EP1508448B1 - Tintenstrahldüse mit angeschrägtem magnetischen Kolben - Google Patents

Tintenstrahldüse mit angeschrägtem magnetischen Kolben Download PDF

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Publication number
EP1508448B1
EP1508448B1 EP04024061A EP04024061A EP1508448B1 EP 1508448 B1 EP1508448 B1 EP 1508448B1 EP 04024061 A EP04024061 A EP 04024061A EP 04024061 A EP04024061 A EP 04024061A EP 1508448 B1 EP1508448 B1 EP 1508448B1
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EP
European Patent Office
Prior art keywords
ink
actuator
nozzle
ink jet
drop
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.)
Expired - Lifetime
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EP04024061A
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English (en)
French (fr)
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EP1508448A1 (de
Inventor
Kia Silverbrook
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Silverbrook Research Pty Ltd
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Silverbrook Research Pty Ltd
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Priority claimed from AUPO8071A external-priority patent/AUPO807197A0/en
Priority claimed from AUPO8070A external-priority patent/AUPO807097A0/en
Priority claimed from AUPO8055A external-priority patent/AUPO805597A0/en
Priority claimed from AUPO8075A external-priority patent/AUPO807597A0/en
Priority claimed from AUPO8036A external-priority patent/AUPO803697A0/en
Priority claimed from AUPO8058A external-priority patent/AUPO805897A0/en
Priority claimed from AUPO8072A external-priority patent/AUPO807297A0/en
Priority claimed from AUPO7936A external-priority patent/AUPO793697A0/en
Priority claimed from AUPO8047A external-priority patent/AUPO804797A0/en
Priority claimed from AUPO8067A external-priority patent/AUPO806797A0/en
Priority claimed from AUPO8004A external-priority patent/AUPO800497A0/en
Priority claimed from AUPO8056A external-priority patent/AUPO805697A0/en
Priority claimed from AUPO8077A external-priority patent/AUPO807797A0/en
Priority claimed from AUPO7933A external-priority patent/AUPO793397A0/en
Priority claimed from AUPO8054A external-priority patent/AUPO805497A0/en
Priority claimed from AUPO8069A external-priority patent/AUPO806997A0/en
Priority claimed from AUPO8053A external-priority patent/AUPO805397A0/en
Priority claimed from AUPO8035A external-priority patent/AUPO803597A0/en
Priority claimed from AUPO8001A external-priority patent/AUPO800197A0/en
Priority claimed from AUPO8063A external-priority patent/AUPO806397A0/en
Priority claimed from AUPO8065A external-priority patent/AUPO806597A0/en
Priority claimed from AUPO8066A external-priority patent/AUPO806697A0/en
Priority claimed from AUPO8060A external-priority patent/AUPO806097A0/en
Priority claimed from AUPO7935A external-priority patent/AUPO793597A0/en
Priority claimed from AUPO8073A external-priority patent/AUPO807397A0/en
Priority claimed from AUPO8061A external-priority patent/AUPO806197A0/en
Priority claimed from AUPO8076A external-priority patent/AUPO807697A0/en
Priority claimed from AUPO8059A external-priority patent/AUPO805997A0/en
Priority claimed from AUPO8049A external-priority patent/AUPO804997A0/en
Priority claimed from AUPO7950A external-priority patent/AUPO795097A0/en
Priority claimed from AUPO8044A external-priority patent/AUPO804497A0/en
Priority claimed from AUPO8041A external-priority patent/AUPO804197A0/en
Priority claimed from AUPO8048A external-priority patent/AUPO804897A0/en
Priority claimed from AUPO7949A external-priority patent/AUPO794997A0/en
Priority claimed from AUPP3983A external-priority patent/AUPP398398A0/en
Priority claimed from AUPP3982A external-priority patent/AUPP398298A0/en
Application filed by Silverbrook Research Pty Ltd filed Critical Silverbrook Research Pty Ltd
Publication of EP1508448A1 publication Critical patent/EP1508448A1/de
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/44Typewriters or selective printing mechanisms having dual functions or combined with, or coupled to, apparatus performing other functions
    • B41J3/445Printers integrated in other types of apparatus, e.g. printers integrated in cameras
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/14Structure thereof only for on-demand ink jet heads
    • B41J2/14314Structure of ink jet print heads with electrostatically actuated membrane
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/14Structure thereof only for on-demand ink jet heads
    • B41J2/14427Structure of ink jet print heads with thermal bend detached actuators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/16Production of nozzles
    • B41J2/1621Manufacturing processes
    • B41J2/1623Manufacturing processes bonding and adhesion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/16Production of nozzles
    • B41J2/1621Manufacturing processes
    • B41J2/1626Manufacturing processes etching
    • B41J2/1628Manufacturing processes etching dry etching
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/16Production of nozzles
    • B41J2/1621Manufacturing processes
    • B41J2/1626Manufacturing processes etching
    • B41J2/1629Manufacturing processes etching wet etching
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/16Production of nozzles
    • B41J2/1621Manufacturing processes
    • B41J2/1631Manufacturing processes photolithography
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/16Production of nozzles
    • B41J2/1621Manufacturing processes
    • B41J2/1632Manufacturing processes machining
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/16Production of nozzles
    • B41J2/1621Manufacturing processes
    • B41J2/1635Manufacturing processes dividing the wafer into individual chips
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/16Production of nozzles
    • B41J2/1621Manufacturing processes
    • B41J2/1637Manufacturing processes molding
    • B41J2/1639Manufacturing processes molding sacrificial molding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/16Production of nozzles
    • B41J2/1621Manufacturing processes
    • B41J2/164Manufacturing processes thin film formation
    • B41J2/1642Manufacturing processes thin film formation thin film formation by CVD [chemical vapor deposition]
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/16Production of nozzles
    • B41J2/1621Manufacturing processes
    • B41J2/164Manufacturing processes thin film formation
    • B41J2/1643Manufacturing processes thin film formation thin film formation by plating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/16Production of nozzles
    • B41J2/1621Manufacturing processes
    • B41J2/164Manufacturing processes thin film formation
    • B41J2/1645Manufacturing processes thin film formation thin film formation by spincoating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/16Production of nozzles
    • B41J2/1621Manufacturing processes
    • B41J2/164Manufacturing processes thin film formation
    • B41J2/1646Manufacturing processes thin film formation thin film formation by sputtering
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/16Production of nozzles
    • B41J2/1648Production of print heads with thermal bend detached actuators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/17Ink jet characterised by ink handling
    • B41J2/175Ink supply systems ; Circuit parts therefor
    • B41J2/17596Ink pumps, ink valves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/015Ink jet characterised by the jet generation process
    • B41J2/04Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2002/041Electromagnetic transducer

Definitions

  • the present invention relates to the field of ink jet printing systems.
  • US Patent 3596275 by Sweet also discloses a process of a continuous ink jet printing including the step wherein the ink jet stream is modulated by a high frequency electro-static field so as to cause drop separation. This technique is still utilized by several manufacturers including Elmjet and Scitex (see also US Patent No. 3373437 by Sweet et al)
  • Piezo-electric ink jet printers are also one form of commonly utilized ink jet printing device. Piezo-electric systems are disclosed by Kyser et. al. in US Patent No. 3946398 (1970) which utilises a diaphragm mode of operation, by Zolten in US Patent 3683212 (1970) which discloses a squeeze mode of operation of a piezo electric crystal, Stemme in US Patent No. 3747120 (1972) discloses a bend mode of piezo-electric operation, Howkins in US Patent No. 4459601 discloses a Piezo electric push mode actuation of the inkjet stream and Fischbeck in US 4584590 which discloses a sheer mode type of piezo-electric transducer element.
  • the ink jet printing techniques include those disclosed by Endo et al in GB 2007162 (1979) and Vaught et al in US Patent 4490728. Both the aforementioned references disclosed ink jet printing techniques rely upon the activation of an electrothermal actuator which results in the creation of a bubble in a constricted space, such as a nozzle, which thereby causes the ejection of ink from an aperture connected to the confined space onto a relevant print media.
  • Printing devices utilising the electro-thermal actuator are manufactured by manufacturers such as Canon and Hewlett Packard.
  • GB2262152 describes a solenoid valve for use in an inkjet printer. The valve comprises a chamber having a bore and plunger member for reciprocation in the bore. The plunger cooperates with a nozzle outlet so as to prevent or permit fluid escape from the chamber.
  • a printing technology should have a number of desirable attributes. These include inexpensive construction and operation, high speed operation, safe and continuous long term operation etc. Each technology may have its own advantages and disadvantages in the areas of cost, speed, quality, reliability, power usage, simplicity of construction operation, durability and consumables.
  • esoteric techniques are also often utilized. These can include electroforming of nickel stage (Hewlett-Packard Journal, Vol. 36 no 5, pp33-37 (1985)), electro-discharge machining, laser ablation (U.S. Patent No. 5,208,604), micro-punching, etc.
  • the preferred embodiments and other embodiments will be discussed under separate headings with the heading including an IJ number for ease of reference.
  • the headings also include a type designator with T indicating thermal, S indicating shutter type and F indicating a field type.
  • an ink jet nozzle which incorporates a plunger that is surrounded by an electromagnetic device.
  • the plunger is made from a magnetic material such that upon activation of the magnetic device, the plunger is forced towards a nozzle outlet port thereby resulting in the ejection of ink from the outlet port.
  • the plunger Upon deactivation of the electromagnet, the plunger returns to its rest position via the utilisation of a series of springs constructed to return the electromagnet to its rest position.
  • Fig. 227 illustrates a sectional view through a single ink jet nozzle 1310 as constructed with an embodiment.
  • the ink jet nozzle 1310 includes a nozzle chamber 1311 which is connected to a nozzle output port 1312 for the ejection of ink.
  • the ink is ejected by means of a tapered plunger device 1314 which is made of a soft magnetic material such as nickel-ferrous material (NIFE).
  • the plunger 1314 includes tapered end portions, e.g. 1316, in addition to interconnecting nitride springs, e.g. 1317.
  • An electromagnetic device is constructed around the plunger 1314 and includes outer soft magnetic material 1319 which surrounds a copper current carrying wire core 1320 with a first end of the copper coil 1320 connected to a first portion of a nickel- ferrous material and a second end of the copper coil is connected to a second portion of the nickel-ferrous material.
  • the circuit being further formed by means of vias (not shown) connecting the current carrying wire to lower layers which can take the structure of standard CMOS fabrication layers.
  • the tapered plunger portions 1316 Upon activation of the electromagnet, the tapered plunger portions 1316 attracted to the electromagnet.
  • the tapering allows for the forces to be resolved by means of downward movement of the overall plunger 1314, the downward movement thereby causing the ejection of ink from ink ejection port 1312. In due course, the plunger will move to a stable state having a top surface substantially flush with the electromagnet.
  • the plunger 1314 Upon turning the power off, the plunger 1314 will return to its original position as a result of energy stored within that nitride springs 1317.
  • the nozzle chamber 1311 is refilled by inlet holes 1322 from the ink reservoir 1323.
  • the bottom layer 1330 can be formed by back etching a silicon wafer which has a boron dope epitaxial layer as the etch stop.
  • the boron dope layer 1330 can be further individually masked and etched so as to form nozzle rim 1331 and the nozzle ejection port 1312.
  • a silicon layer 1332 is formed.
  • the silicon layer 1332 can be formed as part of the original wafer having the buried boron doped layer 1330.
  • the nozzle chamber proper can be formed substantially from high density low pressure plasma etching of the silicon layer 1332 so as to produce substantially vertical side walls thereby forming the nozzle chamber.
  • a glass layered 1333 which can include the drive and control circuitry required for driving an array of nozzles 1310.
  • the drive and control circuitry can comprise standard two level metal CMOS circuitry intra-connected to form the copper coil circuit by means of vias though upper layers (not shown).
  • a nitride passivation layer 1334 is provided so as to passivate any lower glass layers, e.g. 1333, from sacrificial etches should a sacrificial etching be utilized in the formation of portions of the nozzle.
  • nitride layer 1334 On top of the nitride layer 1334 is formed a first nickel-ferrous layer 1336 followed by a copper layer 1337 and a further nickel-ferrous layer 1338 which can be formed via a dual damascene process. On top of the layer 1338 is formed the final nitride spring layer 1340 with the springs being formed by means of semiconductor treatment of the nitride layer 1340 so as to release the springs in tension so as to thereby cause a slight rating of the plunger 1314. A number of techniques not disclosed in Fig. 228 can be utilized in the construction of various portions of the arrangement 1310.
  • the nozzle chamber can be formed by utilizing the aforementioned plasma etch and then subsequently filling the nozzle chamber with sacrificial material such as glass so as to provide a support for the plunger 1314 with the plunger 1314 being subsequently released via sacrificial etching of the sacrificial layers.
  • sacrificial material such as glass
  • the tapered end portions of the nickel-ferrous material can be formed so that the utilisation of a half-tone mask having an intensity pattern corresponding to the desired bottom tapered profile of plunger 1314.
  • the half-tone mask can be utilized to half-tone a resist so that the shape is transferred to the resist and subsequently to a lower layer, such as sacrificial glass on top of which is laid the nickel-ferrous material which can be finally planarised utilizing chemical mechanical planarization techniques.
  • the presently disclosed inkjet printing technology is potentially suited to a wide range of printing system including: colour and monochrome office printers, short run digital printers, high speed digital printers, offset press supplemental printers, low cost scanning printers high speed pagewidth printers, notebook computers with inbuilt pagewidth printers, portable colour and monochrome printers, colour and monochrome copiers, colour and monochrome facsimile machines, combined printer, facsimile and copying machines, label printers, large format plotters, photograph copiers, printers for digital photographic "minilabs", video printers, PhotoCD printers, portable printers for PDAs, wallpaper printers, indoor sign printers, billboard printers, fabric printers, camera printers and fault tolerant commercial printer arrays.
  • the embodiments of the invention use an ink jet printer type device. Of course many different devices could be used. However presently popular ink jet printing technologies are unlikely to be suitable.
  • thermal inkjet The most significant problem with thermal inkjet is power consumption. This is approximately 100 times that required for high speed, and stems from the energy-inefficient means of drop ejection. This involves the rapid boiling of water to produce a vapor bubble which expels the ink. Water has a very high heat capacity, and must be superheated in thermal inkjet applications. This leads to an efficiency of around 0.02%, from electricity input to drop momentum (and increased surface area) out.
  • piezoelectric inkjet The most significant problem with piezoelectric inkjet is size and cost. Piezoelectric crystals have a very small deflection at reasonable drive voltages, and therefore require a large area for each nozzle. Also, each piezoelectric actuator must be connected to its drive circuit on a separate substrate. This is not a significant problem at the current limit of around 300 nozzles per print head, but is a major impediment to the fabrication of pagewide print heads with 19,200 nozzles.
  • the inkjet technologies used meet the stringent requirements of in-camera digital color printing and other high quality, high speed, low cost printing applications.
  • new inkjet technologies have been created.
  • the target features include:
  • inkjet designs shown here are suitable for a wide range of digital printing systems, from battery powered one-time use digital cameras, through to desktop and network printers, and through to commercial printing systems
  • the print head is designed to be a monolithic 0.5 micron CMOS chip with MEMS post processing.
  • the print head is 100 mm long, with a width which depends upon the inkjet type.
  • the smallest print head designed is IJ38, which is 035 mm wide, giving a chip area of 35 square mm.
  • the print heads each contain 19,200 nozzles plus data and control circuitry.
  • Ink is supplied to the back of the print head by injection molded plastic ink channels.
  • the molding requires 50 micron features, which can be created using a lithographically micromachined insert in a standard injection molding tool.
  • Ink flows through holes etched through the wafer to the nozzle chambers fabricated on the front surface of the wafer.
  • the print head is connected to the camera circuitry by tape automated bonding.
  • Actuator mechanism (18 types) Basic operation mode (7 types) Auxiliary mechanism (8 types) Actuator amplification or modification method (17 types) Actuator motion (19 types) Nozzle refill method (4 types) Method of restricting back-flow through inlet (10 types) Nozzle clearing method (9 types) Nozzle plate construction (9 types) Drop ejection direction (5 types) Ink type (7 types)
  • inkjet configurations can readily be derived from these 45 examples by substituting alternative configurations along one or more of the 11 axes.
  • Most of the IJ01 to IJ45 examples can be made into inkjet print heads with characteristics superior to any currently available inkjet technology.
  • Suitable applications include: Home printers, Office network printers, Short nm digital printers, Commercial print systems, Fabric printers, Pocket printers, Internet WWW printers, Video printers, Medical imaging, Wide format printers, notebook PC printers, Fax machines, Industrial printing systems, Photocopiers, Photographic minilabs etc.
  • Actuator mechanism (applied only to selected ink drops)
  • Actuator Mechanism Description Advantages Disadvantages Examples Thermal bubble An electrothermal heater heats the ink to above boiling point, transferring significant heat to the aqueous ink. A bubble nucleates and quickly forms, expelling the ink. The efficiency of the process is low, with typically less than 0.05% of the electrical energy being transformed into kinetic energy of the drop.
  • Perovskite materials such as tin modified lead lanthanum zirconate titanate (PLZSnT) exhibit large strains of up to 1% associated with the AFE to FE phase transition.
  • Low power consumption ⁇ Difficult to integrate with electronics ⁇ IJ04 ⁇
  • Many ink types can be ⁇
  • Unusual materials such as PLZSnT are used required ⁇ Fast operation ( ⁇ 1 ⁇ s) ⁇
  • Actuators require a large area ⁇ Relatively high longitudinal strain ⁇ High efficiency ⁇ Electric field strength of around 3 V/ ⁇ m can be readily provided
  • Electrostatic plates Conductive plates are separated by a compressible or fluid dielectric (usually air). Upon application of a voltage, the plates attract each other and displace ink, causing drop ejection.
  • the conductive plates may be in a comb or honeycomb structure, or stacked to increase the surface area and therefore the force.
  • Low power consumption ⁇ Difficult to operate electrostatic devices in an aqueous environment ⁇ IJ02, IJ04 ⁇ Many ink types can be used ⁇ Fast operation ⁇ The electrostatic actuator will normally need to be separated from the ink ⁇ Very large area required to achieve high forces ⁇ High voltage drive transistors may be required ⁇ Full pagewidth print heads are not competitive due to actuator size Electrostatic pull on ink A strong electric field is applied to the ink, whereupon electrostatic attraction accelerates the ink towards the print medium.
  • Examples are: Samarium Cobalt (SaCo) and magnetic materials in the neodymium iron boron family (NdFeB, NdDyFeBNb, NdDyFeB, etc) ⁇ Low power consumption ⁇ Complex fabrication ⁇ IJ07, IJ10 ⁇ Many ink types can be used ⁇ Permanent magnetic material such as used Neodymium Iron Boron (NdFeB) required.
  • SaCo Samarium Cobalt
  • NdDyFeBNb neodymium iron boron family
  • NdDyFeB neodymium iron boron family
  • NdFeB Neodymium Iron Boron
  • Soft magnetic core electro-magnetic A solenoid induced a magnetic field in a soft magnetic core or yoke fabricated from a ferrous material such as electroplated iron alloys such as CoNiFe [1], CoFe, or NiFe alloys. Typically, the soft magnetic material is in two parts, which are normally the ink.
  • the actuator should be pre-stressed to approx. 8 MPa.
  • Many ink types can be used ⁇ Force acts as a twisting motion ⁇ Fischenbeck, USP 4,032,929 ⁇ Fast operation ⁇ Unusual materials such as Terfenol-D are required USP ⁇ Easy extension from single nozzles to pagewidth print heads ⁇ High local currents required ⁇ IJ25 ⁇ High force is available ⁇ Copper metalization should be used for long electromigration lifetime and low resistivity ⁇ Pre-stressing may be required Surface tension reduction Ink under positive pressure is held in a nozzle by surface tension. The surface tension of the ink is reduced below the bubble threshold, causing the ink to egress from the nozzle.
  • a heater fabricated from a conductive material is incorporated.
  • a 50 ⁇ m long PTFE bend actuator with polysilicon heater and 15 mW power Input can provide 180 ⁇ N force and 10 ⁇ m deflection.
  • Actuator motions include: ⁇ High force can be generated ⁇ Requires special material (e.g.
  • PTFE ⁇ IJ09, IJ17, IJ18, IJ20 ⁇ PTFE is a candidate for low dielectric constant insulation in ULSI ⁇ Requires a PTFE deposition process, which is not yet standard in ULSI fabs ⁇ IJ21, IJ22, IJ23, IJ24 ⁇ Very low power consumption ⁇ PTFE deposition cannot be followed with high temperature (above 350 °C) processing ⁇ IJ27, IJ28, IJ29, IJ30 ⁇ Many ink types can be used ⁇ Pigmented inks may be infeasible, as pigment particles may jam the bend ⁇ IJ31, IJ42, IJ43, IJ44 ⁇ Simple planar fabrication ⁇ Small chip area required for each actuator ⁇ Fast operation 1) Bend ⁇ High efficiency 2) Push ⁇ CMOS compatible voltages and currents 3) Buckle 4) Rotate ⁇ Easy extension from single nozzles to pagewidth print heads Conductive polymer thermoelastic actuator A polymer with a high
  • the conducting polymer expands when resistively heated.
  • conducting dopants include: ⁇ High force can be generated ⁇ Requires special materials development (High CTE conductive polymer) ⁇ IJ24 ⁇ Very low power consumption ⁇ Requires a PTFE deposition process, which is not yet standard in ULS1 fabs ⁇ Many ink types can be used ⁇ PTFE deposition cannot be followed with high temperature (above 350 °C) processing ⁇ Simple planar fabrication ⁇ Evaporation and CVD deposition techniques cannot be used ⁇ Small chip area required for each actuator ⁇ Pigmented inks may be infeasible, as pigment particles may jam the bend actuator 1) Carbon nanotubes ⁇ Fast operation 2) Metal fibers ⁇ CMOS compatible voltages and currents 3) Conductive polymers such as doped polythiophene ⁇ Easy extension from single nozzles to pagewidth print heads 4) Carbon granules Shape memory alloy A shape memory alloy such as TiNi (also known as Nitinol - Nickel Titanium
  • Linear Magnetic Actuator Linear magnetic actuator include the Linear Induction Actuator (LIA), Linear Permanent Magnet Synchronous Actuator (LPMSA), Linear Reluctence Synchronous Actuator (LRSA), Linear Switched Reluctance Actuator (LSRA), and the Linear Stepper
  • Linear Magnetic actuators can be constructed with high thrust, long travel, and high efficiency using planar semiconductor fabrication techniques ⁇ Requires unusual semiconductor materials such as soft magnetic alloys (e.g. CoNiFe [1]) ⁇ IJ12 ⁇ Long actuator travel is available ⁇ Some varieties also require permanent magnetic materials such as Neodymium iron boron (NdFeB) ⁇ Medium force is available ⁇ Requires complex multi-phase drive circuitry ⁇ Low voltage operation ⁇ High current operation
  • Actuator directly pushes ink This is the simplest mode of operation: the actuator directly supplies sufficient kinetic energy to expel the drop. The drop must have a sufficient velocity to overcome the surface tension. ⁇ Simple operation ⁇ Drop repetition rate is usually limited to less than 10 KHz.
  • Very simple print head fabrication can be used ⁇ Requires very high electrostatic field ⁇ Silverbrook, EP 0771 658 A2 and related patent applications ⁇
  • the drop selection means does not need to provide the energy required to separate the drop from the nozzle ⁇ Electrostatic field for small nozzle sizes is above air breakdown ⁇ Tone-Jet ⁇ Electrostatic field may attract dust Magnetic pull on ink
  • the drops to be printed are selected by some manner (e.g. thermally induced surface tension reduction of pressurized ink). Selected drops are separated from the ink in the nozzle by a strong magnetic field acting on the magnetic ink.
  • Actuators with small travel can be used ⁇ Moving parts are required ⁇ IJ08, IJ15, IJ18, IJ19 ⁇ Actuators with small force can be ⁇ Requires ink pressure modulator ⁇ High speed (>50 KHz) operation can be achieved ⁇ Friction and wear must be used considered ⁇ Stiction is possible Pulsed magnetic pull on ink pusher A pulsed magnetic field attracts an 'ink pusher' at the drop ejection frequency. An actuator controls a catch, which prevents the ink pusher from moving when a drop is not to be ejected. ⁇ Extremely low energy operation is possible ⁇ Requires an external pulsed magnetic field ⁇ IJ10 ⁇ No heat dissipation problems ⁇ Requires special materials for both the actuator and the ink pusher ⁇ Complex construction
  • the ink pressure oscillation may be achieved by vibrating the print head, or preferably by an actuator in the ink supply.
  • Oscillating ink pressure can provide a refill pulse, allowing higher operating speed
  • Requires external ink pressure oscillator ⁇ Silverbrook, EP 0771 658 A2 and related patent applications
  • the actuators may operate with much lower energy
  • Acoustic lenses can be used to focus the sound on the nozzles
  • Acoustic reflections in the ink chamber must be designed for ⁇ IJ18, IJ19, IJ21 Media proximity
  • the print head is placed in close proximity to the print medium.
  • the actuator directly drives the drop ejection process.
  • Operational simplicity ⁇ Many actuator mechanisms have insufficient travel, or insufficient force, to efficiently drive the drop ejection process ⁇
  • Thermal Bubble Inkjet ⁇ IJ01, IJ02, IJ06, IJ07 ⁇ IJ16, IJ25, IJ26
  • Differential expansion bend actuator An actuator material expands more on one side than on the other. The expansion may be thermal, piezoelectric, magnetostrictive, or other mechanism.
  • Provides greater travel in a reduced print head area ⁇ High stresses are involved ⁇ Piezoelectric ⁇
  • the bend actuator converts a high force low travel actuator mechanism to high travel, lower force mechanism.
  • Transient bend actuator A trilayer bend actuator where the two outside layers are identical. This cancels bend due to ambient temperature and residual stress. The actuator only responds to transient heating of one side or the other.
  • Actuator stack A series of thin actuators are stacked. This can be appropriate where actuators require high electric field strength, such as electrostatic and piezoelectric actuators. ⁇ Increased travel ⁇ Increased fabrication complexity ⁇ Some piezoelectric ink jets ⁇ Reduced drive voltage ⁇ Increased possibility of short circuits due to pinholes ⁇ IJ04 Multiple actuators Multiple smaller actuators are used simultaneously to move the ink. Each actuator need provide only a portion of the force required.
  • Actuator forces may not add linearly, reducing efficiency ⁇ IJ12, IJ13, IJ18, IJ20 ⁇
  • Multiple actuators can be positioned to control ink flow accurately ⁇ IJ22, IJ28, IJ42, IJ43 Linear Spring
  • a linear spring is used to transform a motion with small travel and high force into a longer travel, lower force motion.
  • Matches low travel actuator with higher travel requirements ⁇ Requires print head area for the spring ⁇ IJ15 ⁇
  • Non-contact method of motion transformation Reverse spring The actuator loads a spiring. When the actuator is turned off, the spring releases.
  • the actuator flexing is effectively converted from an even coiling to an angular bend, resulting in greater travel of the actuator tip.
  • Simple means of increasing travel of a bend actuator ⁇ Care must be taken not to exceed the elastic limit in the flexure area ⁇ IJ10, IJ19, IJ33 ⁇ Stress distribution is very uneven ⁇ Difficult to accurately model with finite element analysis Gears Gears can be used to increase travel at the expense of duration. Circular gears, rack and pinion, ratchets, and other gearing methods can be used.
  • Low force, low travel actuators can be used ⁇ Moving parts are required ⁇ IJ13 ⁇ Several actuator cycles are required ⁇ Can be fabricated using standard surface MEMS processes ⁇ More complex drive electronics ⁇ Complex construction ⁇ Friction, friction, and wear are possible Catch The actuator controls a small catch. The catch either enables or disables movement of an ink pusher that is controlled in a bulk manner ⁇ Very low actuator energy ⁇ Complex construction ⁇ IJ10 ⁇ Very small actuator size ⁇ Requires external force ⁇ Unsuitable for pigmented inks Buckle plate A buckle plate can be used to change a slow actuator into a fast motion. It can also convert a high force, low travel actuator into a high travel, medium force motion.
  • acoustic lens is used to concentrate sound waves.
  • No moving parts Large area required ⁇ 1993 Hadimioglu et al, EUP 550,192 ⁇ Only relevant for acoustic ink jets ⁇ 1993 Elrod et al, EUP 572,220 Sharp conductive point A sharp point is used to concentrate an electrostatic field.
  • Simple construction ⁇ Difficult to fabricate using standard VLSI processes for a surface ejecting ink-jet ⁇ Tone-jet ⁇ Only relevant for electrostatic ink jets
  • Actuator motion Description Advantages Disadvantages: Volume expansion
  • the volume of the actuator changes, pushing the ink in all directions.
  • ⁇ Simple construction in the case of thermal ink jet ⁇ High energy is typically required to achieve volume expansion. This leads to thermal stress, cavitation, and kogation in thermal ink jet implementations ⁇ Hewlett-Packard Thermal Inkjet ⁇ Canon Bubblejet Linear, normal to chip surface
  • the actuator moves in a direction normal.
  • the nozzle is ejected normal to the surface typically in the line of movement.
  • ⁇ Difficulty of integration in a VLSI process Rotary
  • the actuator causes the rotation of some ⁇ Rotary levers may be used to increase travel ⁇ Device complexity ⁇ IJ05, IJ08, IJ13, IJ28 element, such a grill or impeller ⁇ Small chip area requirements ⁇ May have friction at a pivot point Bend The actuator bends when energized. This may be due to differential thermal expansion, piezoelectric expansion, magnetostriction, or other form of relative dimensional change. ⁇ A very small change in dimensions can be converted to a large motion.
  • the actuator ⁇ Requires the actuator to be made from at least two distinct layers, or to have a thermal difference across the actuator ⁇ 1970 Kyser et al USP 3,946,398 Swivel The actuator swivels around a central pivot. This motion is suitable where there are opposite forces applied to opposite sides of the paddle, e.g. Lorenz force.
  • Can be used with shape memory alloys where the austenic phase is planar ⁇ Requires careful balance of stresses ⁇ IJ06 ⁇ IJ26, IJ32 to ensure that the quiescent bend is accurate Double bend
  • the actuator bends in one direction when one element is energized, and bends the other way when another element is energized.
  • One actuator can be used to power two nozzles.
  • IJ36, IJ37, IJ38 ⁇ Reduced chip size. ⁇ Not sensitive to ambient temperature ⁇ A small efficiency loss compared to equivalent single bend actuators. Shear Energizing the actuator causes a shear motion in the actuator material.
  • Nozzle refill method Description Advantages Disadvantages Examples Surface tension After the actuator is energized, it typically returns rapidly to its normal position. This rapid return sucks in air through the nozzle opening. The ink surface tension at the nozzle then exerts a small force restoring the meniscus to a minimum area.
  • Inlet filter is located between the ink inlet and the nozzle chamber.
  • the filter has a multitude of small holes or slots, restricting ink flow.
  • the filter also removes particles which may block the nozzle.
  • Nozzle Clearing method Description Advantages Disadvantages Examples Normal nozzle firing All of the nozzles are fired periodically, the before the ink has a chance to dry. When not in use the nozzles are sealed (capped) against air. The nozzle firing is usually performed during a special clearing cycle, after first moving the print head to a cleaning station.
  • a high nozzle clearing capability can be achieved ⁇
  • High implementation cost if system does not already include an acoustic actuator ⁇ IJ08, IJ13, IJ15, IJ17 ⁇ May be implemented at very low cost in systems which already include acoustic actuators ⁇ IJ18, IJ19, IJ21
  • Nozzle clearing plate A microfabricated plate is pushed against the nozzles. The plate has a post for every nozzle.
  • the blade is usually fabricated from a flexible polymer, e.g. rubber or synthetic elastomer.
  • ⁇ Effective for planar print head surfaces ⁇ Low cost ⁇ Difficult to use if print head surface is non-planar or very fragile ⁇ Many inkjet systems ⁇ Requires mechanical parts ⁇ Blade can wear out in high volume print systems Separate ink boiling heater A separate heater is provided at the nozzle although the normal drop e-ection mechanism does not require it. The heaters do not require individual drive circuits, as many nozzles can be cleared simultaneously, and no imaging is required.
  • ⁇ Can be effective where other nozzle clearing methods cannot be used ⁇ Fabrication complexity ⁇ Can be used with many U series ink jets ⁇ Can be implemented at no additional cost in some inkjet configurations
  • Nozzle plate construction Description Advantages Disadvantages Examples Electroformed nickel A nozzle plate is separately fabricated from electroformed nickel, and bonded to the print head chip. ⁇ Fabrication simplicity ⁇ High temperatures and pressures are required to bond nozzle plate ⁇ Hewlett Packard Thermal Inkjet ⁇ Minimum thickness constraints ⁇ Differential thermal expansion Laser ablated or drilled polymer Individual nozzle holes are ablated by an intense UV laser in a nozzle plate, which is typically a polymer such as polyimide or polysulphone ⁇ No masks required ⁇ Can be quite fast ⁇ Each hole must be individually formed ⁇ Canon Bubblejet ⁇ Some control over nozzle profile is possible ⁇ Special equipment required ⁇ 1988 Sercel et al., SPIE, Vol.
  • Nozzles may be clogged by adhesive Glass capillaries Fine glass capillaries are drawn from glass tubing. This method has been used for making individual nozzles, but is difficult to use for bulk manufacturing of print heads with thousands of nozzles. ⁇ No expensive equipment required ⁇ Very small nozzle sizes are difficult to form ⁇ 1970 Zoltan USP 3,683,212 ⁇ Simple to make single nozzles ⁇ Not suited for mass production Monolithic, surface micro-machined using VLSI lithographic processes The nozzle plate is deposited as a layer using standard VLSI deposition techniques.
  • Nozzles are etched in the nozzle plate using VLSI lithography and etching.
  • High accuracy ( ⁇ 1 ⁇ m) ⁇ Requires sacrificial layer under the nozzle plate to form the nozzle chamber ⁇ Silverbrook, EP 0771658 A2 and related patent applications ⁇ Monolithic ⁇ Low cost ⁇ Existing processes can be used ⁇
  • Surface may be fragile to the touch ⁇ IJ01, IJ02, IJ04, IJ11 ⁇ IJ12, IJ17, IJ18, IJ20 ⁇ IJ22, IJ24, IJ27, IJ28 ⁇ IJ29, IJ30, IJ31, U32 ⁇ IJ33, IJ34, IJ36, U37 ⁇ IJ38, U39, IJ40, IJ41 ⁇ IJ42, IJ43, IJ44 Monolithic, etched through substrate The nozzle plate is a buried etch stop in the wafer.
  • Nozzle chambers are etched in the front of the wafer, and the wafer is thinned from the back side. Nozzles are then etched in the etch stop layer.
  • High accuracy ( ⁇ 1 ⁇ m) ⁇ Requires long etch times ⁇ IJ03, IJ05, IJ06, ⁇ Monolithic ⁇ Requires a support wafer IJ07 ⁇ Low cost ⁇ IJ08, IJ09, IJ10, IJ13 ⁇ No differential expansion ⁇ IJ14, IJ15, IJ16, IJ19 ⁇ IJ21, IJ23, IJ25, IJ26 No nozzle plate Various methods have been tried to eliminate the nozzles entirety, to prevent nozzle clogging.
  • Aqueous, dye Water based ink which typically contains: water, dye, surfactant, humectant, and biocide.
  • Modern ink dyes have high water-fastness, light fastness ⁇ Environmentally friendly ⁇ Slow drying ⁇ Most existing inkjets ⁇ No odor ⁇ Corrosive ⁇ Bleeds on paper ⁇ All IJ series ink jets ⁇ May strikethrough ⁇ Silverbrook, EP 0771658 A2 and related patent applications ⁇ Cockles paper
  • Aqueous, pigment Water based ink which typically contains: water, pigment, surfactant, humectant, and biocide. Pigments have an advantage in reduced bleed, wicking and strikethrough.
  • ink jet printers A large number of new forms of ink jet printers have been developed to facilitate alternative ink jet technologies for the image processing and data distribution system. Various combinations of ink jet devices can be included in printer devices incorporated as part of the present invention.
  • the present application may utilize advanced semiconductor fabrication techniques in the construction of large arrays of ink jet printers.
  • the present application may utilize an ink delivery system to the ink jet head.
  • the present application may utilize advanced semiconductor microelectromechanical techniques in the construction of large arrays of ink jet printers.
  • the present application may include the utilization of a disposable camera system.
  • the present application may include the utilization of a data distribution system.
  • the present application may include the utilization of camera and data processing techniques such as an Arteam type device.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Ink Jet (AREA)

Claims (3)

  1. Tintenstrahl-Düsenanordnung (1310), umfassend:
    eine Düsenkammer (1311) mit einer Tintenausstoßöffnung (1312) zum Ausstoßen von Tinte aus der Düsenkammer;
    einen Tintenvorratsbehälter zum Zuführen von Tinte zu der Düsenkammer;
    einen Magnetkolben (1314), der zwischen der Düsenkammer (1311) und dem Tintenvorratsbehälter sitzt und von einer elektromagnetischen Vorrichtung (1319, 1320) umgeben ist, dadurch gekennzeichnet, dass der Magnetkolben bei Aktivierung der Vorrichtung zur Tintenausstoßöffnung hin bewegt wird, um den Ausstoß der Tinte aus der Ausstoßöffnung zu bewirken und, dass der Magnetkolben (1314) spitz zulaufend ist.
  2. Tintenstrahl-Düsenanordnung (1310) nach Anspruch 1, wobei der Kolben (1314) im Wesentlichen rund ist und einen spitz zulaufenden Rand an den der elektromagnetischen Vorrichtung (1319, 1320) angrenzenden Teilen hat.
  3. Tintenstrahl-Düsenanordnung (1310) nach einem der Ansprüche 1 oder 2, wobei die elektromagnetische Vorrichtung (1319, 1320) die Form eines Torus hat und der Kolben (1314) im Zentrum des Torus angeordnet ist.
EP04024061A 1997-07-15 1998-07-15 Tintenstrahldüse mit angeschrägtem magnetischen Kolben Expired - Lifetime EP1508448B1 (de)

Applications Claiming Priority (73)

Application Number Priority Date Filing Date Title
AUPO803597 1997-07-15
AUPO8036A AUPO803697A0 (en) 1997-07-15 1997-07-15 Image creation method and apparatus (IJ13)
AUPO793597 1997-07-15
AUPO8058A AUPO805897A0 (en) 1997-07-15 1997-07-15 A method of manufacture of an image creation apparatus (IJM26)
AUPO807397 1997-07-15
AUPO8072A AUPO807297A0 (en) 1997-07-15 1997-07-15 Image creation method and apparatus (IJ02)
AUPO807197 1997-07-15
AUPO8070A AUPO807097A0 (en) 1997-07-15 1997-07-15 Image creation method and apparatus (IJ15)
AUPO8047A AUPO804797A0 (en) 1997-07-15 1997-07-15 Image creation method and apparatus (IJ05)
AUPO805397 1997-07-15
AUPO8067A AUPO806797A0 (en) 1997-07-15 1997-07-15 Image creation method and apparatus (IJ16)
AUPO8004A AUPO800497A0 (en) 1997-07-15 1997-07-15 Image creation method and apparatus (IJ26)
AUPO8056A AUPO805697A0 (en) 1997-07-15 1997-07-15 Image creation method and apparatus (IJ10)
AUPO8065A AUPO806597A0 (en) 1997-07-15 1997-07-15 A method of manufacture of an image creation apparatus (IJM06)
AUPO7933A AUPO793397A0 (en) 1997-07-15 1997-07-15 A method of manufacture of an image creation_apparatus (IJM10)
AUPO804897 1997-07-15
AUPO804997 1997-07-15
AUPO807097 1997-07-15
AUPO807697 1997-07-15
AUPO8054A AUPO805497A0 (en) 1997-07-15 1997-07-15 A method of manufacture of an image creation apparatus (IJM05)
AUPO800197 1997-07-15
AUPO805697 1997-07-15
AUPO8069A AUPO806997A0 (en) 1997-07-15 1997-07-15 Image creation method and apparatus (IJ11)
AUPO8053A AUPO805397A0 (en) 1997-07-15 1997-07-15 A method of manufacture of an image creation apparatus (IJM08)
AUPO8035A AUPO803597A0 (en) 1997-07-15 1997-07-15 Image creation method and apparatus (IJ06)
AUPO8001A AUPO800197A0 (en) 1997-07-15 1997-07-15 Image creation method and apparatus (IJ17)
AUPO805997 1997-07-15
AUPO804197 1997-07-15
AUPO8063A AUPO806397A0 (en) 1997-07-15 1997-07-15 Image creation method and apparatus (IJ08)
AUPO806797 1997-07-15
AUPO807597 1997-07-15
AUPO806397 1997-07-15
AUPO8071A AUPO807197A0 (en) 1997-07-15 1997-07-15 Image creation method and apparatus (IJ04)
AUPO806197 1997-07-15
AUPO806597 1997-07-15
AUPO7936A AUPO793697A0 (en) 1997-07-15 1997-07-15 A method of manufacture of an image creation apparatus (IJM02)
AUPO794997 1997-07-15
AUPO806997 1997-07-15
AUPO8055A AUPO805597A0 (en) 1997-07-15 1997-07-15 A method of manufacture of an image creation apparatus (IJM07)
AUPO7935A AUPO793597A0 (en) 1997-07-15 1997-07-15 A method of manufacture of an image creation apparatus (IJM01)
AUPO8073A AUPO807397A0 (en) 1997-07-15 1997-07-15 A method of manufacture of an image creation apparatus (IJM15)
AUPO805497 1997-07-15
AUPO8061A AUPO806197A0 (en) 1997-07-15 1997-07-15 A method of manufacture of an image creation apparatus (IJM04)
AUPO804497 1997-07-15
AUPO800497 1997-07-15
AUPO805597 1997-07-15
AUPO803697 1997-07-15
AUPO8076A AUPO807697A0 (en) 1997-07-15 1997-07-15 A method of manufacture of an image creation apparatus (IJM16)
AUPO804797 1997-07-15
AUPO8059A AUPO805997A0 (en) 1997-07-15 1997-07-15 A method of manufacture of an image creation apparatus (IJM14)
AUPO8049A AUPO804997A0 (en) 1997-07-15 1997-07-15 Image creation method and apparatus (IJ12)
AUPO806097 1997-07-15
AUPO795097 1997-07-15
AUPO7950A AUPO795097A0 (en) 1997-07-15 1997-07-15 A method of manufacture of an image creation apparatus (IJM11)
AUPO8044A AUPO804497A0 (en) 1997-07-15 1997-07-15 Image creation method and apparatus (IJ07)
AUPO806697 1997-07-15
AUPO793697 1997-07-15
AUPO8041A AUPO804197A0 (en) 1997-07-15 1997-07-15 Image creation method and apparatus (IJ25)
AUPO8048A AUPO804897A0 (en) 1997-07-15 1997-07-15 Image creation method and apparatus (IJ14)
AUPO7949A AUPO794997A0 (en) 1997-07-15 1997-07-15 A method of manufacture of an image creation apparatus (IJM12)
AUPO807297 1997-07-15
AUPO793397 1997-07-15
AUPO805897 1997-07-15
AUPO807797 1997-07-15
AUPO8060A AUPO806097A0 (en) 1997-07-15 1997-07-15 A method of manufacture of an image creation apparatus (IJM13)
AUPO8066A AUPO806697A0 (en) 1997-07-15 1997-07-15 Image creation method and apparatus (IJ01)
AUPO8077A AUPO807797A0 (en) 1997-07-15 1997-07-15 A method of manufacture of an image creation apparatus (IJM25)
AUPO8075A AUPO807597A0 (en) 1997-07-15 1997-07-15 A method of manufacture of an image creation apparatus (IJM17)
AUPP398398 1998-06-09
AUPP398298 1998-06-09
AUPP3983A AUPP398398A0 (en) 1998-06-09 1998-06-09 Image creation method and apparatus (ij45)
AUPP3982A AUPP398298A0 (en) 1998-06-09 1998-06-09 A method of manufacture of an image creation apparatus (ijm45)
EP98933350A EP0999933B1 (de) 1997-07-15 1998-07-15 Magnetfeld-betätigte tintenstrahldüse

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EP04024061A Expired - Lifetime EP1508448B1 (de) 1997-07-15 1998-07-15 Tintenstrahldüse mit angeschrägtem magnetischen Kolben
EP98933350A Expired - Lifetime EP0999933B1 (de) 1997-07-15 1998-07-15 Magnetfeld-betätigte tintenstrahldüse
EP04024066A Expired - Lifetime EP1508446B1 (de) 1997-07-15 1998-07-15 Tintenstrahldüse mit elektromagnetischem Betätigungselement
EP04024059A Expired - Lifetime EP1512535B1 (de) 1997-07-15 1998-07-15 Tintenstrahldrucker mit magnetisch angetriebenem Kolben
EP04024058A Expired - Lifetime EP1508444B1 (de) 1997-07-15 1998-07-15 Tintenstrahldrucker mit elektrostatisch betätigten Platten
EP04024063A Expired - Lifetime EP1510340B1 (de) 1997-07-15 1998-07-15 Tintenstrahldüse mit geschlitztem Kolben
EP04024064A Expired - Lifetime EP1508445B1 (de) 1997-07-15 1998-07-15 Tintenstrahldüse mit Lorentz-Kraft-Element
EP04024062A Expired - Lifetime EP1508449B1 (de) 1997-07-15 1998-07-15 Tintenstrahldüse mit magnetischer Antriebskammer
EP04024060A Expired - Lifetime EP1510339B1 (de) 1997-07-15 1998-07-15 Durch magnetische Impulse betriebene Tintenstrahldüse
EP04024065A Expired - Lifetime EP1510341B1 (de) 1997-07-15 1998-07-15 Tintenstrahldüse mit elektromagnetischem Verschluss
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EP04024066A Expired - Lifetime EP1508446B1 (de) 1997-07-15 1998-07-15 Tintenstrahldüse mit elektromagnetischem Betätigungselement
EP04024059A Expired - Lifetime EP1512535B1 (de) 1997-07-15 1998-07-15 Tintenstrahldrucker mit magnetisch angetriebenem Kolben
EP04024058A Expired - Lifetime EP1508444B1 (de) 1997-07-15 1998-07-15 Tintenstrahldrucker mit elektrostatisch betätigten Platten
EP04024063A Expired - Lifetime EP1510340B1 (de) 1997-07-15 1998-07-15 Tintenstrahldüse mit geschlitztem Kolben
EP04024064A Expired - Lifetime EP1508445B1 (de) 1997-07-15 1998-07-15 Tintenstrahldüse mit Lorentz-Kraft-Element
EP04024062A Expired - Lifetime EP1508449B1 (de) 1997-07-15 1998-07-15 Tintenstrahldüse mit magnetischer Antriebskammer
EP04024060A Expired - Lifetime EP1510339B1 (de) 1997-07-15 1998-07-15 Durch magnetische Impulse betriebene Tintenstrahldüse
EP04024065A Expired - Lifetime EP1510341B1 (de) 1997-07-15 1998-07-15 Tintenstrahldüse mit elektromagnetischem Verschluss
EP04024057A Expired - Lifetime EP1508443B1 (de) 1997-07-15 1998-07-15 Tintenstrahldüse mit elektromagnetisch aktiviertem Tintenkolben

Country Status (4)

Country Link
EP (11) EP1508448B1 (de)
JP (6) JP4170582B2 (de)
AT (8) ATE353053T1 (de)
WO (1) WO1999003680A1 (de)

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Also Published As

Publication number Publication date
EP1510339B1 (de) 2007-01-24
EP1510341A2 (de) 2005-03-02
JP4171037B2 (ja) 2008-10-22
EP0999933B1 (de) 2005-03-02
EP0999933A4 (de) 2000-12-20
EP1508445A1 (de) 2005-02-23
WO1999003680A1 (en) 1999-01-28
EP1510339A3 (de) 2005-03-09
ATE352421T1 (de) 2007-02-15
JP2007062380A (ja) 2007-03-15
ATE381991T1 (de) 2008-01-15
EP1508443B1 (de) 2007-03-07
EP1510341A3 (de) 2005-03-16
EP1508444A3 (de) 2005-03-16
EP1512535B1 (de) 2007-12-26
EP1508449B1 (de) 2007-01-24
JP2001510107A (ja) 2001-07-31
EP1510340B1 (de) 2007-01-24
EP1510341B1 (de) 2007-01-24
EP1508445B1 (de) 2007-01-31
JP2007062383A (ja) 2007-03-15
JP4170582B2 (ja) 2008-10-22
EP1510340A3 (de) 2005-03-09
ATE352423T1 (de) 2007-02-15
EP1508443A2 (de) 2005-02-23
JP4185538B2 (ja) 2008-11-26
EP1508443A3 (de) 2005-03-16
ATE352422T1 (de) 2007-02-15
EP1508446A1 (de) 2005-02-23
ATE352420T1 (de) 2007-02-15
EP1508444A2 (de) 2005-02-23
EP1508448A1 (de) 2005-02-23
JP4173174B2 (ja) 2008-10-29
JP4137964B2 (ja) 2008-08-20
ATE355972T1 (de) 2007-03-15
ATE289922T1 (de) 2005-03-15
JP2007062379A (ja) 2007-03-15
EP1508449A1 (de) 2005-02-23
ATE353053T1 (de) 2007-02-15
EP1512535A1 (de) 2005-03-09
EP1508444B1 (de) 2007-11-21
EP1510340A2 (de) 2005-03-02
JP2007062381A (ja) 2007-03-15
JP2007062382A (ja) 2007-03-15
JP4137965B2 (ja) 2008-08-20
EP1508446B1 (de) 2007-01-10
EP0999933A1 (de) 2000-05-17
EP1510339A2 (de) 2005-03-02

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