Exposure apparatus and image forming apparatus

• Main Author: IMOTO YOSHIYA
• Format: Patent
• Language: Chinese; English
• Published: 28.09.2011
• Subjects: CINEMATOGRAPHY; CORRECTION OF TYPOGRAPHICAL ERRORS; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; MAGNETOGRAPHY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHOTOGRAPHY; PHYSICS; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS

The invention relates to an exposure apparatus and an image forming apparatus. The exposure apparatus includes: a scanning optical system; a light concentrating section that concentrates lights by the scanning optical system on the photosensitive surface and adjusts a light concentrating position to a light traveling direction; a light receiving device to which lights having different light sources are guided and emitted from a part of a light movement range with scanning to receive separately the lights, including light receiving parts to detect a received light quantity, where an optical path length to the light receiving part is greater than that to the photosensitive surface for a part of the lights passing through on the light receiving parts and is smaller for another part of the lights; and a light concentrating position adjusting section that uses the function of the light concentrating section to adjust the light concentrating position by the light concentrating section based on the received light qu