Patent ID: 6193348
Filing Date: 2001-02-27
Classification: B41J

Abstract:
A liquid jet recording apparatus for jetting ink droplets to a recording medium in accordance with image data on demand so that an image having pixels corresponding to the image data is formed on said recording medium, said liquid jet recording apparatus comprising:ink jetting orifices from which ink droplets are jetted, an area of each of said ink jetting orifices being equal to or less than 500 .mu.m.sup.2 ; andcontrol means for controlling a frequency with which the ink droplets are jetted to fall within a range from 8 KHz to 40 KHz, a flying velocity of each ink droplet being equal to or greater than 5.2 m/sec., wherein said control means further controls a number of ink droplets which are jetted to form each pixel of the image formed on said recording medium based on the image data, the number of ink droplets jetted being equal to or less than twenty, and wherein each of said ink jetting orifices has a size that an amount of ink is jetted so that adjacent pixels are separated from each other on said recording medium when each pixel is formed of a single ink droplet, thereby forming a gray image, the image becoming darker based on the number of ink droplets jetted to form each pixel.