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:
Apr. 18, 1995
Filed:
Jul. 14, 1993
Chiemi Matsushima, Moriguchi, JP;
Tetsuji Kihara, Takatsuki, JP;
Shun-ichiro Yamanaka, Hirakata, JP;
Kazuaki Sukata, Yawata, JP;
Orient Chemical Industries, Ltd., Osaka, JP;
Abstract
A charge control agent for positive charging whose active ingredient is a salt-forming compound represented by the following formula and a positively chargeable toner for developing electrostatic images comprising at least one kind of the charge control agent, a coloring agent and a resin. ##STR1## wherein X represents an alkyl group, a cycloalkyl group, a substituted or unsubstituted phenyl group, or --COR.sup.5 in which R.sup.5 is a lower alkyl group; Z represents a hydrogen, a hydroxyl group or an alkyl group; R.sup.1 and R.sup.3 independently represent an alkyl group having 1 to 18 carbon atoms or a benzyl group; R.sup.2 represents an alkyl group having 5 to 18 carbon atoms; and R.sup.4 represents an alkyl group having 1 to 4 carbon atoms or a benzyl group.