OPTICAL SCANNING DEVICE AND IMAGE FORMING DEVICE

• Main Authors: IMAI SHIGEAKI, HAYASHI YOSHIAKI, NAKAJIMA TOMOHIRO
• Format: Patent
• Language: English
• Published: 22.03.2007
• Subjects: CORRECTION OF TYPOGRAPHICAL ERRORS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS

PROBLEM TO BE SOLVED: To provide an optical scanning device capable of well reducing color shading or color shift and enabling high-speed image output even while reducing a number of light sources. SOLUTION: In the optical scanning device scanning a plurality of different surfaces to be scanned by a light beam from a single light source, a light beam quantity is different according to a main scanning directional position (an image height) on the surface to be scanned due to the influences such as the absorption inside of a lens through the light beam passes to the surface to be scanned and the incident angle property of Fresnel reflection and the incident angle property of the a light path folding mirror which is subjected to reflecting coating and the scattering due to the roughness of a mirror surface. Color shading is generated in the output image when the shading property is different in the plurality of surfaces to be scanned. In order to suppress the above problems, light amount correcting data is changed determining the light emitting amount of the light source according to light scanning positions of the main scanning directions in each scanning surface to be scanned by the light beam from the single light source by arranging a light amount correcting means. COPYRIGHT: (C)2007,JPO&INPIT