Patent ID: 7660548

Claim:
An image processing device comprising: a first rotating member configured to selectively rotate between a first open position and a first closed position; a second rotating member configured to selectively rotate between a second open position and a second closed position; a first actuator configured to rotate in sync with the first rotating member; a second actuator configured to rotate in sync with the second rotating member; and a light sensor comprising: a light emitter configured to emit a light; and a light receptor positioned opposite the light emitter, wherein the light receptor is configured to receive the light from the light emitter, and a space is formed between the light emitter and the light receptor, wherein the first actuator is selectively positioned within the space and outside of the space based on the position of the first rotating member, and the second actuator is selectively positioned within the space and outside of the space based on the position of the second rotating member, wherein the light sensor detects whether the first rotating member is in the first open position or the first closed position based on whether the first actuator is positioned within the space or outside of the space, and the light sensor detects whether the second rotating member is in the second open position or the second closed position based on whether the second actuator is positioned within the space or outside of the space.