Image-forming element for a printing apparatus with multiplex circuit for driving the image-forming electrodes

(19)

(11)

EP 1 679 560 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	02.08.2006 Bulletin 2006/31

(43)	Date of publication A2:
	12.07.2006 Bulletin 2006/28

(21)	Application number: 05111210.0

(22)	Date of filing: 24.11.2005

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International Patent Classification (IPC):

G03G 15/34^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK YU

(30)

Priority:

25.11.2004 EP 04106064

(71)	Applicant: Océ-Technologies B.V.
	5914 CC Venlo (NL)

(72)	Inventors:
	Van Acquoij, Catharinus 5802 BZ, Venray (NL) Van der Meer, René J. 5924 CS, Venlo (NL) Nijkamp, Aart 5916 NL, Venlo (NL) Lenczowski, Stanislaw K. J. 5583 CJ, Waarlre (NL) Wijngaards, David D.L. 5931 DS, Tegelen (NL) van Welie, Albert G.M. 5991 BM, Baarlo (NL) van Stiphout, Johannes G.V. 5741 CR, BEEK EN DONK (NL)

(74)	Representative: Vanoppen, Ronny R.J. et al
	Océ-Technologies B.V. Postbus 101 NL-5900 MA Venlo NL-5900 MA Venlo (NL)

(54)	Image-forming element for a printing apparatus with multiplex circuit for driving the image-forming electrodes

(57) The invention relates to an image-forming element (16) for a printing apparatus comprising a support structure (182) with thereon a plurality of electrodes (111,121,131;112,122,132) of a first type and an electronic control unit for energising electrodes. The image-forming element is further comprising a plurality of electrodes (161,162,163) of a second type, each one of said electrodes of the second type being arranged for interacting capacitively through a dielectric layer (158) with a number of electrodes of the first type forming a group (171,172,173), the electronic control unit comprising a first series of drivers for energising the electrodes of the first type, each one of said drivers being suited for energising one electrode of the first type within each group and a second series of drivers for energising individually the electrodes of the second type, the first and second series of drivers being arranged such that the electrodes of the first type can be individually activated image wise.

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