Difference unit
AssigneeHewlett-Packard Development Company, L.P.
InventorFrank Perdicaro
Life of this patent
Estimating the term…
Abstract
A difference unit may include a first sensor to identify a position of a first mark printed on a first web output from a first web press, a second sensor to identify a position of the first mark of the first web, a third sensor to identify a position of a second mark printed on a second web, and a synchronization engine to determine a synchronization difference between the first web and the second web based on the identification of the first mark and second mark as sensed by the second sensor and the third sensor.
Claims15
A difference unit for synchronizing between two web presses, comprising:
- a first sensor to identify a position of a first mark printed on a first web output from a first web press;
- a second sensor to identify a position of the first mark of the first web;
- a third sensor to identify a position of a second mark printed on a second web;
- and
- a synchronization engine to determine a synchronization difference between the first web and the second web based on the identification of the first mark and second mark as sensed by the second sensor and the third sensor.
A system for synchronizing two web presses, comprising:
- a first web press to output a first web, the first web press comprising a first precision repeat device;
- a second web press to output a second web;
- the second web press comprising a second precision repeat device;
- and
- a difference unit comprising:
- a first sensor to identify a position of a first mark printed on the first web;
- a second sensor to identify position of the first mark of the first web;
- a third sensor to identify a position of a second mark printed on the second web;
- and
- a synchronization engine to determine a synchronization difference between the first web and the second web based on the identification of the first mark and second mark as sensed by the second sensor and the third sensor.
A method for synchronizing two web presses, comprising:
- with a first precision repeat device of a first web press, dynamically adjusting a size of a gap between frames on a first media web;
- with a second precision repeat device of a second web press, dynamically adjusting a size of a gap between frames on a second media web;
- with a difference engine:
- identifying, with a first sensor, a position of a first mark printed on the first media web;
- identifying, with a second sensor, the position of the first mark;
- identifying, with a third sensor, the position of a second mark printed on the second media web;
- determining a synchronization difference between the first media web and the second media web based on the identification of the first mark and the second mark as sensed by the second sensor and the third sensor;
- and
- sending a synchronization difference to the first web press and the second web press.
Dependencies are inferred from the claim text.