Method for developing electrical latent images
AssigneeCanon Kabushiki Kaisha
InventorsTetsuo Hasegawa, Katsumi Nagamatsu, Yoshihiro Nishikawa
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Abstract
A method for developing electrical latent images is disclosed in which electrically formed latent images are developed by using a mixture of at least two different toners having the same polarity. The two or more different kinds of toners in the mixture have a difference in triboelectric charge between them less that 10 .mu.c/g. Furthermore, developing is carried out by using a liquid developer containing a mixture of at least two different toners having the same polarity. Each of the toners in the mixture should have a Zeta-potential more than 50 mV in absolute value and the difference in Zeta-potential between the different kinds of toners should be less than 50 mV.
Claims16
A textile printing method comprising at least the steps of
- (i) mixing together at least two different component toners, each having the same polarity, and a dry carrier to obtain a dry developer and developing an electrical latent image with said dry developer;
- wherein the absolute value of the triboelectric charge of each component toner is more than 4 .mu.c/g and the difference in triboelectric charge between each component toner is less than 10 .mu.c/g;
- wherein each component toner comprises fine particles of 1-100 microns in size and is composed of a binder resin having a dye or pigment dispersed therein;
- and wherein the binder resin of each component toner is the same and wherein the dye or pigment of each component toner is different;
- (ii) transferring an amount of the resulting developed toner image onto a textile to provide an amount of transferred toner on said textile in the range of 0.5-1.5 mg/cm.sup.2 as the image portion, and
- (iii) dyeing the textile by using said transferring toner image.
A textile printing method comprising at least the steps of
- (i) developing an electrical latent image with a toner comprising a resin binder having dispersed therein from 1.25 to 30% by weight, based on the weight of said resin binder, of a dye and having a triboelectric charge, the absolute value of which is more than 4 .mu.c/g;
- (ii) transferring the resulting developed toner image onto a textile to provide an amount of transferred toner on said textile in the range of 0.5-1.5 mg/cm.sup.2 as the image portion;
- and
- (iii) dyeing said textile by using said transferred toner image.
Dependencies are inferred from the claim text.