Binary developer
AssigneeHitachi Metals, Ltd.
InventorsMasumi Asanae, Masahisa Ochiai, Tsutomu Saitoh
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Abstract
A binary developer is composed of a carrier and a magnetic toner. The carrier consists of nonspherically formed magnetic particles having an average diameter of 5 to 100 .mu.m, preferably 5 to 50 .mu.m. The magnetic toner is formed to have an average particle diameter of 10 .mu.m or less and a saturated magnetization .sigma..sub.s of 50 emu/g or less.
Claims5
A binary developer comprising a mixture of a carrier consisting of nonspherically formed magnetic particles, the magnetic particles having an average diameter of 5 to 100 .mu.m, and a magnetic toner having an average particle diameter of 10 .mu.m or below,
- wherein the magnetic toner comprises a fixing resin and 10 saturation magnetization (.sigma..sub.s) of 50 emu/g or less, and wherein to 60 wt. % of a magnetic powder, and has a the mixture consists of 10 to 90 wt. % of the magnetic toner.
Dependencies are inferred from the claim text.