Process for perforating printed or embossed substrates
AssigneeThe Procter & Gamble Company
InventorsJonathan Lee Price, Prabhath Kiran Nanisetty
Life of this patent
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Abstract
A process for registering lines of termination with indicia in a transported sheet of web material is disclosed. The process provides for the steps of: (a) transporting the sheet of web material in a first direction; (b) applying indicia to the sheet from a print cylinder, the print cylinder having a first angular position; (c) imparting lines of termination to the sheet of web material with a rotatable blade, the rotatable blade having a second angular position; (d) calculating a position error by comparing the first angular position of the print cylinder and the second angular position of the rotatable blade; and, (e) adjusting the second angular position of the rotatable blade according to the position error.
Claims20
A process for registering lines of termination with indicia in a transported sheet of web material, the process comprising the steps of:
- (a) transporting said sheet of web material in a first direction;
- (b) applying indicia to said sheet from a print cylinder, said print cylinder having a first angular position;
- (c) imparting lines of termination to said sheet of web material with a rotatable blade, said rotatable blade having a second angular position;
- (d) calculating a position error by comparing said first angular position of said print cylinder and said second angular position of said rotatable blade;
- and,
- (e) adjusting said second angular position of said rotatable blade according to said position error.
A process for registering lines of termination with indicia in a transported sheet of web material, the process comprising the steps of:
- (a) transporting said sheet of web material in a first direction;
- (b) applying indicia to said sheet of web material from a print cylinder, said print cylinder having a first angular position;
- (c) imparting lines of termination to said sheet of web material with a perforation cylinder, said perforation cylinder having a second angular position, said lines of termination being spaced from said indicia in a spacing;
- (d) calculating a position error by comparing said first angular position of said print cylinder and said second angular position of said perforation cylinder;
- and,
- (e) adjusting said second angular position of said perforation cylinder according to said position error in order to maintain said spacing within a desired range.
A process for registering lines of termination with indicia in a transported sheet of web material, the process comprising the steps of:
- (a) transporting said sheet of web material in a first direction;
- (b) applying indicia to said sheet of web material from at least a first print cylinder having a first angular position;
- (c) imparting lines of termination to said sheet of web material with at least a first perforation cylinder having a second angular position, wherein said indicia and said lines of termination are disposed upon said sheet of web material relative to each other such that an indicia/lines of termination registration is created;
- (d) measuring an angular position of a first print cylinder and translating said position into a digital signal;
- (e) measuring an angular position of a first perforation cylinder and translating said position into a digital signal;
- (f) comparing said digital signal of said first print cylinder and said digital signal of said first perforation cylinder to provide a position error;
- and,
- (g) correcting said angular position of said first perforation cylinder according to said position error in order to maintain said indicia/lines of termination registration within a desired range.
Dependencies are inferred from the claim text.