| 摘要 |
Since a charge amount of a toner and a charge rise characteristic thereof are liable to be influenced by the change in temperature and humidity condition, the change in image density occurs in printing, and in particular, in high temperature and high humidity environment, inconveniences, such as image fogging, occur due to non-uniformity of the charge amount distribution. In a toner including toner particles obtained by dispersing a monomer composition containing a polymerizable monomer and a colorant in an aqueous medium to form droplets and polymerizing the polymerizable monomer in the droplets, the toner particles contain a polymer formed by a polymerization reaction of the polymerizable monomer and a metal compound having a vinyl group. |
| 主权项 |
1. A toner comprising:
toner particles which are produced by a process including the steps of dispersing a monomer composition containing a polymerizable monomer and a colorant in an aqueous medium to form droplets and polymerizing the polymerizable monomer in the droplets, wherein each of the toner particles contains a polymer formed by a polymerization reaction of the polymerizable monomer and a metal compound having a vinyl group, and the metal compound having a vinyl group is a compound having a structure in which a site derived from —COOM1 and/or —OH of a salicylic acid portion or a salicylic acid derivative portion of an aromatic compound represented by the following formula (1) is boned to a metal where, in the formula, R1 represents a hydroxyl group, a carboxyl group, an alkyl group having 1 to 18 carbon atoms, or an alkoxy group having 1 to 18 carbon atoms, R2 represents a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 18 carbon atoms, or an alkoxy group having 1 to 18 carbon atoms, R3 represents a hydrogen atom or a methyl group, m is an integer of 1 to 3, n is an integer of 0 to 3 in which when n is 2 or 3, each R1 is independently selected, and M1 represents a hydrogen atom, an alkali metal, NH4, or a mixture thereof. |
