Aperture controling mechanism for image recording device

Abstract

An image recording device includes a base plate; a blade assembly; and a driving mechanism. The base plate is formed with a guiding slot and a first axle. The blade assembly includes a first blade and a second blade stacked on the base plate and hinged to the first axle. The first blade is formed with a first pivot slot thereon, which has two first inner walls formed apart oppositely. The second blade is formed with a second pivot slot thereon, which has two second inner walls formed apart oppositely. The distance between the two second inner walls is greater than the distance between the two first inner walls. The driving mechanism includes a pin member projected through the guiding slot, the first pivot slot, and the second pivot slot. The first and second blades are driven by the pin member. Thereby, the image recording device can be miniaturized.

Dependencies are inferred from the claim text.