Patent ID: 11921454
Assignee: LANDA CORPORATION LTD.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC G  B | IPC B  G

Claim 9:
10. A method for controlling a digital printing system, the method comprising:
illuminating with light a movable flexible substrate that receives ink droplets in a printing process that forms an image thereon, the movable flexible substrate comprising: (i) a fabric having first and second sets of fibers interleaved with one another in accordance with a periodic pattern and a first elongation obtained when applying a given tension to the moving flexible substrate, and (ii) a seam for coupling between edges of the fabric, wherein the seam has a structure other than the periodic pattern, wherein, when applying the given tension to the moving flexible substrate, the seam has a second elongation different from the first elongation;
detecting the light from the flexible substrate and deriving from the detected light a signal indicative of the periodic pattern from the interleaved first and second sets of fibers;
calculating a ratio between the first and second elongations based on the signal; and
monitoring or controlling the digital printing system based on the periodic pattern as indicated by the signal.