Magnetic toner for pressure fixation
AssigneesHitachi Metals, Ltd., Mitsui Petrochemical Industries, Ltd.
InventorsMasumi Asanae, Koji Noguchi, Hideyuki Itoi, Katsumi Funakoshi
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Abstract
A magnetic toner for pressure fixation containing at least a resin and a magnetic powder as the main components, where the resin is a polymer essentially, containing methyl-1-pentene as the main component and having a softening point of at least 80.degree. C. and a compression yield strength of not more than 150 kg/cm.sup.2, has a good fixability under a low pressure and a good preservability at a high temperature.
Claims15
A magnetic toner having a saturation magnetization of 50-65 emu/q for pressure fixation, which comprises a resin and a magnetic powder having an average particle size of 0.1-3 .mu.m, the resin being a polymer, at least 70% by weight of said polymer being methyl-1-pentene, said polymer being the only polymer component in said toner, said polymer having a softening point of 80.degree. C.-160.degree. C. and a compression yield strength of not more than 150 kg/cm.sup.2.
Dependencies are inferred from the claim text.