EP0970350A1 - Impulse fluid jet apparatus with depriming protection - Google Patents
Impulse fluid jet apparatus with depriming protectionInfo
- Publication number
- EP0970350A1 EP0970350A1 EP98911836A EP98911836A EP0970350A1 EP 0970350 A1 EP0970350 A1 EP 0970350A1 EP 98911836 A EP98911836 A EP 98911836A EP 98911836 A EP98911836 A EP 98911836A EP 0970350 A1 EP0970350 A1 EP 0970350A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluid
- chamber
- compliant
- valve
- ink
- 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.)
- Granted
Links
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
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/055—Devices for absorbing or preventing back-pressure
-
- 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
-
- 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
Definitions
- This invention relates to a drop-on-demand or impulse fluid jets which eject a droplet of fluid such as ink in response to the energization of a transducer.
- Impulse fluid or ink jets are designed and driven so as to eject a droplet of fluid such as ink on demand from a chamber through an orifice in the chamber.
- impulse jets are utilized in many applications including industrial applications, it is important that the impulse ink jets operate reliably. Such reliability can be jeopardized where the impulse jets can be deprimed due to fluid disturbances in the supply of ink to and through the impulse jet. Such depriming can occur as a result of brief disturbances to the fluid supply as well large, longer disturbances caused by, for example, bumping the apparatus.
- an apparatus for preventing depriming of an impulse jet.
- an apparatus for preventing depriming of an impulse jet in response to small and/or brief disturbances in the ink or fluid supply line to the impulse ink jet or elsewhere.
- an apparatus is provided for preventing depriming of an impulse jet in response to large and/ or longer disturbances in fluid supply line or elsewhere.
- an impulse ink fluid apparatus comprises a transducer, and a fluid jet chamber coupled to the transducer, the chamber having an orifice through which droplets of fluid are ejected in response to the energization of the transducer.
- a fluid supply is coupled to the fluid jet chamber through a compliant chamber which forms at least part of a low pass filter substantially attenuating fluid disturbances having a duration substantially less than time constant of the low pass filter formed by the compliant chamber.
- the time constant represented by the product of the fluidic capacitance of the compliant chamber and at least a portion of the fluidic resistance of the fluid supply substantially attenuates pressure disturbances having a duration less than 0.01 the value of the time constant. In the preferred embodiment, disturbances of less than 0.01 and preferably less than 0.05 seconds will be attenuated.
- the compliant chamber comprises a compliant member for absorbing pressure waves.
- the compliant chamber comprises a flexible diaphragm which is nonplanar in the undisturbed state such that deformation is nonlinear with respect to changes in pressure.
- pressure waves are absorbed without pressure increases in the compliant chamber.
- the compliant chamber comprises an air passage allowing ambient air pressure to flow through and reach the compliant member.
- the compliant chamber may also include a filter permitting the flow of ink through the filter from the ink supply to the fluid jet chamber.
- the apparatus further comprises at least one check valve located between the fluid jet or a manifold serving a plurality of fluid jets and the compliant chamber for preventing the reverse flow of ink flow of ink from the ink jet chambers to the compliant chamber while permitting ink to flow from the compliant chamber to the ink jets.
- Each check valve includes passageways permitting the passage of air through the check valves.
- the check valve comprises a valve seat, a valve member, a valve support comprising at least one passage permitting fluid flow between the valve seat and the valve member and through the fluid passage toward the fluid chamber.
- the check valve includes a valve body forming the valve seat and containing the valve member and the valve support such that the fluid passage in the valve support is located adjacent to the valve body.
- the valve support comprises a plurality of passages located adjacent to the valve body.
- Fig. 1 is an impulse ink jet head incorporating the invention shown in cross- sectional form with the ink supply with the compliant chamber rotated 90° for purposes of clarity;
- Fig. 2 is a view of the impulse ink jet head taken along section line 2-2 of Fig. 1 ;
- Fig. 3 is a sectional view of the compliant chamber taken along line 3-3 of Fig. 2;
- Fig. 4 is a sectional view of the compliant chamber taken along line 4-4 of Fig. 3;
- Fig. 5 is an enlarged sectional view of the check valve and the ink jet chamber shown in Fig. 1;
- Fig. 6 is a sectional view taken along line 6-6 of Fig. 2 depicting the restrictor plate forming a portion of a plurality of ink jets in the head;
- Fig. 7 is a perspective view of a check valve support member shown in Fig. 5;
- Fig. 8 is an equivalent electrical circuit for the fluidic system shown in Figs. 1-7;
- Fig. 9 corresponds to Fig. 8 with the equivalent electrical circuit broken into sections A through C; and Fig. 10 is a classical first order low pass filter schematic.
- an impulse fluid or ink jet print head 10 comprises a chamber plate 12 and an orifice plate 14 forming a plurality of ink jet chambers 16 coupled to a transducer 18 through a foot 20 and a diaphragm 22 shown in enlarged form in Fig. 5.
- the transducer 18 is energized and de-energized by applying a voltage transverse to the longitudinal axis of the transducer 18 so as to operate the transducer in an expander mode, i.e. , the transducer expands and contracts along the longitudinal axis parallel to arrows 19 to cause volumetric changes in the chamber 16 to jet droplets from orifices 15 in the plate 14.
- fluid in the form of ink is supplied to each chamber 16 through restricted inlets 24 formed in a restrictor plate 26 between the chamber plate 12 and a spacer plate 27 which is sandwiched up against the diaphragm 22 best shown in Fig. 5.
- restricted inlets 24 are shown in Fig. 6 which depicts the restrictor plate 26 having enlarged openings 28 as explained in co-pending application Serial No. 08/823,718, filed March 25, 1997 which is incorporated herein by reference.
- the foregoing structure including the size of the chambers 16 in conjunction with the resonant frequency of the transducers 18 produce a high performance ink jet.
- each of the restricted inlets 24 is supplied by a manifold 30 shown in Figs. 1 and 5 as well as Fig. 2.
- the manifold 30 is supplied with fluid in the form of ink through two check valves 32 as shown in Figs. 1, 2 and 5.
- the check valves 32 are designed in a manner so as to prevent the reverse flow of ink from the chamber 24 back through the fluid supply lines in the print head 10.
- the check valves 32 comprise a diaphragm 34 which seats against a valve seat 36 in the print head 10 when the valve is closed as shown in dotted lines in Fig. 5.
- the diaphragm 34 when open permits the flow of ink into the chamber 16 as shown in Fig.
- FIG. 5 when seated against the end 38 of a check valve insert or support 40 as shown in full in Fig. 5.
- Details of the support 40 can be best appreciated by reference to Fig. 7 wherein flow channels 42 leading away from the end 38 and toward the manifold 30 are provided and a flange 44 through which the channels 42 pass is also provided for engaging a seat 46 in the print head in the valve body for the diaphragm 34 as best shown in Fig. 5.
- the check valves 32 are located in the print head at the end of supply channels 48.
- the supply channels 48 are terminated in a compliant chamber 49 shown in Figs. 1 and 2 and best shown in Figs. 3 and 4.
- the compliant chamber is provided to attenuate brief disturbances which might otherwise deprime the print head.
- the compliant chamber comprises a flexible membrane 50 which is capable of movement in the direction shown by the arrows 52 in an amount sufficient to absorb ink pressure disturbances in the supply line through the print head so as to prevent depriming of the head.
- the membrane 50 is held in place between a stainless steel member 54 and a filter assembly 56.
- the stainless steel member 54 is in turn held in place between the membrane 50 and another gasket 58.
- a vent hole 60 is provided in the print head juxtaposed to the membrane 50 so as to allow air to escape which is displaced by the membrane 50.
- the filter assembly 66 includes a filter 62. As will be appreciated with reference to Figs. 1-4, ink is free to flow into the compliant chamber 49 from an inlet 66 on the membrane side of the filter 62.
- the membrane displacement be non-linear with respect to changes in pressure.
- the membrane 50 is shown as concave with respect to the interior of the chamber 49 such that resistance to deformation increases concavity of the diaphragm. In other words, deformation of the diaphragm is non-linear with respect to changes in pressure within the compliant chamber.
- the inlet 66 of the print head is supplied with ink through a flexible tube 70 leading to a reservoir 72.
- the reservoir 72 as shown is including another filter 74 to assure that no agglomerations in the ink greater than the filler rating pass into the print head 10.
- the level of ink 76 in the reservoir 72 is maintained below the height of the ink jet chamber 14 so as to assure that no ink pressure at the chamber 16 thus avoiding weeping of ink from the orifices 15 in the orifice plate 14.
- the apparatus shown in Fig. 1 is depicted in equivalent electrical circuit form using capacitance, resistance and inductance and a pressure disturbance equivalent to a voltage pulse being simulated by a pulse generator.
- the equivalent circuit shown in Fig. 1 comprises a capacitance 80 and a resistance 82 corresponding to the capacitance and resistance of the orifice 15 in the orifice plate 14 respectively.
- a resistance 84 corresponds to the resistance of the restrictor 24.
- a capacitance 86 and a resistance 88 correspond to the fluidic capacitance and resistance of the manifold 30 including the feed lines 46.
- a capacitance 90 corresponds to the fluidic capacitance of the compliant chamber.
- a resistance 92 and a resistance 94 correspond to the fluidic resistance of the feed line 72 while an inductance 96 and an inductance 98 correspond to the fluidic inductance of that feed line 72.
- a capacitance 102 corresponds to the fluidic capacitance of the reservoir 72 and a voltage source 104 corresponds to the fluidic voltage or pressure generated by the reservoir 72. Any pressure disturbance in the feed line which is of a nature which could otherwise deprime the ink jet is depicted by a signal generator 106 located between the resistances 92 and 94 and the inductances 96 and 98 of the feed line.
- a first low pass filter is provided by sub-circuit 108 comprising the fluidic capacitance 80 and the fluidic resistances 82 and 84.
- a second sub-circuit 110 comprises fluidic capacitance 86 and fluidic resistance 88.
- a third sub-circuit 112 comprises fluidic capacitance 90 of the compliant chamber and fluidic resistance 92 which is part of the feed line 70 resistance.
- each of the sub-circuits 108, 110 and 112 effectively form a classic first order low pass filter where Vj(t) is an input voltage corresponding to the disturbance in the feed line and the v sacrifice(t) is the output voltage.
- Vj(t) is an input voltage corresponding to the disturbance in the feed line
- v cache(t) is the output voltage.
- the output voltage v 0 (t) corresponding to the output effect of the pressure disturbance represented by the V;(t) may be severely attenuated if the duration of the disturbance is less than the time constant T corresponding to the product RC.
- disturbances which are sufficiently brief in time will be severely attenuated by the low pass filter represented by the sub-circuit 112 corresponding to the low pass filter represented by the RC combination of the compliant chamber capacitance 90 and the line resistance 92. More specifically, disturbances having a duration shorter than 10% of T equal to the product of RC will be sufficiently attenuated so as not to have any material affect on the operation of the print head: i.e. , will not deprime the print head or cause weeping through the orifices.
- the flexible membrane is chosen so as to produce a time constant T of at least .1 second and preferably more than .5 seconds such that disturbances less than 1/10 or 10% of the time constant T will be substantially attenuated by the low pass filter formed by the compliant chamber in conjunction with the feed line resistance. More specifically, for a time constant of .1 seconds, the disturbance of less than .01 seconds or less than 1/10 or 10% of .1 seconds will have no effect on depriming or weeping. Similarly, for a time constant of at least .5 seconds, a disturbance of .05 seconds in duration will have little or no effect on depriming or weeping.
- the check valves 32 will only prevent depriming in gross overpressure situations where they are useful in preventing back flow of ink.
- very small pressure changes which would otherwise produce depriming will not have that effect where the compliant chamber is utilized to provide the low pass filter characteristic.
- the check valves do tend to pressurize the manifold section and prevent an unobjectionable massive deprime at the expense of some slightly objectionable orifice weeping.
- the compliant chamber may take on different shapes and sizes.
- the flexible membrane may take on a different shape although it is preferred that the membrane provide a non-linear change in deformation with respect to changes in pressure.
- fluids other than ink may be utilized where the fluidic jets are used, for example, as meters.
- ink jet configurations may be utilized where different types of transducers are used including the ink itself as in a bubble jet.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US82875897A | 1997-03-25 | 1997-03-25 | |
US828758 | 1997-03-25 | ||
PCT/US1998/005420 WO1998043050A1 (en) | 1997-03-25 | 1998-03-20 | Impulse fluid jet apparatus with depriming protection |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0970350A1 true EP0970350A1 (en) | 2000-01-12 |
EP0970350A4 EP0970350A4 (en) | 2001-03-07 |
EP0970350B1 EP0970350B1 (en) | 2005-06-08 |
Family
ID=25252666
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98911836A Expired - Lifetime EP0970350B1 (en) | 1997-03-25 | 1998-03-20 | Impulse fluid jet apparatus with depriming protection |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0970350B1 (en) |
JP (1) | JP2001519039A (en) |
AU (1) | AU741027B2 (en) |
CA (1) | CA2283666C (en) |
DE (1) | DE69830481T2 (en) |
ES (1) | ES2242998T3 (en) |
IL (1) | IL131910A0 (en) |
NO (1) | NO994644L (en) |
WO (1) | WO1998043050A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10967646B2 (en) | 2015-07-14 | 2021-04-06 | Hewlett-Packard Development Company, L.P. | Jettable material firing chamber check valve |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6209997B1 (en) * | 1997-03-25 | 2001-04-03 | Illinois Tool Works Inc. | Impulse fluid jet apparatus with depriming protection |
US6394589B1 (en) * | 1999-12-01 | 2002-05-28 | Hitachi Koki Co., Ltd. | Ink jet printhead with reduced crosstalk |
US20080129810A1 (en) * | 2006-12-01 | 2008-06-05 | Illinois Tool Works, Inc. | Compliant chamber with check valve and internal energy absorbing element for inkjet printhead |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2311383B1 (en) * | 1973-03-08 | 1974-09-05 | Olympia Werke Ag | Arrangement for reducing pressure increases and decreases in the writing fluid of an inkjet writing mechanism |
JPS57156262A (en) * | 1981-03-19 | 1982-09-27 | Sanyo Electric Co Ltd | Ink jet type recording device |
DE3209947C1 (en) * | 1982-03-18 | 1983-12-15 | Siemens AG, 1000 Berlin und 8000 München | Device for deaeration and for the damping of pressure fluctuations in an ink-writer head |
US4528578A (en) * | 1982-12-03 | 1985-07-09 | Ing. C. Olivetti & C., S.P.A. | Ink-jet printer damping |
US4575738A (en) * | 1984-07-20 | 1986-03-11 | Tektronix, Inc. | Ink jet printing apparatus having an ink pressure transient suppressor system |
JPH01257058A (en) * | 1988-04-07 | 1989-10-13 | Seiko Epson Corp | Ink jet head |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5574885A (en) * | 1978-11-30 | 1980-06-05 | Sharp Corp | Liquid feeder |
US4514742A (en) * | 1980-06-16 | 1985-04-30 | Nippon Electric Co., Ltd. | Printer head for an ink-on-demand type ink-jet printer |
US4347524A (en) * | 1980-08-07 | 1982-08-31 | Hewlett-Packard Company | Apparatus for absorbing shocks to the ink supply of an ink jet printer |
JPS58131071A (en) * | 1982-01-25 | 1983-08-04 | Konishiroku Photo Ind Co Ltd | Ink jet recorder |
US5650811A (en) * | 1993-05-21 | 1997-07-22 | Hewlett-Packard Company | Apparatus for providing ink to a printhead |
-
1998
- 1998-03-20 JP JP54580798A patent/JP2001519039A/en not_active Ceased
- 1998-03-20 AU AU65700/98A patent/AU741027B2/en not_active Ceased
- 1998-03-20 DE DE69830481T patent/DE69830481T2/en not_active Expired - Lifetime
- 1998-03-20 EP EP98911836A patent/EP0970350B1/en not_active Expired - Lifetime
- 1998-03-20 WO PCT/US1998/005420 patent/WO1998043050A1/en active IP Right Grant
- 1998-03-20 CA CA002283666A patent/CA2283666C/en not_active Expired - Fee Related
- 1998-03-20 IL IL13191098A patent/IL131910A0/en unknown
- 1998-03-20 ES ES98911836T patent/ES2242998T3/en not_active Expired - Lifetime
-
1999
- 1999-09-24 NO NO994644A patent/NO994644L/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2311383B1 (en) * | 1973-03-08 | 1974-09-05 | Olympia Werke Ag | Arrangement for reducing pressure increases and decreases in the writing fluid of an inkjet writing mechanism |
JPS57156262A (en) * | 1981-03-19 | 1982-09-27 | Sanyo Electric Co Ltd | Ink jet type recording device |
DE3209947C1 (en) * | 1982-03-18 | 1983-12-15 | Siemens AG, 1000 Berlin und 8000 München | Device for deaeration and for the damping of pressure fluctuations in an ink-writer head |
US4528578A (en) * | 1982-12-03 | 1985-07-09 | Ing. C. Olivetti & C., S.P.A. | Ink-jet printer damping |
US4575738A (en) * | 1984-07-20 | 1986-03-11 | Tektronix, Inc. | Ink jet printing apparatus having an ink pressure transient suppressor system |
JPH01257058A (en) * | 1988-04-07 | 1989-10-13 | Seiko Epson Corp | Ink jet head |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 006, no. 263 (M-181), 22 December 1982 (1982-12-22) & JP 57 156262 A (SANYO DENKI KK), 27 September 1982 (1982-09-27) * |
PATENT ABSTRACTS OF JAPAN vol. 014, no. 010 (M-917), 10 January 1990 (1990-01-10) & JP 01 257058 A (SEIKO EPSON CORP), 13 October 1989 (1989-10-13) * |
See also references of WO9843050A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10967646B2 (en) | 2015-07-14 | 2021-04-06 | Hewlett-Packard Development Company, L.P. | Jettable material firing chamber check valve |
Also Published As
Publication number | Publication date |
---|---|
NO994644D0 (en) | 1999-09-24 |
EP0970350B1 (en) | 2005-06-08 |
ES2242998T3 (en) | 2005-11-16 |
DE69830481T2 (en) | 2005-11-03 |
CA2283666C (en) | 2006-08-15 |
AU741027B2 (en) | 2001-11-22 |
DE69830481D1 (en) | 2005-07-14 |
NO994644L (en) | 1999-09-24 |
WO1998043050A1 (en) | 1998-10-01 |
JP2001519039A (en) | 2001-10-16 |
CA2283666A1 (en) | 1998-10-01 |
AU6570098A (en) | 1998-10-20 |
IL131910A0 (en) | 2001-03-19 |
EP0970350A4 (en) | 2001-03-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4183031A (en) | Ink supply system | |
EP1028852B1 (en) | Impulse fluid jet apparatus with depriming protection | |
US4575738A (en) | Ink jet printing apparatus having an ink pressure transient suppressor system | |
JP4111566B2 (en) | Side loading pressure adjustable free ink jet pen | |
US20080043076A1 (en) | Vacuum Pump and Low Pressure Valve Inkjet Ink Supply | |
EP0506232A1 (en) | Valve assembly for ink jet printer | |
EP1926601B1 (en) | Pressure damping ink filter | |
EP0604127A1 (en) | Double compartment ink-jet cartridge with optimum snout | |
JPS6058862A (en) | Print head for inkjet printer | |
CA2283666C (en) | Impulse fluid jet apparatus with depriming protection | |
JP6028513B2 (en) | Droplet discharge head, image forming apparatus, and method of manufacturing droplet discharge head | |
JPS61169254A (en) | Drop on-demand type ink jet head | |
EP0679516B1 (en) | Manual priming pump for ink jet printing mechanisms | |
KR101205595B1 (en) | Printhead with matched resonant damping structure | |
US8210664B2 (en) | Printhead with matched resonant damping structure | |
JP4285453B2 (en) | Liquid jet head | |
JPS6382752A (en) | Ink jet printing head | |
JPS625855A (en) | Ink jet recorder | |
JP2019143675A (en) | Valve unit, liquid injection head, liquid injection device and manufacturing method of valve unit | |
JPS61233545A (en) | Drop-on-demand type ink jet head | |
US20080129810A1 (en) | Compliant chamber with check valve and internal energy absorbing element for inkjet printhead | |
JP2006315360A (en) | Inkjet head | |
JPH04288240A (en) | Tank for storing liquid, ink jet head cartridge and ink jet apparatus | |
JPH04288238A (en) | Tank for storing liquid, ink jet head cartridge and ink jet apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19991006 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE ES FI FR GB IE IT LI NL SE |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 20010119 |
|
AK | Designated contracting states |
Kind code of ref document: A4 Designated state(s): CH DE ES FI FR GB IE IT LI NL SE |
|
RIC1 | Information provided on ipc code assigned before grant |
Free format text: 7B 41J 2/055 A, 7B 41J 2/045 B |
|
17Q | First examination report despatched |
Effective date: 20030409 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ILLINOIS TOOL WORKS INC. |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): CH DE ES FI FR GB IE IT LI NL SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20050608 Ref country code: LI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20050608 Ref country code: CH Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20050608 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REF | Corresponds to: |
Ref document number: 69830481 Country of ref document: DE Date of ref document: 20050714 Kind code of ref document: P |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2242998 Country of ref document: ES Kind code of ref document: T3 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060320 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20060309 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FI Payment date: 20100330 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20100329 Year of fee payment: 13 |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: EUG |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110320 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110321 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 18 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 19 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20170327 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20170327 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20170324 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20170329 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20170328 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 69830481 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: PE20 Expiry date: 20180319 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20180319 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20201202 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20180321 |