Importance

Loading Importance Indicators...

Abstract

A continuous ink jet recording apparatus which can record an image always with an appropriate density on any of various record media. A vibrating element driver drives a piezoelectric vibrating element in response to a disintegrating frequency signal from an oscillator to disintegrate a jet of ink from a nozzle. A multiplier multiplies picture element data of a line buffer by a density coefficient, and a pulse width modulator converts the picture element data from the multiplier into a charging controlling signal of the pulse width which increases in proportion to the number of ink drops per picture element. The charging controlling signal is applied via a high voltage switch to a controlling electrode, by which the in drops are charged in accordance with the charging controlling signal. A deflecting electrode deflects the charged ink drops. A frequency divider and a frequency converter frequency divides the disintegrating frequency signal by a gradation number and the density coefficient to obtain a picture element recording frequency signal, and a drum motor controlling circuit drives a drum motor to rotate a rotary drum at a speed in accordance with the picture element recording frequency signal.

Loading the Abstract Image...

First Claim