Replaceable sub-assemblies for electrostatographic reproducing machines

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(11)

EP 0 532 308 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	15.06.1994 Bulletin 1994/24

(43)	Date of publication A2:
	17.03.1993 Bulletin 1993/11

(21)	Application number: 92308204.4

(22)	Date of filing: 10.09.1992

(51)	International Patent Classification (IPC)⁵: G03G 15/00

(84)	Designated Contracting States:
	DE FR GB

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Priority:

11.09.1991 GB 9119483

(71)	Applicant: XEROX CORPORATION
	Rochester New York 14644 (US)

(72)	Inventors:
	Le Sueur, Eric John Wembley, Middlesex HA9 9QH (GB) Taylor, Shelley May Stevenage, Hertfordshire SG2 8SZ (GB) Less, Krzysztof Jerzy Ealing, London W13 8NQ (US) Collins, Robin Ashley Biggleswade, Bedfordshire SG18 9NJ (GB)

(74)	Representative: Reynolds, Julian David et al
	Rank Xerox Ltd Patent Department Parkway Marlow Buckinghamshire SL7 1YL Marlow Buckinghamshire SL7 1YL (GB)

(56)

References cited: :

(54)	Replaceable sub-assemblies for electrostatographic reproducing machines

(57) In an electrostatographic printing/copying machine, the developer device for developing electrostatographic latent images with toner is located in a replaceable sub-assembly, or cassette. The sub-assembly is provided with a programmable memory which is connected with the machine when the sub-assembly is inserted therein. The memory receives and stores an input from the machine representing the usage of the sub-assembly. The memory indicates that usage to the machine and at least one operating parameter of the machine is adjusted accordingly.

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