METHOD OF MEASURING COLOR TONER CONCENTRATION, TRANSFER EFFICIENCY AND CLEANING EFFICIENCY OF WET TYPE ELECTROPHOTOGRAPHIC PRINTER

摘要

PURPOSE: A method of measuring a color toner concentration, transfer efficiency and cleaning efficiency of a wet type electrophotographic printer is provided to measure the color toner concentration, transfer efficiency and cleaning efficiency using a color toner concentration sensor to improve printing quality. CONSTITUTION: A reference patch is developed on a photosensitive belt(S2). A liquid carrier of the reference patch is dried(S3). A color toner concentration of the dried reference patch is measured(S4). The reference patch is transferred to the transfer roller(S6). A cleaning unit, a reset and developing unit and the transfer roller are separated from the photosensitive belt(S7), and the concentration of the remaining toner of the reference patch is measured(S8). The cleaning unit cleans the remaining toner of the reference patch, and then the concentration of the remaining toner of the reference patch is measured(S12).