Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Hammer driver controller for impact printers










Image Number 3 for United States Patent #4062285.

To obtain a substantially uniform print density while printing at high speed with a hammer-type impact printer, the hammer is electromagnetically driven in response to an energizing current which decays with a predetermined time constant from a high initial level toward a set point level which is automatically adjusted for different classes of characters so that the impact energy imparted to the hammer is regulated as a function of the character being printed. To adaptively absorb the shock forces generated by the rebounding hammer, the energizing current for the electromagnetic driver is reduced to a predetermined fraction of the set point level.








 
 
  Recently Added Patents
Oral care implement accessory
LED light source lamp having drive circuit arranged in outer periphery of LED light source
Escalating data backup protection in response to a failure in a cluster of nodes
Press nut
Solid-state image capture device and image capture apparatus
Method and system for automatically hiding irrelevant parts of hierarchical structures in computer user interfaces
Plants and seeds of hybrid corn variety CH979678
  Randomly Featured Patents
Implant
Break-away safety shield for needle cannula
Software and hardware simulation
Shift register with a built in level shifter
Bioadhesive, closed-cell foam film, sustained release, delivery devices and methods of making and using same
Velocity change sensor with contact retainer
Virtualized load buffers
Method of treatment using interferon-tau
Methods of modulating immune coagulation
Pressurized beverage container dispensing system