B41J 9 - Hammer-impression mechanisms

Patents for B41J 9 - Hammer-impression mechanisms (955)
04/1989
04/04/1989	US4818128 Impact printer capable of being equipped with an auto sheet feeder
04/04/1989	US4817522 Printer device
03/1989
03/14/1989	US4812062 Print hammer with flux detection for print pressure control
03/08/1989	EP0305916A2 Aerodynamic damper for impact printing actuator
03/08/1989	EP0305871A1 Wire-dot print head driving apparatus
02/1989
02/21/1989	US4806031 Uniform print density and registration in an impact printer
02/15/1989	EP0303124A1 Control for enabling flight timing of hammers during printing
02/07/1989	US4802776 Print head having a wear resistant rotational fulcrum
01/1989
01/18/1989	EP0299267A2 Power recovery circuit
01/12/1989	DE3822307A1 Drucker mit einem verbesserten hammerwerk Printer with an improved hammer factory
01/10/1989	US4797017 Wire dot matrix printer capable of printing letters on a plurality of superposed sheets of paper
12/1988
12/14/1988	EP0294474A1 Apparatus and method for indicating the extent of movement of a movable member of an electromagnetic device.
12/13/1988	US4790674 Impact printer having wear-resistant platings on hammer springs and pole piece tips
12/07/1988	EP0293638A1 Needle print head with flap armature electomagnets
11/1988
11/17/1988	WO1988008792A1 Matrix printing head with swinging-armature magnets
11/16/1988	EP0226579A4 Print element band for impact printer.
11/01/1988	US4781477 Dot matrix print head
10/1988
10/25/1988	US4780015 Impact detecting platen for a high speed impact line printer
10/18/1988	US4777875 Printer head bank and method of manufacturing the same
10/04/1988	US4774882 Method for controlling printing impact power in impact type dot printer
09/1988
09/28/1988	EP0284578A1 A printhead with moving mechanism for print elements
09/20/1988	US4771689 Unitary spring armature for a dot matrix printer
09/06/1988	US4768892 Electromagnetic hammer actuator for impact printer
08/1988
08/25/1988	WO1988005156A3 Apparatus and method for indicating the extent of movement of a movable member of an electromagnetic device
08/16/1988	US4764039 Method for controlling line printers comprising a revolving type band and a print hammer bank
08/09/1988	CA1240202A1 Lettering apparatus
08/02/1988	US4760785 Printer with rotating hammers
07/1988
07/26/1988	US4759647 Dual pitch impact printer
07/14/1988	WO1988005156A2 Apparatus and method for indicating the extent of movement of a movable member of an electromagnetic device
07/12/1988	US4756246 Lubrication system for print hammer pivot pin
06/1988
06/29/1988	EP0272287A1 Printer energy control circuit.
06/28/1988	US4753544 Multi-color plural belt printer with sliding hammer
05/1988
05/31/1988	US4747709 Printing apparatus with variable impact pressure
05/18/1988	EP0267720A2 Flexible print wire guide for dot matrix printers
05/18/1988	CN87207379U Turnover character hammer assembly for standard fond chinese typewriter
05/17/1988	US4744684 Impact-type recording apparatus
05/11/1988	EP0266977A2 Print head for use in a wire matrix printer
05/10/1988	US4743821 Pulse-width-modulating feedback control of electromagnetic actuators
05/10/1988	CA1236339A1 Backstop and damping apparatus for actuator
05/04/1988	EP0265799A2 Platen for impact line printers
04/1988
04/27/1988	EP0264909A1 Impact printer
04/27/1988	EP0264533A2 Damping apparatus for a print hammer mechanism
04/26/1988	US4740094 Print pressure control device
04/20/1988	EP0263949A2 Pulse-width-modulating feedback control of electromagnetic actuators
04/19/1988	CA1235328A1 Print head
04/12/1988	US4737044 Method of printing characters in typewriters or similar office machines
04/12/1988	US4737043 Impact mechanism for quiet impact printer
04/12/1988	US4736679 Band printer and print band
04/05/1988	US4735515 Serial printing apparatus having two character generators, one which generates characters common to a plurality of countries
03/1988
03/23/1988	EP0260732A1 Magnet actuator for a printing needle of a mosaic printer
02/1988
02/16/1988	US4725158 Printing apparatus including a memory for storing title information and associated text information
02/09/1988	US4723855 Compact printer
02/02/1988	US4722622 Damping apparatus for a print hammer mechanism
02/02/1988	CA1232224A1 Serial print wheel impact printer
01/1988
01/26/1988	US4721400 Hammer unit for printers
12/1987
12/08/1987	US4711170 Printing wire driving device in wire dot printer
12/03/1987	WO1987007219A1 Printer energy control circuit
12/01/1987	US4710043 Impact printer with variable delay for print cycle based on different print-hammer energy levels
12/01/1987	US4710042 Method and apparatus for indexing the print hammer of typewriters or the like
11/1987
11/24/1987	US4708501 Electromagnetic hammer printing device including a limited action spring force
11/17/1987	US4706561 Printing activator test circuit generating back EMF
11/10/1987	US4705412 Protection circuit for drive transistor of printer head
11/10/1987	CA1229062A1 Fast impact hammer for high speed printer
11/03/1987	US4703689 Two lever print actuator with aligned pivots and energy transfer surfaces
10/1987
10/28/1987	EP0242931A1 Book cover serial stamp printer
10/28/1987	EP0242635A2 Control signal profiler for multiple actuator assembly
10/01/1987	DE3609943A1 Printing hammer with spring member for impression printers
09/1987
09/23/1987	EP0237600A1 Elastic backstop for a print hammer actuator in an impact printer
09/01/1987	US4690575 Device for controlling printing pressure according to the kind of ink ribbon being used
08/1987
08/25/1987	CA1225960A1 Daisy wheel type printing device
08/25/1987	CA1225875A1 Long release coil hammer actuating mechanism
08/25/1987	CA1225874A1 Printer having drive and control system for metal band holding print elements
08/18/1987	US4687356 Electronic printer with interleaved storage of print wheel position, hammer intensity, and carriage position data in read only memory
08/18/1987	US4686900 Impact printer with application of oblique print force
08/11/1987	US4685816 Impact printer with means for adjusting the associated print hammer
08/04/1987	US4683820 Printing mechanism
08/04/1987	US4683819 Compact printer with hammer structure within type drum
08/04/1987	US4683817 Dot matrix print head energy control circuit
07/1987
07/21/1987	US4681469 Quiet impact printer
07/07/1987	US4679169 Printer hammer resetting control system
07/07/1987	US4678355 Print tip contact sensor for quiet impact printer
07/07/1987	CA1223837A1 Electromagnetic printing hammer device
07/01/1987	EP0226579A1 Print element band for impact printer.
06/1987
06/24/1987	EP0226398A2 Impact printer with application of oblique print force
05/1987
05/27/1987	CN86104546A Electromagnetic hammer actuator for impact printer
05/26/1987	US4668112 Quiet impact printer
05/19/1987	US4667117 Self-timing and self-compensating print wire actuator driver
05/12/1987	US4665371 Character spacing circuit for controlling print hammer firing
05/12/1987	US4664543 Device for monitoring and compensating for changes in the flight time of the print hammers of impact printers
05/12/1987	US4664541 Microprogrammed control apparatus for dot matrix serial printers
05/12/1987	US4664540 Mechanism utilizing resilient energy
05/06/1987	CN85107700A Improvements in impression machine
04/1987
04/30/1987	DE3603816C1 Printing hammer magnet arrangement, in particular for daisywheel typewriters
04/15/1987	EP0217973A1 Skewed print hammer for an impact printer
04/14/1987	EP0169196A4 Lever driven hammer for dry film printer.
04/01/1987	EP0216611A1 Print hammer actuator for impact printer
03/1987
03/31/1987	US4653945 Rotary wheel printing apparatus with controllable hammer striking force
03/25/1987	EP0215198A1 Serial print wheel impact printer
03/25/1987	EP0215141A1 Control method for line-printers with revolving type belt and print hammer bank
03/24/1987	US4651640 Print hammer bank in modular design

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