Claims
- 1. A toner comprising a dry-blended or melt-blended mixture of resins selected from the group consisting of polystyrene, copolymers comprising styrene units and (meth)acrylic ester units, and mixtures thereof, 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 polydisperse resin comprising a mixture of at least a low molecular weight component having a peak molecular weight of about 3,000-50,000, making up about 60-95 wt % of the second polydisperse 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 polydisperse resin, said toner providing stable images, improved anti-offset properties and superior anti-blocking properties and fixability.
- 2. The toner of claim 1, further comprising a coloring agent(s) mixed therewith.
- 3. A method of manufacturing toner comprising polymerizing monomers selected from the group consisting of styrene monomers, (meth)acrylic ester monomers, and mixtures of styrene monomers with (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 second polydisperse resin, and mixing therewith 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 second polydisperse resin, and then dry-blending or melt-blending the second polydisperse resin with a first resin of a high molecular weight polymer selected from the group consisting of polystyrene, 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.
- 4. A method of manufacturing toner comprising mixing the toner produced by the method of claim 3, with a coloring agent(s).
Priority Claims (1)
Number |
Date |
Country |
Kind |
6-109890 |
May 1994 |
JPX |
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CROSS REFERENCE TO A RELATED APPLICATIONS
This is a divisional application of application Ser. No. 08/345,428 filed Nov. 21, 1994, now abandoned.
US Referenced Citations (6)
Divisions (1)
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Number |
Date |
Country |
Parent |
345428 |
Nov 1994 |
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