Toner, charge-imparting material and composition containing substituted guanidine compound.

摘要

A triboelectrically chargeable composition for use in development of electrostatic latent images. The composition contains a substituted guanidine compound having at least one substituent group. The substituted guanidine compound is preferably one represented by the formula
<Chemistry id="chema01" num="0001"><Image id="ia01" he="27" wi="44" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein R<Sup>1</Sup>, R<Sup>2</Sup>, R<Sup>3</Sup>, R<Sup>4</Sup> and R<Sup>5</Sup> are the same or different groups including hydrogen atom, alkyl, cycloalkyl, alkenyl, aryl, aralkyl, alkaryl, and heterocyclic groups, of which a hydrogen atom may be further replaced by a substituent group, and at least one of R', R<Sup>2</Sup>, R<Sup>3</Sup>, R<Sup>4</Sup> and R<Sup>5</Sup> is a group other than hydrogen. The composition is embodied typically as a positively chargeable toner and also as a charge-imparting material for charging a toner.