Patent ID: 8787814

Claim:
An image forming apparatus comprising: an image forming apparatus main body; an option sheet feeding apparatus including a sheet cassette that stores sheets and a sheet feeding portion that feeds the sheets stored in the sheet cassette, that is added to a bottom of the image forming apparatus main body; a sound insulation member that is provided between the image forming apparatus main body and a mounting surface on which the image forming apparatus is mounted and which is detachably attached to the bottom of the image forming apparatus main body so as to shield a noise in the image forming apparatus main body when the option sheet feeding apparatus is not added to the image forming apparatus, wherein the sound insulation member is an elongated member that extends substantially along a width of the image forming apparatus main body; and a recess that extends substantially along the width of the image forming apparatus main body and that is provided on an upper surface of the option sheet feeding apparatus so that the sound insulation member can enter the recess when the option sheet feeding apparatus is added to the image forming apparatus in state that the sound insulation member is not detached from the image forming apparatus main body.