Capsule toner

A capsule toner comprising a core covered with an outer shell, said outer shell comprising a substance capable of forming a radical, a polymer consisting of at least one unit of a polymerized quaternary ammonium salt-containing vinyl monomer represented by formula (I) being deposited on the surface of said outer shell, and basic carbon black being externally added to said capsule toner:

• ##STR7## wherein R.sub.1 represents a hydrogen atom or a methyl group;
• R.sub.2, R.sub.3, and R.sub.4 each represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a benzyl group;
• Y represents --COO--, --CONH-- or a phenylene group;
• n represents an integer of from 1 to 7;
• and X.sup.- represents a halogen ion or an anion having a --COO.sup.- group or an -SO.sub.3.sup.- group.

A capsule toner comprising a core covered with an outer shell, said outer shell comprising a substance capable of forming a radical, a polymer consisting of at least one unit of a polymerized quaternary ammonium salt-containing vinyl monomer represented by formula (I) and at least one unit of a polymerized monomer selected from the group consisting of (meth)acrylic acids, (meth)acrylic esters, aliphatic vinyl esters, vinyl ethers, vinyl ketones, and aromatic vinyl compounds, being deposited on the surface of said outer shell, and basic carbon black being externally added to said capsule toner:

• ##STR8## wherein R.sub.1 represents a hydrogen atom or a methyl group;
• R.sub.2, R.sub.3, and R.sub.4 each represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a benzyl group;
• Y represents --COO--, --CONH-- or a phenylene group;
• n represents an integer of from 1 to 7;
• and X.sup.- represents a halogen ion or an anion having a --COO.sup.- group or an --SO.sub.3.sup.- group.