US 6,453,809 B2Granted

Squeegee device

AssigneeStork Brabant B.V.

InventorHenricus Gerardus M. Kempen

Life of this patent

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Abstract

Squeegee device for applying printing medium to a substrate, interacting with a squeegee element which is made at least partially from a magnetizable material and can be moved between an operating position and an at-rest position, which squeegee device comprises a support frame for delimiting an operating space, inside which the operating position of the squeegee element is located, and magnetic means which are provided on the support frame for generating a magnetic field at the location of a designated bearing-wall part of the support frame in order to pull the squeegee element onto the bearing-wall part in the at-rest position, in which device switching means are provided, which interact with the magnetic means in order to apply the magnetic field at the location of the bearing-wall part in a switched-on position and to substantially eliminate the magnetic field at the location of the bearing-wall part in a switched-off position.

Claims22

Dependent claims

Squeegee assembly for use in a screen printing device for applying printing medium to a substrate, comprising:

a squeegee element comprising a magnetizable material and a squeegee element positioning device interactable with said squeegee element, said squeegee element positioning device comprising:
(a) a support frame;
and
(b) a switchable first magnetic means provided on said support frame;
wherein said squeegee element is movable between an operating position and an at-rest position with respect to said support frame;
and
(c) a switching means for switching said first magnetic means between a switched-on position and a switched-off position, wherein said switched-on position is defined as the state in which said first magnetic means apply or generate a magnetic field at a location of a designated bearing-wall part of said support frame in order to pull said squeegee element onto said bearing-wall part in said at-rest position, and further wherein said switched-off position is defined as the state in which said magnetic field from said first magnetic means is substantially eliminated or removed at the location of said bearing-wall part of said support frame in order to give said squeegee element the freedom to move in said operating position.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/755,434Filed 5 Jan 2001 · continuation
Priority: NL 10119927 May 1999
Published: US 2001/0018870 A16 Sep 2001
Granted: 24 Sep 2002
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

B41F 35/004
For screen printers or parts thereof: for cylindrical screens
B41F 15/426
Comprising squeegees or doctors: the squeegees or doctors being magnetically attracted
B41F 15/46
Squeegees or doctors: with two or more operative parts
B41F
Printing machines or presses