High speed printing apparatus
AssigneeOki Electric Industry Co., Ltd.
InventorsAkinori Watanabe, Katsuhide Tanoshima
Life of this patent
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Abstract
In a high speed printing apparatus of the type in which ions produced between electrodes carrying a high voltage are passed through a mist of ink to cause selective particles of the ink to effect printing, there is provided an air circulating system in which the air containing the mists of ink is recovered, treated and again transferred to the printing portion.
Claims9
An air recirculating system for a high speed printing apparatus in which ionized particles are mixed with an air-ink mist to cause printing on a platen, said air-ink mist being formed by vibrating a tank containing said ink, said printing apparatus comprising an anode, a cathode, with said mist being passed therebetween, recording paper for receiving ink to be deposited thereon, an aperture plate and control electrode located between said anode and said ink mist to control the deposition of ink on said recording paper, wherein the improvement comprises passage means for forming air streams between said ink mist and said aperture and control plates and between said ink mist and said recording paper, respectively for preventing soiling of said aperture and control plates, said air recirculating system comprising means to recover the air ink mist after it passes said platen, means for separating said air from said ink, and conduit means for carrying said separated air to the tank for forming said air-ink mist.
Dependencies are inferred from the claim text.