Resources Contact Us Home
Zonal concentrator for accurate erasure of photoconductor charge

Image Number 3 for United States Patent #4344691.

Erase apparatus for use in an electrophotographic copier machine where an array of light-emitting diodes (LEDs) is placed adjacent a plano-convex-cylindrical entrance end of an optical element such that light rays from the LED array are directed through the optical element to its exit end. At the convex-cylindrical exit end, the light rays are directed to the photoconductive surface of the machine. The optical element directs the more intense light rays emitted from the LEDs near the central axis to the edges of the erasure footprint while the less intense rays emitted from the LEDs at larger angles from the central axis are redistributed to the central portion of the erasure footprint.

  Recently Added Patents
System and method for organizing, processing and presenting information
Software management system for network data processing systems
Interface circuit and interface system
Resonant conversion system with over-current protection processes
Hydrolases, nucleic acids encoding them and methods for making and using them
Method for preparing an organic film at the surface of solid support under non-electrochemical conditions, solid support thus obtained and preparation kit
  Randomly Featured Patents
Portion of a shoe upper
Drum assembly having helical gear and spur gear spaced therebetween for use in printer
Gas generator for airbag and air bag system
Process for selective hydrogenation, in particular of diolefins in steam cracking volatiles, with a catalyst in the form of beds which are used successively
Fungicidal pyrimidinones
Wavelength division multiplexing methods and apparatus for constructing photonic beamforming networks
Display device and image display system
Hydro-pneumatic wheel suspension
Reaction vessel
Pixel structures and fabricating methods thereof