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Class Information
Number: 400/124.16
Name: Typewriting machines > Typing by other than type-face or type-die > Character formation by impact (e.g., wire matrix) > Printhead > With actuator > Electrostrictive, magnetostrictive, or piezoelectric
Description: Subject matter wherein the percussive force is produced in the actuator by periodic deformation of a dielectric body as a result of an applied electric or magnetic field or electric voltage.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7037010 |
Thermal printer |
May. 2, 2006 |
| 6779441 |
Automatic metal printer |
Aug. 24, 2004 |
| 6733195 |
Head drive circuit for impact dot printer |
May. 11, 2004 |
| 6331037 |
Drive arrangement for a writing head |
Dec. 18, 2001 |
| 5479064 |
Piezoelectric actuator with a displacement enlarging feature |
Dec. 26, 1995 |
| 5447381 |
Piezoelectric printing head |
Sep. 5, 1995 |
| 5423618 |
Piezoelectric print head control device using adjacent dot data |
Jun. 13, 1995 |
| 5413421 |
Printing head device |
May. 9, 1995 |
| 5399032 |
Print head having replaceable print elements for wire dot-matrix printer |
Mar. 21, 1995 |
| 5331241 |
Electro-strictive actuator |
Jul. 19, 1994 |
| 5326180 |
Arranging structure of print wire driving units utilized in a dot impact print head |
Jul. 5, 1994 |
| 5292201 |
Printing head of wire-dot impact printer |
Mar. 8, 1994 |
| 5214341 |
Piezoelectric acutator device with vibration absorbing means |
May. 25, 1993 |
| 5213424 |
Piezoelectric actuator device |
May. 25, 1993 |
| 5207518 |
Piezoelectric printer |
May. 4, 1993 |
| 5205658 |
Print gap detecting device in print head |
Apr. 27, 1993 |
| 5200764 |
Print head assembly for use in an ultrasonic printer |
Apr. 6, 1993 |
| 5193922 |
Serial printer |
Mar. 16, 1993 |
| 5190383 |
Dot printing apparatus |
Mar. 2, 1993 |
| 5184901 |
Displacement magnifying mechanism for a print element |
Feb. 9, 1993 |
| 5167458 |
Wire driving mechanism |
Dec. 1, 1992 |
| 5167459 |
Apparatus for driving printing head of wire-dot impact printer |
Dec. 1, 1992 |
| 5165807 |
Printing head having a distortion element |
Nov. 24, 1992 |
| 5165809 |
Piezoelectric actuator and print head using the actuator, having means for increasing durability of laminar piezoelectric driver |
Nov. 24, 1992 |
| 5147141 |
Driver circuit for piezoelectric actuator, and dot-matrix head and printer using piezoelectric or other actuator having discharge control means |
Sep. 15, 1992 |
| 5133612 |
Dot impact type printing head with adhesively attached base unit |
Jul. 28, 1992 |
| 5092689 |
Piezoelectric driver of wire-dot impact printer |
Mar. 3, 1992 |
| 5046872 |
Printer actuated by piezoelectrically generated shock wave |
Sep. 10, 1991 |
| 5037217 |
Dot-matrix impact printer using piezoelectric elements for activating print wires |
Aug. 6, 1991 |
| 5033883 |
Variably-controlled electromagnetically driven printer |
Jul. 23, 1991 |
| 5005994 |
Printing head of wire-dot impact printer |
Apr. 9, 1991 |
| 4976553 |
Very small displacement enlargement mechanism and printing head using the same |
Dec. 11, 1990 |
| 4944222 |
Printer device with noise reducing impact hammer |
Jul. 31, 1990 |
| 4929100 |
Taut band piezoelectric actuator for wire matrix printing elements |
May. 29, 1990 |
| 4886382 |
Printing hammer comprising two hinge parts coupling an arm to a base member on both sides of a hinge coupling the arm to a piezoelectric actuator |
Dec. 12, 1989 |
| 4886380 |
Piezoelectric controlled electromagnetically driven printing |
Dec. 12, 1989 |
| 4874978 |
Device for magnifying displacement of piezoelectric element or the like and method of producing same |
Oct. 17, 1989 |
| 4855633 |
Piezoelectric actuator |
Aug. 8, 1989 |
| 4844634 |
Printing head for an impact printer |
Jul. 4, 1989 |
| 4787760 |
Dot matrix print head |
Nov. 29, 1988 |
| 4783610 |
Piezoelectric actuator |
Nov. 8, 1988 |
| 4781477 |
Dot matrix print head |
Nov. 1, 1988 |
| 4589786 |
Impact printer head capable of printing a dot at a distance narrower than a thickness of a printer unit |
May. 20, 1986 |
| 4547086 |
Piezoelectrically driven printing mechanism for dot matrix printers |
Oct. 15, 1985 |
| 4523866 |
Wire print head having piezoelectric drive elements |
Jun. 18, 1985 |
| 4457636 |
Method of actuating printing elements and apparatus for performing the method |
Jul. 3, 1984 |
| 4456394 |
Piezoelectric printer and asymmetric piezoelectric actuator used therein |
Jun. 26, 1984 |
| 4420266 |
Piezoelectric printer and piezoelectric multilam actuator used therein |
Dec. 13, 1983 |
| 4362407 |
Piezoelectric printer and piezoelectric multilam actuator used therein |
Dec. 7, 1982 |
| 4272200 |
Horn loaded piezoelectric matrix printer drive method and apparatus |
Jun. 9, 1981 |
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