Claims
- 1. A liquid jet printing head includes a discharging outlet for discharging a printing liquid, an energy generating element for generating energy for discharging said liquid through said discharging outlet and a discharging outlet face at which said discharging outlet is disposed, characterized in that said discharging outlet face has a water repellent material layer comprising a plurality of fine particles of an inorganic material distributed in a water repellent resin in a desired distribution state wherein an amount of said fine particles of said inorganic material contained in said water repellent material layer is in a range of between 7 and 15 parts by weight versus 100 parts by weight of said water repellent resin and wherein some of said inorganic material fine particles are spacedly protruded at a surface of said water repellent material layer.
- 2. A liquid jet printing head according to claim 1, wherein the water repellent resin is selected from the group consisting of fluoroolefin-vinyl ether alternating copolymers, photoradical polymerization type fluorine-contained resins comprising reactive oligomers and diluent monomers, copolymerization type fluorine-contained polymers, fluorosilicons, and perfluorocyclopolymers.
- 3. A liquid jet printing head according to claim 1, wherein the inorganic material is selected from the group consisting of silica, alumina and magnesia.
- 4. A liquid jet printing head according to claim 1, wherein the energy generating element comprises an electrothermal converting body.
- 5. A liquid jet printing head according to claim 1, wherein the inorganic material fine particles are substantially uniformly distributed in the water repellent material layer.
- 6. A liquid jet printing head according to claim 1, wherein the inorganic material fine particles are of 1.0 μm or less in mean particle size.
- 7. A liquid jet printing head according to claim 6, wherein the inorganic material fine particles are of 0.5 μm or less in mean particle size.
- 8. A liquid jet printing apparatus comprising: a liquid jet printing head including a discharging outlet for discharging a printing liquid, an energy generating element for generating energy for discharging said liquid through said discharging outlet and a discharging outlet face at which said discharging outlet is disposed; and means for supplying a driving signal to said energy generating element of said liquid jet printing head, characterized in that said discharging outlet face of said liquid jet printing head has a water repellent material layer comprising a plurality of fine particles of an inorganic material distributed in a water repellent resin in a desired distribution state wherein an amount of said fine particles of said inorganic material contained in said water repellent material layer is in a range of between 7 and 15 parts by weight versus 100 parts by weight of said water repellent resin and wherein some of said inorganic material fine particles are spacedly protruded at a surface of said water repellent material layer.
- 9. A liquid jet printing apparatus according to claim 8, wherein the water repellent resin is selected from the group consisting of fluoroolefin-vinyl ether alternating copolymers, photoradical polymerization type fluorine-contained resins comprising reactive oligomers and diluent monomers, copolymerization type fluorine-contained polymers, fluorosilicons, and perfluorocyclopolymers.
- 10. A liquid jet printing apparatus according to claim 8, wherein the inorganic material is selected from the group consisting of silica, alumina and magnesia.
- 11. A liquid jet printing apparatus according to claim 8, wherein the energy generating element comprises an electrothermal converting body.
- 12. A liquid jet printing apparatus according to claim 8, wherein the inorganic material fine particles are substantially uniformly distributed in the water repellent material layer.
- 13. A liquid jet printing apparatus according to claim 8, wherein the inorganic material fine particles are of 1.0 μm or less in mean particle size.
- 14. A liquid jet printing apparatus according to claim 13, wherein the inorganic material fine particles are of 0.5 μm or less in mean particle size.
Priority Claims (2)
Number |
Date |
Country |
Kind |
4-239714 |
Sep 1992 |
JP |
|
4-245044 |
Sep 1992 |
JP |
|
Parent Case Info
This application is a continuation, of application Ser. No. 08/240,708, filed Sep. 1, 1994, now abandoned which is 371 of PCT/JP 93/01271 filed Sep. 8, 1993.
US Referenced Citations (3)
Foreign Referenced Citations (4)
Number |
Date |
Country |
403133650 |
Jun 1991 |
JP |
357157765 |
Sep 1982 |
JP |
361291148 |
Dec 1986 |
JP |
57-175765 |
Sep 1992 |
JP |
Continuations (1)
|
Number |
Date |
Country |
Parent |
08/240708 |
|
US |
Child |
08/755358 |
|
US |