US4725860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink carrier film in use with ink jet recording device
Assignee: Toshiba Corp
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Filing: 1986-05-14
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Granted: 1988-02-16
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Expires: 2006-05-14
Abstract
Abstract An ink jet recording device in which an ink carrier film is formed to have a plurality of pores or recesses, the pores or recesses are filled with ink, the film filled at their pores or recesses with the ink is quickly heated by such a heat supply source as a thermal head according to picture image information to generate bubbles within the ink in the heated pores or recesses and to eject the ink onto a recording medium under influence of the pressure of the bubbles for recording. The ink carrier film comprises at least two layers one of which on a side of the heat supply source is made of a heat-insulating, low-friction material, thus improving the thermal efficiency of the ink carrier film and minimizing the frictional wear of the heat supply source.
Inventors
- 👤 Mitsuaki Kohyama
- 👤 Yasuo Hosaka
- 👤 Tadayoshi Ohno
- 👤 Yuuji Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:49
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/14; B41J2/14016; B41J2/14161; B41J2002/14169
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
133 words
An ink carrier film formed with a plurality of pores or recesses for use in an ink jet recording device including an ink supplying means for supplying ink into said pores or recesses, a heat supplying means driven according to picture image information for heating the ink filled with said pores or recesses of said film to generate a bubble in the ink so as to eject the ink onto a recording medium by the air pressure in said bubble, and film conveying means for conveying said film between said ink supplying means and said heat supplying means, said ink carrier film comprising at least two layers, one of said layers which is disposed on the side of said heat supplying means being made of a material having at least heat insulating property.
Claim 2
Dependent Claim
133 words
An ink carrier film formed with a plurality of pores or recesses for use in an ink jet recording device including an ink supplying means for supplying ink into said pores or recesses, a heat supplying means driven according to picture image information for heating the ink filled with said pores or recesses of said film to generate a bubble in the ink so as to eject the ink onto a recording medium by the air pressure in said bubble, and film conveying means for conveying said film between said ink supplying means and said heat supplying means, said ink carrier film comprising at least two layers, one of said layers which is disposed on the side of said heat supplying means being made of a material having at least heat insulating property.
Claim 3
Dependent Claim
20 words
A film as set forth in claim 1, wherein said material has low friction property together with heat insulating property.
Claim 4
Dependent Claim
26 words
A film as set forth in claim 1, wherein said heat insulating material is fluorine-contained polymer such as ethylene trifluoride, ethylene tetrafluoride or ethylene hexafluoride polymer.
Claim 5
Dependent Claim
20 words
A film as set forth in claim 1, wherein said heat insulating material is polyimide, polypropylene or polyphenylene oxide polymer.
Claim 6
Dependent Claim
28 words
A film as set forth in claim 1, wherein said heat insulating material is ceramic made of SiO 2 , SiC, SiN or B 4 N 3 .
Claim 7
Dependent Claim
24 words
A film as set forth in claim 1, wherein said heat insulating material is a coating material using fluorine-contained polymer as a binder resin.
Claim 8
Dependent Claim
28 words
A film as set forth in claim 1, wherein said heat insulating material is a coating material using polyimide, polypropylene or polyphenylene oxide polymer as a binder resin.
Claim 9
Dependent Claim
21 words
A film as set forth in claim 1, wherein said heat insulating material has a thickness of 2 to 20 μm.
Claim 10
Dependent Claim
36 words
A film as set forth in claim 1, wherein other layer of said ink carrier film which is disposed on the side of said recording medium is made of such metal as nickel or stainless steel.
Claim 11
Dependent Claim
60 words
A film as set forth in claim 1, wherein said film comprises two layers, one of said layers which is disposed on the side of said recording medium being a nickel film of 15 μm thick and the other which is disposed on a side of said heat supply means being a ethylene trifluoride film of about 5 μm thick.
Claim 12
Dependent Claim
61 words
A film as set forth in claim 1, wherein said film comprises two layers, one of said layers which is disposed on the side of said recording medium having a thickness of 8 to 50 μm, said heat insulating material layer having a thickness of 2 to 20 μm and said film having a total thickness of 10 to 60 μm.
Claim 13
Dependent Claim
30 words
A film as set forth in claim 1, wherein said ink carrier film is housed in a cassette together with said ink supply means including a sponge impregnated with ink.
Claim 14
Dependent Claim
28 words
A film as set forth in claim 1, wherein said heat supply means is a thermal head which comprises a plurality of heating elements to be selectively heated.
Claim 15
Dependent Claim
31 words
A film as set forth in claim 12, wherein each of said pores or recesses in said ink carrier film corresponds to one of said heating elements of said thermal head.
Claim 16
Dependent Claim
32 words
A film as set forth in claim 12, wherein each of said pores or recesses in said ink carrier film corresponds to a plurality of said heating elements of said thermal head.
Claim 17
Dependent Claim
26 words
A film as set forth in claim 1, wherein said pores or recesses of said ink carrier film are made to be square in sectional shape.
Claim 18
Dependent Claim
26 words
A film as set forth in claim 1, wherein said pores or recesses of said ink carrier film are made to be tapered in sectional shape.
Claim 19
Dependent Claim
49 words
The film as set forth in claim 1, wherein the film has three layers comprising the heat insulating layer, a metallic layer provided on the side of the heat insulating layer opposite to the heat supplying means, and a protective layer on the upper side of the metallic layer.
Claim 20
Dependent Claim
25 words
The film as set forth in claim 18, wherein the heat insulating layer is a polyimide film and the metallic layer is a nickel coating.
Claim 21
Dependent Claim
16 words
The film as set forth in claim 19, wherein the protective layer is a tetrafluoroethylene coating.
Claim 22
Dependent Claim
29 words
The film as set forth in claim 18, further comprising a siloxane derivative layer provided on the side of the heat insulating layer disposed to the heat supplying means.
References Cited (Backward Citations)
US3655379A
Cited
US3834301A
Cited
US4603986A
Cited
JPS6071260A
Cited
US4608577A
Cited
US4630075A
Cited
US4652893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-15 | 1991-08-17 | 1992-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-15 | 1995-08-17 | 1996-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-15 | 1999-08-17 | 2000-02-16 | $7700.00 | Window Closed / Lapsed |