US5189443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording head having stress-minimizing construction
Assignee: Canon Inc
•
Filing: 1992-06-29
•
Granted: 1993-02-23
•
Expires: 2012-06-29
Abstract
Abstract An ink jet cartridge includes a top plate having an orifice plate in which ejection outlets for permitting ejection of ink are formed and a portion for defining ink passages communicating with the ink ejection outlets, a heater board joined with the top plate to define the ink passage, a thin plate having a connecting region for pressing and fixing the orifice plate to the heater board, and an ink container for containing the ink to be supplied to the ink passages, wherein the thin plate is connected with the orifice plate on at least one of four sides of the orifice plate.
Inventors
- 👤 Teruo Arashima
- 👤 Makiko Kimura
- 👤 Toshio Kashino
- 👤 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
2026-11-07 14:00
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/175; B41J2/17503; B41J2/1752; B41J2/135; B41J2/14; B41J2/14016; B41J2/14024; B41J2/1433; B41J2/16; B41J2/1601; B41J2/1604; B41J2/1621; B41J2/1623; B41J2/1637
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
113 words
A recording head comprising: a first member having an integral orifice plate portion having a line of ink discharge outlets through which ink is discharged, and a base plate portion having grooves communicating with said discharge outlets; a second member joined with said first member to form passages for the ink and having electrothermal transducers for generating thermal energy contributable to discharge of the ink; and a thin plate member defining a through-opening having a periphery for exposing the discharge outlets and externally urging said orifice plate portion against said second member at an end remote from said base plate portion, said thin plate member extending along said line of ink discharge outlets.
Claim 2
Dependent Claim
113 words
A recording head comprising: a first member having an integral orifice plate portion having a line of ink discharge outlets through which ink is discharged, and a base plate portion having grooves communicating with said discharge outlets; a second member joined with said first member to form passages for the ink and having electrothermal transducers for generating thermal energy contributable to discharge of the ink; and a thin plate member defining a through-opening having a periphery for exposing the discharge outlets and externally urging said orifice plate portion against said second member at an end remote from said base plate portion, said thin plate member extending along said line of ink discharge outlets.
Claim 3
Dependent Claim
129 words
An ink jet recording apparatus comprising: a recording head including: a first member having an integral orifice plate portion having a line of ink discharge outlets through which ink is discharged, and a base plate portion having grooves communicating with said discharge outlets, a second member joined with said first member to form passages for the ink and having electrothermal transducers for generating thermal energy contributable to discharge of the ink, and a thin plate member defining a through-opening having a periphery for exposing the discharge outlets and externally urging said orifice plate portion against said second member at an end remote from said base plate portion, said thin plate member extending along said line of ink discharge outlets; and a reciprocably movable carriage for mounting said recording head.
Claim 4
Dependent Claim
129 words
An ink jet recording apparatus comprising: a recording head including: a first member having an integral orifice plate portion having a line of ink discharge outlets through which ink is discharged, and a base plate portion having grooves communicating with said discharge outlets, a second member joined with said first member to form passages for the ink and having electrothermal transducers for generating thermal energy contributable to discharge of the ink, and a thin plate member defining a through-opening having a periphery for exposing the discharge outlets and externally urging said orifice plate portion against said second member at an end remote from said base plate portion, said thin plate member extending along said line of ink discharge outlets; and a reciprocably movable carriage for mounting said recording head.
Claim 5
Dependent Claim
131 words
An ink jet recording apparatus comprising: a recording head including: a first member having an integral orifice plate portion having a line of ink discharge outlets through which ink is discharged, and a base plate portion having grooves communicating with said discharge outlets, a second member joined with said first member to form passages for the ink and having electrothermal transducers for generating thermal energy contributable to discharge of the ink, and a thin plate member defining a through-opening having a periphery for exposing the discharge outlets and externally urging said orifice plate portion against said second member at an end remote from said base plate portion, said thin plate member extending along said line of ink discharge outlets; and capping means for capping the discharge outlets of said recording head.
Claim 6
Dependent Claim
131 words
An ink jet recording apparatus comprising: a recording head including: a first member having an integral orifice plate portion having a line of ink discharge outlets through which ink is discharged, and a base plate portion having grooves communicating with said discharge outlets, a second member joined with said first member to form passages for the ink and having electrothermal transducers for generating thermal energy contributable to discharge of the ink, and a thin plate member defining a through-opening having a periphery for exposing the discharge outlets and externally urging said orifice plate portion against said second member at an end remote from said base plate portion, said thin plate member extending along said line of ink discharge outlets; and capping means for capping the discharge outlets of said recording head.
Claim 7
Dependent Claim
132 words
An ink cartridge comprising: a recording head including: a first member having an integral orifice plate portion having a line of ink discharge outlets through which ink is discharged, and a base plate portion having grooves communicating with said discharge outlets, a second member joined with said first member to form passages for the ink and having electrothermal transducers for generating thermal energy contributable to discharge of the ink, and a thin plate member defining a through-opening having a periphery for exposing the discharge outlets and externally urging said orifice plate portion against said second member at an end remote from said base plate portion, said thin plate member extending along said line of ink discharge outlets; and an ink container connected with the passages formed by said first and second member.
Claim 8
Dependent Claim
132 words
An ink cartridge comprising: a recording head including: a first member having an integral orifice plate portion having a line of ink discharge outlets through which ink is discharged, and a base plate portion having grooves communicating with said discharge outlets, a second member joined with said first member to form passages for the ink and having electrothermal transducers for generating thermal energy contributable to discharge of the ink, and a thin plate member defining a through-opening having a periphery for exposing the discharge outlets and externally urging said orifice plate portion against said second member at an end remote from said base plate portion, said thin plate member extending along said line of ink discharge outlets; and an ink container connected with the passages formed by said first and second member.
Claim 9
Dependent Claim
26 words
A recording head according to claim 1, wherein said thin plate member encloses said line of ink discharge outlets along three sides of said first member.
References Cited (Backward Citations)
JPS55121081A
Cited
US4533927A
Cited
US4599528A
Cited
US4599628A
Cited
DE3438033A1
Cited
US4725851A
Cited
US4967204A
Cited
US4768266A
Cited
US4779099A
Cited
US4962391A
Cited
JPH0248009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-02-23 | 1996-08-24 | 1997-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-23 | 2000-08-24 | 2001-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-23 | 2004-08-24 | 2005-02-23 | $7700.00 | Window Closed / Lapsed |