Rotogravure cylinder proofing method

Details Rotogravure cylinder proofing method Rotogravure cylinder proofing method

1987-07-14

1988-07-26

Fisher, J. Reed

Printing

Intaglio

Processes

101153, B41F 900, B41F 2904

Patent

active

047592850

ABSTRACT:
A method for conducting a proofing operation of a rotogravure printing cylinder includes preparation of a steel drum having in sequence from the outer steel surface a layer of plastic such as Mylar.RTM., a blanket consisting of a rubber composite material, a paper/foil layer with the foil side facing outwardly, and a proofing sheet consisting of normal printing paper. The rotogravure cylinder which is to be proofed is brought into contact with the thus-prepared drum, and a high voltage is applied to the foil via the proofing sheet. The rotogravure cylinder is inked and rotated through one printing revolution so that a complete impression is made on the proofing sheet. The high voltage assists in the transfer of ink from the cups of the rotogravure cylinder to the proofing sheet. The impression produced by the rotogravure cylinder can then be checked before the rotogravure cylinder is sent to a user.

REFERENCES:
patent: 2520504 (1950-08-01), Hooper
patent: 2558900 (1951-07-01), Hooper

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