Patent ID: 6765605
Filing Date: 2004-07-20
Classification: B41J,G02B

Abstract:
A split scanning optical apparatus that includes a plurality of split scanning units for performing scanning within split areas split in a main scanning area and performs exposure for one-time main scanning by performing scanning at the same time by the plurality of split scanning units, the split scanning optical apparatus comprising:an image information split part that is provided with overlap areas in scanning areas of the split scanning units, an identical portion on a surface to be scanned being exposable mutually in the overlap areas, and splits image information to be provided by exposure to a surface to be scanned into split image information to be provided respectively by the split scanning units; a plurality of storage parts that respectively store the split image information; a plurality of address specification parts that respectively specify storage addresses to the storage parts; and a store operation control part that controls a store operation of the storage parts so that a split position of the image information falls in an overlapping range of the plurality of storage parts specified by the address specification parts, wherein the store operation control part is a store operation switching part that, when two of said address specification parts are busy, cancels a store operation on split image information A to a storage part thereof and switches to a store operation on split image information B to a storage part thereof, wherein the two pieces A and B of split image information each contain identical image information in the overlap area and one of the address specification parts controls a store operation on the split image information A to the storage part thereof and the other controls a store operation on the split image information B to the storage part thereof.