US4499478A
Expired / Lapsed
US
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Ink jet recording apparatus
Assignee: Canon Inc
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Filing: 1981-12-28
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Granted: 1985-02-12
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Expires: 2001-12-28
Abstract
Abstract An ink jet recording apparatus comprises an ink jet head section constructed with a plurality of pre-divided, discrete ink jet heads, a drive control section and a wiring section, and a common supporting member, on which these ink jet head section, drive control section, and wiring section are disposed and electrically connected each other.
Inventors
- 👤 Yohji Matsufuji
- 👤 Shigeo Togano
- 👤 Hiroo Ichihashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:23
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/145; B41J2/155
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
156 words
Ink jet recording apparatus comprising: a head unit of the cassette type comprising a plurality of ink jet head sections of which each comprises a multi-array orifice ink jet head for effecting recording at a predetermined position and a drive control element for driving the associated ink jet head to project a liquid droplet on demand from at least one orifice thereof; common multiplex wiring means for supplying electric signals to each of said drive control elements; a reservoir for storing liquid to be fed to said head unit of the cassette type; and a common supporting member supporting said head unit of the cassette type, said common multiplex wiring means and said reservoir, each of said ink jet heads and each of said drive control element being removably fixed on said common supporting member in such a manner as to be removable therefrom independently of the other said ink jet heads and drive control elements.
Claim 2
Dependent Claim
156 words
Ink jet recording apparatus comprising: a head unit of the cassette type comprising a plurality of ink jet head sections of which each comprises a multi-array orifice ink jet head for effecting recording at a predetermined position and a drive control element for driving the associated ink jet head to project a liquid droplet on demand from at least one orifice thereof; common multiplex wiring means for supplying electric signals to each of said drive control elements; a reservoir for storing liquid to be fed to said head unit of the cassette type; and a common supporting member supporting said head unit of the cassette type, said common multiplex wiring means and said reservoir, each of said ink jet heads and each of said drive control element being removably fixed on said common supporting member in such a manner as to be removable therefrom independently of the other said ink jet heads and drive control elements.
Claim 3
Dependent Claim
31 words
The ink jet recording apparatus as set forth in claim 1, wherein said ink jet head section, drive control section, and wiring section are detachably mounted onto said common supporting member.
Claim 4
Dependent Claim
28 words
The ink jet recording apparatus as set forth in claim 1, wherein said ink jet head section has a plurality of ink discharging orifices in a predetermined arrangement.
Claim 5
Dependent Claim
30 words
The ink jet recording apparatus as set forth in claim 1, wherein said head unit of the cassette type comprises electrode leads which are connected to said drive control elements.
Claim 6
Dependent Claim
26 words
The ink jet recording apparatus as set forth in claim 1, wherein said head unit of the cassette type and wiring section are connected in series.
Claim 7
Dependent Claim
24 words
The ink jet recording apparatus as set forth in claim 4, wherein a part of said electrode leads consists of a flexible printed plate.
Claim 8
Dependent Claim
109 words
Ink jet recording apparatus which comprises: a head unit of the cassette type comprising a plurality of ink jet head units each of which comprises a multi-array orifice ink jet head for effecting recording at a predetermined position and a drive control element for driving said ink jet head to project a liquid droplet on demand from at least one orifice thereof; common multiplex wiring means for supplying electric signals to each drive control element; and electrode leads through which said wiring means is electrically connected to said head unit, wherein said electrode leads and corresponding ones of said drive control elements are connected by means of pressure contact.
Claim 9
Dependent Claim
109 words
Ink jet recording apparatus which comprises: a head unit of the cassette type comprising a plurality of ink jet head units each of which comprises a multi-array orifice ink jet head for effecting recording at a predetermined position and a drive control element for driving said ink jet head to project a liquid droplet on demand from at least one orifice thereof; common multiplex wiring means for supplying electric signals to each drive control element; and electrode leads through which said wiring means is electrically connected to said head unit, wherein said electrode leads and corresponding ones of said drive control elements are connected by means of pressure contact.
Claim 10
Dependent Claim
37 words
The ink jet recording apparatus as set forth in claim 7, wherein said head unit of the cassette type includes said electrode leads and at least a part of said electrode leads comprise a flexible printed plate.
Claim 11
Dependent Claim
37 words
The ink jet recording apparatus as set forth in claim 1, further comprising a common supporting member, and wherein said head unit of the cassette type and said wiring means are arranged on said common supporting member.
Claim 12
Dependent Claim
29 words
The ink jet recording apparatus as set forth in claim 7, wherein said electrode leads and drive control elements engage each other in a freely attachable and detachable manner.
Claim 13
Dependent Claim
23 words
The ink jet recording apparatus as set forth in claim 7, wherein said drive control elements and wiring means are connected by bonding.
Claim 14
Dependent Claim
27 words
The ink jet recording apparatus as set forth in claim 7, wherein said ink jet head has a plurality of ink discharge orifices in a predetermined arrangement.
Claim 15
Dependent Claim
27 words
The ink jet recording apparatus as set forth in claim 7, wherein said head unit of the cassette type and said wiring means are connected in series.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-12 | 1988-08-13 | 1989-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-12 | 1992-08-13 | 1993-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-12 | 1996-08-13 | 1997-02-12 | $7700.00 | Window Closed / Lapsed |