Abstract: A start code detecting apparatus comprises a data inputting unit which inputs PES data, a start code searching unit which searches for a code of a predetermined byte included in the PES data inputted by the data inputting unit, a separated start code estimating unit which refers to a stream located next to a code of a predetermined byte searched by the start code searching unit and estimates whether there is a separated ES start code or not based on the reference result, and a data outputting unit which outputs predetermined data. The start code searching unit generates location data which represents a location of the PES start code or the ES start code based on the searching result and the estimation result of the separated start code estimating unit. The data outputting unit outputs the location data generated by the start code searching unit.

Abstract: The present invention provides an electrophotographic photoreceptor having a uniform film, in which the electrical characteristics are not deteriorated over an extended period of time without causing abrasion, scratches and film defects on the surface of the photoreceptor by the contact with toner, a developer, paper and a cleaning blade and which can repeatedly be used. The electrophotographic photoreceptor has a conductive support and a photoconductive layer provided on the above conductive support, and the photoconductive layer contains a charge-generating material, a charge-transporting material and a binder resin having no or one glass transition point.