| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a liq. developer capable of controlling or regulating the electric charges of particles so as to optimize image quality by incorporating a nonpolar liq., a thermoplastic resin, a colorant, an electric charge orienting agent and an electric charge controlling agent made of rhodamine Y, benzoic acid, a molybdate, etc. SOLUTION: This liq. developer to be positively charged contains a nonpolar liq., a pigment or dye, a thermoplastic resin, an electric charge orienting agent and an electric charge controlling agent made of rhodamine Y, C.I. Pigment Red 81:3, benzoic acid, 2-[6-ethylamino-3-ethylimino-2,7-dimethylxanthen-9-yl]- ethyl ester or a molybdate. This developer has various advantages including the development and formation of an image having improved image quality especially in a 4-color 4-pass ionographic developing system for a color printer and gives a developed image having high quality and excellent in resolution.</p> |
