Patent ID: 7609403
Filing Date: 2009-10-27
Classification: G03G,G06F,G06K

Abstract:
1. A printing device which is connected to a network and which executes a print job, using any of multiple recording agent cartridges mounted therein, comprising: an active user information setting module that sets a primary user for each of the multiple recording agent cartridges and a secondary user for at least one of the recording agent cartridges, as active user information; a residual amount deficiency detection module that detects residual amount deficiency of toner for each of the multiple recording agent cartridges; an active recording agent cartridge setting module that, when a print job with user identification information is received from a user via the network, specifies a main recording agent cartridge for which the user is the primary user based on the active user information and the user identification information received with the print job, wherein in case where residual amount deficiency is not detected with respect to the main recording agent cartridge by said residual amount deficiency detection module, said active recording agent cartridge setting module sets the specified main recording agent cartridge as an active recording agent cartridge for print execution; and in case where residual amount deficiency is detected with respect to the main recording agent cartridge, said active recording agent cartridge setting module specifies secondary recording agent cartridges for which the user is a secondary user based on the active user information and the user identification information and sets one of the specified secondary recording agent cartridge as the active recording agent, and said printing device further comprising a print job execution module that executes the print job using the active recording agent cartridge; and a recording agent usage information storage module that stores recording agent usage information that includes cartridge identification information for identifying a main recording agent cartridge for which a user is the primary user, user identification information for identifying a user, and recording agent usage amount relation information relating to the amount of recording agent used in a print job, when the print job is executed by said print job execution module using the secondary recording agent cartridge as the active recording agent cartridge; wherein said active recording agent cartridge setting module, prior to the detection of residual amount deficiency with respect to the main cartridge by said residual amount deficiency detection module, judges whether recording agent usage information with respect to the main recording agent cartridge is stored in the recording agent usage information storage module, based on the cartridge identification information of the main recording agent cartridge, in case where recording agent usage information with respect to the main cartridge is stored in said recording agent usage information storage module, determines a recording agent cartridge for which a user corresponding to the user identification information included in the recording agent usage information is the primary user, based on the active user information and the recording agent usage information, and sets the determined recording agent as the active recording agent cartridge, and in case where recording agent usage information with respect to the main cartridge is not stored in said recording agent usage information storage module, determines whether the residual amount deficiency is detected with respect to the main recording agent cartridge to set the active recording agent cartridge.