The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2002
Filed:
Dec. 07, 2000
Other;
Abstract
Toner used for electrophotography includes a polylactic acid type biodegradable resin and a terpene-phenol copolymer. The molar concentration of one of the L-lactic acid units and D-lactic acid units in a lactic acid component of the polylactic acid type biodegradable resin is in the range between about 75 mol % and about 98 mol %. The terpene-phenol copolymer may include at least one composition selected from the group consisting of: (a) cyclic terpene-phenol copolymer, prepared by copolymerizing cyclic terpene and phenol; (b) cyclic terpene/phenol (1:2 molar ratio) addition product, prepared by adding two molecules of phenol to one molecule of cyclic terpene (c) polycyclic terpene/phenol (1:2 molar ratio) addition product, prepared by a condensation reaction of the cyclic terpene/phenol (1:2 molar ratio) addition product with one of aldehyde and ketone, and (d) polycyclic terpene/phenol (1:1 molar ratio) addition product, prepared by a condensation reaction of a cyclic terpene/phenol (1:1 molar ratio) addition product with one of aldehyde and ketone. The toner of the invention is applicable to a full-color toner.