Electrostatic imaging apparatus and facsimile apparatus employin

Details Electrostatic imaging apparatus and facsimile apparatus employin Electrostatic imaging apparatus and facsimile apparatus employin

1992-03-25

1994-07-26

Fuller, Benjamin R.

Facsimile and static presentation processing

Facsimile

Recording apparatus

4301066, 430109, H04N 123, G03G 9083, G03G 9087

Patent

active

053330595

ABSTRACT:
The present invention provide a toner for developing an electrostatic image. The toner comprises a binder resin and a coloring agent. The binder resin comprises a styrene type binder resin. The amount of an aldehyde contained in the binder resin is not more than 0.005% by weight based on the weight of the toner. The binder resin is produced by a process comprising the steps of preparing a monomer composition comprising a polymerizable monomer containing at least not less than 50% by weight of a styrene monomer, and a polymerization initiator, and subjecting said monomer composition to suspension polymerization in an aqueous medium having dissolved oxygen in an amount of not more than 2.5 mg/lit to form a styrene polymer or copolymer containing an aldehyde monomer in an amount of not more than 0.01% by weight.

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patent: 4966829 (1990-10-01), Yasuda
patent: 5126224 (1992-06-01), Hyosu et al.

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