EP0475943A1 - Hydrophobierungsmittel und anwendungsverfahren, insbesondere bei tintenstrahldruckköpfen. - Google Patents
Hydrophobierungsmittel und anwendungsverfahren, insbesondere bei tintenstrahldruckköpfen.Info
- Publication number
- EP0475943A1 EP0475943A1 EP90902613A EP90902613A EP0475943A1 EP 0475943 A1 EP0475943 A1 EP 0475943A1 EP 90902613 A EP90902613 A EP 90902613A EP 90902613 A EP90902613 A EP 90902613A EP 0475943 A1 EP0475943 A1 EP 0475943A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- treatment
- compound
- carried out
- ink
- radicals
- 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
- 238000000034 method Methods 0.000 title claims description 20
- 238000004078 waterproofing Methods 0.000 title 1
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 239000005871 repellent Substances 0.000 claims abstract description 7
- 230000002940 repellent Effects 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 23
- 230000002209 hydrophobic effect Effects 0.000 claims description 16
- 150000001875 compounds Chemical class 0.000 claims description 15
- 238000009736 wetting Methods 0.000 claims description 14
- 150000003254 radicals Chemical class 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 9
- -1 alkyl radical Chemical class 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- 125000003545 alkoxy group Chemical group 0.000 claims description 3
- 150000005840 aryl radicals Chemical class 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims description 3
- 150000002367 halogens Chemical group 0.000 claims description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 3
- 125000002577 pseudohalo group Chemical group 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 claims description 2
- 230000005661 hydrophobic surface Effects 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 238000010025 steaming Methods 0.000 claims description 2
- 239000004890 Hydrophobing Agent Substances 0.000 claims 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims 1
- 229910052801 chlorine Inorganic materials 0.000 claims 1
- 239000000460 chlorine Substances 0.000 claims 1
- 239000003039 volatile agent Substances 0.000 claims 1
- 239000003960 organic solvent Substances 0.000 abstract description 7
- 229910052710 silicon Inorganic materials 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 abstract description 5
- 229910000077 silane Inorganic materials 0.000 abstract description 5
- 239000010703 silicon Substances 0.000 abstract description 4
- 125000000962 organic group Chemical group 0.000 abstract 1
- 230000002085 persistent effect Effects 0.000 abstract 1
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
- 239000000976 ink Substances 0.000 description 50
- 239000000463 material Substances 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 239000004569 hydrophobicizing agent Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000003125 aqueous solvent Substances 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 150000004756 silanes Chemical class 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- ZDHXKXAHOVTTAH-UHFFFAOYSA-N trichlorosilane Chemical compound Cl[SiH](Cl)Cl ZDHXKXAHOVTTAH-UHFFFAOYSA-N 0.000 description 1
- 239000005052 trichlorosilane Substances 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
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
- Water repellents and application methods in particular _ in inkjet printheads.
- the invention relates to a hydrophobizing agent for surface treatment, in particular of ink jet print heads, and to a method for hydrophobizing a surface.
- surfaces may be desired for objects which are poorly or not wetted by liquids.
- this may be desirable or necessary to avoid corrosion, for example in the case of metallic body parts of vehicles.
- Textiles can also be treated with a water-repellent treatment in order to prevent wetting and ultimately also getting wet of the fibers or the fabric.
- wetting the surface can be disadvantageous for technical reasons. For example, in the case of printheads of ink jet recording devices, the wetting behavior of these printheads bit of the ink is of great importance for the print quality that can be achieved.
- characters are displayed on a recording medium by ejecting individual ink droplets from the nozzles of a writing or printing head which is part of an ink printing device.
- characters and / or graphic patterns can be generated on the recording medium.
- the quality of the recording depends to a large extent on the uniformity of the droplet ejection.
- the individual droplets must have a defined size and leave the nozzle of the print head at the same speed.
- DE-OS 3 047 835 describes a fluorine-containing hydrophobicizing agent.
- this agent contains a silane with a perfluorinated organic residue.
- a disadvantage of these known hydrophobizing agents is the poor adhesion to the materials from which the nozzle opening is formed (glass, ceramic or metal). In this way, the silicone oil is washed away by the ink as the operating time increases.
- this treatment agent which is initially effective against ink with aqueous solvents, shows a marked deterioration in the repulsive forces over time against inks with organic solvents. Fluorine-containing treatment agents repel the ink better, but the effect has a limited shelf life.
- REPLACEMENT LEAF shows a high and permanent repellency against non-aqueous inks.
- hydrophobizing agent of the type mentioned at the outset which according to the invention is characterized in that it contains at least one compound of the general formula I,
- R represents an at least partially fluorinated alkyl or aryl radical
- X represents halogen or pseudohalogen or represents a hydroxyl, an amino or a hydrolyzable alkoxy group
- A represents an alkyl radical having 1 to 6 carbon atoms
- the indices n, o and p give a total of 4, where n and o are each independently 1, 2 or 3 and p is 0, 1 or 2.
- hydrophobic layers can be produced on a wide variety of surfaces which have a good repellent effect against both aqueous and organic solvents or are poorly or not at all wetted by these solvents. This applies in particular to the surfaces of ink jet recording heads in the mouth area of the nozzles.
- Surface of the recording head made of various materials, which result from the thin-film construction of the printhead or recording head. These materials are, for example, metal, silicon, silicon oxide, photoresist (for example acrylate) or glass and thus give a representative cross section over the surfaces which can be treated with the hydrophobicizing agent according to the invention.
- REPLACEMENT LEAF Compounds according to the invention can have a wetting angle. This describes the angle that a drop of liquid forms in contact with a surface. The more repulsive the interactions between the liquid and the surface, or the material of the surface, the greater the wetting angle.
- a wetting angle of 90 * and greater is measured on the surfaces described. This significantly exceeds the value achieved by known water repellents.
- the durability of the hydrophobizing effect of a surface treated with the agent according to the invention results from long-term tests.
- treated with the agents according erfindungs ⁇ recording heads are stored for four weeks at 50 * C in an ink holding next 80 percent of water, further organic solvents, dye and additives ent.
- the wetting angle is then determined again. With all the compounds according to the invention, only a reduction of this angle by a maximum of 10 "is observed. This shows the excellent resistance of the hydrophobic effect or the excellent adhesion of the agent to the treated surfaces.
- the number of residues X bonded to the silicon thereby expressed corresponds at the same time to the number of binding sites with which the hydrophobizing agent can be bonded to a surface or to the material of the surface via the silicon atom.
- the group X namely carries a self-contained fragment (for example the proton in the case of a hydroxyl group) or itself represents a leaving group for a substitution reaction (for example halogen atom). Therefore, with two or three X radicals present per molecule, "crosslinking" occurs
- the chlorinated silanes then present generally have a high volatility or a high vapor pressure even at room temperature. This is particularly advantageous for the treatment according to the invention of a surface with the silane according to the invention. The treatment can then already be carried out in the gas phase at room temperature. A chemical reaction with the surface produces a hydrophobic layer even under these conditions and without further aftertreatments. However, a thermal aftertreatment can also be carried out to shorten the process.
- the fluorinated radical R is essentially responsible for the hydrophobic effect of the hydrophobizing agent. This is advantageously perfluorinated and represents, for example, an alkyl or cycloalkyl group with 1 to 6 carbon atoms. From a certain chain length, the extent of the hydrophobic effect is scarcely any more from the radical R or the number contained therein ⁇ dependent fluorine atoms. However, good hydrophobic effects are already achieved with a trifluoromethyl group.
- one or two groups A can be present on the silicon atom. These represent alkyl groups, preferably methyl groups. They have hardly any influence on the hydrophobic effect of the silane, but may be necessary to round off the other properties of the hydrophobizing agent and can, for example, increase the vapor pressure or specifically influence the reactivity.
- the hydrophobizing agent is a liquid at room temperature
- the treatment can be carried out by dipping, spraying or steaming the surface to be treated. In principle, no further measures are required for this, but the treatment for acceleration can be carried out at temperatures up to approximately 80 °.
- a further shortening of the process for hydrophobization can be achieved by a thermal aftertreatment. However, this has no significant influence on the hydrophobic properties and the stability of the hydrophobic effect on most surfaces.
- Treatment of a surface with the hydrophobizing agent in the gas phase at temperatures up to 80 ° C. brings technical advantages. This is particularly advantageous in the case of ink jet recording heads, since in a gas phase process the ink channels are easily exposed to a flowing inert gas (such as nitrogen). can be protected against unwanted hydrophobization.
- a flowing inert gas such as nitrogen
- the gas or vapor phase treatment is advantageously distinguished from an immersion treatment.
- REPLACEMENT LEAF a closure of the ink channels is required, which can be achieved, for example, by filling in mercury, water and other liquid media. Otherwise, the capillary forces of the ink channels would cause the water repellent to penetrate into them, which is not to be feared in the gas phase.
- the duration of the treatment is 0.5 to 10 minutes and, as already mentioned, can be shortened by a thermal aftertreatment or by increasing the temperature during the treatment, but this is in principle not necessary.
- the treatment makes the surfaces so hydrophobic that when the surfaces come into contact with aqueous or organic solvents a wetting angle of 90 * and more is formed.
- the ink drop forms directly above the ink channel or the nozzle of the ink channel and does not wet the surface adjacent to the nozzle in the mouth area.
- Such a drop consequently has a precisely defined size, which only depends on the other adjustable parameters of the ink (for example viscosity and temperature).
- a drop of ink of such a defined size can be thrown onto a record carrier, for example paper, in a reproducible manner, resulting in a clean and exact typeface. With the same droplet size, the same droplet trajectory can always be maintained towards the recording medium, so that a reproducible pixel is created there.
- FIG. 1 shows an ink jet recording head in a schematic representation
- FIG. 1 An ink jet recording head can be made, for example, in a thin film construction. Such a structure is shown schematically in the figure.
- a silicon wafer is glued onto a metal plate 1, for example made of aluminum, as the substrate 2.
- a metal plate 1 for example made of aluminum
- the actual ink channels 6 are implemented, for example, in a photoresist layer.
- the side walls 5 of the ink channels 6 consist of an acrylate resin.
- the upper boundary of the ink channels 6 is formed by a glass plate 8 glued over an acrylate layer 7.
- Such a recording head is now steamed in a closed chamber with the hydrophobicizing agent according to the invention.
- a certain amount of tri-decafluorooctyl ⁇ trichlorosilane is slightly warmed in a dry atmosphere (no water or water vapor).
- the recording head is removed from the chamber and post-treated in a suitable oven at, for example, 80 ° C. for a further five minutes.
- the surface of the recording head is now provided with a thin layer of the hydrophobicizing agent, the individual molecules of which are passed through
- the side surface of the platelet-shaped recording head for example, in which a hydrophobic effect is desired, is the area into which the ink channels 6 open and which is spanned by the coordinate axes a and b shown in FIG. 1.
- FIG. 2 shows a schematic cross section through such an ink channel during the printing operation and represents the situation shortly before an ink droplet is thrown off
- An ink containing, for example, 80 percent water (in addition to dye, other organic solvents and additives) is led to the surface 12 (a, b) of the recording head via the ink channel 10.
- the surface 12 in the region adjacent to the nozzle of the ink channel 10 is so hydrophobic that the ink droplet 11 is formed exclusively via the ink channel 10.
- the drop 11 forms an angle 13 which corresponds to the opposite angle of the so-called wetting angle. It can be clearly seen that the angle 13 is less than 90 ⁇ and the wetting angle is therefore greater than 90 ° by the same amount.
- hydrophobizing agent according to the invention and the method for using it for ink jet recording heads have particular advantages, the invention is not restricted to these, since any surfaces can be treated with the aid of the hydrophobizing agent.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Ink Jet (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3918472 | 1989-06-06 | ||
| DE3918472A DE3918472A1 (de) | 1989-06-06 | 1989-06-06 | Hydrophobierungsmittel und anwendungsverfahren, insbesondere bei tintenstrahldruckkoepfen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0475943A1 true EP0475943A1 (de) | 1992-03-25 |
| EP0475943B1 EP0475943B1 (de) | 1993-05-19 |
Family
ID=6382197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90902613A Expired - Lifetime EP0475943B1 (de) | 1989-06-06 | 1990-02-08 | Hydrophobierungsmittel und anwendungsverfahren, insbesondere bei tintenstrahldruckköpfen |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0475943B1 (de) |
| JP (1) | JPH04505895A (de) |
| DE (2) | DE3918472A1 (de) |
| WO (1) | WO1990014958A1 (de) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4207626C2 (de) * | 1992-03-06 | 1996-09-12 | Eastman Kodak Co | Hydrophobierungsmittel |
| DE4210160C2 (de) * | 1992-03-25 | 2001-03-08 | Eastman Kodak Co | Verfahren und Vorrichtung zum Auftragen eines Hydrophobierungsmittels |
| DE4407839A1 (de) * | 1994-03-09 | 1995-09-14 | Eastman Kodak Co | Verfahren zur Beeinflußung des Benetzungswinkels der Düsenaustrittsfläche von Tintendruckköpfen |
| CA2230584A1 (en) * | 1996-06-28 | 1998-01-08 | Pelikan Produktions Ag | Hydrophobic coating for ink jet printing heads |
| US6190003B1 (en) | 1996-12-20 | 2001-02-20 | Seiko Epson Corporation | Electrostatic actuator and manufacturing method therefor |
| US6028618A (en) * | 1997-02-22 | 2000-02-22 | Agfa-Gevaert | Thermal printing head coating |
| DE69704844T2 (de) * | 1997-02-22 | 2001-11-08 | Agfa-Gevaert N.V., Mortsel | Beschichtung für Thermodruckkopf |
| DE10163567A1 (de) * | 2001-12-21 | 2003-07-17 | Endress & Hauser Gmbh & Co Kg | Drucksensor mit hydrophober Beschichtung |
| US7344226B2 (en) | 2005-04-04 | 2008-03-18 | Silverbrook Research Pty Ltd | Method of hydrophobically coating a printhead |
| US7328976B2 (en) | 2005-04-04 | 2008-02-12 | Silverbrook Research Pty Ltd. | Hydrophobically coated printhead |
| WO2006105571A1 (en) * | 2005-04-04 | 2006-10-12 | Silverbrook Research Pty Ltd | Method of hydrophobically coating a printhead |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL124484C (de) * | 1964-05-20 | |||
| US3442664A (en) * | 1966-04-26 | 1969-05-06 | Minnesota Mining & Mfg | Treating composition,method of treating and treated surfaces |
| GB1376315A (en) * | 1971-06-23 | 1974-12-04 | Ici Ltd | Anti-misting compositions |
| US3721690A (en) * | 1971-07-26 | 1973-03-20 | Lockheed Aircraft Corp | Water repellent compositions of organotin and organosilicon complexes |
| US4361842A (en) * | 1979-09-14 | 1982-11-30 | Canon Kabushiki Kaisha | Recording method using film forming liquid composition |
| JPS5689569A (en) * | 1979-12-19 | 1981-07-20 | Canon Inc | Ink jet recording head |
| JPS5928591B2 (ja) * | 1980-11-25 | 1984-07-13 | 大日本塗料株式会社 | ジエツト印刷用インク |
| US4437100A (en) * | 1981-06-18 | 1984-03-13 | Canon Kabushiki Kaisha | Ink-jet head and method for production thereof |
| FR2527625A1 (fr) * | 1982-05-27 | 1983-12-02 | Chloe Chemie | Composition a base de fluorochlorohydrocarbure, d'ester phosphorique et d'acide carboxylique |
| DE3322647A1 (de) * | 1982-06-25 | 1983-12-29 | Canon K.K., Tokyo | Verfahren zur herstellung eines tintenstrahl-aufzeichnungskopfes |
| US4609427A (en) * | 1982-06-25 | 1986-09-02 | Canon Kabushiki Kaisha | Method for producing ink jet recording head |
| DE3228660C2 (de) * | 1982-07-31 | 1985-11-14 | Dynamit Nobel Ag, 5210 Troisdorf | Tiefenimprägnierung von Schwerbeton |
| FR2566788A1 (fr) * | 1984-06-29 | 1986-01-03 | Atochem | Composition de demouillage a base de fluorochlorohydrocarbure de tensio-actif et d'acide carboxylique |
| DE3430921A1 (de) * | 1984-08-22 | 1986-02-27 | Siemens AG, 1000 Berlin und 8000 München | Mehrfarben-mosaikschreibkopf |
| DE3583275D1 (de) * | 1984-09-28 | 1991-07-25 | Matsushita Electric Industrial Co Ltd | Verfahren zur herstellung eines duesenkoerpers fuer einen tintenstrahldrucker. |
| US4643948A (en) * | 1985-03-22 | 1987-02-17 | International Business Machines Corporation | Coatings for ink jet nozzles |
| US4617057A (en) * | 1985-06-04 | 1986-10-14 | Dow Corning Corporation | Oil and water repellent coating compositions |
| DE3618596A1 (de) * | 1985-06-11 | 1986-12-11 | Canon K.K., Tokio/Tokyo | Fluessigkeitsstrahl-aufzeichnungskopf und diesen fluessigkeitsstrahl-aufzeichnungskopf enthaltendes aufzeichnungssystem |
| JPS62167357A (ja) * | 1986-01-18 | 1987-07-23 | Shin Etsu Chem Co Ltd | 室温硬化性オルガノポリシロキサン組成物 |
-
1989
- 1989-06-06 DE DE3918472A patent/DE3918472A1/de not_active Withdrawn
-
1990
- 1990-02-08 EP EP90902613A patent/EP0475943B1/de not_active Expired - Lifetime
- 1990-02-08 JP JP2502541A patent/JPH04505895A/ja active Pending
- 1990-02-08 WO PCT/DE1990/000079 patent/WO1990014958A1/de not_active Ceased
- 1990-02-08 DE DE9090902613T patent/DE59001512D1/de not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9014958A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59001512D1 (de) | 1993-06-24 |
| JPH04505895A (ja) | 1992-10-15 |
| DE3918472A1 (de) | 1990-12-13 |
| EP0475943B1 (de) | 1993-05-19 |
| WO1990014958A1 (de) | 1990-12-13 |
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