Patent ID: 7472651

Claim:
A waste liquid regeneration apparatus for a printer, comprising: a vessel into which waste liquid containing ink pigment, water and cleaning fluid used in the printer is supplied; a first chamber and a second chamber provided in said vessel; a metal electrode plate disposed substantially horizontally in said vessel so as to partition said first chamber from said second chamber while allowing the waste liquid to flow between said first chamber and said second chamber, said metal electrode plate having a top surface facing said second chamber and an under surface facing said first chamber; a third chamber, located below said first chamber and separated from said metal electrode plate, for reserving water; a high voltage power supply for applying a voltage to said metal electrode plate; a grounding electrode connected to the water in said third chamber; and a waste liquid supplying apparatus for supplying the waste liquid to said first chamber, said waste liquid supplying apparatus being operable under an intermittent supplying mode, in which mode the waste liquid is alternately supplied for a fixed time period and stopped from being supplied for a fixed time period to said first chamber.