Claims
- 1. A toner resin composition comprising a dry-blended or melt-blended mixture of resins selected from the group consisting of polystyrene and copolymers comprising styrene units and (meth)acrylic ester units, said mixture comprising a first resin of a high molecular weight resin having a peak molecular weight of about 100,000-4,000,000, or a gel content of about 20% or more, and a second resin comprising a homogeneous single-phase polymer mixture of at least a low molecular weight component having a peak molecular weight of about 3,000-50,000, said low molecular weight component making up about 60-95 wt % of the second resin and a high molecular weight component having a peak molecular weight of about 100,000-4,000,000, making up about 5-40 wt % of the second resin.
- 2. A method of manufacturing a toner resin composition comprising polymerizing monomers selected from the group consisting of styrene monomers, (meth)acrylic ester monomers, and mixtures of styrene monomers and (meth)acrylic ester monomers to produce a low molecular weight polymer having a peak molecular weight of about 3,000-50,000, making up about 60-95 wt % of a polydisperse resin, and mixing therewith to form a homogeneous single-phase polymer a high molecular weight polymer selected from the group consisting of polystyrene, copolymers comprising styrene units and (meth)acrylic ester units, and mixtures thereof, and having a peak molecular weight of about 100,000-4,000,000, making up about 5-40 wt % of the polydisperse resin, and then dry blending or melt blending the polydisperse resin with a resin of a high molecular weight polymer selected from the group consisting of polystyrene and copolymers comprising styrene units and (meth)acrylic ester units, and mixtures thereof, having a peak molecular weight of about 100,000-4,000,000, or a gel content of about 20% or more.
Priority Claims (1)
Number |
Date |
Country |
Kind |
6-109890 |
May 1994 |
JPX |
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CROSS REFERENCE TO A RELATED APPLICATION
This is a Continuation-in-part patent application of application Ser. No. 08/345,428 filed Nov. 21 1994, now abandoned. U.S. Pat. No. 08/503,804 (now 5,658,991) is an F.W.C. of 08/345,428.
US Referenced Citations (6)
Continuation in Parts (1)
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Number |
Date |
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Parent |
345428 |
Nov 1994 |
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