Patent ID: 7094512

Claim:
An electrophotographic printing method which comprises using a negatively chargeable toner comprising a charge controlling agent comprising a monoazo iron complex compound of the formula (1) as an effective component, wherein A 1 , A 2 , B 1 and B 2 are respectively independently H, an alkyl group or a halogen atom, J is H, an alkali metal, NH 4 or an alkylammonium, they may be two or more kinds, X 1 and X 2 are respectively independently H, an alkyl group or a halogen atom, and Y 1 and Y 2 are respectively independently H, an alkyl group or an aromatic group which may have a substituent, provided that a case in which A 1 , A 2 , B 1 , B 2 , X 1 , X 2 , Y 1 , and Y 2 are hydrogen at the same time is excluded.