| 摘要 |
PURPOSE:To obtain an electrophotographic toner capable of providing distinct reproduced picture images contg. no stains in the tissue nor causing scattering of toner by incorporating a compd. classified into C.I. Pigment Green 7 group into a toner contg. a binder resin and carbon. CONSTITUTION:A compd. classified into C.I.Pigment Green 7 group is incorpo rated into a toner contg. a binder resin and carbon. The amt. of the compd. to be used is usually 0.1-30, more pref. 0.15-15wt.% basing on the weight of the binder resin. Thus, an electrophotographic negative charge toner capable of providing distinct picture images contg. no stains in the tissue nor causing scattering of toner, is obtd. because the toner is not charged to reversed polarity even if it is used continuously in a repetitive development, nor the chargeability of frictional electricity of the toner is changed against changes of temp. or humidity. |
