image recording device

Abstract

Abstract PURPOSE:To set the proper quantity of laser light according to a photosensitive body by setting beam power according to the wavelength of a semiconductor laser and setting laser beam power according to the photosensitive body. CONSTITUTION:A signal from a logical circuit 38 is impressed to a level switching circuit 41. The circuit 41 switches a voltage to be impressed to a light source 16 among a low, an intermediate, and a high level according to plural specific signals to switch the small, intermediate, and large quantities of pre- exposure of the photosensitive body. On the other hand, the plural specific signals are impressed to a level switching circuit 42 which switches the output level of a power source 39 for driving the laser 1L. Then, a low, an intermediate, and a high level current corresponding to the signals are impressed to a laser driving circuit 44 after their levels are corrected corresponding to the wavelength of the beam. Namely, the amounts of laser exposure of the photosensitive body is increased as the wavelength of the laser beam becomes longer. Thus, the proper quantity of laser light is set according to the photosensitive body.

Inventors

• 👤 Masaharu Okubo
• 👤 大久保　正晴
• 👤 Yoshihiro Murasawa
• 👤 村沢　芳博
• 👤 Yasumasa Otsuka
• 👤 康正 大塚
• 👤 Atsushi Asai
• 👤 淳 浅井

Bibliographic Details