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7927031 |
Impact printhead
An impact printhead includes impact wires loosely held in a guide and driven to print. The printhead includes individual holes through which corresponding wires extend, and elongated holes formed...
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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...
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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...
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6776545 |
Impact dot print head and a printer including the same
In the impact dot print head of the present invention there is used an armature spacer having side yoke portions which extend away from cores of a yoke and confront armatures. With such an armature...
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5674015 |
Arrangement of actuators and tip ends in a wire dot print head
Plural guide holes are arranged in a matrix form in a wire guide. Plural print drivers are circularly arranged in plural layers for first print drivers belonging to a layer near to the wire guide...
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5540508 |
Print head for an impact dot printer
A print head for an impact dot printer capable of printing on a printing medium is provided. The print head includes a plurality of print wires and a front end guide having guide holes for guiding...
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5527118 |
Wire dot print head and method for manufacturing same
An improved wire dot print head for increased integrated density is provided. The wire dot print head includes a frame. A plurality of drive coils are mounted within the frame. A lever for driving...
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5482387 |
Dot print head and method of control over printing therewith
In a dot print head of an impact type moved in a direction of spacing movement relative to a printing medium, and having a plurality of printing elements each having a printing wire arranged...
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5449239 |
Impact dot head with resiliently mounted wire guide
Disclosed is an impact dot head and an impact dot printer provided as not causing wire breakage by supporting a wire performing a printing operation so as to be resiliently oscillatable in a...
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5433538 |
Wire guide in a wire dot print head
A wire dot print head having long thin print wires capable of axially advancing and withdrawing with respect to a print surface, and a wire driving device connected to the proximal end of each of...
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5238313 |
Dot matrix printer with improved wire guide
An impact dot head of a printer provided with a plurality of printing wires. The top end guide and/or the nose formed with protrusions at the sides thereof and with holes for slidably guiding the...
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5236266 |
Stacked print wire driving device for wire type dot printer
A print wire driving device for a wire dot printer includes a plate like member having slots therein. The slots are arranged opposite the cores of a magnetic core block. The cores are arranged in a...
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5127749 |
Method of repairing printheads and product thereof
A method of repairing a spent printhead or printhead subassembly and a repaired printhead or printhead subassembly made in accordance with such method is disclosed. The method includes the steps of...
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5083876 |
Print wire alignment in a wire dot printer
A printing head for a wire dot printer includes a plurality of printing levers connected to a corresponding plurality of printing wires. A plurality of guide holes are operable for guiding the...
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5048985 |
Wire guide device for wire dot printer
A wire dot printer using a plurality of print wires to print on a printing medium. The printer includes a print head unit, a guide member defining a wire nose mounted on one end of the print head...
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5011308 |
Releasing type dot printer head
Supporting parts are disposed on both sides of the end parts of a plurality of armatures to which needles are fixed. Elastic members are held by elastic-member-holding parts with limited play in...
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4950092 |
Wire dot print head with a pair of guide nose halves
In a wire dot print head having print wires extending through an opening of a guide nose, the guide nose comprises two halves. The print head may further comprise a wire guide which is fitted in...
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4915524 |
Print wire guiding device for wire type dot printer
A wire guide member for use in a wire type dot printer for guiding print wires and having a guide member with grooves. The wire guide member includes a first plate formed of synthetic resin, a...
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4909646 |
Printer head in which a printing end can be readily machined without being obstructed by a protecting member therefor
In a printer head comprising a print element (12) and a protecting member (32) which is for protecting a printing end (24) of the print element, the protecting member is movable in a predetermined...
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4802781 |
Dot matrix printer having increased impact force and higher operating frequency
The disclosure relates to a method of making a print head and the print head for a dot matrix printer, wherein there is provided a print wire actuator housing, a plurality of print wire actuators...
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4767226 |
Print head with wires which continuously contact the tip guide
Disclosed is a print head for a printer which performs a printing operation with dots on a printing medium. The print head is provided with an armature and a wire holder fixed to the armature. A...
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4662764 |
Ruby and needle guiding group for needle printing head
A needle end ruby of a needle printing head where the printing needle writing ends are arranged along one or more parallel columns is comprised of two or more plates juxtaposed on one or more...
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4641981 |
Dot matrix print head
A modified wire guide and assembly method for facilitating the insertion of wires into a dot matrix print head. In the preferred embodiment, the wire guide has a planar surface with downwardly...
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4637743 |
Matrix printer and inker for indefinite length articles
A stationary dot matrix printer for printing both continuously variable and repetitive information on a moving substrate utilizing a readily replaceable ink applicator for applying ink to a blank...
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4610554 |
Ink composition and wire dot printer including same
A wire dot printer that requires no cover over the wire portion of the printer head when not in service in order to prevent ink drying is constructed using an ink supply devoid of water. The ink...
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4567570 |
Electronic control system for a linearly slanted print head
A logic network and method for processing columns of vertically oriented imaging data bits to produce control signals for operating a linearly slanted print head, includes writing different equal...
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4552716 |
Method for manufacturing a wire matrix print wire guiding device
An apparatus and method for manufacturing a wire matrix print head print wire guiding device which allows automatic insertion of manufacturing wires in a mold, which wires after molding define...
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4548521 |
Dot matrix print head
A dot matrix print head has a unitary member in the manner of a ring with a plurality of integral projections formed to position the armatures of print wire actuators, and ring portions to space...
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4447166 |
Printing head of dot printer
In printing head of a dot printer according to this invention, a groove having width a little greater than diameter of top end of a needle is formed in front of a needle guide to guide the needle,...
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4365902 |
Wire matrix print head
A multiwired print head having an elongated conical center member with wire guiding sections formed thereon and with a plurality of recessed portions for minimizing the surface contact area between...
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4309116 |
Print head assembly of wire dot matrix printer
A molded one-piece wire guide which aligns the free ends of a plurality of reciprocating print wires in a given vertical plane which extend from a set of solenoid assemblies disposed in the...
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4293232 |
Bearing for the printing head of a matrix printer, and printing head comprising such a bearing
A bearing for a printing head of a matrix printer whose slidable printing pins are guided in guide channels which are provided in a portion of the bearing which is made of a comparatively soft...
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4240756 |
Optimized wire matrix impact print head
An improved wire matrix impact print head comprising a plurality of variable length impact print wires or styli, each having an input end for receiving a propelling force and an output end for...
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4226544 |
Wire printing heads
A wire printing head is disclosed in which solenoids are arranged in arcuate configuration, the printing wires being connected in line with their respective solenoids. A wire guide is positioned...
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4211494 |
Device for guiding the printer needles in a mosaic needle printer
A guide assembly for guiding the printing needles of a mosaic printing head utilizing sets of opposed interlocked multi-channelled guide plates forming sets with needle tracks formed in opposed...
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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....
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4154541 |
Printer head assembly
A printer head assembly for use in high speed printers of the dot-matrix type. The assembly includes a plurality of solenoids affixed to a bevelled rear wall of a bracket and arranged in such a...
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4141661 |
Guide system for wire matrix printing
A guide system for arranging a plurality of print wires from a converging arrangement into a parallel arrangement aligned with a column of dot locations to be printed on a record medium, the guide...
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4110884 |
Method for making dust cover for printing needles
A protective dust cover for the needles of a mosaic printing head which eliminates the need for precision matching of segments that fit together to form holes for accepting printing needles passing...
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4091909 |
Wire matrix printer printhead assembly
A wire matrix printer mechanism is designed to print a series of alpha-numeric characters and symbols by mechanically impacting an inked ribbon with a column of small diameter steel wires, driving...
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4084678 |
Printer needle guide means for mosaic printers
Mosaic printer needle guide structure comprising at least a pair of grooved guide members assembled together and having cooperating complementary confronting grooves providing guides for the...
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4081067 |
Internal vibration dampening means for printing mechanism
In a matrix print head, a plurality of elongated printing elements, mounted in a frame, are driven axially by electromagnetic means to effect printing on record media positioned adjacent to the...
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4060161 |
Vibration dampening means for printing mechanism
In a matrix print head, a plurality of elongated printing elements, mounted in a frame, are driven axially by electromagnetic means to effect printing on record media positioned adjacent to the...
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4047606 |
Head for needle printer
The needles in a printing head are guided in curved contour through plural, spaced apart guide plates having double cone bores arranged and configured to follow and determine the needle curving...
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4046303 |
Method of making needle guide devices for mosaic printers
A method of making guide devices for mosaic printer needles by stamping or embossing guide grooves in members of rolled or drawn material, assembling the members with the guide grooves in...
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4009772 |
Mosaic printing head
In a mosaic printing head for applying lettering by means of needles which are ejected as the head is passed over a sheet of paper, the needles are accommodated in a tubular column of bearing...
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4004671 |
Wire matrix print head
A wire matrix print head for a dot matrix printer employs a plurality of electromagnetically actuated print wires converging forwardly through a wire guide member for termination at their leading...
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3994381 |
Wire matrix print head
A wire matrix print head comprised of a plurality of impact print wires or styli, each having an input end for receiving an impact and an output end for delivering an impact to a record medium...
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3927751 |
Pin guide for printing head
The selectively reciprocable pins of a mosaic printing device are guided in a series of holes defined by corundum bearing plates. The holes are precisely oriented relative to the printing head by...
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3907092 |
Matrix wire print head with free bending print wires
This invention relates to an improved wire matrix print head having significantly reduced friction on the print wires and to a method for the manufacture of the improved print head. The print head...
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