US3837460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-speed driving device for printer or the like
Assignee: Seikosha KK
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Filing: 1973-02-07
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Granted: 1974-09-24
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Expires: 1993-02-07
Abstract
Abstract A high-speed driving device for use in a high-speed printer or the like. The printer has actuatable printing elements each actuated from a rest position to a printing position. The highspeed driving device actuates each printing element with a plurality of actuators each comprising an electromagnetic system having a driving or operating electrical coil receptive of current pulses for developing opposite polarities in its core in conjunction with pole pieces forming a magnetic field for rocking to an operative position and to an inoperative rest position the core having a pole varied thereon and extending into a gap between the pole pieces. The core is constructed with a multiplicity of extensions or lever arms, one of which is normal to the core portion within the coil and engages a corresponding actuatable element to actuate it to its operative position when the core is rocked. The core is restored to its rest position by application to the operating coil of current of opposite polarity to the current actuating it to its operative position. A spring restores each actuatable printing element to its rest position in readiness for a next printing step. Each core is rockably mounted in a carriage for travel relative the actuation elements so that high-speed printing can be carried out.
Inventors
- 👤 Y Chida
- 👤 N Sawada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:08
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/22; B41J2/23; B41J2/27; B41J2/275
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
219 words
A high-speed driving device for high-speed printers and the like comprising, means forming a flux path having opposite polarity poles and an air gap therebetween, a rockable lever rockably mounted having a first lever arm made of magnetic material extending into said air gap and a second lever arm at an angle relative to the first lever arm and actuated thereby from a rest position to an operative position for impacting an actuatable element and restored to said rest position, means to actuate said first lever arm thereby to actuate said second lever arm comprising an operating coil stationary relative to said rockable lever for varying said first lever arm fro one polarity to another to effect attraction alternately by said poles of opposite polarity to rock said rockable lever from a rest position to an operative position and restore it to a rest position thereof, means rockably mounting said rockable lever, means to apply current pulses serially to said operating coil to effect said rocking, means to apply said current pulses to said operating coil, an actuatable element disposed freely movable independently of said second lever arm and normally biased to a rest position in which said second lever arm impacts it to actuate said actuatable element, and means biasing the actuatable element to said rest position thereof.
Claim 2
Dependent Claim
219 words
A high-speed driving device for high-speed printers and the like comprising, means forming a flux path having opposite polarity poles and an air gap therebetween, a rockable lever rockably mounted having a first lever arm made of magnetic material extending into said air gap and a second lever arm at an angle relative to the first lever arm and actuated thereby from a rest position to an operative position for impacting an actuatable element and restored to said rest position, means to actuate said first lever arm thereby to actuate said second lever arm comprising an operating coil stationary relative to said rockable lever for varying said first lever arm fro one polarity to another to effect attraction alternately by said poles of opposite polarity to rock said rockable lever from a rest position to an operative position and restore it to a rest position thereof, means rockably mounting said rockable lever, means to apply current pulses serially to said operating coil to effect said rocking, means to apply said current pulses to said operating coil, an actuatable element disposed freely movable independently of said second lever arm and normally biased to a rest position in which said second lever arm impacts it to actuate said actuatable element, and means biasing the actuatable element to said rest position thereof.
Claim 3
Dependent Claim
26 words
A high-speed driving device for high-speed printers and the like according to claim 1, in which first lever arm comprises a core in said operating coil.
Claim 4
Dependent Claim
40 words
A high-speed driving device for high-speed printers and the like according to claim 2, including a travelling carriage mounting said lever and said coil for moving them selectively to a plurality of discrete positions, and means to move the carriage.
Claim 5
Dependent Claim
247 words
A high-speed driving device for high-speed printers and the like comprising, means defining a magnetic circuit having two poles of opposite polarity and an air gap therebetween, a plurality of actuators comprising rockable levers each having a first lever arm made of magnetic material extending into said air gap, each rockable lever having a second lever arm at an angle relative to the first lever arm, means for said actuators to actuate said rockable levers comprising operating coils corresponding in number to the number of rockable levers and stationary relative to said rockable levers, each operating coil having said first lever arm of a corresponding rockable lever extending therethrough as a core, means to apply series current pulses to the operating coils to vary the magnetic polarity of the individual cores to different polarities for repulsion and attraction by the two poles between which each is disposed for actuation from a rest position to an operative position and restoring thereof to said rest position, means to apply said current pulses to said coils, whereby said second lever arm is rocked from a rest position to an operative position for impacting a member operable thereby, a plurality of actuatable elements disposed freely movable independently of said actuators, said actuatable elements corresponding in number to the individual second lever arms of said rockable levers, means biasing the actuatable elements individually to a respective rest position at which said actuatable elements are impacted individually by a corresponding second lever arm.
Claim 6
Dependent Claim
247 words
A high-speed driving device for high-speed printers and the like comprising, means defining a magnetic circuit having two poles of opposite polarity and an air gap therebetween, a plurality of actuators comprising rockable levers each having a first lever arm made of magnetic material extending into said air gap, each rockable lever having a second lever arm at an angle relative to the first lever arm, means for said actuators to actuate said rockable levers comprising operating coils corresponding in number to the number of rockable levers and stationary relative to said rockable levers, each operating coil having said first lever arm of a corresponding rockable lever extending therethrough as a core, means to apply series current pulses to the operating coils to vary the magnetic polarity of the individual cores to different polarities for repulsion and attraction by the two poles between which each is disposed for actuation from a rest position to an operative position and restoring thereof to said rest position, means to apply said current pulses to said coils, whereby said second lever arm is rocked from a rest position to an operative position for impacting a member operable thereby, a plurality of actuatable elements disposed freely movable independently of said actuators, said actuatable elements corresponding in number to the individual second lever arms of said rockable levers, means biasing the actuatable elements individually to a respective rest position at which said actuatable elements are impacted individually by a corresponding second lever arm.
Claim 7
Dependent Claim
51 words
A high-speed driving device for high-speed printers and the like according to claim 4, in which said means defining said flux path comprises a pair of elongated pole pieces defining said air gap as an elongated air gap, each of the first lever arms being disposed sequentially in said air gap.
Claim 8
Dependent Claim
60 words
A high-speed driving device for high-speed printers and the like according to claim 5, in which each of said rockable levers comprises a third lever arm made of magnetic material extending toward said pole pieces and having a polarity opposite to a pole piece next to which it is adjacent thereby to magnify the impacting of said second lever arm.
Claim 9
Dependent Claim
193 words
A high-speed printer comprising, a plurality of actuatable printing devices freely movable independently and operable from a rest position to an operative position for effecting printing, a plurality of actuators for impacting the actuatable printing devices individually for actuating them comprising, means defining pole pieces defining an air gap between two poles of opposite polarities, a plurality of rockable levers each having a lever arm of magnetic material extending into said air gap and a second lever arm at an angle relative to the first lever arm for impacting the printing devices, a plurality of operating coils stationary relative to the corresponding actuators and each having the first arm of a corresponding lever arm extending therethrough as a core, means for energizing the operating coils selectively for developing different polarities in the individual cores thereby to rock the rockable lever arms from a rest position to a position for impacting the printing devices and to return them to said rest position, and biasing means to restore the printing devices to a corresponding rest position after impaction thereof for printing and after the restoration of said rockable lever arms to said rest position thereof.
Claim 10
Dependent Claim
193 words
A high-speed printer comprising, a plurality of actuatable printing devices freely movable independently and operable from a rest position to an operative position for effecting printing, a plurality of actuators for impacting the actuatable printing devices individually for actuating them comprising, means defining pole pieces defining an air gap between two poles of opposite polarities, a plurality of rockable levers each having a lever arm of magnetic material extending into said air gap and a second lever arm at an angle relative to the first lever arm for impacting the printing devices, a plurality of operating coils stationary relative to the corresponding actuators and each having the first arm of a corresponding lever arm extending therethrough as a core, means for energizing the operating coils selectively for developing different polarities in the individual cores thereby to rock the rockable lever arms from a rest position to a position for impacting the printing devices and to return them to said rest position, and biasing means to restore the printing devices to a corresponding rest position after impaction thereof for printing and after the restoration of said rockable lever arms to said rest position thereof.
Claim 11
Dependent Claim
45 words
A high-speed printer according to claim 7, in which said second lever arm of each rockable lever is disposed vertically, a common shaft rockably mounting said rockable levers, travelling means mounting said rockable levers and said printing devices for travel jointly along a given path.
Claim 12
Dependent Claim
17 words
A high-speed printer according to claim 8, including a platen relative to which said travelling means travels.
Claim 13
Dependent Claim
25 words
A high-speed printer according to claim 7, in which said pole pieces comprises two elongated pole pieces, and in which said air gap is elongated.
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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |