摘要:
An electrophotographic developing powder comprising a resin, a coloring agent and a compound of the following formula, as a charge-controlling agent: ##STR1## wherein X is sodium or potassium, and M is a chromium or cobalt atom.
摘要:
An electrophotographic toner effective for producing clear visible images, comprises a binder resin, and a charge-controlling and coloring agent comprising at least one 2:1 type metal complex of the formula (I): ##STR1## wherein M is Cr or Co, n is 1 or 2, Y is H or a radical of the formula (II): ##STR2## wherein X is H, a halogen, a lower alkyl, a lower alkoxy or a nitro and m is 1, 2 or 3.
摘要:
An electrophotographic toner capable of being electrified negatively comprising:(a) a binder resin; and(b) a charge-controlling and coloring agent comprising at least one 2:1 type metal complex of the formula (I): ##STR1## where each of X.sub.1 and X.sub.2, which may be the same or different, is a hydrogen atom, a C.sub.1 -C.sub.5 alkyl group, a C.sub.1 -C.sub.5 alkoxy group, a nitro group or a halogen atom, each of m and m' is an integer of 1 to 3, each of R.sub.1 and R.sub.2, which may be the same or different, is a hydrogen atom, a C.sub.1 -C.sub.5 alkyl group, a C.sub.1 -C.sub.5 alkoxy group, a halgen atom, a nitro group, a sulfonamide group, a methylsulfonyl group, an ethylsulfonyl group, an acetyl amino group or a benzoyl amino group, each of n and n' is an integer of 1 to 3, Y.sup..sym. is an ammonium ion, an aliphatic ammonium ion, an alicyclic ammonium ion or a heterocyclic ammonium ion, and M is a chromium atom, a cobalt atom or an iron atom.
摘要:
Disclosed herein is an electrostatic image developing toner, which comprises a binder resin, a colorant and a charge control agent, wherein the charge control agent is a hydrophobicity-imparted product of a xanthene-type dye, which is represented by the formula ##STR1## wherein R.sub.1, R.sub.3, R.sub.5, R.sub.6 and R.sub.7 are independently hydrogen or a lower alkyl group, R.sub.2 and R.sub.4 are independently a lower alkyl group, and A is a group represented by the formula ##STR2## in which R.sub.8 is a C.sub.8-37 alkyl group, or the formula ##STR3## in which R.sub.9 is a C.sub.1-37 alkyl group, and X is O, S, NH or CH.sub.2, and is contained in a proportion of 0.05 to 10 parts by weight per 100 parts by weight of the binder resin.
摘要:
A metal complex compound having the formula: ##STR1## wherein each of X.sub.1 and X.sub.2 which may be the same or different, is a nitro group, a halogen atom, a phenylazo group (inclusive of a substituted phenylazo group) or a naphthylazo group (inclusive of a substituted naphthylazo group), each of n.sub.1 and n.sub.2 which may be the same or different, is an integer of from 1 to 3, each of R.sub.1 and R.sub.2 which may be the same or different, is an amino group, a monoalkylamino group, a dialkylamino group, an acetylamino group and a benzoylamino group (inclusive of a substituted benzoylamino group), M is a chromium atom, an iron atom, a cobalt atom, m is an integer of at least 2, and y.sup.m.sym. is a bivalent or higher polyvalent metal ion. The metal complexes are useful as near infrared absorbers.
摘要:
Provided is a toner for electrophotography, comprising a binder resin, a colorant and a charge control agent; said charge control agent comprising an aluminum compound represented by the following formula: ##STR1## wherein R.sub.1 represents an alkyl group, a cycloalkyl group or an aralkyl group; R.sub.2 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, a hydroxyl group or an alkoxyl group; n represents an integer of 2 or 3; and M represents a hydrogen atom, an alkali metal, or an ammonium, aliphatic ammonium or alicyclic ammonium ion.
摘要:
A zinc benzoate compound represented by the following general formula: ##STR1## wherein R.sub.1 represents an alkyl or aralkyl group; and R.sub.2 and R.sub.3, independently from each other, each represent an alkyl, aralkyl, aryl, alkoxy or acyl group, an amino group which may be substituted, a nitro group or a halogen atom. The compound of the general formula (1) is colorless, highly stable and has excellent dispersibility in a binder resin for an electrophotographic toner, and can impart excellent frictional electrification properties to a toner, therefore being useful particularly as a charge control agent for an electrophotographic toner.
摘要翻译:由以下通式表示的苯甲酸锌化合物:其中R 1表示烷基或芳烷基; R 2和R 3彼此独立地表示烷基,芳烷基,芳基,烷氧基或酰基,可被取代的氨基,硝基或卤素原子。 通式(1)的化合物是无色的,高度稳定的并且在电子照相调色剂的粘合剂树脂中具有优异的分散性,并且可以赋予调色剂优异的摩擦带电特性,因此特别用作电子照相的电荷控制剂 墨粉