US5162818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink jet recording head having a window for observation of electrical connection
Assignee: Canon Inc
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Filing: 1990-09-17
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Granted: 1992-11-10
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Expires: 2010-09-17
Abstract
Abstract An ink jet apparatus includes an ink jet recording head having a housing, an ink container in the housing for containing ink, ejection outlets for ejecting the ink supplied from the ink container, and energy generating elements for generating energy contributable to the ejection of the ink through the ejection outlets, the housing being provided with a cavity. The ink jet recording head further comprises electric contacts for supplying the energy, the contacts being provided on a wall defining the cavity and a carriage on which the ink jet recording head is mounted, the carriage being provided with a contact member having electric contacts for electric coupling with the aforementioned contacts. The ink jet recording head is mounted on the carriage with the contact member being in the cavity. The housing is provided with a window extending from a cavity to permit observation of the contact member.
Inventors
- 👤 Seiichiro Karita
- 👤 Hideo Saikawa
- 👤 Hiroshi Sugitani
- 👤 Yoshifumi Hattori
- 👤 Masami Ikeda
- 👤 Asao Saito
- 👤 Kazuaki Masuda
- 👤 Akio Saito
- 👤 Tsuyoshi Orikasa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:07
CPC Classifications
B; B41; B41J; B41J25/00; B41J25/34
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
181 words
An ink jet apparatus comprising: an ink jet recording head having a housing, an ink container in said housing for containing ink, ejection outlets for ejecting the ink supplied from said ink container, energy generating means for generating energy for ejection of the ink through said ejection outlets, said housing being provided with a cavity having an opening, said ink jet recording head further comprising a first set of electric contacts for supplying the energy to said energy generating means, said first set of electric contacts being provided on a wall defining said cavity, the wall not facing the opening; a carriage on which said ink jet recording head is mounted, said carriage being provided with a contact member having a second set of electric contacts for electric coupling with said first set of electric contacts, said ink jet recording head being mounted on said carriage with the contact member being inserted in said cavity; wherein said housing is provided with a window extending from the cavity to permit observation of contact between said first and second sets of electric contacts.
Claim 2
Dependent Claim
181 words
An ink jet apparatus comprising: an ink jet recording head having a housing, an ink container in said housing for containing ink, ejection outlets for ejecting the ink supplied from said ink container, energy generating means for generating energy for ejection of the ink through said ejection outlets, said housing being provided with a cavity having an opening, said ink jet recording head further comprising a first set of electric contacts for supplying the energy to said energy generating means, said first set of electric contacts being provided on a wall defining said cavity, the wall not facing the opening; a carriage on which said ink jet recording head is mounted, said carriage being provided with a contact member having a second set of electric contacts for electric coupling with said first set of electric contacts, said ink jet recording head being mounted on said carriage with the contact member being inserted in said cavity; wherein said housing is provided with a window extending from the cavity to permit observation of contact between said first and second sets of electric contacts.
Claim 3
Dependent Claim
19 words
An apparatus according to claim 1, wherein said energy generating means includes electrothermal transducer means for generating thermal energy.
Claim 4
Dependent Claim
35 words
An apparatus according to claim 1, wherein said window is in a form of a slit having a length larger than a range in which said first and second sets of electric contacts are arranged.
Claim 5
Dependent Claim
29 words
An apparatus according to claim 3, wherein said window extends to the vicinity of an ink ejecting portion of said ink jet recording head having said energy generating means.
Claim 6
Dependent Claim
17 words
An apparatus according to claim 1, wherein said window and said cavity are aligned with each other.
Claim 7
Dependent Claim
19 words
An apparatus according to claim 1, wherein a plurality of windows are provided in different walls defining said cavity.
Claim 8
Dependent Claim
14 words
An apparatus according to claim 1, wherein said window is covered with a screen.
Claim 9
Dependent Claim
46 words
An apparatus according to claim 1, wherein said window is in a form of a slit, and marks are provided adjacent longitudinally opposite ends of said window, and wherein said marks and at least a top surface of the contact member are of a same color.
Claim 10
Dependent Claim
13 words
An apparatus according to claim 8, when each of said marks is triangular.
Claim 11
Dependent Claim
25 words
An apparatus according to claim 8, wherein the color of said marks and at least the top surface of the contact member is relatively light.
Claim 12
Dependent Claim
34 words
An apparatus according to claim 8, wherein a color of said housing is substantially entirely black, and the color of said marks and at least the top surface of the contact member is yellow.
Claim 13
Dependent Claim
15 words
An apparatus according to claim 1, wherein said ink container contains an ink absorbing material.
Claim 14
Dependent Claim
131 words
An ink jet recording head, comprising: a housing; an ink container in said housing to contain ink; an ink outlet for ejecting ink from said ink container; energy generating means for generating energy for ejection of the ink through said ejection outlet; a cavity having an opening, said cavity formed in said housing to permit engagement of said ink jet recording head with an electric contact member of an external energy source; a set of electric contacts provided within said cavity on a wall defining aid cavity, the wall not facing the opening on said cavity, the electric contacts being electrically coupled with said energy generating means; and a window extending from said cavity for permitting observation of electric contact between said set of electric contacts and the electric contact member.
Claim 15
Dependent Claim
131 words
An ink jet recording head, comprising: a housing; an ink container in said housing to contain ink; an ink outlet for ejecting ink from said ink container; energy generating means for generating energy for ejection of the ink through said ejection outlet; a cavity having an opening, said cavity formed in said housing to permit engagement of said ink jet recording head with an electric contact member of an external energy source; a set of electric contacts provided within said cavity on a wall defining aid cavity, the wall not facing the opening on said cavity, the electric contacts being electrically coupled with said energy generating means; and a window extending from said cavity for permitting observation of electric contact between said set of electric contacts and the electric contact member.
Claim 16
Dependent Claim
22 words
An ink jet recording head according to claim 13, wherein said energy generating means includes electrothermal transducer means for generating thermal energy.
Claim 17
Dependent Claim
34 words
An ink recording head according to claim 13, wherein said window is in a form of a slit having a length larger than a range in which said set of electric contacts are arranged.
Claim 18
Dependent Claim
32 words
An ink jet recording head according o claim 15, wherein said window extends to the vicinity of an ink ejecting portion of said ink jet recording head having said energy generating means.
Claim 19
Dependent Claim
20 words
An ink jet recording head according to claim 14, wherein said window and said cavity are aligned with each other.
Claim 20
Dependent Claim
22 words
An ink jet recording head according to claim 13, wherein a plurality of windows are provided in different walls defining said cavity.
Claim 21
Dependent Claim
17 words
An ink jet recording head according to claim 13, wherein said window is covered with a screen.
Claim 22
Dependent Claim
29 words
An ink jet recording head according to claim 13, wherein window is in a form of a slit, and marks are provided adjacent longitudinally opposite ends of said window.
Claim 23
Dependent Claim
16 words
An ink jet recording head according to claim 20, wherein each of said marks is triangular.
Claim 24
Dependent Claim
18 words
An ink jet recording head according to claim 20, wherein a color of said marks is relatively light.
Claim 25
Dependent Claim
32 words
An ink jet recording head according to claim 20, wherein a color of said housing is substantially entirely black, and a color of aid marks and the electric contact member is yellow.
Claim 26
Dependent Claim
18 words
An ink jet recording head according to claim 13, wherein said ink container contains an ink absorbing material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-11-10 | 1996-05-11 | 1996-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-10 | 2000-05-11 | 2000-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-10 | 2004-05-11 | 2004-11-10 | $7700.00 | Window Closed / Lapsed |