Abstract: A modified charge control agent composition comprising a metal compound (A) of aromatic hydroxycarboxylic acid bonded with a metal atom selected from a zirconium atom, a calcium atom, an aluminum atom, a chromium atom, a boron atom, and a zinc atom via at least one of an ionic bond, a covalent bond, and a coordinate bond; and at least one inorganic pigment (B), wherein the pigment (B) is contained in an amount of from 1 to 20 parts by mass in 100 parts by mass of the composition. The modified charge control agent composition exhibits a high charge-imparting effect, and an electrostatic image developing toner that contains the charge control agent composition will have a high electrostatic charge amount and a high environmental stability.

Abstract: The present invention provides a modified charge control agent composition exhibiting a high charge-imparting effect, and an electrostatic image developing toner containing such a charge control agent composition and having a high electrostatic charge amount and an environmental stability. A composition comprising a metal compound (A) of aromatic hydroxycarboxylic acid having an aromatic hydroxycarboxylic acid bonded with a metal atom selected from a zirconium atom, a calcium atom, an aluminum atom, a chromium atom, a boron atom and a zinc atom via at least any of ionic bond, covalent bond and coordinate bond; and at least one inorganic pigment (B), wherein the pigment (B) is contained in an amount of from 1 to 20 parts by mass in 100 parts by mass of the composition.

Abstract: The present invention provides a modified charge control agent composition exhibiting a high charge-imparting effect, and an electrostatic image developing toner containing such a charge control agent composition and having a high electrostatic charge amount and an environmental stability. A composition comprising a metal compound (A) of aromatic hydroxycarboxylic acid having an aromatic hydroxycarboxylic acid bonded with a metal atom selected from a zirconium atom, a calcium atom, an aluminum atom, a chromium atom, a boron atom and a zinc atom via at least any of ionic bond, covalent bond and coordinate bond; and at least one inorganic pigment (B), wherein the pigment (B) is contained in an amount of from 1 to 20 parts by mass in 100 parts by mass of the composition.

Abstract: A friction charge-providing member for positively-chargeable toner is disclosed, which comprises a parent material having provided at least on the surface thereon a compound represented by formula (I) as a charge-controlling agent: ##STR1## wherein A and A' may be the same or different and each independently represents a hydrogen atom, a halogen atom, a nitro group, an alkyl group having 1 to 18 carbon atoms which may contain a substituent(s), an alkenyl group, an acyl group, a sulfonic acid group, a sulfamoyl group, a N-substituted sulfamoyl group, an alkylsulfonyl group having 1 to 5 carbon atoms, a carboxyl group, an alkylester group having 1 to 5 carbon atoms, a hydroxyl group, an alkoxyl group having 1 to 18 carbon atoms, an amino group, and a N-substituted amino group; B and B' may be the same or different and each independently represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 18 carbon atoms which may contain a substituent(s), an alkenyl group, an amino group, a N-substituted amin

Abstract: The present invention provides an electrophotographic toner free of metal such as chromium. A novel electrostatic image developing toner is provided, comprising as a charge-controlling agent one or more selected from the group consisting of compounds represented by formulae (I) and (II): ##STR1## wherein A, B and R are as defined in the specification.

Abstract: An electrostatic image developing toner containing a compound of the following formula (1): ##STR1## wherein X is ##STR2## (wherein D is a hydrogen atom or an electron donating group, and each of R.sub.1 and R.sub.2 which are independent of each other, is a hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxy group, an aryl group, an aralkyl group, a hydroxyl group, an amino group, a dialkylamino group, a diarylamino group, a diaralkylamino group, a halogen atom, a halogen-substituted alkyl group, a halogen-substituted aryl group, a cyano group, a formyl group, a carboxyl group, a carbamoyl group, an N-substituted carbamoyl group, an alkoxycarbonyl group, an acyloxy group, an acyl group, an arylcarbonyl group, a nitro group, a sulfonic acid group, an alkylsulfonyl group, a substituted sulfonyl group, a sulfamoyl group, an N-substituted sulfamoyl group or a substituted sulfinyl group, provided that when D is a hydrogen atom, R.sub.1 and R.sub.

Abstract: An electrophotographic toner containing a compound of the following formula (1): ##STR1## wherein X is awherein A is an electron attractive group, and each of R.sub.1 and R.sub.2 which are independent of each other, is a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an alkoxy group, an aryl group, an aralkyl group or a hydroxyl group, or R.sub.1 and R.sub.2 together form a ring), ##STR2## wherein A, R.sub.1 and R.sub.2 are as defined above), or ##STR3## wherein A, R.sub.1 and R.sub.2 are as defined above), and Y is a hydrogen atom, an alkyl group or an aryl group.

Abstract: An electrostatic image developing toner containing at least one compound selected from the group consisting of sulfonylurea compounds of the following formula (1): ##STR1## wherein A is a phenyl group which may have a substituent, or a naphthyl group which may have a substituent, and each of B and C which are independent of each other, is a hydrogen atom, an alkyl group, a phenyl group which may have a substituent, or a naphthyl group which may have a substituent, or B and C together form a ring; or the following formula (2):D--SO.sub.2 NHCONH--X--NHCONHSO.sub.2 --E (2)wherein each of D and E which are independent of each other, is an alkyl group, a phenyl group which may have a substituent, or a naphthyl group which may have a substituent, and X is a phenylene group which may have a substituent, a biphenylene group which may have a substituent, or a naphthylene group which may have a substituent.

Abstract: An electrophotographic toner containing a compound of the following formula (I): ##STR1## wherein each of X and Y which are independent of each other, is a hydrogen atom, ##STR2## (wherein each of D.sub.1 and D.sub.2 is a hydrogen atom or an electron donating group, provided that D.sub.1 and D.sub.2 are not simultaneously hydrogen atoms, R.sub.1 is a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, an acyl group, a nitro group, a cyano group or R.sub.2 SO.sub.2 -- (wherein R.sub.2 is a hydroxyl group, an amino group, an alkyl-substituted amino group, an alkyl group, a cycloalkyl group, an aralkyl group, an aryl group or an alkoxy group), and n is 0, 1 or 2, provided that when n is 2, the plurality of R.sub.1 may be the same or different), ##STR3## (wherein D.sub.3 is an electron donating group, and R.sub.1 and n are as defined above), ##STR4## (wherein D.sub.3, R.sub.1 and n are as defined above), ##STR5## (wherein D.sub.3, R.sub.

Abstract: An electrophotographic toner containing a compound of the following formula (I): ##STR1## wherein each of X and Y which are independent of each other, is a hydrogen atom, ##STR2## (wherein each of A.sub.1 and A.sub.2 is a hydrogen atom or an electron attracting group, provided that A.sub.1 and A.sub.2 are not simultaneously hydrogen atoms, R.sub.1 is a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, an alkoxy group, a dialkylamino group, a diarylamino group, a diaralkylamino group or a hydroxyl group, and n is 0, 1 or 2, provided that when n is 2, the plurality of R.sub.1 may be the same or different), ##STR3## (wherein A.sub.3 is an electron attracting group, and R.sub.1 and n are as defined above), ##STR4## (wherein A.sub.3, R.sub.1 and n are as defined above), ##STR5## (wherein A.sub.3, R.sub.1 and n are as defined above) or ##STR6## (wherein A.sub.3 is as defined above, and each of R.sub.2 and R.sub.