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Class Information
Number: 101/93.29
Name: Printing > Selective or progressive > Bed and platen machines > With printing type carried on rotatable member > Rotating axis parallel to print line > Hammer member movable to print member > Including electromagnetically actuated means
Description: Apparatus in which the means to move the member striking the type or print characters to perform the print action includes a solenoid or like electrical member.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5906157 |
High speed impact print hammer |
May. 25, 1999 |
| 5743665 |
Printer integrated driver and hammerbank |
Apr. 28, 1998 |
| 5413421 |
Printing head device |
May. 9, 1995 |
| 5383399 |
Zero hammer adjustment drum printer control technique |
Jan. 24, 1995 |
| 5381064 |
Print wheel motor for encoder |
Jan. 10, 1995 |
| 5373784 |
Type-wheel resetting mechanism for printer |
Dec. 20, 1994 |
| 5372437 |
Print head of wire-dot printer and production method thereof |
Dec. 13, 1994 |
| 5344242 |
Printer hammerbank with low reluctance magnetics |
Sep. 6, 1994 |
| 5312195 |
Electromagnetic drive mechanism for the printing pin of a print head |
May. 17, 1994 |
| 5290112 |
Matrix print head, in particular serial matrix pin print head |
Mar. 1, 1994 |
| 5241904 |
Dot like printer employing overlapped current applying sequence to coils of different groups |
Sep. 7, 1993 |
| 5192148 |
Dot line printer having improved comb yoke |
Mar. 9, 1993 |
| 5188465 |
RMS power controller for dot-matrix printers |
Feb. 23, 1993 |
| 5152217 |
Printer having improved hammerbank airflow |
Oct. 6, 1992 |
| 5120143 |
Solenoid energization current controlling apparatus |
Jun. 9, 1992 |
| 5099383 |
Print head activating circuit for a wire dot printer |
Mar. 24, 1992 |
| 5046871 |
Actuator for print hammer |
Sep. 10, 1991 |
| 4995744 |
Impact printer actuator using magnet and electromagnetic coil and method of manufacture |
Feb. 26, 1991 |
| 4944222 |
Printer device with noise reducing impact hammer |
Jul. 31, 1990 |
| 4897557 |
Electronic control system, in particular for a printer |
Jan. 30, 1990 |
| 4879947 |
Printhead which minimizes stray magnetic flux |
Nov. 14, 1989 |
| 4875409 |
Magnetic print hammer actuator protection circuit |
Oct. 24, 1989 |
| 4874265 |
Impact mechanism for impact printer |
Oct. 17, 1989 |
| 4867059 |
Impact printer print mechanism and method of manufacture |
Sep. 19, 1989 |
| 4852480 |
Dot line printer with individually replaceable printing head |
Aug. 1, 1989 |
| 4852481 |
Print hammer mechanism |
Aug. 1, 1989 |
| 4842429 |
Type face striking system in an office writing machine |
Jun. 27, 1989 |
| 4833981 |
Field replaceable print hammer |
May. 30, 1989 |
| 4812062 |
Print hammer with flux detection for print pressure control |
Mar. 14, 1989 |
| 4806031 |
Uniform print density and registration in an impact printer |
Feb. 21, 1989 |
| 4771689 |
Unitary spring armature for a dot matrix printer |
Sep. 20, 1988 |
| 4762063 |
Bar code printing method |
Aug. 9, 1988 |
| 4756246 |
Lubrication system for print hammer pivot pin |
Jul. 12, 1988 |
| 4708501 |
Electromagnetic hammer printing device including a limited action spring force |
Nov. 24, 1987 |
| 4706561 |
Printing activator test circuit generating back EMF |
Nov. 17, 1987 |
| 4703689 |
Two lever print actuator with aligned pivots and energy transfer surfaces |
Nov. 3, 1987 |
| 4678355 |
Print tip contact sensor for quiet impact printer |
Jul. 7, 1987 |
| 4655130 |
Printer |
Apr. 7, 1987 |
| 4652158 |
Armature support device for torsion spring print head |
Mar. 24, 1987 |
| 4651640 |
Print hammer bank in modular design |
Mar. 24, 1987 |
| 4643600 |
Stabilizing device for hammer bounding at printers |
Feb. 17, 1987 |
| 4637742 |
Wire drive circuit in dot-matrix printer |
Jan. 20, 1987 |
| 4627344 |
Impact printer with magnetic interaction compensation |
Dec. 9, 1986 |
| 4589787 |
Printer with rotatable print band |
May. 20, 1986 |
| 4540966 |
Multiple magnet core unit |
Sep. 10, 1985 |
| 4525084 |
Device for adjusting position of printing head of printer |
Jun. 25, 1985 |
| 4522122 |
Fast impact hammer for high speed printer |
Jun. 11, 1985 |
| 4514737 |
Printing head driving apparatus |
Apr. 30, 1985 |
| 4498388 |
Print hammer mechanism having intermediate pivot fulcrum |
Feb. 12, 1985 |
| 4454809 |
Print hammer mechanism |
Jun. 19, 1984 |
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