| 摘要 |
PURPOSE: A developer supplying method of a developer supply device used for a wet-type developing apparatus is provided to require no additional process tank to control the concentration and level of a developer. CONSTITUTION: A developer having a predetermined concentration, which is made by mixing a carrier with an ink is supplied to a circulation tank at a predetermined solution level(S210). The concentration and solution level of the developer contained in the circulation tank are judged(S220,S260). When the concentration is lower than a minimum concentration value or the level is less than a minimum level, the developer is drained to a process tank(S230). A predetermined amount of developer contained in the process tank is supplied to the circulation tank in order to measure the concentration of the solution in the process tank using a concentration sensor of the circulation tank(S240). The carrier, ink or solution in the process tank is provided to the circulation tank to make the developer in the circulation tank be a predetermined concentration and a predetermined solution level(S250).
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