Detecting device, detecting method, and image forming apparatus

摘要

Abstract A detecting device (200) includes a detecting unit that 5 detects an image on a medium (P) transported in a transport path (60). The detecting unit includes a light emitter (202), a light receiver (204), and a light adjusting portion (224). The light emitter (202) emits light toward the transport path (60) in which the medium (P) is transported. 10 The light receiver (204) receives reflected light of the light emitted from the light emitter (202). The light adjusting portion (224) adjusts a quantity of light received by the light receiver (204) according to a quantity of light emitted from the light emitter (202). C)-- -Y--- C] CN io