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US 5,399,032 AGranted
Print head having replaceable print elements for wire dot-matrix printer
AssigneeFujitsu Limited
InventorsKiyoshi Itoh, Minoru Hara
Life of this patent
Estimating the term…
Abstract
A print head for a wire dot-matrix printer includes an element base, and a plurality of print elements engaged with and supported by the element base. Each of the print elements includes a print wire, an actuator moving the print wire, and a base supporting the actuator, the base of each of the print elements having an engagement hole. An engagement member is inserted into the engagement hole of the base of each of the print elements and is engaged with the base of each of the print elements.
Claims42
A print head for a wire dot-matrix printer comprising:
- an element base;
- a plurality of print elements engaged with and supported by the element base, each of the print elements including a print wire, an actuator moving the print wire, and a base supporting the actuator, the base of each of the print elements having an engagement hole;
- and
- an engagement member inserted into the engagement holes of the bases of the print elements, said engagement member being engaged with the bases of the print elements,
- wherein the engagement member has screw holes, and the print head comprises screws passing through the base element and engaging the screw holes of the engagement member.
2 more elements
A print head for a wire dot-matrix printer comprising:
- an element base;
- a plurality of print elements engaged with and supported by the element base, each of the print elements including a print wire, an actuator moving the print wire, and a base supporting the actuator, the base of each of the print elements having an engagement hole;
- and
- an engagement member inserted into the engagement holes of the bases of the print elements, said engagement member being engaged with the bases of the print elements,
- wherein the plate-shaped member has a plurality of indentations located between two adjacent print elements.
2 more elements
A print head for a wire dot-matrix printer comprising:
- an element base;
- a plurality of print elements engaged with and supported by the element base, each of the print elements including a print wire, an actuator moving the print wire, and a base supporting the actuator, the base of each of the print elements having an engagement hole;
- and
- an engagement member inserted into the engagement holes of the bases of the print elements, said engagement member being engaged with the bases of the print elements,
- wherein the actuator comprises
- a piezoelectric block;
- a support member supporting the piezoelectric block;
- a pair of electrodes respectively provided on opposite sides of the piezoelectric block;
- and
- a flexible printed wiring board having conductive patterns respectively connected to the electrodes, an insulating layer covering the conductive patterns, and soldering windows formed in the insulating layer and used for connecting the conductive patterns and the electrodes to each other,
- each of the soldering windows having a first length extending in a first direction in which the electrodes extend, and a second length extending in a second direction perpendicular to the first direction, and the second length being greater than the first length.
8 more elements
A print head for a wire dot-matrix printer comprising:
- an element base;
- a plurality of print elements engaged with and supported by the element base, each of the print elements including a print wire, an actuator moving the print wire, and a base supporting the actuator, the base of each of the print elements having an engagement hole;
- and
- an engagement member inserted into the engagement holes of the bases of the print elements, said engagement member being engaged with the bases of the print elements,
- wherein the actuator comprises
- a piezoelectric block;
- a support member supporting the piezoelectric block;
- a pair of electrodes respectively provided on opposite sides of the piezoelectric block;
- and
- a flexible printed wiring board having conductive patterns respectively connected to the electrodes, an insulating layer covering the conductive patterns, and soldering windows formed in the insulating layer and used for connecting the conductive patterns and the electrodes to each other,
- each of the soldering windows having a first length extending in a first direction in which the electrodes extend, and a second length extending in a second direction perpendicular to the first direction,
- the second length being greater than the first length, and
- the flexible printed wiring board having an extension partially wrapped around the piezoelectric block and cutout portions located at edges of the piezoelectric block.
10 more elements
A print head for a wire dot-matrix printer comprising:
- a module base;
- and
- a plurality of element assemblies supported by the module base,
- each of the element assemblies comprising:
- an element base supported by one of the element assemblies;
- a plurality of print elements engaged with and supported by the element base, each of the print elements including a print wire, an actuator moving the print wire, and a base supporting the actuator, the base of each of the print elements having an engagement hole;
- and
- an engagement member inserted into the engagement holes of the bases of the print elements, said engagement member being engaged with the bases of the print element.
5 more elements
A print head for a wire dot-matrix printer comprising:
- a shuttle base;
- and
- a plurality of head units,
- each of the head units comprising:
- a module base;
- and
- a plurality of element assemblies supported by the module base,
- each of the element assemblies comprising:
- an element base supported by one of the element assemblies;
- a plurality of print elements engaged with and supported by the element base, each of the print elements including a print wire, an actuator moving the print wire, and a base supporting the actuator, the base of each of the print elements having an engagement hole;
- and
- an engagement member inserted into the engagement holes of the bases of the print elements said engagement member being engaged with the bases of the print elements.
9 more elements
Dependencies are inferred from the claim text.