A subject for the invention is to provide an electrophotographic photoreceptor substrate which can be easily produced with high productivity and prevents the occurrence of image defects. The sensor is configured to operate under an operation mode in which the unit detection elements are sequentially selected or a standby mode in which the unit detection elements are not selected. The stent may be cloth-covered and may be a single element or may be made in three separate elements for a three cusp valve, each element having a cusp portion and two commissure portions; adjacent commissure portions for each pair of adjacent stent element combining to form the stent commissures. The fastening nut is releasably retained on the bracket for holding the nut prior to engagement with the fastener. 0 wt % based on the weight of the modified starch. An imaging composition is coated on a work piece followed by applying a sufficient amount of energy from a 3-D imaging system to form an image on the coated work piece.