| 摘要 |
PROBLEM TO BE SOLVED: To accurately position a photoreceptor drum to a developing unit or the like provided in a unit cover. SOLUTION: The processing unit has the photoreceptor drum in which holding holes are formed on a pair of end surface parts, a photoreceptor case which has a pair of end wall parts, in which fitting holes are formed at a location of the end wall parts on a straight line connecting the end wall parts, and a photoreceptor drum is arranged on the straight line on which each fitting hole is located, a pair of holding members in which a first shaft part to be fitted into the fitting holes of the pair of end wall parts of the photoreceptor case, and a second shaft part inserted into the holding holes of the photoreceptor drum are integrally formed on a straight line, and a engagement part is formed in the first shaft part, and the unit cover in which positioning parts are formed at locations of a pair of end plate parts on a straight line connecting the end plate parts, the photoreceptor case is arranged on the straight line where each positioning part is located between a pair of the end plate parts, and the positioning parts engages with the engagement parts of the holding member. |
