CRUM CHIP, IMAGE FORMING DEVICE FOR VERIFYING CONSUMABLE UNIT COMPRISING THE CRUM CHIP, AND METHODS THEREOF

摘要

Provided herein is an image forming device including a main body; a consumable unit detachable from and attachable to the main body, and including a CRUM chip; a storage which stores a detection list including information on counterfeit CRUM chips and a conversion serial information list including a plurality of conversion serial information each of which is converted from serial information stored in the CRUM chip according to a plurality of different predetermined rules; and a controller to limit use of the consumable unit, when verifying the consumable unit based on at least one of the detection list and the conversion serial information list fails.

主权项

1. A Customer Replaceable Unit Monitoring (CRUM) chip comprising:
a memory to store a detection list including information on counterfeit CRUM chips, serial information, and a conversion serial information list including pieces of conversion serial information converted from the serial information according to a plurality of different predetermined rules; an interface configured to perform communication with a controller installed in a main body of an image forming device; and a central processing unit (CPU) configured to provide the detection list and the conversion serial information list to the controller of the main body.