CRUM chip and image forming device for authentication and communication, and methods thereof

(19)

(11)

EP 2 746 859 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	03.06.2015 Bulletin 2015/23

(43)	Date of publication A2:
	25.06.2014 Bulletin 2014/26

(21)	Application number: 13177300.4

(22)	Date of filing: 19.07.2013

(51)

International Patent Classification (IPC):

G03G 15/08^(2006.01)

G03G 21/18^(2006.01)

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
	Designated Extension States:
	BA ME

(30)

Priority:

24.12.2012 KR 20120152433
30.04.2013 KR 20130048712

(71)	Applicant: Samsung Electronics Co., Ltd
	Gyeonggi-do 443-742 (KR)

(72)	Inventors:
	Lee, Jae-yoon Seoul (KR) Woo, Hong-rok Yongin-si (KR)

(74)	Representative: Appleyard Lees
	15 Clare Road Halifax HX1 2HY Halifax HX1 2HY (GB)

(54)	CRUM chip and image forming device for authentication and communication, and methods thereof

(57) A Customer Replaceable Unit Monitoring (CRUM) chip (210), an image forming apparatus, and a method of authenticating are provided. The apparatus includes a main body (100) that includes a main controller (110) controlling operations of the apparatus, a consumable unit (200) mounted on the main body to communicate with the main controller, and a CRUM chip that is provided in the consumable unit and stores information regarding the consumable unit. The main controller and the CRUM chip transmit and receive signals that include data and integrity detection data between each other. The integrity detection data is generated by accumulating and examining integrity detection data included in a previous signal.

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