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US 5,628,250 AGranted
Chamber doctor blade assembly
AssigneeKoenig & Bauer-Albert Aktiengesellschaft
InventorNorbert G. Weisbrod
Life of this patent
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Abstract
A chamber doctor blade assembly includes axially spaced lateral cheeks that seal the ends of the ink reservoir. Each of these lateral cheeks has a sealing face that conforms to the curvature of the screen roller with which the chamber doctor blade is used. These sealing faces are provided with lubricant reservoirs. The lateral faces also have leading edges bent or flared out to form strippers which remove excess beads of ink from the screen roller.
Claims4
A chamber doctor blade assembly of an inking unit of a rotary printing press provided with a screen roller comprising:
- a base body having upper faces and first and second end faces;
- first and second doctor blades secured to said upper faces of said base body and having free ends engageable with a surface of the screen roller;
- first and second lateral cheeks secured to said first and second end faces of said base body, said base body, first and second doctor blades and first and second lateral cheeks defining an ink reservoir extending in an axial direction of the screen roller;
- a sealing face on each of said first and second lateral cheeks, each said sealing face having a shape adapted to a curvature of the screen roller;
- and
- a depression acting as a lubricant pocket in each sealing face of each said lateral cheek, said depression being in fluid communication with said ink reservoir, said depression being formed by a slit-shaped cut extending across said sealing face.
3 more elements
Dependencies are inferred from the claim text.