Electrostatic copying apparatus having an easily removable photosensitive drum

An electrostatic copying apparatus comprising:

• a casing including a lower casing section and an upper casing section pivotably connected to one end of said lower casing section for movement between an open position and a closed position;
• a photosensitive drum;
• support means attached to said upper casing section for releasably supporting said photosensitive drum in said upper casing section;
• and
• guide means attached to said lower casing section and extending between a first position under said support mechanism on one side of said casing and a second position at an end of said casing on a side opposite said one side, for guiding said photosensitive drum after removal from said support means between said first and second positions, said guide means including a pair of rails each continuously extending between a position adjacent to said first position and said second position, said rails having guide surfaces inclined relatively to the rotating axis of said photosensitive drum, said guide surfaces being in point-contact with the bottom edges of the end faces of said photosensitive drum to support said drum.