US4368413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording apparatus
Assignee: Canon Inc
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Filing: 1980-09-30
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Granted: 1983-01-11
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Expires: 2000-09-30
Abstract
Abstract There is a recording apparatus utilizing a linear motor in which a movable carriage is provided with a detector for detecting its speed and position while the apparatus itself is provided with a detector for detecting the initial position of the carriage.
Inventors
- 👤 Shigemitsu Tazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:20
CPC Classifications
B; B41; B41J; B41J25/00; B41J25/001; B41J25/006; B41J19/00; B41J19/18; B41J19/20; B41J19/202; B41J19/30; B41J19/305
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
180 words
A recording apparatus comprising: a carriage having a recording head mounted thereon; a motor for moving said carriage reciprocally in a recording direction, and at the predetermined rate in a return direction; first detecting means for detecting the presence and absence of recording information and for coveying the recording information to said recording head; second detecting means for detecting when said carriage is in a home position area; protection means disposed adjacent to the home position area of said carriage for protecting said recording head; and drive means, which operates upon detection by said second detecting means of the return of said carriage to the home position area, for driving said motor in said recording direction to continue recording of information when said first detecting means detects the presence of information to be recorded, and for continuing the return drive of said motor at a rate less than said predetermined rate when said first detecting means detects the absence of information to be recorded, thereby placing said carriage at a position where said recording head thereon contacts said protection means.
Claim 2
Dependent Claim
180 words
A recording apparatus comprising: a carriage having a recording head mounted thereon; a motor for moving said carriage reciprocally in a recording direction, and at the predetermined rate in a return direction; first detecting means for detecting the presence and absence of recording information and for coveying the recording information to said recording head; second detecting means for detecting when said carriage is in a home position area; protection means disposed adjacent to the home position area of said carriage for protecting said recording head; and drive means, which operates upon detection by said second detecting means of the return of said carriage to the home position area, for driving said motor in said recording direction to continue recording of information when said first detecting means detects the presence of information to be recorded, and for continuing the return drive of said motor at a rate less than said predetermined rate when said first detecting means detects the absence of information to be recorded, thereby placing said carriage at a position where said recording head thereon contacts said protection means.
Claim 3
Dependent Claim
26 words
A recording apparatus according to claim 1, wherein said recording head comprises an ink jet nozzle, and wherein said carriage comprises an ink tank mounted thereon.
Claim 4
Dependent Claim
14 words
A recording apparatus according to claim 1, wherein said motor comprises a linear motor.
Claim 5
Dependent Claim
30 words
A recording apparatus according to claim 2, wherein said carriage is adapted to softly come into contact with a damper to prohibit bubbles from being generated within said ink tank.
Claim 6
Dependent Claim
64 words
A recording apparatus according to claim 3, wherein said linear motor comprises an elongated permanent magnet arranged perpendicular to an advancing direction of a recording paper, a slit plate of non-magnetic material arranged in parallel with said permanent magnet, and light emitting and receiving element mounted on said carriage for detecting a position of said carriage in cooperation with slits of said slit plate.
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) | 1986-01-10 | 1986-07-12 | 1987-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-10 | 1990-07-12 | 1991-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-10 | 1994-07-12 | 1995-01-11 | $7700.00 | Window Closed / Lapsed |