EXPOSURE DEVICE

• Main Author: KAWAHARA HIROSHI
• Format: Patent
• Language: English
• Published: 25.04.1990
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; CINEMATOGRAPHY; CORRECTION OF TYPOGRAPHICAL ERRORS; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; MAGNETOGRAPHY; PERFORMING OPERATIONS; PHOTOGRAPHY; PHYSICS; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS

PURPOSE:To improve exposure speed and to reduce in size an exposure device by feeding a photosensitive medium at a predetermined speed, and moving the image of exposure means having a plurality of lines at a speed having a predetermined relationship to a predetermined speed. CONSTITUTION:Feeding means 7 feeds a photosensitive recording medium 3 at a predetermined speed in a direction shown by an arrow A. A lamp 1 directs a light toward exposure means 2. Control means 4 turns ON pixels of liquid crystal shutters 2 corresponding to 'ABC', and generates image lights of 'ABC'. Further, the means 4 turns ON, OFF the pixels to move the image of 'ABC' synchronously with the feeding speed of the medium 3 in a direction of an arrow B. As a result, the image lights 'ABC' focused on the medium 3 move through a lens 5 at the same speed in the same direction, even if the medium 3 is moved, upon movement of the medium. Accordingly, the image lights are always moved while irradiating the same parts of the medium 3.