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7374354 Armature, wire dot printer head and wire dot printer  
In order to realize a weight saving and prevent a concentration of stress to thereby obtain durability endurable for high-speed printing, an armature of the present invention has an arm that is...
7331726 Armature, wire dot printer head and wire dot printer  
In order to obtain joining force endurable for high-speed printing and realize an enhancement in magnetic characteristic, a plate-like arm for supporting a printing wire is laminated with a...
7329059 Wire dot printer head and wire dot printer  
A wire dot printer head of the present invention has an armature that has an arm supporting a printing wire and pivotably provided at the position opposite to the core, and a coil spring that one...
7246960 Print head  
A needle guide ( 5 ) is composed of a first guide wall ( 5 a ) and a second guide wall ( 5 b ) arranged at a distance x from each other. Each of these guide walls is formed with through holes...
6994482 Wire dot printer head and wire dot printer  
In order to restrain a flux loss for obtaining magnetic characteristic required for high-speed printing, a wire dot printer head has armature 4 having a pivot shaft serving as a center of a pivot...
6872016 Impact dot print head and a printer including the same  
In an impact dot print head there is provided a fitting structure for fitting an inner periphery-side cylindrical portion of a yoke and an inner periphery-side ring-shaped portion of an armature...
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...
5611631 Impact printer with reduced electrocorrosion using Zener diode for static discharge  
An impact printer has a print head in which demagnetizing coils are embedded in a filling compound. A resistor or Zener diode is connected in series between the print head and the printer's frame...
5527117 Braille printing solenoid housing  
Disclosed is a printing solenoid specifically adapted and improved for the printing of Braille dots and in particular interpoint Braille. A plunger and printing shaft are fixably mounted together...
5435656 Back stop structure for matrix pin print head  
A matrix pin print head is set to a fixed distance (17) relative to a print counter support (2), where a recording substrate (3) rests on the print counter support (2). An ink ribbon (4) is guided...
5372437 Print head of wire-dot printer and production method thereof  
A print head of a wire-dot printer and a production method thereof, in which superhard chips are attached to contact surfaces of an armature and a core by brazing. The superhard chips can be...
5328279 Dot matrix printer head  
An ink-supplied wire dot matrix printer head for actuating wires with ink attached to tip ends thereof into contact with a sheet of print paper to transfer ink to the sheet, thereby forming ink...
5312195 Electromagnetic drive mechanism for the printing pin of a print head  
An electromagnetic driving device for driving a print needle of a printer employing an E-shaped magnetic yoke. In order to improve print speed, the armature and arms of the yoke are specifically...
5312194 Printing head for printer  
A printing head for a printer comprises a plurality of armatures arranged radially, a drive section including a plurality of drive units which support outer ends of the respective armatures to...
5295750 Wire-dot impact printer  
In a wire-dot impact printer having a capacitance detector for detecting a displacement of each armature by a sensor electrode arranged opposite the armature, a space is formed between each sensor...
5290113 Wire dot printing head  
A spring charge type wire dot printing head includes front cores 35 and rear cores 36 that are disposed in circles. The front and rear cores are used in pairs, and either one of these paired cores...
5071267 Actuation magnet for a printing stylus of a matrix printer  
The invention relates to an actuation magnet for a printing stylus (11) of a matrix printer, in which an armature (12) of the plunger type connected to the printing stylus (11) is guided in the...
4749976 Solenoid  
A solenoid-type magnet drive, including a coil surrounding in parts an axially movable armature, and a housing for mounting the coil, further includes an attenuating device which comprises an...
4611393 Process for producing a dot printer head  
The invention provides a process for producing a dot printer head wherein a plurality of needles having their ends arranged along a straight line have gradually increasing lengths towards opposite...
4562446 Ink-dot printer with magnetic ink attracting and retention preventing means  
An ink-dot printer comprises a magnetic ink storage tank storing magnetic ink, a pair of pole plates facing each other so as to define a slit one end portion of which is contacted with the magnetic...
4561790 Wire matrix print head apparatus  
The invention is a magnetically actuated clapper-style armature wire matrix print head. A light weight highly reliable and low cost design is achieved by utilizing single molded parts wherever...
4513661 Dot matrix line printer  
A dot matrix line printer/plotter apparatus for producing hard copy printout of digitally represented data. The apparatus utilizes one or more hammer banks, each mounted so as to shuttle across a...
RE31813 Print wire solenoid  
A high speed axial-type printing solenoid includes a rebound and energy absorbing arrangement which employs a block of energy-absorbing "dead" elastomeric material held in a partially compressed...
4490057 Print wire solenoid  
A matrix print wire solenoid used in a wire matrix printer and including an enclosure member releasably secured to one end of the solenoid by a spring member deformed by the outer surface of the...
4487515 Multiple action print head control circuit for a dot matrix printer  
A dot matrix print head control circuit is capable of selectively requesting and receiving a predetermined set of print head control data from a digital data processor which successively transmits...
4484170 Dot matrix print head solenoid assembly  
A plurality of solenoid bobbins or bobbin wound coils are collectively attached to and supported from one surface of a printed circuit board and the coil wires are securely connected to the...
4480934 Ballistic print wire actuator using a telescopic armature  
A print wire actuator using a telescopic armature pair is presented. The actuator is disposed to propel a print wire through a predetermined distance from a rest position toward a recording medium....
4468142 Pint wire actuator  
A solenoid-type print wire actuator includes a unitary one-piece bobbin formed of a magnetically permeable material and having two axially spaced-apart annular grooves in the outer surface thereof....
4441830 Printing solenoid  
A dot matrix print actuator of low cost and compact rectangular design is constructed of flat, mild steel stock. An armature is engageable with a spring loaded print wire which is guided through a...
4389126 Serial impact printer having two printing modes  
A serial impact printer has two printing modes, one being a formed-character mode and the other a dot matrix mode. A plurality of dot matrix wires are disposed behind a character carrying member...
4377348 Printer head for serial dot printer  
A serial printer head is provided which comprises a sandwich structure (1,3,5) of a first circular yoke plate (1), a cylindrical magnet (3) and a ring shaped second yoke plate (5); a plurality of...
4373438 Dot printer  
A rounded end on a pivoted arm impacts a print medium through an ink ribbon to form a printed dot on the print medium. For printing, a wire drawn by an electromagnet acts on the arm between the...
4371274 Apparatus for dot-matrix printing with proportional character spacing  
An apparatus for dot-matrix printing with proportional character spacing utilizes a conventional character generator for generating characters with fixed spacing in which a matrix storage area of...
4358795 Graphic scanning and printing device  
A graphic scanning and printing device comprising a scanning element having a plurality of metal bars arranged in series inclined at 10° and movable into engagement with a graphic sign to be...
4350450 Stylus printing head comprising electromagnets on resilient supports  
A stylus printing head comprising a number of electromagnets which operate the printing styli and which are clamped on a conical carrier by means of a clamping device. The carrier comprises...
4341478 Wire printing device  
A wire printing device comprises a plurality of printing wires, each one associated with a corresponding driving electromagnet and a frame which is constituted by a plate folded in order to have a...
4331010 Dot printer  
A dot printer has reciprocable plungers and a constantly oscillating drive member. The plungers are held in a normal rest position and are selectively coupled to and uncoupled from the drive...
4300845 Dot matrix print head  
A dot matrix-type print head for forming a character-defining array of individual dots on a print-receiving surface includes a plurality of parallel-spaced print wires arranged in a vertical plane...
4259653 Electromagnetic reciprocating linear actuator with permanent magnet armature  
A spring-less linear actuator, especially useful as a print wire drive. A permanent magnet armature is driven from a rest position on a pole piece by magnetic repulsion upon energization of a...
4236837 Operating mechanism for a dot matrix printer  
A dot matrix printer comprises an armature connected to a pin, the end of the pin in use, engaging the surface of a paper tape. A preloaded spring is provided to act upon the armature and...
4226545 Electromagnetic drive for recording pins in a matrix printer  
An electromagnetic drive for a recording pin of a matrix printer, comprising a cylindrical armature which is displaceable by means of an excitation coil and in which a clamping sleeve is provided...
4211496 Printing solenoid  
Disclosed is a printing solenoid for a high speed wire matrix printer which provides efficient operation at voltages in the order of 10 to 12 volts DC while maintaining a reduced physical size...
4208138 Dot matrix printer head  
A dot matrix printer with a plurality of armature magnet units mounted on a printer head bracket, each armature magnet unit having an armature with a printing needle attached at one end and...
4200401 Print wire solenoid  
A print wire solenoid for high-speed operation is made with two major components or subassemblies. The first is a plastic injected unitary bobbin or stator assembly which incorporates a core ring...
4158909 Method of making a head for a mosaic printer  
A plastic laminate including a wedge having sides with a large radius and one or two grooved plates, flat when unstressed, and stressed when clamped to the wedge to conform to the radii thereof....
4157873 Dot printing apparatus  
A ferromagnetic core fixed to an end of a wire is electromagnetically attracted such that the core and wire are axially moved so that the free end of the wire strikes paper through a ribbon to...
4155661 Mounting arrangement for electromagnet driving structures in a mosaic needle printer head  
A mounting arrangement for the electromagnet driving structures in a mosaic needle printer head in which each electromagnet structure is mounted on a supporting member provided with recesses of...
4149807 Method of typewriting or printing  
A method of reproducing characters or symbols in place of orthodox typing or printing comprises applying ink to successive points on the paper or other surface by means of a transducer forming a...
4137513 Matrix print wire solenoid  
A matrix print wire solenoid has a small diameter print wire which wire is propelled against printing paper and inking ribbon by the linear motion of the solenoid plunger, to which the print wire...
4125336 Dot matrix printer  
A dot matrix printer including a dot matrix print head assembly including a plurality of thin, elongated print wires having printing end surfaces, and a bearing member for supporting the print...
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