Flexible document processing method and related equipment

A method for regulating an alignment of flexible documents comprising:

• moving the flexible documents along a direction of advancement, so said flexible documents are brought to detection organs configured to detect an orientation of each of said flexible elements,
• detecting, by said detection organs, an orientation of each of said flexible documents as a first alignment detection phase;
• applying a torque to each of said flexible documents, to align said flexible documents;
• in response to said detection organs detecting an orientation of a banknote different from a preset orientation, performing a first alignment phase of each of said flexible documents by alignment organs, by rotating each of said flexible documents;
• detecting an orientation of each of said flexible documents exiting from said alignment organs as a second alignment detection phase by additional detection organs,
• in response to said additional detection organs detects an orientation of the banknote different from the preset orientation:
• varying actuation parameters of said alignment organs until each of said flexible documents is still engaged with said alignment organs or is engageable by said alignment organs, and
• performing a second alignment phase of each of said flexible documents via said alignment organs, rotating each of said flexible documents based on the changed actuation parameters.