Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Process of making developer composition
Reexamination Certificate
2006-10-10
2006-10-10
Chapman, Mark A. (Department: 1756)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Process of making developer composition
C430S137190, C430S109400, C399S331000, C399S328000
Reexamination Certificate
active
07118843
ABSTRACT:
A toner having high mechanical strength and being capable of exhibiting a sufficient fixing property in a wide temperature range, and a method for manufacturing such a toner are provided. Further, a fixing device and an image forming apparatus in which such a toner can be suitably used are also provided. The method for manufacturing a toner comprises a step of spreading a dispersion liquid, in which a dispersoid containing polyester-based resin is dispersed in a dispersion medium, into a laminar flow by pressing it against a smooth surface using a gas flow and then jetting the dispersion liquid in the form of fine particles and a step of solidifying the fine particles of the dispersion liquid while they are being conveyed in a solidifying section. The polyester-based resin includes block polyester mainly composed of a block copolymer, and amorphous polyester having crystallinity lower than that of the block polyester. The block polyester has a crystalline block obtained by condensation of a diol component with a dicarboxylic acid component, and an amorphous block having crystallinity lower than that of the crystalline block.
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Chapman Mark A.
Sughrue & Mion, PLLC
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