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

Claim 0:
1. A digital printing system, comprising:
a flexible substrate configured to be moved and to receive ink droplets in a printing process that forms an image thereon, the 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;
an optical assembly, which is configured to illuminate the flexible substrate with light, to detect the light from the flexible substrate and to derive from the detected light a signal indicative of the periodic pattern from the interleaved first and second sets of fibers; and
a processor, which is configured to receive the signal and to: (i) calculate a ratio between the first and second elongations based on the signal, and (ii) monitor or control the digital printing system based on the periodic pattern as indicated by the signal.