Resources Contact Us Home
Automatic setup apparatus for an electrophotographic printing machine

Image Number 5 for United States Patent #4647184.

An automated process and apparatus is provided for establishing the basic xerographic operating parameters for an electrophotographic printing machine. The document scanning means is used in a setup mode to generate test patches of varying density on the machine photoreceptor. The levels are measured and compared to present values stored in a digital controller memory until convergence is obtained along three separate points on the PIDC curve. The controller adjusts the system parameters of charge circuit, developer bias and system exposure in an iterative process and corresponding to the photo-induced discharge curve for the particular machine.

  Recently Added Patents
Planarizing agents and devices
Method and apparatus for band switching in wireless local access network
Wideband multi-channel receiver with fixed-frequency notch filter for interference rejection
System and method for displaying a constant time selection context menu interface
Signal processing apparatus and methods
Method for selective deposition of a semiconductor material
Lubricating oil compositions
  Randomly Featured Patents
Dental pontic form
Systems for the mass production of proteins or peptides by microorganisms of the genus humicola
Method for forming a colored image
Wheel for motor vehicle
Printer flaten clutch
Method of encapsulating an insert in plastics material by injection molding
Heat-resistant blends of polypropylene, conjugated diene/monovinylarene rubbery block copolymers, with an in-situ cured polychloroprene
Apparatus for the threading out and in of an elastic cover strap in a cylinder without a piston rod
Sweet tableting agent
Method and apparatus for reducing the effects of hardware faults in a computer system employing multiple central processing modules