摘要:
Disclosed herein is an electrostatic image-developing toner comprising particles of a toner precursor particles composed of at least a resin and a colorant, and powder of a compound represented by the following formula (I):M.sup.1 y.sub.1.M.sup.2 y.sub.2.M.sup.3 x.(OH).sub.2.Ax/n.mH.sub.2 O(I)(wherein M.sup.1 is at least one of the divalent metals selected from the group consisting of Mg, Ca, Sr and Ba; M.sup.2 is at least one of the divalent metals selected from the group consisting of Zn, Cd, Pd and Sn; M.sup.3 is a trivalent metal; A is an anion of n valency; x, yl, yz and m are the positive numbers satisfying the relations of 0
摘要:
Disclosed is a method for producing a toner for developing electrostatic images, which comprises the steps of kneading a mixture of raw materials comprising at least a resin and a colorant, cooling the kneaded mixture, pulverizing the cooled mixture, classifying the pulverized mixture, and feeding a fine powder separated by the classification step to a melt of the mixture of raw materials in the middle of the kneading step. The toner has improved fixability, durability and storage stability, with which stable and high-quality images are obtained even by continuous copying operation.
摘要:
A novel toner for developing electrostatic images is disclosed, which comprises at least a resin and a granulated carbon black having a grain hardness of 2 g or less as starting raw materials blended therein. In addition, a novel process for the production of the novel toner is described.
摘要:
Disclosed is a carrier for the development of an electrostatic image comprising a magnetic metal or oxide thereof incorporated therein as a core material, the core material being coated with a resin, wherein the following relationships (1) and (2) are satisfied:0.5.times.10.sup.-2 .ltoreq.Wc/Wo.ltoreq.1.6.times.10.sup.-2(1)1.0.times.10.sup.-2 .ltoreq.C.multidot.Wc/(Wo+Wc).ltoreq.4.3.times.10.sup.-2(2)wherein Wc is the weight (g) of the resin coated on the carrier core material; Wo is the weight (g) of the carrier core material; and C is the carbon concentration (mg/g) in the carrier.