Patent ID: 11899387
Assignee: BROTHER KOGYO KABUSHIKI KAISHA
Field: Computer technology (Electrical engineering)
Classification: CPC G  B | IPC G

Claim 18:
19. A method for controlling an image-forming device to perform a printing process according to a mode, the image-forming device including: a frame; a drum cartridge detachably attached to the frame, the drum cartridge having a photosensitive drum; and a developing cartridge detachably attached to the frame, the developing cartridge having a housing configured to accommodate therein toner, the method comprising:
determining, based on life information for the drum cartridge, whether replacement of the drum cartridge is necessary; and
switching the mode of the printing process between a normal printing mode and an extended printing mode, the normal printing mode allowing the image-forming device to perform the printing process when the replacement of the drum cartridge is determined to be unnecessary in the determining, the extended printing mode allowing the image-forming device to perform the printing process on a condition that the developing cartridge attached to the frame is not replaced with another developing cartridge in a state where the replacement of the drum cartridge is necessary,
wherein the extended printing mode includes a normal extended mode and a limited extended mode, the normal extended mode allowing the image-forming device to perform the printing process with a charge bias same as a charge bias in the normal printing mode and a feeding speed same as a feeding speed in the normal printing mode, the limited extended mode allowing the image-forming device to perform the printing process with a charge bias lower than a charge bias in the normal printing mode and a feeding speed slower than a feeding speed in the normal printing mode.