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US 2014/0033938 A1Published application
Colour Proofing Apparatus and Method
AssigneeBobst Bielefeld GmbH
InventorsGordon Whitelaw, Wolfgang Brusdeilins
Life of this patent
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Abstract
A colour proofing apparatus, including an engraved roller (12) having a pattern of ink accommodating cavities on its peripheral surface, a back pressure cylinder (14) forming a nip with the engraved roller (12), a conveyor (16) adapted to feed a sheet (18) of a print substrate through the nip in synchronism with the movements of the peripheral surfaces of the engraved roller (12) and the back pressure cylinder (14), and an optical sensor (30) disposed at the conveyor (16) for measuring a colour value of the sheet (18) that has passed through the nip.
Claims14
A colour proofing apparatus, comprising:
- an engraved roller having a pattern of ink accommodating cavities on a peripheral surface thereof,
- a back pressure cylinder forming a nip with the engraved roller,
- a conveyor adapted to feed a sheet of a print substrate through said nip in synchronism with movements of the peripheral surface of the engraved roller and the back pressure cylinder, and
- an optical sensor disposed at the conveyor for measuring a colour value of the sheet that has passed through the nip.
1 more element
Dependencies are inferred from the claim text.