G - Physics
03
G
96/51
G03G 9/083 (2006.01)
Patent
CA 2039290
ABSTRACT OF THE DISCLOSURE A magnetic toner for electrophotography having stable triboelectric chargeability under various environmental conditions may be provided by using magnetic iron oxide particles having a moderately high surface FeO content, specified by the following conditions: (a) a dissolved Fe (II) content in dissolved total iron of 14 - 33.3 wt. % at a dissolved total iron percentage of 5 ? 1 wt. %, (b) a dissolved Fe (II) content in dissolved total iron of 17 - 33.3 wt. % at a dissolved total iron percentage of 10 ? 1 wt. %, and (c) a dissolved Fe (II) content in dissolved total iron of 18 - 33.3 wt. % at a dissolved total iron percentage of 15 ? 1 wt. %.
Akashi Yasutaka
Sakashita Kiichiro
Tanikawa Hirohide
Taya Masaaki
Uchiyama Masaki
Canon Kabushiki Kaisha
Ridout & Maybee Llp
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