Laser printer

Abstract

Abstract PURPOSE:To obtain a high-speed, high-quality printer of a high freedom by using a liquid crystal element in the pattern mask for forming printing figure and letters for a printer using laser as a light source. CONSTITUTION:An object 3 to be irraqdiated is put on the extended line of light path connecting a laser source 1 and a pattern mask 2. Usually, on the light path of the pattern mask 2 and the object 3 to be irradiated, a mirror 4 or prism 4' for polarizing the light path and/or an optical lens 5 for focusing are set. For the pattern mask 2, a display element such as a segment type liquid crystal element, dot type liquid crystal element, or high-resolution type liquid crystal element is used. A potential is applied from a control power source 6 in such a way as to make the liquid crystal impervious to light only in the region where laser needs not to be passed in the liquid crystal portion 2. Figures and letter patterns to be printed can be simply controlled electrically, permitting figures and letters to be smoothly selected.

Inventors

• 👤 Koichi Hirata
• 👤 弘一 平田
• 👤 Toshio Morishige
• 👤 森重　季夫

Bibliographic Details