Patent ID: 6411790
Filing Date: 2002-06-25
Classification: G03G

Abstract:
A wet-type electrophotographic printer, comprising:a developing unit, for developing an electrostatic latent image; and a first ink feeding/circulation unit, comprising: an ink feeding valve, for admitting ink from a refill cartridge; an ink storage tank, for storing ink from the refill cartridge; a bidirectional gear pump mounted on said ink storage tank, for pumping ink into and out of the ink storage tank; a first ink feeding pipe having a first check valve therein and extending from said ink feeding valve to said bidirectional gear pump, for feeding ink undirectionally from the ink feeding valve to the ink storage tank; a circulation tank, for storing developing solution to be fed to the developing unit; and a second ink feeding pipe having a second check valve therein, extending from between said first check valve and said gear pump in said first ink feeding pipe to an input of said circulation tank, for feeding ink undirectionally from the ink storage tank to the circulation tank.