Patent ID: 9235185
Filing Date: 2016-01-12
CPC Classification: G03G,H05K

Claim Text:
1. An image forming apparatus comprising: a shield case in which a circuit board mounted with an electric circuit is contained, wherein the shield case includes: an electrical conductive case main body having an aperture formed in a part of one face and an electrical conductive lid member having one end turnably supported by the case main body and the other end fastened to the case main body by a screw when the aperture is closed, the case main body and lid member have an engaged part and an engaging part engaged with each other when the aperture is closed, wherein the engaging part is formed so as to clamp the engaged part, the shield case is configured so that contact force between the engaging part and engaged part is increased, if the screw is rotated in a fastening direction when the aperture is closed, wherein one of the engaged part and engaging part has a plate piece and the other of the engaged part and engaging part has a clamping piece clamping the plate piece, and the plate piece is a supporting member supporting the circuit board to the case main body.