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6821035 |
Line printer with staggered magnetics
An impact printer with a hammerbank having print hammers retained by a permanent magnet for impacting a print ribbon, and a mechanical driver for moving the hammerbank across print media. First and...
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4871271 |
Printing head for a wire dot printer
A printing head for use with an electrodynamic type wire dot printer includes an electrodynamic wire actuator disposed in a magnetic field to be deformed by an electromagnetic force, a printing pin...
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4859095 |
Printing head with current passing through the print wire
In a printing head, an actuator pin positioned within a magnetic field is bent to form at least one V-shaped portion and is fixed at the end portion thereof. When current flows in the actuator pin...
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4732498 |
Needle matrix printer
The printer comprises a series of needles (1) each associated to an electric lead (8) which extends in the gap of a permanent magnet (11). The extremities of each lead are fixed to respective...
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4590853 |
Modular print head
A print head for use in a dot matrix printer or the like which comprises a plurality of non-magnetic frames which carry aligned magnets, the frames being arranged in a stack with spaces formed by...
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4493568 |
Dot matrix printhead employing moving coils
Printing apparatus of the dot matrix type comprising a plurality of print wire actuators employing moving coils. The wire printing tip of each actuator is activated by the coil magnetic field...
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4364681 |
Printer having a linear motor
A linear motor for driving a dot printer head includes a carriage carrying print head. The carriage is displaced by a drive system on a linear guide rail. The drive system is a linear motor having...
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4362405 |
Moving coil type printing head
A moving coil type printing head comprises a cantilevered printing lever comprised of a leaf spring having a printing element at its free end. The printing lever has a base portion supported by a...
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4349283 |
Hammer for dot matrix printer
Each hammer includes a frame-like portion with a recess into which an electrically energizable flat coil is received. Affixed to opposite sides of the frame portion, and extending therefrom over...
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4288167 |
Printhead and blades therefor
A printhead for a dot matrix impact printer comprises a stack of thin printing blades each including a flat spiral coil mounted in a rim which is in turn connected by flexible mounting arms to a...
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4260269 |
Split stackable printing blades for matrix printer head
Flat, stackable printing blades for use in an impact printer head of the dot-matrix type, each blade including a conductive coil fastened within a central aperture of a conductive frame having a...
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4218150 |
Matrix printer
A moving coil mechanism is utilized to operate each individual print wire of a matrix printing head. Static magnetic fields for the moving coil mechanism may be provided by permanent magnets. Also...
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4129390 |
Stacked blade matrix printer heads
A printer head for use in an impact printer of the dotmatrix type utilizes a stack of pivoted thin blades, each having a printing tip at one end thereof. A pancake coil is attached to each blade...
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4022311 |
Electrodynamic actuator
An actuator, which in a preferred embodiment, is shown in a wire matrix printer, and includes a magnetic structure having a support member associated therewith. When used in a wire matrix printer,...
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3971311 |
Striking device for dot printer
Striking device for a dot printer, comprising an electrodynamic coil connected with a striking hammer, subjected to the action of at least one magnetic field substantially perpendicular to its...
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3834304 |
HELICAL BAR PRINTER AND HAMMER THEREFOR
In a printer which selectively prints in response to binary coded input character signals, a plurality of rigidly supported, lightweight blades repeatedly strike a continuously rotating helical...
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3830976 |
PRINTING TELEGRAPH MECHANISM
The styli of a mosaic printhead are each attached to switchable conductive loops positioned in a gap between a pole piece and a rotatable magnetic member. The rotatable member is rotated...
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3603442 |
MATRIX PRINTER PARALLEL WITH STYLI AND PLURAL COAXIAL DRIVER COILS
A matrix printer having electrically energizable circular coils spaced along and wound around a cylindrical center pole, styli wires of different lengths which are attached to the coils and extend...
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3467232 |
DOT PRINTING APPARATUS
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