Light source control apparatus for image input device, has invertor control circuit controlling current flowing in cold cathode fluorescent lamp based on feedback signal from charge coupled device

摘要

Charge coupled device (12) reads the document by receiving the reflected light from the document irradiated by a cold cathode fluorescent lamp (11). Invertor control circuit (16) controls the current flowing in the cold cathode fluorescent lamp based on the feedback signal from the charge coupled device.