Abstract: A history storage device includes: a storage unit that, in storing first history information including phenomenon information corresponding to a phenomenon having occurred and accompanying information accompanying the phenomenon information in a storage region, when the phenomenon information included in the first history information is duplication of phenomenon information included in second history information having already been stored in the storage region, deletes the phenomenon information included in the first history information and stores, in the storage region, the accompanying information which is included in the first history information and is associated with the phenomenon information; and a reconstruction unit that, in reading out the first history information from the storage region, based on the phenomenon information with which the accompanying information included in the first history information is associated, reconstructs the deleted phenomenon information, to thereby reconstruct the firs

Abstract: An image processing apparatus includes a print information acquisition unit that acquires a plurality of pieces of print information of each print job to be performed on an image forming unit configured to form an image on a recording material, the plurality of pieces of print information divided by a predetermined number of parallel processes and arranged in ascending or descending discrete page order, a command analyzing unit that command-analyzes the acquired print information, a rasterizing unit that rasterizes the command-analyzed print information to generate raster data, and a concatenating unit that concatinates the generated raster data in a consecutive page order. The print image acquisition unit, the command analyzing unit, and the rasterizing unit perform parallel processes thereof on the print information.

Abstract: A history storage device includes: a storage part that stores information; a device status information obtaining unit that obtains device status information related to a status of an image forming apparatus in forming an image, the image forming apparatus including an image forming part that forms the image corresponding to an image forming instruction; and an association unit that, when the image forming instruction satisfies a preset condition, associates the image forming instruction with the device status information obtained by the device status information obtaining unit when the image corresponding to the image forming instruction is formed, and causes the storage part to store the associated image forming instruction and device status information.

Abstract: A history storage device includes: a storage unit that, in storing first history information including phenomenon information corresponding to a phenomenon having occurred and accompanying information accompanying the phenomenon information in a storage region, when the phenomenon information included in the first history information is duplication of phenomenon information included in second history information having already been stored in the storage region, deletes the phenomenon information included in the first history information and stores, in the storage region, the accompanying information which is included in the first history information and is associated with the phenomenon information; and a reconstruction unit that, in reading out the first history information from the storage region, based on the phenomenon information with which the accompanying information included in the first history information is associated, reconstructs the deleted phenomenon information, to thereby reconstruct the firs