Resources Contact Us Home
Method and apparatus for producing a multi-colored image in an electrophotographic system

Image Number 5 for United States Patent #5916718.

Apparatus and method in which a multi-color image, such as a standard four color image, is assembled on a medium, such as paper or film. Liquid ink contains conventional "solid" colored toner particles and also contains transparent counter ions. The conventional "solid" colored toner particles in plate to the surface of the photoreceptor while the transparent counter ions plate in the opposite direction, i.e., the transparent counter ions plate to the surface of photoreceptor in areas which are not discharged. Conventional "solid" colored toner particles plate to electrode in areas where the photoreceptor has not been discharged while transparent counter ions plate to electrode in areas discharged. This allows an apparatus and method in which the multi-color image can be assembled during a single pass of a photoreceptor without the necessity to erase and externally recharge the photoreceptor between development steps for each separate color resulting in an apparatus and method which can print multiple color images at an unrivaled speed.

  Recently Added Patents
Systems and methods for printing images outside a normal color gamut in image forming devices
Trimming circuit and semiconductor device
Electronic circuit having shared leakage current reduction circuits
Cationic polymers for antimicrobial applications and delivery of bioactive materials
Probe card holding apparatus with probe card engagement structure
Crowd formation based on wireless context information
Magnetoresistive shield with coupled lateral magnet bias
  Randomly Featured Patents
Hybrid frequency modulation feedback loop remote volume control circuit
Adjustable tire tie-down apparatus
Torque indicator ratchet wrench for dentistry
Configurable support apparatus for flexible pipe and method
Liquid crystal light valve with photosensitive layer having irregular diode pattern
System for mounting a hollow post about a pipe
Expanded board or sheet-like food product and method of manufacturing the same
Method and apparatus for air caloric testing for the evaluation or aural vestibular disorders
Image forming apparatus and finisher therefor
Surface configuration of a forklift, toy, and/or other replicas