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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:

Class Number Class Name Patents
101/93.3 Rotary member moves hammer to engage print characters 8
101/93.32 With intermediate force transmitting member 5
101/93.34 With spring 43


Patents under this class:
1 2

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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