Ink jet recording method and head

Details Ink jet recording method and head Ink jet recording method and head

2006-01-31

2006-01-31

Nguyen, Thinh (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

C347S009000

Reexamination Certificate

active

06991309

ABSTRACT:
Liquid jet recording apparatuses and liquid jet recording methods are provided. Ink droplets are jetted from ink jetting orifices. A cross sectional area of each of the ink jetting orifices is equal to or less than 500 μm2. A frequency with which the ink droplets are jetted is controlled to fall within a range from 8 KHz to 40 KHz. A flying velocity of each ink droplet is equal to or greater than 5.2 m/sec. A number of ink droplets which are jetted to form each pixel of the image formed on the recording medium is controlled based on the image data. Each of the ink jetting orifices has a size such that when an amount of ink is jetted, adjacent pixels are separated from each other on the recording medium when each pixel is formed of a single ink droplet, thereby forming a gray image. The image becomes darker based on a number of ink droplets jetted to form each pixel.

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