Temperature controlled LED recording head

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EP 0 629 508 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	11.01.1995 Bulletin 1995/02

(43)	Date of publication A2:
	21.12.1994 Bulletin 1994/51

(21)	Application number: 94304265.5

(22)	Date of filing: 13.06.1994

(51)	International Patent Classification (IPC)⁵: B41J 2/45, B41J 29/377

(84)	Designated Contracting States:
	BE DE FR GB IT NL

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Priority:

18.06.1993 EP 93304770

(71)	Applicant: XEIKON NV
	B-2640 Mortsel (BE)

(72)	Inventors:
	De Cock, Etienne Marie B-2650 Edegem (BE) De Schamphelaere, Lucien Amedé B-2650 Edegem (BE) Grobben, Alfons Jakob B-3001 Heverlee (BE)

(74)	Representative: Gambell, Derek
	D Gambell & Co, Keeley House Business Centre, 22/30 Keeley Road Croydon, Surrey CR0 1TE Croydon, Surrey CR0 1TE (GB)

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References cited: :

(54)	Temperature controlled LED recording head

(57) A recording head comprises a linear array of light-emitting diodes (LEDs) on a common thermally conductive LED carrier bar (30). The carrier bar carries a series of modules, each module containing N LEDs with their associated drivers. The carrier bar is provided with a cooling means in thermally conductive contact therewith. The cooling means comprises a U-shaped duct inside a thermally conductive body (50) in thermally conductive contact with the carrier bar (30), said duct extending between a fluid inlet and a fluid outlet. The duct (57) has flowing therethrough a cooling fluid such as water.

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