.
- the ink supply device 100 includes safety valves (relief valves) 174 and 176.
- safety valves relieve valves
- the safety valves 174 and 176 operate.
- the internal pressures of the supply channel 12 and the recovery channel 112 are reduced.
- one-way valves 178 and 180 are provided for preventing the back flow of ink when the supply pump 20 and the recovery pump 120 are operated in reverse.
- the main tank 56 stores ink supplied to the ink tank 52.
- the ink supply device 100 operates the replenishment pump 182 to send the ink in the main tank 56 to the ink tank 52.
- the main tank 56 is provided with a filter 184 therein.
- the ink supply apparatus 100 configured as described above operates the supply pump 20 and the recovery pump 120 to provide a differential pressure between the supply side manifold 54 and the recovery side manifold 154 to circulate ink.
- the supply pump 20 is rotated forward to generate negative pressure in the supply-side manifold 54, while the recovery pump 120 is operated in reverse to move to the recovery-side manifold 154.
- a negative pressure lower than that on the supply side is generated, ink is allowed to flow from the supply side manifold 54 to the recovery side manifold 154 via the inkjet head 50, and further, the ink is circulated via the recovery flow path 112, the recovery sub tank 118, and the like. it can.
- the second bypass passage valve 196 provided in the second bypass passage 192 is opened, and the supply side manifold 54 and the recovery side manifold 154 are connected via the second bypass passage 192. It is good to communicate. It should be noted that any one of the bypass channels 190 and 192 may be provided as long as it has a diameter that does not cause pressure loss during pressurization.
- the supply sub tank 18 includes an elastic film 22, an air chamber side tank frame 210, and a liquid chamber side tank frame 220.
- the elastic membrane 22 has a dome portion 202 and a flange portion 204.
- the dome portion 202 has a dome shape that protrudes toward the liquid chamber side tank frame 220, and enhances the pressure buffering performance particularly in the ink supply in a state where the inside of the liquid chamber 24 is maintained at a negative pressure.
- the flange portion 204 is provided with eleven holes.
- the material of the elastic film 22 a material having good moldability, low gas permeability, and good chemical wettability with a liquid is selected.
- the material having good chemical wettability means a material that is chemically stable, that is, does not deform (dissolve or swell) or change physical properties due to contact with a liquid.
- the material needs to be flexible and easily deformed.
- Specific examples include thermoplastic elastomers.
- a styrenic thermoplastic elastomer is used.
- the elastic body 22 is produced by Arneston SH50NS manufactured by Kuraray Plastics.
- the elastic film 22 is not limited to a thermoplastic elastomer but may be a vulcanized rubber.
- the air chamber side tank frame 210 has a housing part 212, a pipe part 214, and a flange part 216.
- the accommodating part 212 comprises the air chamber 26 (refer FIG. 1) inside.
- the inner wall surface of the accommodating part 212 is formed in a shape that receives the dome shape of the elastic film 22, and a pipe part that communicates with the air flow passage communication port 26 ⁇ / b> B (see FIG. 1) at a position corresponding to the apex of the accommodating part 212.
- 214 is provided.
- the flange portion 216 is provided with eleven holes.
- the liquid chamber side tank frame 220 has a housing part 222, branch pipe parts 224, 226, 228 and a flange part 230.
- the accommodating part 222 comprises the liquid chamber 24 (refer FIG. 1) inside.
- the inner wall surface 223 of the accommodating portion 222 is formed in a shape that receives the dome shape of the elastic film 22, and the ink outlet 24A, the ink inlet 24B, and the bubble outlet 27 (see FIG. 1) are opened.
- the accommodating portion 222 is provided with branch tube portions 224, 226, and 228.
- the accommodating portion 222 and the branch tube portions 134, 136, and 138 include an ink outlet 24A, an ink inlet 24B, and a bubble outlet 27, respectively. It communicates through.
- the flange portion 230 is provided with eight holes and three protrusions.
- Three of the eleven holes of the flange portion 204 of the elastic membrane 22 are inserted into the three protrusions of the flange portion 230 of the liquid chamber side tank frame 220, whereby the elastic membrane 22 is inserted. Is positioned with respect to the liquid chamber side tank frame 220.
- Bolts (not shown) are inserted into eight holes of each of the flange portion 216 of the air chamber side tank frame 210, the flange portion 204 of the elastic membrane 22 and the flange portion 230 of the liquid chamber side tank frame 220, and are mutually connected.
- a supply sub-tank 18 is configured.
- one end of a joint 242 is inserted into the branch pipe portion 224.
- a bolt 244 is provided at the other end of the joint 242, and a tube (not shown) constituting the supply flow path 12 is connected to the bolt 244.
- joints are similarly inserted in the branch pipe portions 226 and 228, and the tubes constituting the supply flow path 12 and the drain flow path 28 are connected to each other.
- a restriction portion 232 (an example of a first restriction member) formed integrally with the air chamber side tank frame 210 is disposed at the ink outlet 24 ⁇ / b> A.
- the restricting portion 232 is a member that divides the ink outlet 24A into a plurality of regions, and the ink outlet 24A is divided into four regions 234a, 234b, 234c, and 234d by the restricting portion 232.
- a restricting portion 236 (an example of a second restricting member) formed integrally with the air chamber side tank frame 210 is disposed at the ink inflow port 24B.
- the ink inflow port 24B is provided in the region 238a by the restricting portion 236. , 238b, 238c, and 238d.
- the bubble discharge port 27 is not provided with a restriction unit, but the bubble discharge port 27 may be provided with a restriction unit and divided into a plurality of regions.
- the liquid chamber side tank frame 221 not provided with the restricting portion shown in FIG. 5 is different from the liquid chamber side tank frame 220 of the present embodiment in that the restricting portions 232 and 236 are not provided.
- the elastic film 22 is formed in the housing portion 222 of the liquid chamber side tank frame 221 that is not provided with a restricting portion. Stick to the inner wall surface 223. Further, the elastic film 22 is sucked to the outside of the extended surface 223A (see FIG. 8) of the inner wall surface 223 from the ink outlet 24A.
- the extended surface 223A is a surface assumed to exist at the position of the opening of the ink outlet 24A when the ink outlet 24A does not exist in the liquid chamber 24, and is around the ink outlet 24A. This is an imaginary surface having a shape continuous from the inner wall surface 223. As a result, a protrusion shape is generated. There is a problem in that the elastic film 22 is partially stretched to cause the tearing of the elastic film 22.
- the liquid chamber side tank frame 220 of the present embodiment is provided with a regulating portion 232, and the ink outlet 24A is divided into four regions 234a, 234b, 234c and 234d.
- the liquid chamber side tank frame 220 of the present embodiment is used for the supply sub-tank 18, even if an operation abnormality of the recovery pump 120 occurs and an abnormal pressure occurs in the liquid chamber 24, as shown in FIG.
- the restricting portion 232 serves as a stopper, and the elastic film 22 is not sucked into the ink outlet 24A (each region 234a, 234b, 234c and 234d) It is maintained inside the extended surface 223A of 223, and no protrusion shape is generated.
- the restricting portion 232 has a surface 232A on the liquid chamber 24 side disposed along the extended surface 223A of the inner wall surface 223 of the liquid chamber 24 at the ink outlet 24A. Is sucked into the ink outlet 24A, the shape is maintained along the extended surface 223A of the inner wall surface 223.
- the shape along the extended surface 223A of the inner wall surface 223 refers to a shape that does not generate the protrusion shape as shown in FIG. 6 in the elastic film 22, and is not limited to a shape faithfully along the extended surface 223A. A shape that does not damage the elastic film 22 along the extended surface 223A is also included.
- FIG. 8B shows a state in which the elastic film 22 is sucked by the ink outlet 24A when the restricting portion 232 is disposed at a position where the surface 232A is outside the ink outlet 24A than the extended surface 223A. Show. In this way, even when the elastic film 22 is sucked outside the extended surface 223A when sucked from the ink outlet 24A, the elastic film 22 has a shape substantially along the extended surface 223A. It is only necessary that the restricting portion 232 is disposed at a position where no damage is given.
- the restricting portion 232 may be disposed along a plane 223B where the surface 232A on the liquid chamber 24 side connects the peripheral portion of the ink outlet 24A.
- the elastic film 22 does not have a protruding shape at the ink outlet 24A, and the elastic film 22 can be prevented from being broken.
- the restricting portion 232 divides the ink outlet 24A into regions 234a, 234b, 234c, and 234d having sizes determined based on the tensile strength of the elastic film 22 and the maximum applied pressure of the recovery pump 120.
- FIG. 9 shows that the maximum applied pressure of the recovery pump 120 is ⁇ 100 kPa, and the hole diameter conditions of each region 234a, 234b, 234c and 234d are large (12.0 mm), medium (9.0 mm) and small (3.5 mm),
- the conditions of the tensile strength of the elastic film 22 are large (15.0 MPa), medium (7.6 MPa), and small (3.0 MPa), and combinations in which the elastic film 22 is not sucked into the ink outlet 24A in each combination are expressed as “ A ”, and“ B ”indicates a combination in which the elastic film 22 is sucked into the ink outlet 24A.
- the tensile strength of the elastic film is a value determined from the film properties.
- the tensile strength is a value measured using the test method JIS K 6251 with the thickness of the elastic film 22 being 2 mm.
- the elastic membrane 22 having a large tensile strength was sucked when the pore diameter was large, but was not sucked when it was medium or small. Further, the elastic film 22 having a medium tensile strength was sucked when the hole diameter was large and medium, but was not sucked when the hole diameter was small. Further, the elastic membrane 22 having a small tensile strength was sucked in the large, medium and small pore diameters.
- the elastic film 22 having all the tensile strength is sucked into the ink outlet 24A.
- the pore diameter was medium, the elastic film having a large tensile strength was not sucked, and the elastic film having a medium or small tensile strength was sucked. Further, when the pore diameter was small, the elastic film having high and medium tensile strength was not sucked, and the elastic film having low tensile strength was sucked.
- the elastic film 22 having a higher tensile strength is less likely to be sucked into the ink outlet 24A. Further, the elastic film 22 is less likely to be sucked when the hole diameter of each of the regions 234a, 234b, 234c, and 234d of the ink outlet 24A is smaller. However, if the hole diameter is too small, the pressure loss increases, and there is a possibility that ink circulation will not be established.
- the hole diameters of the regions 234a, 234b, 234c, and 234d are smaller than 0.7 mm, the pressure loss at the ink outlet 24A exceeds 100 kPa, and it is assumed that the ink circulation cannot be established. Therefore, the hole diameter is desirably 0.7 mm or more.
- each region of the ink outlet 24A is experimentally determined from the tensile strength of the elastic film 22 within a range in which the supply sub tank 18 can maintain an appropriate pressure buffering performance based on the pressure fluctuation of the recovery pump 120. can do.
- the hole diameter of each region 234a, 234b, 234c and 234d is 3.5 mm, and the tensile strength of the elastic film 22 is 7.6 MPa.
- the present invention is not limited to the mode of dividing into a plurality of regions, and the ink outlet 24A may be regulated as a single region by the regulating unit 250 as shown in FIG.
- the restricting portions 246 and 250 are formed integrally with the air chamber side tank frame 210 and disposed on the extended surface 223A of the inner wall surface 223 of the liquid chamber 24 at the ink outlet 24A.
- the restricting portion By configuring the restricting portion in this way, even when the operation of the recovery pump 120 becomes abnormal and a pressure abnormality occurs in the liquid chamber 24, the elastic film 22 is prevented from being sucked into the ink outlet 24A.
- the elastic film 22 sticks to the inner wall surface 223 of the accommodating portion 222 of the liquid chamber side tank frame 220, the elastic film 22 is easily peeled off from the inner wall surface 223.
- the ink outlet 24A has been described in detail, but the ink inlet 24B can be configured similarly. That is, the regulating portion 236 is formed integrally with the air chamber side tank frame 210, and the surface on the liquid chamber 24 side is an extended surface 223A of the inner wall surface 223 of the liquid chamber 24 at the ink inlet 24B (see FIG. 8A). ). You may arrange
- the restricting portion 236 serves as a stopper, and the elastic film 22 is not sucked into the ink inlet 24B. It is maintained inside the extended surface of the inner wall surface 223. As described above, the elastic film 22 does not have a protruding shape even at the ink inlet 24B.
- the area of the region divided by the restriction portions 232 and 236 may be different between the ink outlet 24A and the ink inlet 24B.
- the ink outlet 24A is preferably low in resistance (pressure loss) because it is sensitive to pressure fluctuations, and the ink inlet 24B has no problem even if the resistance is larger than that of the ink outlet 24A.
- each region 238a, 238b, 238c, and 238d of the ink inlet 24B has a minimum size that allows the ink to flow through the supply channel 12 by the pressure that the supply pump 20 applies to the ink in the supply channel 12. It is sufficient to make it an area.
- the ink inside the liquid chamber 24 becomes turbulent, so that the ink diffusion effect (thermal diffusion, deaeration) Degree of diffusion).
- the ink inlet 124B is more sensitive to pressure fluctuations and therefore preferably has a smaller resistance (pressure loss), and the ink outlet 124A has a higher resistance than the ink inlet 124B.
- the ink inflow port 124B is divided into a region of the maximum area where the elastic film 122 is not sucked when sucked by the supply pump 20 due to an abnormal pressure, and the ink pumping port 124A is divided by the recovery pump 120. It is sufficient to divide the area into areas of the minimum size that can circulate ink.
- dividing the ink outlet 24A and the ink inlet 24B into a plurality of regions has an effect that it becomes possible to trap foreign matters, bubbles, and the like even during normal ink circulation.
- An ink jet recording apparatus 300 (an example of an image recording apparatus) illustrated in FIG. 12 includes drums 310, 312, and 314, ink jet heads 320M, 320K, 320C, and 320Y, and ink supply apparatuses 322M, 322K, 322C, and 322Y.
- Each of the drums 310, 312 and 314 (an example of a moving unit) has a cylindrical shape that is rotatably supported.
- the drum 310 holds the sheet 302 as a single sheet recording medium supplied from a sheet feeding unit (not shown) on the outer peripheral surface, conveys it (an example of movement), and delivers it to the drum 312.
- the drum 312 receives the paper 302 from the drum 310, holds it on the outer peripheral surface, conveys it, and delivers it to the drum 314.
- the drum 314 receives the paper 302 from the drum 312, conveys the paper 302 while holding it on the outer peripheral surface, and delivers it to a paper discharge unit (not shown).
- the inkjet heads 320M, 320K, 320C, and 320Y eject four colors of ink of magenta (M), black (K), cyan (C), and yellow (Y), respectively, on the recording surface of the paper 302 conveyed by the drum 312. Then, an image is recorded on the recording surface of the paper 302.
- M magenta
- K black
- C cyan
- Y yellow
- the ink supply devices 322M, 322K, 322C, and 322Y supply the respective color inks to the inkjet heads 320M, 320K, 320C, and 320Y (an example of supply means), and were not used in the inkjet heads 320M, 320K, 320C, and 320Y.
- the ink is collected (an example of a collecting unit), and the ink is circulated.
- the ink supply device 100 can be applied to each of the ink supply devices 322M, 322K, 322C, and 322Y.
- the ink supply devices 322M, 322K, 322C, and 322Y each include an ink tank that stores ink of each color, a supply channel and a recovery channel that connect the inkjet heads 320M, 320K, 320C, and 320Y to the ink tank, respectively.
- a supply pump that applies pressure to the ink in the supply channel, a recovery pump that applies pressure to the ink in the recovery channel, and a supply provided between the inkjet heads 320M, 320K, 320C, and 320Y and the supply pump A sub-tank, a supply sub-tank having a liquid chamber communicating with the supply flow path via a flow port, an air chamber storing gas, and an elastic film separating the liquid chamber and the air chamber; and an inkjet head 320M , 320K, 320C and 320Y and a recovery sub-tank provided between the recovery pumps, A supply subtank and a recovery subtank, each including a liquid chamber communicating with the recovery flow path through a communication port, an air chamber storing gas, and an elastic membrane separating the liquid chamber and the air chamber.
- the distribution port is a restricting member disposed on an extension surface of the distribution port on the inner wall surface of the liquid chamber, and when the elastic film is sucked into the distribution port by the pressure applied to the ink by the supply pump and the recovery pump.
- a regulating member for maintaining the elastic film in a shape along the extended surface is provided.
- the ink jet recording apparatus 300 includes a system control unit 330, a pump control unit 340, a valve control unit 350, and a recording control unit 360.
- the system control unit 330 functions as a control unit that comprehensively controls each component of the inkjet recording apparatus 300.
- the system controller 330 receives measurement results of the pressure sensors 16 and 116 (see FIG. 1) of the ink supply devices 322M, 322K, 322C, and 322Y.
- the pump control unit 340 controls the supply pump 20 and the recovery pump 120 (see FIG. 1) of the ink supply devices 322M, 322K, 322C, and 322Y based on the control signal sent from the system control unit 330.
- the valve control unit 350 controls the opening and closing of valves such as the supply valve 14, the drain valve 30, the air connect valve 34, and the air valve 40 based on a control signal sent from the system control unit 330.
- the recording control unit 360 (an example of a recording control unit) controls the conveyance of the paper 302 by the drums 310, 312 and 314 and the inkjet heads 320M, 320K, 320C and 320Y based on a control signal sent from the system control unit 330. Perform image recording control.
- an image can be recorded on the recording surface of the paper 302.
- each ink is appropriately supplied to the inkjet heads 320M, 320K, 320C, and 320Y by the ink supply devices 322M, 322K, 322C, and 322Y.
- the elastic film 22 of the supply subtank 18 or the elastic film 122 of the recovery subtank 118 remains in the liquid chamber 24. Since the shape along the extended surface 223A of the wall surface 223 is maintained, the projection shape does not occur and the tear does not occur.
Abstract
Description
本実施形態に係るインク供給装置100は、インクタンク52に貯留されたインクをインクの供給対象であるインクジェットヘッド50へ供給し、かつ、インクジェットヘッド50において使用されないインクをインクタンク52へ回収し、インクジェットヘッド50の内部圧力(背圧)をインクの送液量によって制御する循環型の液体供給装置である。
次に、供給サブタンク18及び回収サブタンク118の構造について説明する。供給サブタンク18と回収サブタンク118とは、同様の構成を有しているため、ここでは代表して供給サブタンク18の構造を説明する。
図5に示す規制部が設けられていない液室側タンクフレーム221は、本実施形態の液室側タンクフレーム220に対して規制部232及び236が設けられていない点が異なる。
ここで、規制部232は、インク流出口24Aを弾性膜22の引張強さと回収ポンプ120の最大付与圧力とに基づいて決まる大きさの領域234a,234b,234c及び234dに分割している。
ここまで、インク流出口24Aを規制部232により4つの円形(孔)の領域234a,234b,234c及び234dに分割した例について説明したが、分割する領域は円形に限られない。圧力損失を考慮すると円形の領域に分割することが好ましいが、例えば図11(a)に示すように、規制部246により4つの矩形の領域248a,248b,248c及び248dに分割する態様も可能である。また、分割する領域の数も4つに限定されない。円形以外の形状の領域に分割する場合も、分割領域の大きさと弾性膜の引張強さとの関係を実験的に求めることによって、適切な領域の大きさに分割することができる。
ここまでは、インク流出口24Aについて詳細を説明したが、インク流入口24Bについても同様に構成することができる。即ち、規制部236は、気室側タンクフレーム210と一体に形成され、その液室24側の面がインク流入口24Bにおける液室24の内壁面223の延長面223A(図8(a)参照)に沿って配置されている。インク流入口24Bの周縁部を結ぶ平面223B(図8(b)参照)に沿って配置してもよい。したがって、供給ポンプ20の動作異常が発生し、液室24に異常圧力が発生しても、規制部236がストッパの役割を果たし、弾性膜22はインク流入口24Bに吸い込まれず、弾性膜22は内壁面223の延長面の内側に維持される。このように、インク流入口24Bにおいても、弾性膜22に突起形状が発生することがない。
次に、インク供給装置100を適用したインクジェット記録装置について説明する。図12に示すインクジェット記録装置300(画像記録装置の一例)は、ドラム310,312,314、インクジェットヘッド320M,320K,320C,320Y、インク供給装置322M,322K,322C,322Yとを含んで構成される。
図13に示すように、インクジェット記録装置300は、システム制御部330、ポンプ制御部340、バルブ制御部350及び記録制御部360を含んで構成される。
Claims (11)
- ノズルからインクを吐出するインクジェットヘッドとインクが貯留されるインクタンクとを連通するインク流路と、
前記インク流路に設けられ、該インク流路内のインクに圧力を付与するポンプと、
前記インクジェットヘッドと前記ポンプとの間に設けられた背圧タンクであって、流通口を介して前記インク流路と連通する液体室と、気体が貯留される気体室と、前記液体室と前記気体室とを隔離する弾性膜とを有する背圧タンクと、
前記液体室の内壁面の前記流通口における延長面に配置された規制部材であって、前記ポンプがインクに付与した圧力によって前記弾性膜が前記流通口に吸引された場合に、該弾性膜を前記延長面より内側に維持する規制部材と、
を備えた液体供給装置。 - 前記規制部材は、前記流通口を複数の領域に分割している請求項1に記載の液体供給装置。
- 前記規制部材は、前記弾性膜の引張強さと前記ポンプの最大付与圧力とに基づいて決まる大きさの複数の領域に分割している請求項2に記載の液体供給装置。
- 前記流通口は、前記インク流路を介して前記インクジェットヘッドと連通される第1の流通口と、前記インク流路を介して前記ポンプと連通される第2の流通口とを含む請求項3に記載の液体供給装置。
- 前記第1の流通口に配置される第1の規制部材は、前記ポンプがインクに付与した圧力によって前記弾性膜が前記第1の流通口に吸引された場合に、該弾性膜を前記延長面より内側に維持できる最大の大きさの複数の領域に前記第1の流通口を分割している請求項4に記載の液体供給装置。
- 前記第2の流通口に配置される第2の規制部材は、前記ポンプがインクに付与する圧力によって前記インク流路にインクを流通することができる最小の大きさの複数の領域に前記第2の流通口を分割している請求項4又は5に記載の液体供給装置。
- 前記規制部材は、前記流通口を複数の円形の領域に分割している請求項2から6のいずれか1項に記載の液体供給装置。
- 前記液体室は、排出流路を介して前記インクタンクと連通される排出口を含む請求項1から7のいずれか1項に記載の液体供給装置。
- 前記規制部材は、前記液体室と一体に形成されている請求項1から8のいずれか1項に記載の液体供給装置。
- インクが貯留されるインクタンクと、
ノズルからインクを吐出するインクジェットヘッドと、
請求項1から9のいずれか1項に記載の液体供給装置を用いた供給手段であって、前記インクタンクと前記インクジェットヘッドとの間に配置され、前記インクタンクに貯留されたインクを前記インクジェットヘッドに供給する供給手段と、
前記インクジェットヘッドと記録媒体とを相対的に移動させる移動手段と、
前記記録媒体を相対的に移動させながら前記インクジェットヘッドのノズルからインクを吐出させて前記記録媒体の記録面に画像を記録させる記録制御手段と、
を備えた画像記録装置。 - 請求項1から9のいずれか1項に記載の液体供給装置を用いた回収手段であって、前記インクジェットヘッドと前記インクタンクとの間に配置され、前記インクジェットヘッドに供給されたインクを前記インクタンクに回収する回収手段を備えた請求項10に記載の画像記録装置。
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0564897A (ja) * | 1991-09-09 | 1993-03-19 | Toppan Printing Co Ltd | インクジエツトプリンタのインク加圧機構 |
JP2008230137A (ja) * | 2007-03-22 | 2008-10-02 | Fujifilm Corp | 液体吐出ヘッドの背圧調整装置 |
JP2013180411A (ja) * | 2012-02-29 | 2013-09-12 | Fujifilm Corp | 液体吐出装置及び液体供給装置 |
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JP2004074462A (ja) | 2002-08-12 | 2004-03-11 | Sii Printek Inc | エアーダンパー及びインクジェットヘッド並びにインクジェット式記録装置 |
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JP5419940B2 (ja) | 2011-09-28 | 2014-02-19 | 富士フイルム株式会社 | 液体供給装置、液体吐出装置及び画像記録装置 |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0564897A (ja) * | 1991-09-09 | 1993-03-19 | Toppan Printing Co Ltd | インクジエツトプリンタのインク加圧機構 |
JP2008230137A (ja) * | 2007-03-22 | 2008-10-02 | Fujifilm Corp | 液体吐出ヘッドの背圧調整装置 |
JP2013180411A (ja) * | 2012-02-29 | 2013-09-12 | Fujifilm Corp | 液体吐出装置及び液体供給装置 |
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