| 摘要 |
PURPOSE:To control the concentration of the titled developer appropriate, even in case of mixing it with an another developer by incorporating a colored coloring agent and a resin and also a black coloring agent or a light shielding material to a carrier liquid composed of an aliphatic hydrocarbon. CONSTITUTION:The titled developer comprises a carbon black as the black coloring agent and an opaque material (such as zinc oxide, titanium oxide) for shielding off the light amount for a light sensor as the shielding material. The titled developer contains about 0.01-15wt% of the black coloring agent or the light shielding agent per the coloring agent. The titled developer comprises a color toner as the colored coloring agent and a binder resin as the resin. The titled developer is obtd. by incorporating the colored coloring agent, the resin and the black coloring agent or the light shielding material in the carrier liquid (such as trichlorotrifluoroethane, etc.). Accordingly, as the titled developer contains the black coloring agent, etc., the abnormality of a sensor due to color mixing of developers is prevented, and the stable copy image is formed. |
