Compositions – Magnetic – With wax – bitumen – resin – or gum
Reexamination Certificate
2007-03-13
2007-03-13
Koslow, C. Melissa (Department: 1755)
Compositions
Magnetic
With wax, bitumen, resin, or gum
C264S429000
Reexamination Certificate
active
10686617
ABSTRACT:
In a developing device for an image forming apparatus of the present invention, use is made of a magnetic molding produced by compression-molding a magnet compound material in a magnetic field. The magnet compound material contains, in addition to magnetic powder and fine, thermoplastic resin grains that are major components, at least one of a pigment and a charge control agent.
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Imamura Tsuyoshi
Kakegawa Mieko
Kamiya Noriyuki
Kamoi Sumio
Koetsuka Kyohta
Koslow C. Melissa
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh & Company, Ltd.
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