Gasket for a doctor blade chamber
AssigneeTresu A/S
InventorChristian Fogh-Hansen
Life of this patent
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Abstract
For sealing between a doctor blade chamber (3) and a rotatable roller (16, 23) in a printing unit, there is provided a gasket (4) having an elastomeric edge (17, 18) for sealing abutment against the roller. The gasket includes a rigid/supporting rail (7) which during operational conditions of the printing unit bears against the roller together with the elastomeric edge or which is spaced apart from the roller.
Claims20
A printing unit with a doctor blade chamber and a rotatable roller where the roller extends partially into the doctor blade chamber for receiving ink from the doctor blade chamber during operation, where a non-self-lubricating gasket is provided for sealing between the doctor blade chamber and the roller, where the gasket at one side has a sealing surface for sealing abutment against a bottom of the doctor blade chamber, and where the gasket at a side opposite the sealing surface has an elastomeric edge for sealing abutment against the roller, wherein the gasket is in the form of a single unit comprising an embedded rigid/supporting rail which during operational condition of the printing unit has a spacing between the rail and the roller of between 0 mm and 7 mm.
A non-self-lubricating gasket for sealing between a doctor blade chamber and a rotatable roller in a printing unit, where the gasket has a body with a sealing surface for sealing abutment against a bottom of the doctor blade chamber, and where the gasket at a side opposite the sealing surface has an elastomeric edge for sealing abutment against the roller, wherein the gasket is in the form of a single unit comprising an embedded rigid/supporting rail for supporting the elastomeric edge, where the rigid/supporting rail is fixed to the elastomeric edge, and where the rail extends from the body and to the elastomeric edge.
A printing unit with a doctor blade chamber and a rotatable roller where the roller extends partially into the doctor blade chamber for receiving ink from the doctor blade chamber during operation, where a non-self-lubricating gasket is provided for sealing between the doctor blade chamber and the roller, where the gasket at one side has a sealing surface for sealing abutment against a bottom of the doctor blade chamber, and where the gasket at a side opposite the sealing surface has an elastomeric edge for sealing abutment against the roller, wherein the gasket is in the form of a single unit comprising an embedded rigid/supporting rail, wherein the embedded rigid/supporting rail is between 0 mm and 7 mm from the roller during operation and where the rigid/supporting rail is fixed to the elastomeric edge by one of glue and chemical bonding.
A non-self-lubricating gasket for sealing between a doctor blade chamber and a rotatable roller in a printing unit, where the gasket has a body with a sealing surface for sealing abutment against a bottom of the doctor blade chamber, and where the gasket at a side opposite the sealing surface has an elastomeric edge for sealing abutment against the roller, wherein the gasket is in the form of a single unit comprising an embedded rigid/supporting rail for supporting the elastomeric edge, and wherein the embedded rigid/supporting rail is spaced apart from the elastomeric edge such that the elastomeric edge project farther from the body than the rail.
Dependencies are inferred from the claim text.