Patent ID: 6064410
Filing Date: 2000-05-16
Classification: B41J

Abstract:
An electronic printing apparatus responsive to a digital image for providing image pixels of continuous tone optical density in an output image on a receiver, comprising:a) a receiver including field-driven particles in a matrix, the field-driven particles being responsive to applied electric fields of different amplitude and duration to change the optical density on the receiver;b) an array of electrodes associated with the receiver for selectively applying electric fields according to the digital image to form image pixels across the receiver; andc) electronic control means coupled to the array and responsive to the digital images for computing properly modulated voltage waveforms by selecting amplitudes and durations of voltage pulses applied to the electrode array so that, when the voltage waveforms are applied to the array, fields are produced by the array and applied to the receiver to provide continuous tone pixels having optical densities corresponding to the digital image.