Patent US4860033A successfully refreshed from Google Patents.
US4860033A
Expired / Lapsed
US
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Base plate having an oxidation film and an insulating film for ink jet recording head and ink jet recording head using said base plate
Assignee: Canon Inc
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Filing: 1988-02-01
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Granted: 1989-08-22
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Expires: 2008-02-01
Abstract
Abstract A base plate for ink jet recording head provided with an electricity-heat convertor and an ink jet recording head using the same are provided. The electricity-heat convertor comprises a substrate, a pair of electrodes electrically connected to said heat-generating resistor, an oxidized film provided by local anodic oxidation of the surface of said heat-generating resistor between said electrodes, and an organic insulating film provided on said electrodes and on at least a part of said heat-generating resistor between said electrodes.
Inventors
- 👤 Atsushi Shiozaki
- 👤 Hirokazu Komuro
- 👤 Koichi Sato
- 👤 Kazuaki Masuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:08
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/16; B41J2/1621; B41J2/164; B41J2/1646; B41J2/1601; B41J2/1604; B41J2/1623; B41J2/1631; B41J2/1632; B41J2/1645
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
100 words
A base plate for an ink jet recording head provided with an electricity-heat convertor comprising: a substrate; a heat-generating resistor provided on said substrate; a pair of electrodes electrically connected to said heat-generating resistor; an oxidized film provided by local anodic oxidation of a surface of said heat-generating resistor between said electrodes; and an organic insulating film provided on a region including at least a part of each of said electrodes, said insulating film being in the vicinity of said oxidized film and forming an exposed region of said oxidized film and a bonding region bonding to said oxidized film.
Claim 2
Dependent Claim
100 words
A base plate for an ink jet recording head provided with an electricity-heat convertor comprising: a substrate; a heat-generating resistor provided on said substrate; a pair of electrodes electrically connected to said heat-generating resistor; an oxidized film provided by local anodic oxidation of a surface of said heat-generating resistor between said electrodes; and an organic insulating film provided on a region including at least a part of each of said electrodes, said insulating film being in the vicinity of said oxidized film and forming an exposed region of said oxidized film and a bonding region bonding to said oxidized film.
Claim 3
Dependent Claim
29 words
A base plate for an ink jet recording head according to claim 1, wherein a heat accumulating layer is further provided between said substrate and said heat generating resistor.
Claim 4
Dependent Claim
27 words
A base plate for an ink jet recording head according to claim 1, wherein said organic insulating film is formed by use of a photosensitive polyimide resin.
Claim 5
Dependent Claim
24 words
A base plate for an ink jet recording head according to claim 1, wherein said electrodes are selected from Al, Mg, Ti and Ta.
Claim 6
Dependent Claim
122 words
An ink jet recording head provided with an orifice for discharging ink and an electricity-heat convertor for generating heat energy to be utilized for discharging the ink, said electricity-heat convertor comprising: a substrate; a heat-generating resistor provided on said substrate; a pair of electrodes electrically connected to said heat-generating resistor at a predetermined interval therebetween; an oxidized film provided by local anodic oxidation of a surface of said heat-generating resistor within the predetermined interval; and an organic insulating film provided on a region including at least a part of each of said electrodes, said insulating film being in the vicinity of said oxidized film and forming an exposed region of said oxidized film and a bonding region bonding to said oxidized film.
Claim 7
Dependent Claim
122 words
An ink jet recording head provided with an orifice for discharging ink and an electricity-heat convertor for generating heat energy to be utilized for discharging the ink, said electricity-heat convertor comprising: a substrate; a heat-generating resistor provided on said substrate; a pair of electrodes electrically connected to said heat-generating resistor at a predetermined interval therebetween; an oxidized film provided by local anodic oxidation of a surface of said heat-generating resistor within the predetermined interval; and an organic insulating film provided on a region including at least a part of each of said electrodes, said insulating film being in the vicinity of said oxidized film and forming an exposed region of said oxidized film and a bonding region bonding to said oxidized film.
Claim 8
Dependent Claim
25 words
An ink jet recording head according to claim 5, wherein a heat accumulating layer is further provided between said substrate and said heat generating resistor.
Claim 9
Dependent Claim
23 words
An ink jet recording head according to claim 5, wherein said organic insulating film is formed by use of a photosensitive polyimide resin.
Claim 10
Dependent Claim
20 words
An ink jet recording head according to claim 5, wherein said electrodes are selected from Al, Mg, Ti and Ta.
Claim 11
Dependent Claim
96 words
A base plate for an ink jet recording head provided with an electricity-heat convertor comprising: a substrate; a heat-generating resistor provided on said substrate; a pair of electrodes electrically connected to said heat-generating resistor at a predetermined interval therebetween; an oxidized film provided by anodic oxidation of a surface of said heat-generating resistor within the predetermined interval; and an organic insulating film provided on a region including at least a part of each of said electrodes, said insulating film being in the vicinity of said oxidized film and forming an exposed region of said oxidized film.
Claim 12
Dependent Claim
96 words
A base plate for an ink jet recording head provided with an electricity-heat convertor comprising: a substrate; a heat-generating resistor provided on said substrate; a pair of electrodes electrically connected to said heat-generating resistor at a predetermined interval therebetween; an oxidized film provided by anodic oxidation of a surface of said heat-generating resistor within the predetermined interval; and an organic insulating film provided on a region including at least a part of each of said electrodes, said insulating film being in the vicinity of said oxidized film and forming an exposed region of said oxidized film.
Claim 13
Dependent Claim
29 words
A base plate for an ink jet recording head according to claim 9, wherein a heat accumulating layer is further provided between said substrate and said heat generating resistor.
Claim 14
Dependent Claim
27 words
A base plate for an ink jet recording head according to claim 9, wherein said organic insulating film is formed by use of a photosensitive polyimide resin.
Claim 15
Dependent Claim
24 words
A base plate for an ink jet recording head according to claim 9, wherein said electrodes are selected from Al, Mg, Ti and Ta.
Claim 16
Dependent Claim
112 words
An ink jet recording head provided with an orifice for discharging ink and an electricity-heat convertor for generating heat energy to be utilized for discharging said ink, said electricity-heat convertor comprising: a substrate; a heat-generating resistor provided on said substrate; a pair of electrodes electrically connected to said heat-generating resistor at a predetermined interval therebetween; an oxidized film provided by anodic oxidation of a surface of said heat-generating resistor within the predetermined interval; and an organic insulating film provided on a region including at least a part of each of said electrodes, said insulating film being in the vicinity of said oxidized film and forming an exposed region of said oxidized film.
Claim 17
Dependent Claim
112 words
An ink jet recording head provided with an orifice for discharging ink and an electricity-heat convertor for generating heat energy to be utilized for discharging said ink, said electricity-heat convertor comprising: a substrate; a heat-generating resistor provided on said substrate; a pair of electrodes electrically connected to said heat-generating resistor at a predetermined interval therebetween; an oxidized film provided by anodic oxidation of a surface of said heat-generating resistor within the predetermined interval; and an organic insulating film provided on a region including at least a part of each of said electrodes, said insulating film being in the vicinity of said oxidized film and forming an exposed region of said oxidized film.
Claim 18
Dependent Claim
25 words
An ink jet recording head according to claim 13, wherein a heat accumulating layer is further provided between said substrate and said heat generating resistor.
Claim 19
Dependent Claim
23 words
An ink jet recording head according to claim 13, wherein said organic insulating film is formed by use of a photosensitive polyimide resin.
Claim 20
Dependent Claim
20 words
An ink jet recording head according to claim 13, wherein said electrodes are selected from Al, Mg, Ti and Ta.
Claim 21
Dependent Claim
102 words
A base plate for an ink jet recording head provided with an electricity-heat convertor comprising: a substrate; a heat-generating resistor provided on said substrate; a pair of electrodes electrically connected to said heat-generating resistor at a predetermined interval therebetween; an oxidized film provided by anodic oxidation of the surfaces of said electrodes and a surface of said heat-generating resistor within the predetermined interval; and an organic insulating film provided on a region including at least a part of each of said electrodes, said insulating film being in the vicinity of said oxidized film and forming an exposed region of said oxidized film.
Claim 22
Dependent Claim
102 words
A base plate for an ink jet recording head provided with an electricity-heat convertor comprising: a substrate; a heat-generating resistor provided on said substrate; a pair of electrodes electrically connected to said heat-generating resistor at a predetermined interval therebetween; an oxidized film provided by anodic oxidation of the surfaces of said electrodes and a surface of said heat-generating resistor within the predetermined interval; and an organic insulating film provided on a region including at least a part of each of said electrodes, said insulating film being in the vicinity of said oxidized film and forming an exposed region of said oxidized film.
Claim 23
Dependent Claim
29 words
A base plate for an ink jet recording head according to claim 17, wherein a heat accumulating layer is further provided between said substrate and said heat generating resistor.
Claim 24
Dependent Claim
27 words
A base plate for an ink jet recording head according to claim 17, wherein said organic insulating film is formed by use of a photosensitive polyimide resin.
Claim 25
Dependent Claim
24 words
A base plate for an ink jet recording head according to claim 17, wherein said electrodes are selected from Al, Mg, Ti and Ta.
Claim 26
Dependent Claim
117 words
An ink jet recording head provided with an orifice for discharging ink and an electricity-heat convertor for generating heat energy to be utilized for discharging said ink, said electricity-heat convertor comprising: a substrate; a heat-generating resistor provided on said substrate; a pair of electrodes electrically connected to said heat-generating resistor at a predetermined interval therebetween; an oxidized film provided by anodic oxidation of surfaces of said electrodes and a surface of said heat-generating resistor within the predetermined interval; and an organic insulating film provided on a region including at least a part of each of said electrodes, said insulating film being in the vicinity of said oxidized film and forming an exposed region of said oxidized film.
Claim 27
Dependent Claim
117 words
An ink jet recording head provided with an orifice for discharging ink and an electricity-heat convertor for generating heat energy to be utilized for discharging said ink, said electricity-heat convertor comprising: a substrate; a heat-generating resistor provided on said substrate; a pair of electrodes electrically connected to said heat-generating resistor at a predetermined interval therebetween; an oxidized film provided by anodic oxidation of surfaces of said electrodes and a surface of said heat-generating resistor within the predetermined interval; and an organic insulating film provided on a region including at least a part of each of said electrodes, said insulating film being in the vicinity of said oxidized film and forming an exposed region of said oxidized film.
Claim 28
Dependent Claim
25 words
An ink jet recording head according to claim 21, wherein a heat accumulating layer is further provided between said substrate and said heat generating resistor.
Claim 29
Dependent Claim
23 words
An ink jet recording head according to claim 21, wherein said organic insulating film is formed by use of a photosensitive polyimide resin.
Claim 30
Dependent Claim
20 words
An ink jet recording head according to claim 21, wherein said electrodes are selected from Al, Mg, Ti and Ta.
Claim 31
Dependent Claim
29 words
A base plate for an ink jet recording head according to claim 1, wherein said heat-generating resistor is formed of a material selected from Al, Mg, Ti and Ta.
Claim 32
Dependent Claim
25 words
An ink jet recording heat according to claim 5, wherein said heat-generating resistor is formed of a material selected for Al, Mg, Ti and Ta.
Claim 33
Dependent Claim
29 words
A base plate for an ink jet recording head according to claim 9, wherein said heat-generating resistor is formed of a material selected from Al, Mg, Ti and Ta.
Claim 34
Dependent Claim
25 words
An ink jet recording head according to claim 13, wherein said heat-generating resistor is formed of a material selected from Al, Mg, Ti and Ta.
Claim 35
Dependent Claim
29 words
A base plate for an ink jet recording head according to claim 17, wherein said heat-generating resistor is formed of a material selected from Al, Mg, Ti and Ta.
Claim 36
Dependent Claim
25 words
An ink jet recording head according to claim 21, wherein said heat-generating resistor is formed of a material selected from Al, Mg, Ti and Ta.
Claim 37
Dependent Claim
68 words
A base plate for an ink jet recording head having an electrothermal transducer comprising: a first surface region formed of an oxidized film by anodic oxidation at a position corresponding to a heat-generating region of said electrothermal transducer; and a second surface region formed of an organic insulating film, said second surface region being continuous with said first surface region through an integral connection with said oxidized film.
Claim 38
Dependent Claim
68 words
A base plate for an ink jet recording head having an electrothermal transducer comprising: a first surface region formed of an oxidized film by anodic oxidation at a position corresponding to a heat-generating region of said electrothermal transducer; and a second surface region formed of an organic insulating film, said second surface region being continuous with said first surface region through an integral connection with said oxidized film.
Claim 39
Dependent Claim
42 words
A base plate according to claim 31, wherein said organic insulating film is provided to cover an area ranging from a peripheral portion on said anodic oxidated film to said electrode along a boundary portion between said electrode and said heat-generating resistor.
Claim 40
Dependent Claim
55 words
A base plate according to claim 31, wherein said organic insulating film is provided to cover an area ranging from a peripheral portion on a side of said electrode of said anodic oxidated film to at least a part of each of said electrodes along a boundary portion between said electrode and said heat-generating resistor.
Claim 41
Dependent Claim
101 words
An ink jet recording head having a space for housing ink and a base plate for an ink jet recording head having an electrothermal transducer comprising: a first surface region formed of an oxidized film by anodic oxidation at a position corresponding to the heat generating region of said electrothermal transducer; and a second surface region formed of an organic insulating film, said second surface region being continuous with said first surface region through an integral connection with said oxidized film, said first surface region and said second surface region forming an inside wall surface of said space for housing ink.
Claim 42
Dependent Claim
101 words
An ink jet recording head having a space for housing ink and a base plate for an ink jet recording head having an electrothermal transducer comprising: a first surface region formed of an oxidized film by anodic oxidation at a position corresponding to the heat generating region of said electrothermal transducer; and a second surface region formed of an organic insulating film, said second surface region being continuous with said first surface region through an integral connection with said oxidized film, said first surface region and said second surface region forming an inside wall surface of said space for housing ink.
Claim 43
Dependent Claim
168 words
An ink jet recording apparatus having an ink jet recording head for effecting recording by driving an electrothermal transducer in response to a recording signal to cause thermal energy to discharge ink from an orifice, thereby emitting ink onto a recording medium, said ink jet recording head comprising: a liquid chamber; a liquid path communicating with said liquid chamber; a base plate for said ink jet recording head including said electrothermal transducer, a pair of electrodes receiving a recording signal and a heat-generating resistor defined by said pair of electrodes, said base plate further comprising a first surface region formed of an oxidized film by anodic oxidation at a position corresponding to a heat-generating region of said electrothermal transducer, and a second surface region formed of an organic insulating film, said second surface region being continuous with said first surface region through an integral connection with said oxidized film, and said first surface region and second surface region forming part of an inner wall of said liquid path.
Claim 44
Dependent Claim
168 words
An ink jet recording apparatus having an ink jet recording head for effecting recording by driving an electrothermal transducer in response to a recording signal to cause thermal energy to discharge ink from an orifice, thereby emitting ink onto a recording medium, said ink jet recording head comprising: a liquid chamber; a liquid path communicating with said liquid chamber; a base plate for said ink jet recording head including said electrothermal transducer, a pair of electrodes receiving a recording signal and a heat-generating resistor defined by said pair of electrodes, said base plate further comprising a first surface region formed of an oxidized film by anodic oxidation at a position corresponding to a heat-generating region of said electrothermal transducer, and a second surface region formed of an organic insulating film, said second surface region being continuous with said first surface region through an integral connection with said oxidized film, and said first surface region and second surface region forming part of an inner wall of said liquid path.
Claim 45
Dependent Claim
44 words
An ink jet recording apparatus according to claim 35, wherein said organic insulating film is provided to cover an area ranging from a peripheral portion on said anodic oxidated film to said electrode along a boundary portion between said electrode and said heat-generating resistor.
Claim 46
Dependent Claim
57 words
An ink jet recording apparatus according to claim 35, wherein said organic insulating film is provided to cover an area ranging from a peripheral portion on a side of said electrode of said anodic oxidated film to at least a part of each of said electrodes along a boundary portion between said electrode and said heat-generating resistor.
Claim 47
Dependent Claim
32 words
An ink jet recording apparatus according to claim 35, wherein said ink jet recording head has a driving voltage 1.2 times a foaming voltage and with a pulse width of 2 μsec.
Claim 48
Dependent Claim
25 words
An ink jet recording apparatus according to claim 35, wherein said heat-generating resistor is formed of a material selected from Al, Mg, Ti and Ta.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1992-08-21 | 1993-02-20 | 1993-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-21 | 1997-02-20 | 1997-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-21 | 2001-02-20 | 2001-08-22 | $7700.00 | Window Closed / Lapsed |