| abstract |
Novel squarylium compounds, a process for the production thereof as well as to a photoreceptor for electrophotography containing the squarylium compound are disclosed, said squarylium compounds being represented by formula (I): <IMAGE> (I) wherein R is a straight-chain alkyl group having 2 or more carbon atoms or -C2H4X, wherein X is a hydroxyl group, a halogen atom or the group -OR1 wherein R1 is an alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted phenyl group. |