Image forming apparatus with opening and closing door

1. An apparatus comprising:

a device that includes a driving source;

an opening and closing door that is opened and closed by rotational operation about a rotating shaft with respect to a body of the apparatus; and

an elastic part that is provided at the body of the apparatus, that is elastically deformed by contact with a first portion of a part of the opening and closing door on a side of the rotating shaft and blocks a gap between the first portion and the body of the apparatus when the opening and closing door is closed, and that is elastically deformed by contact with a second portion of the opening and closing door that is different from the first portion when the opening and closing door is opened,

wherein the apparatus is an image forming apparatus, and

wherein the elastic part in the open state inclines so that the second portion comes into contact with the surface of the elastic part parallel thereto.

2. The apparatus according to claim 1 ,

wherein the opening and closing door is a sheet tray that accommodates sheets, and

wherein the second portion of or the sheet tray in the open state inclines so that the second portion comes into contact with the surface of the elastic part parallel thereto.

3. The apparatus according to claim 2 ,

wherein a portion that sticks the elastic part to the body of the apparatus is parallel to the second portion when the sheet tray is opened.

4. The apparatus according to claim 2 ,

wherein the elastic part inclines toward the outside of a rotational track of the first portion so that a size of a portion where the first portion of the sheet tray comes into contact with the elastic part changes during the opening and closing operation of the opening and closing door.