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:
Jun. 10, 1997
Filed:
Jun. 27, 1996
Konica Corporation, , JP;
Abstract
Disclosed is a developer for electrophotography, comprising a carrier and toner particles, wherein said carrier comprises a magnetic particle having thereon a resin coated layer, said magnetic particle including Fe.sub.2 O.sub.3 and an oxide compound of at least one kind of a light metal selected from the group consisting of lithium, beryllium, sodium, magnesium, potassium, calcium and rubidium, and wherein said toner particles have a compound represented by Formula (1), wherein an amount (g) of the compound on the surface (m.sup.2) of said toner particles, is 3.0.times.10.sup.-3 to 1.2.times.10.sup.-2 g/m.sup.2. : ##STR1## wherein, R.sup.1 through R.sup.4 independently represents an alkyl group having a carbon atom number of 1 to 18 or a benzyl group, A.sup.- represents an anion, provided that at least one of R.sup.1 through R.sup.4 represents an alkyl group having a carbon atom number of 8 to 18.