CN109153265B - Ink delivery system for supplying ink to a plurality of printheads at a constant pressure - Google Patents
Ink delivery system for supplying ink to a plurality of printheads at a constant pressure Download PDFInfo
- Publication number
- CN109153265B CN109153265B CN201780027028.6A CN201780027028A CN109153265B CN 109153265 B CN109153265 B CN 109153265B CN 201780027028 A CN201780027028 A CN 201780027028A CN 109153265 B CN109153265 B CN 109153265B
- Authority
- CN
- China
- Prior art keywords
- ink
- pressure
- positive
- negative
- line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
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
Landscapes
- Ink Jet (AREA)
Abstract
An ink delivery system for an inkjet printer, comprising: a positive ink line having a controlled positive ink pressure; a negative ink line having a controlled negative ink pressure; one or more print modules interconnected between the positive ink line and the negative ink line via respective inlet and outlet lines. Each print module includes: a print head; a control valve positioned at an inlet port of the print module for controlling ink pressure in the print head; an ink pressure sensor for sensing ink pressure in the print module; and a controller for receiving feedback from the pressure sensor and controlling the control valve. During printing, the ink pressure sensor, controller and control valve cooperate to control the back pressure in the printhead to be within a predetermined back pressure range.
Description
Technical Field
The present invention relates to ink delivery systems for inkjet printers. It has been developed primarily for supplying ink to a plurality of printheads at a relatively constant pressure.
Background
By using
Technical inkjet printers are commercially available in a number of different printing formats, including small office home office ("SOHO") printers, label printers, and wide format printers.
Printers typically include one or more fixed inkjet printheads that are user replaceable. For example, SOHO printers include a single user-replaceable multi-color printhead, high speed label printers include multiple user-replaceable monochromatic printheads aligned along a media feed direction, and wide format printers include multiple user-replaceable printheads in a staggered overlapping arrangement so as to span a wide format page width.
As the number of printheads increases, supplying ink to multiple printheads can be problematic. To maintain high print quality, each printhead should receive ink at about the same ink pressure from a common ink tank. A system for supplying ink to a plurality of inkjet printheads is described in US8,480,211, the contents of which are incorporated herein by reference. In prior art systems, a common reservoir incorporating a pressure control system (e.g., a float valve regulator) supplies ink to multiple printheads via an ink supply line. When the print head is not printing, the return ink line can perform various priming, discharging (de-priming), and purging operations. However, a problem with the ink delivery system described in US8,480,211 is that not all printheads necessarily receive the same ink pressure. The printhead furthest from the reservoir is affected by the pressure drop across the printhead closer to the reservoir. Thus, there is a tendency for printheads to experience different ink pressures, particularly when printing in full bleed or when different printheads in a system have different ink requirements.
It is desirable to provide an ink delivery system that supplies ink to multiple printheads at a reliable and highly controlled hydrostatic ink pressure. It is also desirable to provide a scalable ink delivery system that can be adapted to supply ink to a plurality of printheads, the number of printheads being variable from printing system to printing system.
Summary of The Invention
In a first aspect, there is provided an ink delivery system for an inkjet printer, the ink delivery system comprising:
a positive ink line having a controlled positive ink pressure;
a negative ink line having a controlled negative ink pressure;
one or more print modules interconnected between the positive ink line and the negative ink line via respective inlet and outlet lines, each print module comprising:
an inlet port connected to an inlet line;
an outlet port connected to an outlet line;
a printhead interconnected between the inlet port and the outlet port;
a control valve positioned at the inlet port for controlling ink pressure in the printhead;
an ink pressure sensor for sensing ink pressure in the print module; and
a controller for receiving feedback from the pressure sensor and controlling the control valve;
wherein the ink pressure sensor, controller and control valve cooperate to control the back pressure in the printhead to be within a predetermined back pressure range during printing.
The present invention advantageously provides local pressure control for each printhead in the system. In this way, increasing the number of printheads does not affect the degree of pressure control in the system. In addition, the present invention interconnects the printhead between positive ("high") and negative ("low") pressure ink lines. This enables excellent local control of pressure using a relatively low tolerance valve on the high pressure side of the printhead; all valve adjustments are dynamically adjusted by feedback from the ink pressure sensor. In addition, the use of a positive pressure line provides a head with sufficient pressure for multiple printheads without being affected by a pressure drop across any of the printheads in the system during printing. These and other advantages will be apparent from the detailed description below.
Preferably, each print module comprises: a supply module having an inlet port and an outlet port; and a print head.
Preferably, the printhead is contained in a replaceable printhead cartridge releasably connected to the supply module. Also, each print module may be a replaceable unit that can be easily separated from the inlet and outlet lines via suitable couplings at the inlet and outlet ports.
Preferably, the supply module comprises:
an inlet module comprising an inlet port, a control valve, and a pressure sensor; and
an outlet module comprising an outlet port.
Typically, the supply module also includes suitable drive and logic circuitry for controlling the operation of the printhead. For example, the supply module may include a print engine controller chip for controlling the respective printheads received by the supply module.
Preferably, the inlet module further comprises an air inlet and a corresponding air valve for introducing air into the printhead. The air inlet and air valve can discharge ink to the printhead, such as when a printhead cartridge replacement is required. Operation of the air inlet and air valve for controlling printhead discharge is described, for example, in US8,845,083, the contents of US8,845,083 being incorporated herein by reference.
Preferably, the outlet module comprises a shut-off valve. The outlet module may also include a restrictor (e.g., an orifice) that provides backpressure in the printhead along with the negative ink line. In some embodiments, a flow restrictor may be incorporated into the shut-off valve.
The outlet module may also include a compliance mechanism (e.g., an air chamber or a flexible wall chamber), for example, for dampening ink pressure fluctuations.
Preferably, the ink delivery system further comprises an ink reservoir connected to the positive ink line and the negative ink line such that ink is circulated from the ink reservoir to each printhead via the positive ink line and then back to the ink reservoir via the negative ink line.
Preferably, the ink delivery system further comprises an ink delivery module having a positive line coupler connected to the positive ink line, a negative line coupler connected to the negative ink line and a supply coupler for connection to the integral ink supply tank, wherein ink delivered to the supply coupler is received by the ink reservoir and distributed to the positive and negative line couplers via respective positive and negative pressure regulation systems.
The positive and negative pressure regulation systems advantageously enable overall control of pressure at the printhead by setting predetermined ink pressures in the positive and negative ink lines, while using control valves to achieve fine local pressure control. Thus, each control valve is not required to operate at high tolerances, and, furthermore, any hysteresis in the control valves and pressure sensors does not significantly affect printhead backpressure.
Preferably, the positive pressure regulation system and the negative pressure regulation system comprise respective regulation pumps.
Preferably, the ink delivery module further comprises one or more components selected from the group consisting of:
a positive pressure sensor for sensing a positive ink pressure in the positive pressure regulation system;
a negative pressure sensor for sensing a negative ink pressure in the negative pressure regulation system;
a positive pressure regulator;
a negative pressure regulator;
a compliant mechanism for dampening pressure fluctuations;
an ink filter;
an ink temperature sensor;
a vent;
an ink level sensor for sensing an ink level in the ink reservoir;
a refill pump positioned between the supply coupling and the ink reservoir; and
an ink deaerator.
Preferably, the ink delivery system further comprises an integral ink supply tank connected to the supply coupling. The ink delivery module is typically a self-contained unit that is connectable to an integral ink supply, a positive ink line, and a negative ink line. In this manner, the printing module and ink delivery module may be provided as a kit, enabling users to build a printing system that suits their individual needs.
In one embodiment, the positive ink pressure in the positive ink line is controlled by a positive pressure circuit including an ink reservoir, and the negative ink pressure in the negative ink line is controlled by a negative pressure circuit including an ink reservoir, wherein the positive ink line is connected to the positive pressure circuit and the negative ink line is connected to the negative pressure circuit.
Preferably, the ink delivery system includes a plurality of printheads (e.g., 2 to 50 printheads), wherein the positive ink line is a common positive ink line for each printhead and the negative ink line is a common negative ink line for each printhead.
In a second aspect, there is provided a method of controlling back pressure in one or more printheads, the method comprising the steps of:
supplying ink to each printhead via a positive ink line having a controlled positive ink pressure;
drawing ink from each printhead via a negative ink line having a controlled negative ink pressure; and
the back pressure in each print head is controlled by locally controlling the flow of ink at the positive pressure side of each print head.
Preferably, the back pressure is controlled via a control valve integrated in the print module for each respective printhead.
Preferably, the control valve is controlled by a controller, which receives feedback from an ink pressure sensor in the print module.
Preferably, ink is supplied to the positive ink line from the ink reservoir via a positive pressure loop, and ink is drawn back to the ink reservoir from each printhead via a negative pressure loop.
In a third aspect, there is provided a kit comprising:
(A) an ink delivery module, the ink delivery module comprising:
a supply coupler for connecting to an integral ink supply;
an ink reservoir for receiving ink from the supply coupler;
a positive line coupler for connecting to a positive ink line;
a negative line coupler for connecting to a negative ink line;
a positive pressure regulation system for regulating ink pressure between the ink reservoir and the positive line coupler; and
a negative pressure regulation system for regulating ink pressure between the ink reservoir and the negative line coupler; and
(B) one or more print modules, each print module comprising:
an inlet port;
an outlet port;
a printhead interconnected between an inlet port and an outlet port;
a control valve positioned at the inlet port for controlling ink pressure in the printhead;
an ink pressure sensor for sensing ink pressure in the print module; and
a controller for receiving feedback from the pressure sensor and controlling the control valve.
Brief Description of Drawings
Embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which:
FIG. 1 schematically illustrates an ink supply system according to the present invention;
FIG. 2 schematically illustrates an ink delivery module for connecting to a positive ink line and a negative ink line;
FIG. 3 schematically illustrates a print module interconnected between a positive ink line and a negative ink line; and
FIG. 4 is a perspective view of a print module.
Detailed description of the invention
Referring to FIG. 1, an ink delivery system 1 is schematically illustrated, the ink delivery system 1 including a positive ink line 3 ("positive rail") and a negative ink line 5 ("negative rail") connected to an ink delivery module 7, the ink delivery module 7 regulating the ink pressure in each of the positive and negative ink lines. A plurality of print modules 9 are interconnected between the positive ink line 3 and the negative ink line 5 via respective inlet lines 10 and outlet lines 12. Although three print modules 9 are shown in fig. 1, it should be understood that any number of print modules may be interconnected between the positive ink line 3 and the negative ink line 5. The print modules 9 may be physically positioned in a staggered overlapping arrangement so as to extend across a wider print zone medium than a single print module. In this manner, a plurality of print modules 9 may be employed for printing onto print media having a width greater than about 8 inches (e.g., at least 16 inches, at least 32 inches, or at least 40 inches).
Referring now to fig. 3 and 4, a single print module 9 includes a supply module 14 and a printhead cartridge 16 releasably connected to the supply module. The printhead cartridge 16 includes an inkjet printhead 17 for printing onto a print medium, and may be a color or monochrome printhead (e.g., a two-color or four-color printhead) as is known in the art. FOR example, the PRINTHEAD may be of the type described in applicant's co-filed application entitled "MONOCHROME INKJET PRINTHEAD CONFIRED FOR HIGH-SPEED PRINTING" (attorney docket No. RRG001US), the contents of which are incorporated herein by reference. For clarity, an ink delivery system for one color of ink is described herein, but it should be understood that multiple ink delivery systems may be used for the supply of multiple colors of ink.
The supply module 14 includes a body 20 that houses drive and logic circuitry for the printhead 17 (e.g., one or more PCBs with print engine controller chips, drive transistors, etc.), as well as an inlet module 22 and an outlet module 24. The inlet module 22 has an inlet port 26 connected to the inlet line 10 and the outlet module 24 has an outlet port 28 connected to the outlet line 12. Suitable print module couplers 29 allow the entire print module to be easily replaced when needed.
The inlet module 22 contains all the necessary components for providing local control of the ink pressure in the print head 17 for the individual print modules 9. Thus, each print module 9 provides local independent control of the ink pressure in its respective printhead 17 so that the local ink pressure can be fine tuned automatically and in response to local pressure fluctuations.
The inlet module 22 contains a control valve 33, the control valve 33 dynamically adjusting the ink pressure in response to feedback from an ink pressure sensor 35, the ink pressure sensor 35 sensing the ink pressure downstream of the control valve. The ink pressure sensor 35 provides feedback to a controller 37 (e.g., a microprocessor), which controller 37 in turn controls the variable position of the control valve 33 to regulate the ink pressure in the printhead 17 within a predetermined range of back pressures. Notably, by connecting between the positive ink line 3 and the negative ink line 5 (which already provides overall control of the ink pressure), the control valve 33 allows fine control of the ink pressure with minimal hysteresis. Thus, a relatively large adjustment of the control valve 33 produces only a relatively small change in ink pressure in the print module 9.
In addition, the inlet module 22 includes an air inlet 40 for introducing air into the printhead and a corresponding air valve 42, which air valve 42 may shut off the flow of air into the printhead. The air valve 42 is typically a solenoid valve that may be controlled by the controller 37. For most operations, the air valve 42 is closed. However, when it is desired to discharge ink to the printhead 16 (e.g., for replacement of the printhead cartridge 17), the air valve 42 is opened, with the control valve 33 fully closed, to draw air into the printhead 16 and remove the ink.
The outlet module 24 comprises a shut-off valve 44 for isolating the printing module 9 when required in combination with the control valve 33. The shut-off valve 44 incorporates a restrictor in the form of an orifice that restricts ink flow and, in combination with the negative ink line 5, controls the back pressure in the printhead 17.
In the embodiment shown in fig. 3, both the inlet and outlet modules 22, 24 each include a compliant mechanism 45 (e.g., an air plenum or flexible wall chamber) 45 proximate the respective inlet and outlet ports 26, 28 for dampening ink pressure fluctuations or "spikes".
Returning to fig. 1, the ink delivery module 7 includes an intermediate ink reservoir 50, which intermediate ink reservoir 50 is connected to the positive ink line 3 via a positive pressure regulation system in the form of a positive pressure loop 52. Likewise, the intermediate ink reservoir 50 is connected to the negative pressure ink line via a negative pressure regulation system in the form of a negative pressure circuit 54. The intermediate ink reservoir is vented to atmosphere via, for example, a serpentine vent path (not shown). The positive pressure circuit 52 regulates the positive ink pressure in the positive ink line 3, and the negative pressure circuit 54 regulates the negative ink pressure in the negative ink line 5. During printing, ink circulates from the intermediate ink reservoir 50 into the positive ink line 3, through each print module 8, and back to the intermediate ink reservoir via the negative ink line 5.
The intermediate ink reservoir 50 is replenished with ink from an integral ink supply tank 56 via a refill pump 58 in the ink delivery module 7. Intermediate ink reservoir 50 has a suitable ink sensor (not shown) for detecting a low ink level and providing feedback for actuating refill pump 58 when desired.
The ink delivery module 7 is typically a self-contained unit with various external couplings: a supply coupling 61 for connecting the refill pump 58 to the integral ink supply tank 56; an overflow coupling 63 for connecting the refill pump to an overflow tank (now shown); a positive line coupler 65 for connecting the positive ink line 3 to the positive pressure circuit 52; and a negative line coupler 67 for connecting the negative ink line 5 to the negative pressure circuit 54.
Turning now to FIG. 2, the internal components of the ink delivery module 7 are shown in greater detail. In particular, the positive pressure loop 52 includes a positive loop pump 70, which positive loop pump 70 pumps ink from the intermediate ink reservoir 50 toward a positive pressure regulator 72. The ink between the positive circuit pump 70 and the positive pressure regulator 72 is maintained at a regulated positive pressure, and the positive ink line 3 is tapped from this regulating portion 75 of the positive pressure circuit 52 via the positive line coupler 65. Downstream of the positive pressure regulator 72, the ink is at an unregulated pressure and is returned to the intermediate ink reservoir 50 in the direction indicated by arrow P in fig. 2.
Similarly, negative pressure circuit 54 includes a negative circuit pump 80, which negative circuit pump 80 pumps ink from intermediate ink reservoir 50 and into a pump inlet of the negative circuit pump through a negative pressure regulator 82. The ink between the negative pressure regulator 82 and the negative circuit pump 80 is maintained at a regulated negative pressure, and the negative ink line 5 is tapped from this regulating portion 85 of the negative pressure circuit 54 via the negative line coupler 67. Downstream of the negative loop pump 80, the ink is at an unregulated pressure and is returned to the intermediate ink reservoir 50 in the direction indicated by arrow N in fig. 2.
In each of positive pressure loop 52 and negative pressure loop 54, a pressure sensor 91 provides feedback to the respective positive pressure regulator 72 and negative pressure regulator 82. Thus, the conditioning sections 75 and 85 of each circuit are maintained at optimal positive and negative pressures, respectively. Each of positive pressure circuit 52 and negative pressure circuit 54 also includes a filter for filtering particles from the ink and a compliant mechanism for dampening ink pressure fluctuations. The ink delivery module 7 may also include a deaerator, as is known in the art, for removing air bubbles from the ink prior to delivery to the print module 9.
Of course, it should be understood that the ink delivery module 7 may include alternative positive and negative pressure regulation systems. For example, positive pressure circuit 52 and negative pressure circuit 54 may not be present, and ink delivery module 7 may provide inline regulation of ink pressure between intermediate ink reservoir 50 and positive line coupler 65 and negative line coupler 67.
During printing, ink at a regulated positive pressure is supplied to the positive ink line 3. Each print module 9 draws ink from the positive ink line 3 and the ink is fed back to the ink delivery module 7 via the negative ink line 5 under a regulated negative pressure. By maintaining control of the relative positive and negative pressures in the positive and negative ink lines 3, 5, a relatively constant back pressure is provided at each print module 9. Additional local control of the back pressure in each print head 17 is provided by a control valve 33 in the input module 22 of each print module 9. Using feedback from the ink pressure sensor 35, the control valve 33 is adjustable to maintain an optimum back pressure. When the pressure is too high, the control valve 33 is slightly closed; when the pressure is too low, the control valve 33 opens slightly.
Thus, the present invention provides excellent control of the print head back pressure in the plurality of print heads 17, the plurality of print heads 17 being supplied with ink from a common ink reservoir. The combination of global pressure regulation via the ink delivery module 7 and local pressure regulation via the control valve 33 in each print module 9 ensures that each printhead 17 has sufficient ink pressure for different ink requirements, and further ensures that each printhead in the system is maintained at a relatively constant back pressure. Further, ink delivery system 1 is scalable for use with any number of print modules 9 (e.g., from 1 to 50 print modules).
It will of course be understood that the present invention has been described by way of example only and that modifications of detail can be made within the scope of the invention, which is defined in the appended claims.
Claims (15)
1. An ink delivery system for an inkjet printer, comprising:
a positive ink line having a controlled positive ink pressure;
a negative ink line having a controlled negative ink pressure;
a plurality of print modules interconnected between the positive ink line and the negative ink line via respective inlet and outlet lines, each print module comprising:
an inlet port connected to the inlet line;
an outlet port connected to the outlet line;
a printhead interconnected between the inlet port and the outlet port;
a control valve positioned at the inlet port for controlling ink pressure in the printhead;
an ink pressure sensor for sensing ink pressure in the print module; and
a controller for receiving feedback from the pressure sensor and controlling the control valve;
wherein the ink pressure sensor, the controller and the control valve cooperate to control the back pressure in the printhead to be within a predetermined back pressure range during printing.
2. The ink delivery system of claim 1, wherein each print module comprises:
a supply module having the inlet port and the outlet port; and
the print head.
3. The ink delivery system of claim 2, wherein the printhead is contained in a replaceable printhead cartridge releasably connected to the supply module.
4. The ink delivery system of claim 2, wherein the supply module comprises:
an inlet module comprising the inlet port, the control valve, and the pressure sensor; and
an outlet module comprising the outlet port.
5. The ink delivery system of claim 4, wherein the inlet module further comprises an air inlet and a corresponding air valve for introducing air into the printhead.
6. The ink delivery system of claim 4, wherein the outlet module further comprises a shut-off valve and/or a restrictor.
7. The ink delivery system of claim 1, further comprising an ink reservoir connected to the positive ink line and the negative ink line such that ink circulates from the ink reservoir to each printhead via the positive ink line and then returns to the ink reservoir via the negative ink line.
8. The ink delivery system of claim 7, further comprising an ink delivery module having a positive line coupler connected to the positive ink line, a negative line coupler connected to the negative ink line, and a supply coupler for connection to an integral ink supply tank, wherein ink delivered to the supply coupler is received by the ink reservoir and distributed to the positive and negative line couplers via respective positive and negative pressure regulation systems.
9. An ink delivery system according to claim 8, wherein the positive and negative pressure regulation systems comprise respective regulation pumps.
10. The ink delivery system of claim 9, wherein the ink delivery module further comprises one or more components selected from the group consisting of:
a positive pressure sensor for sensing a positive ink pressure in the positive pressure regulation system;
a negative pressure sensor for sensing a negative ink pressure in the negative pressure regulation system;
a positive pressure regulator;
a negative pressure regulator;
a compliance mechanism for dampening pressure fluctuations;
an ink filter;
an ink temperature sensor;
a vent;
an ink level sensor for sensing an ink level in the ink reservoir;
a refill pump positioned between the supply coupling and the ink reservoir; and
an ink deaerator.
11. The ink delivery system of claim 8, further comprising the unitary ink supply tank connected to the supply coupler.
12. The ink delivery system of claim 1, comprising a plurality of printheads, wherein the positive ink line is a common positive ink line for each printhead and the negative ink line is a common negative ink line for each printhead.
13. A method of controlling backpressure in one or more printheads, the method comprising the steps of:
supplying ink to each printhead via a positive ink line having a controlled positive ink pressure;
drawing ink from each printhead via a negative ink line having a controlled negative ink pressure; and
locally controlling the back pressure in each print head by locally controlling the flow of ink at the positive pressure side of each print head;
wherein the back pressure is controlled via a control valve integrated in the print module for each respective printhead.
14. The method of claim 13, wherein the control valve is controlled by a controller that receives feedback from an ink pressure sensor in the print module.
15. A kit, comprising:
(A) an ink delivery module, the ink delivery module comprising:
a supply coupler for connecting to an integral ink supply;
an ink reservoir for receiving ink from the supply coupler;
a positive line coupler for connecting to a positive ink line;
a negative wire coupler for connecting to a negative ink wire;
a positive pressure regulation system for regulating ink pressure between the ink reservoir and the positive line coupler; and
a negative pressure regulation system for regulating ink pressure between the ink reservoir and the negative wire coupling; and
(B) a plurality of print modules, each print module comprising:
an inlet port;
an outlet port;
a printhead interconnected between the inlet port and the outlet port;
a control valve positioned at the inlet port for controlling ink pressure in the printhead;
an ink pressure sensor for sensing ink pressure in the print module; and
a controller for receiving feedback from the pressure sensor and controlling the control valve.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201662330785P | 2016-05-02 | 2016-05-02 | |
| US62/330,785 | 2016-05-02 | ||
| PCT/EP2017/058893 WO2017190934A1 (en) | 2016-05-02 | 2017-04-12 | Ink delivery system for supplying ink to multiple printheads at constant pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109153265A CN109153265A (en) | 2019-01-04 |
| CN109153265B true CN109153265B (en) | 2020-08-21 |
Family
ID=58645014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780027028.6A Active CN109153265B (en) | 2016-05-02 | 2017-04-12 | Ink delivery system for supplying ink to a plurality of printheads at a constant pressure |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP3452292B1 (en) |
| JP (1) | JP2019514732A (en) |
| CN (1) | CN109153265B (en) |
| AU (1) | AU2017259594B2 (en) |
| SG (1) | SG11201807298VA (en) |
| WO (1) | WO2017190934A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102191837B1 (en) * | 2019-01-08 | 2020-12-17 | 주식회사 고산테크 | Pressure controller for ink-jet printer |
| ES2964037T3 (en) * | 2020-03-13 | 2024-04-03 | United Barcode Systems S L | System for regulating the supply of the ink injectors of a print head and printing equipment that includes it |
| WO2022066171A1 (en) * | 2020-09-25 | 2022-03-31 | Hewlett-Packard Development Company, L.P. | Print agent delivery systems |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5880748A (en) * | 1994-09-20 | 1999-03-09 | Hewlett-Packard Company | Ink delivery system for an inkjet pen having an automatic pressure regulation system |
| US6428156B1 (en) * | 1999-11-02 | 2002-08-06 | Hewlett-Packard Company | Ink delivery system and method for controlling fluid pressure therein |
| US7467858B2 (en) * | 2005-10-12 | 2008-12-23 | Hewlett-Packard Development Company, L.P. | Back pressure control in inkjet printing |
| US7556365B2 (en) * | 2006-03-22 | 2009-07-07 | Hewlett-Packard Development Company, L.P. | Inkjet printing system with compliant printhead assembly |
| JP4971942B2 (en) * | 2007-10-19 | 2012-07-11 | 富士フイルム株式会社 | Inkjet recording apparatus and recording method |
| JP5121767B2 (en) * | 2009-03-27 | 2013-01-16 | 富士フイルム株式会社 | Droplet discharge device |
| US8388094B2 (en) | 2009-07-31 | 2013-03-05 | Zamtec Ltd | Wide format printer with input roller and movable media engagement output |
| JP2011068033A (en) * | 2009-09-25 | 2011-04-07 | Fujifilm Corp | Method for checking valve operation of liquid supply device, liquid supply device, and ink jet recorder |
| JP5404498B2 (en) * | 2010-03-30 | 2014-01-29 | 理想科学工業株式会社 | Printing device |
| CN201712257U (en) * | 2010-05-07 | 2011-01-19 | 童舟 | Stepless automatic circulating ink supply device of digital spraying printer |
| US20110279615A1 (en) * | 2010-05-17 | 2011-11-17 | Silverbrook Research Pty Ltd | Drive belt tensioning apparatus for printer |
| CN103153625B (en) * | 2010-10-19 | 2016-05-25 | 惠普发展公司，有限责任合伙企业 | Double governor printing module |
| JP5577388B2 (en) * | 2012-08-30 | 2014-08-20 | 富士フイルム株式会社 | Droplet discharge device and maintenance method thereof |
| JP6139099B2 (en) * | 2012-10-30 | 2017-05-31 | エスアイアイ・プリンテック株式会社 | Liquid ejecting unit, method of using liquid ejecting unit, and liquid ejecting apparatus |
| CN103895357B (en) * | 2012-12-25 | 2016-04-27 | 研能科技股份有限公司 | Ink feeding system |
| CN203157378U (en) * | 2013-03-06 | 2013-08-28 | 佛山市三水盈捷精密机械有限公司 | Ink supply system of ink jet printer |
| JP6435149B2 (en) * | 2014-09-29 | 2018-12-05 | 理想科学工業株式会社 | Inkjet printing device |
-
2017
- 2017-04-12 CN CN201780027028.6A patent/CN109153265B/en active Active
- 2017-04-12 JP JP2018555754A patent/JP2019514732A/en active Pending
- 2017-04-12 AU AU2017259594A patent/AU2017259594B2/en active Active
- 2017-04-12 SG SG11201807298VA patent/SG11201807298VA/en unknown
- 2017-04-12 WO PCT/EP2017/058893 patent/WO2017190934A1/en unknown
- 2017-04-12 EP EP17720382.5A patent/EP3452292B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| AU2017259594A1 (en) | 2018-10-25 |
| WO2017190934A1 (en) | 2017-11-09 |
| AU2017259594B2 (en) | 2019-05-09 |
| EP3452292B1 (en) | 2021-06-16 |
| SG11201807298VA (en) | 2018-11-29 |
| CN109153265A (en) | 2019-01-04 |
| EP3452292A1 (en) | 2019-03-13 |
| JP2019514732A (en) | 2019-06-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10744785B2 (en) | Print module for supplying ink to printhead at constant pressure | |
| US9272523B2 (en) | Printer configured for optimized printing | |
| CN109153265B (en) | Ink delivery system for supplying ink to a plurality of printheads at a constant pressure | |
| EP2313278B1 (en) | Inkjet printing device | |
| EP3180194B1 (en) | Printer fluid circulation system including an air isolation chamber and a printer fluid pressure control valve | |
| CN104428138A (en) | Printer configured for efficient air bubble removal | |
| JP2004148826A5 (en) | ||
| JP2017124616A5 (en) | ||
| CN108025556B (en) | Ink jet printing apparatus | |
| US11433685B2 (en) | Low-cost ink delivery system for controlling ink pressure | |
| GB2540111A (en) | Fluids delivery system | |
| KR102279172B1 (en) | Liquid discharge apparatus and liquid discharge head | |
| CN113492596B (en) | Device for printing with ink | |
| WO2015150148A1 (en) | Printer configured for optimized priming | |
| US11607886B2 (en) | Ink tank with integrated filter | |
| JP2022121051A (en) | inkjet printer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |