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US 2006/0216632 A1Published application
Process for producing toner
AssigneeXerox Corporation
InventorsVictor Berko-Boateng, Hui Chang, John Laing
Life of this patent
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Abstract
A waste toner reclamation process includes collecting waste toner, screening the collected waste toner, meltmixing the screened waste toner with a second toner, and extruding, grinding and classifying the mixed toner product, wherein the collected waste toner comprises a mixture of different colored toner particles.
Claims20
A process comprising:
- collecting waste toner;
- screening the collected waste toner;
- meltmixing the screened waste toner with a second toner, and
- extruding, grinding and classifying the mixed toner product,
- wherein the collected waste toner comprises a mixture of different colored toner particles.
2 more elements
A process comprising:
- collecting waste toner from at least one xerographic printing machine, wherein the collected waste toner comprises a mixture of different colored toner particles;
- screening the collected waste toner to remove extraneous debris and to afford screened waste toner;
- extruding in an extruder apparatus, in a weight ratio of about 1 to about 20 weight percent, the screened waste toner in admixture with a second toner comprising a resin and a colorant, to provide a mixed product;
- and
- grinding and classifying the melt mixed product to provide remanufactured toner particles with a glass transition temperature of about 53° to about 58° F.
2 more elements
A process comprising:
- collecting waste toner from at least one printing machine, wherein the collected waste toner comprises a mixture of different colored toner particles;
- screening the collected waste toner to remove extraneous debris to afford screened waste toner;
- and
- combining the screened waste toner with fresh toner constituents comprising a resin and a colorant, and wherein said combining is accomplished at a stage in toner manufacturing processing selected from the group consisting of pellet grinding, external additive blending, and screening, to provide remanufactured toner particles.
1 more element
Dependencies are inferred from the claim text.