A Basic Study of the Effect of Flying Ink on Tone Reproduction Using Electrostatically Extracted Ink Jet

Abstract

This paper describes the results of the quantitative examination given for the first time on the ink flight peculiar to the electrically extracted ink jet method with use of dielectric ink. In the state of ink flight by this method, a liquid thread of a continuous cylindrical liquid thread is formed at the nozzle tip, and then the ink at the thread end turns into corpuscles and spreads out in mist. The author has already reported on the method for observation and on the recording for tone reproduction.
In this paper, an examination was made on the details of average and instantaneous structures of the state of ink flight, covering the wide area from the nozzle tip to the area past the electrodes, and the effect of the state of ink flight on the recording for tone reproduction was studied on the basis of the examination results. Detailed examinations were made on difference in tone, ink density distribution, relation of nozzle diameter to liquid thread diameter and to corpuscle diameter. by changing applied voltages and ink pressures. The results indicate that the ink jet which scatters in an atomized state from the liquid thread is effective in an application to a high quality recording for tone reproduction.