Self-Illumination scanner apparatus

摘要

An illumination light-emitting member is made up of an LED group obtained by connecting a plurality of LEDs in series with each other, and illuminates the surface to be sensed including an image. A solid-state image sensing element receives light reflected by the surface to be sensed illuminated by the illumination light-emitting member, and outputs a corresponding sensed image signal. A drive circuit controls driving of the solid-state image sensing element to sense the image. A booster circuit serves as a power supply circuit for the LED group, and generates a high voltage by adding a predetermined power supply voltage in the apparatus, and a frequency-divided pulse obtained by frequency-dividing a predetermined pulse output from the drive circuit.