Open/close member, holding device and image forming apparatus

A holding device for holding an openable and closable open/close member for a main assembly of a apparatus, said holding device comprising:

• an open/close member openably and closably mounted to the main assembly;
• an attraction member including a magnet and fixed on one of said open/close member and the main assembly;
• an attracted member fixed on a mounting surface provided on the other of said open/close member and the main assembly and including a magnetic member magnetically attractable by said magnet when said open/close member is in a closing position;
• wherein when said open/close member is in the closing position, said magnet and said magnetic member are opposed to each other in an opening and closing direction of said open/close member, and said attraction member and said attracted member are attracted to each other at an attraction plane;
• and
• a fastening member fastening said attracted member on said mounting surface,
• wherein said mounting surface is provided opposed to a surface of said attracted member disposed in a side opposite from said attraction plane, and said mounting surface and said attraction plane are inclined, and wherein a fixed position of said attracted member to said mounting surface is adjustable in a direction crossing with a line of intersection between a first plane parallel with said mounting surface and a second plane parallel with the attraction plane.