US3584575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mosaic printing head and device for producing the same
Assignee: Individual
•
Filing: 1968-11-12
•
Granted: 1971-06-15
•
Expires: 1988-11-12
Abstract
Abstract A printing head for raster or mosaic-type printing is composed of a block and a mouthpiece; both consisting of synthetic plastic, which are joined with each other. The block and mouthpiece guide individual printing wires along their entire length up to the exit plane of the mouthpiece. The spreading of the wires at the block side remote from the mouthpiece corresponds to the diameter of the respective electromagnetic drives used for operating the wires. In the mouthpiece the printing wires form with each other respective angles amounting to approximately one-half of the spreading angle obtaining between the driving members and the mouthpiece. The spacing between the printing wires in the exit plane of the mouthpiece is such that the wires touch each other only when they reach the printing plane. The guide channels for the printing wires extend between the electromagnetic drives and the mouthpiece on a curved path corresponding to the free bending line of the printing wires.
Inventors
- 👤 Johann Distl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:20
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/22; B41J2/23; B41J2/235; B41J2/265; G; G06; G06K; G06K15/00; G06K15/02; G06K15/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
163 words
Mosaic printing head comprising printing wires and respective electromagnetic means for driving said wires, a base structure of synthetic plastic with a mouthpiece, guide channels for said respective wires extending through base structure and said mouthpiece and converging in said base structure and in said mouthpiece from a wide mutual spacing to a narrow print-head spacing at the face of said mouthpiece, each of said channels guidingly surrounding one of said respective wires from said mouthpiece face along substantially the entire length of the wire and diverging each into an elongated chamber whose diameter is larger than that of said channel, said electromagnetic means comprising elongated electromagnets located in said respective chambers, the longitudinal axes of said channels in said mouth piece being inclined relative to respective geometric reference lines normal to the mouthpiece face, and the angles between said reference lines and the longitudinal axes of said respective elongated electromagnets being about twice as large as the inclination angles in said mouthpiece.
Claim 2
Dependent Claim
163 words
Mosaic printing head comprising printing wires and respective electromagnetic means for driving said wires, a base structure of synthetic plastic with a mouthpiece, guide channels for said respective wires extending through base structure and said mouthpiece and converging in said base structure and in said mouthpiece from a wide mutual spacing to a narrow print-head spacing at the face of said mouthpiece, each of said channels guidingly surrounding one of said respective wires from said mouthpiece face along substantially the entire length of the wire and diverging each into an elongated chamber whose diameter is larger than that of said channel, said electromagnetic means comprising elongated electromagnets located in said respective chambers, the longitudinal axes of said channels in said mouth piece being inclined relative to respective geometric reference lines normal to the mouthpiece face, and the angles between said reference lines and the longitudinal axes of said respective elongated electromagnets being about twice as large as the inclination angles in said mouthpiece.
Claim 3
Dependent Claim
87 words
In a printing head according to claim 1, said electromagnetic means comprising for each of said printing wires a conically shaped and magnetizable jacket in one of said respective chambers, a magnetizable core piece stationarily disposed in said jacket and having a central bore traversed by said wire, a magnet coil inwardly adjacent to said jacket, a movable armature in coaxial alignment with said core piece and connected with said wire for longitudinally moving said wire, and a return spring for biasing said armature toward inactive position.
Claim 4
Dependent Claim
49 words
In a printing head according to claim 1, said base structure having intermediate conical channel portions in which said guide channels merge with said respective bores, and Said base structure having an air gap extending transversely of said guide channels and intersecting them near said intermediate conical channel portions.
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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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |