Abstract: An information recording method includes: acquiring plural pieces of file information; acquiring plural pieces of additional information accompanying the acquired pieces of file information; storing the acquired pieces of file information in first or second storage area each having a predetermined capacity for storing the file information. If the pieces of additional information on the acquired pieces of file information indicate the acquired pieces of file information are required to be stored in time order, the acquired pieces of file information are stored into the first storage area in the order of pieces of time information contained in the respective pieces of additional information. If a file capacity of one of the acquired pieces of file information is larger than an empty capacity of the first storage area, the one of the acquired pieces of file information is stored into the second storage area.

Abstract: An information recording method includes: acquiring plural pieces of file information; acquiring plural pieces of additional information accompanying the acquired pieces of file information; storing the acquired pieces of file information in first or second storage area each having a predetermined capacity for storing the file information. If the pieces of additional information on the acquired pieces of file information indicate the acquired pieces of file information are required to be stored in time order, the acquired pieces of file information are stored into the first storage area in the order of pieces of time information contained in the respective pieces of additional information. If a file capacity of one of the acquired pieces of file information is larger than an empty capacity of the first storage area, the one of the acquired pieces of file information is stored into the second storage area.

Abstract: A processing request control device, which includes: a reception section that receives a processing request and information on a property of the processing request; a calculation section that calculates a processing time zone based on the processing request; a management section that manages the processing request and the processing time zone associated with each other; a processing implementation control section that controls to implement, based on the processing request, the processing from a processing start time; a specification section that, when a new processing request is received, specifies a processing request being managed whose processing time zone overlaps with a processing time zone of the newly received processing request; and a change section that changes at least one of the processing time zone of the specified processing request and that of the new processing request within a range based on the properties of the processing request.

Abstract: In a backup system for a printer control device, the important data in the printer control device is formed into a file of important data, and the file of important data thus formed is backed up by a memory such as a file server, a mail server or a floppy disk, so that, when the important data is erased from the printer control device, the file of important data is read from the memory and stored in the printer control device, whereby the important data can be restored quickly and accurately, and the leakage of confidential data can be positively prevented.