Colour Proofing Apparatus and Method

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 syn...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BRUSDEILINS WOLFGANG, WHITELAW GORDON
Format:	Patent
Sprache:	eng
Schlagworte:	INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES,TYPEWRITERS, AND TO STAMPS LINING MACHINES PERFORMING OPERATIONS PRINTING PRINTING MACHINES OR PRESSES STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	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.