EP0359365A1 - Modifizierter Tintenstrahldruckkopf und Verfahren zur Produktion von tintenstrahlgedruckten Bildern - Google Patents

Modifizierter Tintenstrahldruckkopf und Verfahren zur Produktion von tintenstrahlgedruckten Bildern Download PDF

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Publication number
EP0359365A1
EP0359365A1 EP89306750A EP89306750A EP0359365A1 EP 0359365 A1 EP0359365 A1 EP 0359365A1 EP 89306750 A EP89306750 A EP 89306750A EP 89306750 A EP89306750 A EP 89306750A EP 0359365 A1 EP0359365 A1 EP 0359365A1
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EP
European Patent Office
Prior art keywords
ink
ink jet
printing head
phase change
jet printing
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.)
Withdrawn
Application number
EP89306750A
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English (en)
French (fr)
Inventor
Jeffrey J. Anderson
Ted E. Deur
Curtis F. Sheley
John S. Moore
Donald R. Titterington
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tektronix Inc
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Tektronix Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tektronix Inc filed Critical Tektronix Inc
Publication of EP0359365A1 publication Critical patent/EP0359365A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/16—Production of nozzles
    • B41J2/1606—Coating the nozzle area or the ink chamber

Definitions

  • This invention relates to a modified ink jet printing head and to a method for effectively and efficiently producing printed images from an ink composition on a printing medium.
  • Ink jet printers having one or more ink jet printheads with one or more ink jetting nozzles in each printhead for projecting drops of ink onto paper or other printing substrates to generate graphic images and text have become increasingly popular.
  • ink jet printers with multiple ink jetting nozzles are used, with each nozzle being supplied with ink of a different color.
  • These colored inks are then applied, either alone or in combination, to the printing medium to make a finished color print.
  • all of the colors needed to make the print are produced from combinations of cyan, magenta and yellow inks. Black ink may also be added to the above ink combination for printing textual material or for producing true four-color prints.
  • the print medium is attached to a rotating drum or is advanced in a typewriter-like mechanism past the printheads with the ink jet heads being mounted on a traveling carriage that traverses the drum axially or, on the typewriter-­like mechanism, in a boustrophedon manner.
  • the heads scan a helical or boustrophedan path over the printing medium, ink drops are projected from a minute external nozzle in each head toward the printing medium so as to form an image on the printing medium.
  • a suitable control system synchronizes the generation of ink drops with the rotating drum or typewriter-like mechanism.
  • U.S. 4,623,906 describes a three-layer coating for glass or silicon ink jet nozzles comprising silicon nitride and/or aluminum nitride.
  • the nozzle plate of an ink jet printer which is made of glass, is coated with a material which is non-wetting relative to the aqueous characteristics of the ink composition.
  • compositions such as tetrafluoroethylene or certain silicone based materials are useful for this purpose since they have these aforementioned non-­wetting characteristics.
  • U.S. Patent 4,368,476 a liquid repellant film layer of a fluorosilicon non-­wetting compound is provided on the surface area surrounding the jet nozzle.
  • U.S. 4,643,948 an ink jet nozzle plate is coated with a non-wetting film comprising a partially fluorinated alkyl silane and a perfluorinated alkane, respectively.
  • a nozzle plate of the electrostatic ink jet printer is polished to a mirror finish and then is completely coated with a thin layer of Teflon® resin.
  • the Teflon® coating is employed for electrostatic control, not for ink drop formation. Ink drop formation is facilitated by the air-assist and mesa mechanisms. For this reason, the ink jet would work without the Teflon® coating.
  • Other articles related to the wettability per se of fluorocarbon polymeric films include articles entitled "Highly Non-­Wettable Surface of Plasma Polymer Vapor Deposition of Tetrafluoroethlyene" by B.D. Washo, in the IBM TDB, Vol. 26, No. 4, Pg. 2074, and "Wettablility of Perfluorcarbon Polymer Films: Effect of Roughness" by A.J.G. Allan, et al, in Journal of Polymer Science, Vol. XXXIX, Pg. 1.
  • phase change inks In a different ink jet printing technology, non-­aqueous, phase-change inks have been employed in place of aqueous based inks in ink jet systems.
  • a phase change ink is solid at room temperature but becomes liquid at the operating temperature of the ink jet so that it may be jetted on a recording substrate in a predetermined pattern therefrom. The jetted ink pattern solidifies on the recording substrate.
  • the problem of non-uniform ink drop ejection due to surface wetting as described above with respect to aqueous based inks can also be a problem with respect to phase change inks.
  • This problem can conceptually and in practice be overcome by specifically configuring the structure of the ink jet nozzle. Some examples are mesas, ink puddles, squeeze tubes, and dissimilar liquid puddles. However, these configurations can be more costly to fabricate than is desirable, particularly for devices consisting of arrays of jets.
  • This invention meets the foregoing need for an ink jet printing head in which the previously-described desired ink drop properties can be produced from phase change ink compositions.
  • the essential printed image characteristics can be formed on a printing medium without the need for costly reconfiguring of the design of the phase change ink jet nozzle.
  • the printed images produced from phase change ink compositions by the method and the ink jet printing head of the present invention are undegraded and have excellent acuity because of the well formed and accurately placed ink drops.
  • ink drop quality can be improved by reducing the wettability of the discharge surfaces of the ink jet heads. This is accomplished by coating these surfaces with materials which inherently exhibit a significantly lower surface energy than the aqueous-based inks.
  • the low surface energy of the coating material results in a relatively high ink contact angle which is well above the minimum angle required for reducing surface wettability near the ink discharge nozzle. Therefore, in the case of aqueous based inks, the conditions can be readily achieved for the production of high quality ink drops.
  • the above-described images can be formed with a phase change ink composition using an ink jet head having a nozzle plate that defines at least one discharge nozzle which does not have to be specifically configured. This is accomplished by increasing the ink contact angle in the area surrounding the discharge nozzles to a predetermined level thereby preventing substantial surface wetting of the surrounding area by the phase change ink composition. This ink contact angle is increased by applying a layer of a selected coating material to the discharge surface of the ink jet head.
  • individual drops of the phase change ink fluid composition having a substantially uniform size and shape can be ejected in a predetermined pattern thereby forming thereon substantially undegraded, accurately placed printed images.
  • a method for modifying an ink printing jet head as described above which comprises applying a layer of a coating material to the printing jet head surface area surrounding each said discharge nozzle.
  • This coated surrounding surface area has an increased phase change ink contact angle of at least about 50°, at an operating temperature of at least about 70°C.
  • the coated material is treated on the coated surrounding area for maintaining a high ink contact angle in the area surrounding the discharge nozzles.
  • the contact angle is at least about 20% greater than the ink contact angle for the surrounding area without treatment of the coated material. This prevents substantial surface wetting of the surrounding area by the ink composition.
  • the ink printing jet head is capable of ejecting a plurality of above-described individual drops of the phase change ink composition for forming undegraded, accurately placed printed images on a printing medium.
  • the ink jet head 10 for printing a phase change ink composition onto a printing medium is depicted.
  • the ink jet head 10 includes a body portion 12 within which a single compartment ink chamber 14 is provided.
  • the ink chamber 14 is enclosed by a plate 16 which forms a chamber wall.
  • the outer portion of the nozzle plate 16 forms a discharge surface 15.
  • a single nozzle 20 can be provided in the nozzle plate 16, a plurality of discharge nozzles and associated ink chambers are preferably furnished.
  • Ink chamber 14, comprised of sections 22 and 24, is, but need not be, of generally circular cross sectional configuration.
  • Section 24 is positioned adjacent to the wall 16 and the external ink nozzle 20, and is bounded by an interior wall 26 of ink jet head body 12.
  • Section 22 is of greater diameter than section 24, and is bounded by an interior wall 28.
  • the sections 22, 24 as depicted are, but need not be, symmetrical about the axis 30.
  • a melted phase change ink is delivered to an ink receiving inlet 32, flows through an ink passageway 34, and fills the ink chamber 14 within ink jet head 10.
  • the end of ink chamber 14 opposite to external ink nozzle 20 is closed by a flexible membrane 38, such as of stainless steel.
  • a piezoelectric ceramic disc 36 metalized on both sides and bonded to membrane 38, comprises one form of a pressure pulse generating actuator. However, other configurations using piezoelectric ceramics can be used herein.
  • a pressure pulse is generated in ink chamber 14. This causes the ejection of an ink drop from the ink external nozzle 20. Ink drops are propelled towards the printing medium where they create the requisite printed image.
  • the discharge surface 18 of the nozzle plate 16 has a layer of coating material 50 selectively applied to the ink jet head in the area surrounding, as well as into, discharge nozzle 20 for purposes of preventing substantial surface wetting of the surrounding area by the drops of the phase change ink composition being discharged from the nozzle 20.
  • the contact angle of the ink composition on the coating is substantially increased.
  • the contact angle is measured using the procedure described in ASTM D724-­45.
  • the contact angle is substantially maintained on prolonged exposure of the surrounding area to the phase change ink composition at the phase change ink operating temperature, typically at an operating temperature of at least about 70°C, preferably at least about 100°C, and most preferably at least about 150°C.
  • the contact angle of the ink composition produced by employing the present invention with respect to the coating layer 50 is maintained at least about 50°, preferably at least about 55°, and more preferably at least about 60°.
  • Coating materials were evaluated by measuring the contact angle of the phase change inks after soaking (or aging) the coating materials in the phase change inks at the 150°C temperature for a period of time of at least 24 hours.
  • the angle between a given phase change ink and coating material was measured with a goniometer manufactured by Rame'-Hart Inc, bearing Model No. 100-00-115.
  • the surface energy of the coating material is preferably lower than the surface energy of the phase change ink composition by at least about 4 dynes/cm, and more preferably at least about 6 dynes/cm.
  • the surface energy of the coating material and the surface tension of the phase change ink composition are preferably measured on a goniometer, such as described above.
  • the material generally employed as the coating layer 50 is a polymeric material, preferably a fluorocarbon polymer, having the requisite ink contact angle and surface energy levels described above.
  • the fluorocarbon polymers of choice are the Dupont trademarked Teflon® polymers, particularly Teflon® PTFE (polytetrafluoroethylene), Teflon® PFA (polyperfluoroalkoxybutadiene), or a fluorocarbon dispersion, such as a dispersion of either Teflon® PTFE or PFA.
  • the preferred dispersion is a colloidal fluorocarbon polymer dispersed in electroless nickel, such as the above-described Teflon® PTFE dispersed in Richardson Industries' "Dynaplate” formulations 75-A and 75-R.
  • Various methods can be employed for applying the coating material 50 to the ink jet head 10. These methods can include thermal evaporation of the fluorocarbon polymers, dip, spray or spin coating of aqueous fluorocarbon dispersions with subsequent thermal curing, deposition of fluoropolymers onto the substrate by plasma polymerization of precursor monomers, and deposition of inclusions of colloidal fluorocarbons in electroless nickel.
  • the preferred methods are the thermal evaporation of fluorocarbon resins and the deposition of colloidal fluorocarbons in electroless nickel.
  • the polymeric material is annealed by heating subsequent to deposition.
  • This controlled heating often takes the form of a heating cycle in which the coating layer 50 is subjected to a plurality of individual heating steps, at a plurality of individual annealing temperatures, for a period of time to complete the annealing process.
  • the preferred annealing temperature during the individual heating steps is from about 150°C to 500°C, and more preferably from about 200°C to 400°C.
  • phase change ink compositions are those which are effective at the aforementioned elevated operating temperatures.
  • the phase change ink compositions can comprise a phase change ink carrier composition, preferably including a fatty amide-­containing resin material along with a tackifier and a plasticizer, and a coloring material.
  • the preferred fatty amide resin material is a combination of a tetraamide compound and stearyl stearamide.
  • phase change ink printing jet head apparatus including a nozzle plate coated with a layer of coating material. It also sets forth a method of this invention for producing substantially undegraded, accurately placed phase change ink composition printed images. The subject coated apparatus is compared to the same printing jet head having an uncoated nozzle plate.
  • the jets were characterized in terms of the drop formation process and the maximum number of drops that could be ejected per second before jet failure occurred. These characteristics were viewed from the ink aperture to an axial location approximately 1 mm downstream of the aperture with an imaging system, an electronic delay circuit, and a strobe light.
  • the imaging system consisted of a microscope placed perpendicular to the trajectory of the ink drops. This microscope was connected to a video camera that in turn was connected to a monitor. System magnification was approximately 250X. The strobe light backlit the drops. This unit was controlled by a delay circuit that was triggered by the drive signal to this jet. The drive waveform that was used for these measurements was one cycle of a sinusoidal wave with a period of 60 microseconds. With this delay circuit, temporal measurements of the drop formation process could be made.
  • a fatty amide ink composition which comprised the following: 39.2% of a tetra-amide manufactured by Union Camp, 49.0% Stearyl Stearamide, 9.8% of Foral 105 tackifier manufactured by Hercules Inc., and 2% of Saniticizer 278 plasticizer manufactured by Monsanto Company. An operating temperature of 160°C was used with each jet.
  • the Union Camp tetraamide is produced by the reaction of one mole of dimer acid, 2 moles of ethylene diamine and 2 moles of stearic acid.
  • the contact angle was at least about 60° when the ink and surface were heated to 150°C.
  • the contact angle was at most about 20° at 150°C.
  • the voltage for each jet was set so that when each jet produced drops at a rate of 1000 drops per second, each drop reached a point one mm downstream of the nozzle in 350 microseconds.
  • a one mm distance was chosen because it is representative of how far the print medium is from the jet nozzle in a printer application.
  • rate of ejection was increased, any variation in either time required for the drops to reach one mm or in the size or shape of the drops was noted.
  • Figure 3 is a comparison of the performance of the two jets.
  • the graph indicates that the jet having a discharge nozzle without a coating disposed thereon cannot produce as many drops per second as a jet having a discharge nozzle with such a coating.
  • the jet without the coating failed to operate due to the meniscus wetting over the area surrounding the nozzle.
  • the jet with the coating operated to more than 10,000 drops/s. For both jets, single drops were produced at every repetition rate up to the point at which the jet failed.
  • the time required for a printer to produce a copy is directly related to the number of jets that are available for printing, as well as to the maximum number of drops per second that can be produced from each jet. If one thinks of the data in these terms, one might conclude that for a given copy time a printer having jets without the coating would require five times as many jets as a printer having jets with the coating. Otherwise, the copy time for the former printer would be about five times as great as for the latter.
  • nD 1/(V ⁇ t)
  • D the number of dot locations per inch
  • V the relative velocity between the media and jet during drop ejection
  • ⁇ t the range of time to reach the printing medium over the repetition rates at which the jet will print.
  • a typical value for n might be three for a maximum allowable drop placement error of one-third of a dot location. If the error were larger than this, for instance, then even though the same number of dots could be located in an inch, the information contained in these dots would not be meaningful on the media. Therefore the maximum, meaningful addressability would be less.
  • This example illustrates a preferred method of application of a coating material of the present invention.
  • Several commercial electron beam evaporators that are similar to our system are commercially available for applying the coating layer.
  • One such device is the CHA Industries electron beam evaporator, Model # SE 600.
  • the coating material was applied to a sample coupon 70, made of stainless steel of the type used in the manufacture of ink jet discharge heads, by an electron beam evaporation system 60 comprising a bell jar 62 that seals onto and is supported by base 64 in order to form an enclosed vacuum deposition chamber 66.
  • the polymeric coating material source was polyperfluoroalkoxybutadiene in the form of Teflon® PFA rod 68 located in a metal holding cup 72.
  • the deposition chamber 66 was evacuated by a pump (not shown) in communication with chamber 66.
  • a sample rack 74 was attached toward the top of the bell jar 62.
  • the sample coupon 70 was set on rack 74 immediately above the rod 68.
  • An electron beam source 76 was located immediately below the holding cup 72.
  • the chamber 66 was evacuated to an initial pressure of about 5 X 10 ⁇ 6 Torr. and a pressure during the evaporation of about 5 X 10 ⁇ 4 Torr.
  • the electron beam power was maintained during the run at about 300 watts.
  • the sample coupons were heated to a temperature of about 120°C by an infrared lamp 78 located above the sample coupons within the bell jar. Though the electron beam source is located below the holder, the beam was emitted at an angle and then focused with a magnetic field so that it was bent into the holder.
  • the polymeric rod 68 was heated to a range of between 300-600°C by the electron beam source 76 which vaporized the polytetrafluoroethylene material the vapor of which then condensed onto the sample coupon for purposes of coating same. Coatings of about 400-600 nm thickness were obtained by this method.
  • the coated samples were subsequently annealed in a belt furnace under a nitrogen atmosphere for a total period of time of about 1.75 hours over the entire cure cycle.
  • the belt furnace was divided into five temperature zones of substantially equal size.
  • the belt was driven at a constant rate of speed so that the sample has a subsequently equal residence time in each temperature zone.
  • the temperature in each zone can be the same or different than an adjacent zone.
  • the cure cycle comprises a temperature sequence of 200°-400°-400°-400°-200° C.
  • the effect of a surface coating on the ink discharge surface surrounding the nozzle of a phase change ink jet was determined by comparing the ink wetting properties of coated and uncoated sample coupons made of stainless steel of the type used in the manufacture of ink jet discharge heads.
  • the wetting properties of two samples, one PFA coated and one uncoated sample were as follows:
  • ink jet heads coated with treated (annealed), aged fluorocarbon polymer will maintain a high contact angle, even upon prolonged exposure to phase change inks at operating temperatures, and in turn less degraded, more accurately placed printed images of the type previously set forth, than their untreated counterparts.
  • EXAMPLE 2 was repeated employing a composite, coating layer of a fluorocarbon polymeric dispersion, in this case a dispersion of the polymer in electroless nickel.
  • a commericial electroless nickel mixture was utilized in the form of a Richardson Industries Dynaplate formulation.
  • a boro-nickel composite was used herein, although most of these formulations are phosphate nickel based.
  • a mixture of 150 ml/liter of Richardson Industries 752A preparation, 50 ml/liter of Richardson Industries 752A preparation, and 800 ml of distilled water were mixed with 50 ml of a DuPont 30 submicro PTFE emulsion, and were used as the coating material.
  • Stainless steel sample coupons were immersed in the above coating mixture at 85-90°C for a period of 10 to 30 minutes and produced coating in the order of .0001" to .0004" thickness. The coupons were then annealed under nitrogen at 300°C for one hour.
  • the contact angle of the ink on the sample before aging was 60°, and was 58° after aging.
  • the aging was conducted in the same manner as in EXAMPLE 2.
  • ink jet heads coated with other treated, unaged and aged fluorocarbon polymer, and more particularly the fluorocarbon polymeric dispersion described above can be fabricated which will produce the requisite contact angle, and therefore the undegraded, accurately placed printed images of the the type previously set forth, even from phase change ink compositions.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
EP89306750A 1988-07-05 1989-07-03 Modifizierter Tintenstrahldruckkopf und Verfahren zur Produktion von tintenstrahlgedruckten Bildern Withdrawn EP0359365A1 (de)

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US215126 1988-07-05

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5378504A (en) * 1993-08-12 1995-01-03 Bayard; Michel L. Method for modifying phase change ink jet printing heads to prevent degradation of ink contact angles
EP0661158A2 (de) * 1994-01-03 1995-07-05 Xerox Corporation Tintenstrahldrucken
US5434606A (en) * 1991-07-02 1995-07-18 Hewlett-Packard Corporation Orifice plate for an ink-jet pen
US5598193A (en) * 1995-03-24 1997-01-28 Hewlett-Packard Company Treatment of an orifice plate with self-assembled monolayers
US5653901A (en) * 1993-08-18 1997-08-05 Brother Kogyo Kabushiki Kaisha Method of fabricating a nozzle plate
EP0825028A1 (de) * 1996-08-22 1998-02-25 Océ-Technologies B.V. Tintenstrahlkopf mit heissschmelzender Tinte
EP0825025A1 (de) * 1996-08-22 1998-02-25 Océ-Technologies B.V. Tintenstrahlkopf mit heissschmelzender Tinte
EP0878522A1 (de) * 1997-05-16 1998-11-18 Seiko Epson Corporation Tintenstrahl-Aufzeichnungstinten
US6016601A (en) * 1991-03-28 2000-01-25 Seiko Epson Corporation Method of preparing the nozzle plate
US6737109B2 (en) 2001-10-31 2004-05-18 Xerox Corporation Method of coating an ejector of an ink jet printhead
CN100464982C (zh) * 2005-04-19 2009-03-04 索尼株式会社 液体排出头及其制造方法、基片元件、以及打印装置
US8428495B2 (en) 2008-10-28 2013-04-23 Hewlett-Packard Developent Company, L.P. Coatings for LEP printers, LEP printer structures, LEP printers, and methods of inhibiting sludge formation
KR20130118263A (ko) * 2012-04-19 2013-10-29 제록스 코포레이션 잉크젯 프린트헤드 정면을 위한 코팅 및 잉크젯 프린트헤드 정면을 위한 소유성 저접착성 코팅 형성 방법

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US6000783A (en) * 1991-03-28 1999-12-14 Seiko Epson Corporation Nozzle plate for ink jet recording apparatus and method of preparing said nozzle plate
JP3169037B2 (ja) * 1993-10-29 2001-05-21 セイコーエプソン株式会社 インクジェット記録ヘッドのノズルプレートの製造方法
JP3478669B2 (ja) * 1995-06-13 2003-12-15 キヤノン株式会社 溶剤易溶性のフッ素含有エポキシ樹脂組成物およびそれを用いた表面処理方法

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US4555062A (en) * 1983-04-05 1985-11-26 Hewlett-Packard Company Anti-wetting in fluid nozzles
US4728392A (en) * 1984-04-20 1988-03-01 Matsushita Electric Industrial Co., Ltd. Ink jet printer and method for fabricating a nozzle member
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EP0213240A1 (de) * 1985-08-06 1987-03-11 Dataproducts Corporation Tintenstrahleinrichtung mit Veränderung des Farbstoffzustandes

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6357857B1 (en) 1991-03-28 2002-03-19 Kiyohiko Takemoto Nozzle plate for ink jet recording apparatus and method of preparing said nozzle plate
US6016601A (en) * 1991-03-28 2000-01-25 Seiko Epson Corporation Method of preparing the nozzle plate
US5434606A (en) * 1991-07-02 1995-07-18 Hewlett-Packard Corporation Orifice plate for an ink-jet pen
US5595785A (en) * 1991-07-02 1997-01-21 Hewlett-Packard Company Orifice plate for an ink-jet pen
EP0638425A2 (de) * 1993-08-12 1995-02-15 Tektronix, Inc. Anpassungsverfahren zum Vermeiden eines sich verschlechternden Tintenkontaktwinkels für Tintenstrahldruckköpfe, die mit einer die Phase wechselnden Tinte arbeiten
EP0638425A3 (de) * 1993-08-12 1996-01-17 Tektronix Inc Anpassungsverfahren zum Vermeiden eines sich verschlechternden Tintenkontaktwinkels für Tintenstrahldruckköpfe, die mit einer die Phase wechselnden Tinte arbeiten.
US5378504A (en) * 1993-08-12 1995-01-03 Bayard; Michel L. Method for modifying phase change ink jet printing heads to prevent degradation of ink contact angles
US5653901A (en) * 1993-08-18 1997-08-05 Brother Kogyo Kabushiki Kaisha Method of fabricating a nozzle plate
EP0661158A3 (de) * 1994-01-03 1997-01-15 Xerox Corp Tintenstrahldrucken.
EP0661158A2 (de) * 1994-01-03 1995-07-05 Xerox Corporation Tintenstrahldrucken
US5598193A (en) * 1995-03-24 1997-01-28 Hewlett-Packard Company Treatment of an orifice plate with self-assembled monolayers
EP0825028A1 (de) * 1996-08-22 1998-02-25 Océ-Technologies B.V. Tintenstrahlkopf mit heissschmelzender Tinte
EP0825025A1 (de) * 1996-08-22 1998-02-25 Océ-Technologies B.V. Tintenstrahlkopf mit heissschmelzender Tinte
US6130687A (en) * 1996-08-22 2000-10-10 Oce-Technologies B.V. Hot-melt ink-jet printhead
EP0878522A1 (de) * 1997-05-16 1998-11-18 Seiko Epson Corporation Tintenstrahl-Aufzeichnungstinten
US6051057A (en) * 1997-05-16 2000-04-18 Seiko Epson Corporation Ink jet recording ink
US6737109B2 (en) 2001-10-31 2004-05-18 Xerox Corporation Method of coating an ejector of an ink jet printhead
CN100464982C (zh) * 2005-04-19 2009-03-04 索尼株式会社 液体排出头及其制造方法、基片元件、以及打印装置
US8428495B2 (en) 2008-10-28 2013-04-23 Hewlett-Packard Developent Company, L.P. Coatings for LEP printers, LEP printer structures, LEP printers, and methods of inhibiting sludge formation
KR20130118263A (ko) * 2012-04-19 2013-10-29 제록스 코포레이션 잉크젯 프린트헤드 정면을 위한 코팅 및 잉크젯 프린트헤드 정면을 위한 소유성 저접착성 코팅 형성 방법
KR101933228B1 (ko) 2012-04-19 2018-12-27 제록스 코포레이션 잉크젯 프린트헤드 정면을 위한 코팅 및 잉크젯 프린트헤드 정면을 위한 소유성 저접착성 코팅 형성 방법

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JPH0764061B2 (ja) 1995-07-12
JPH0255140A (ja) 1990-02-23

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