Ƙayyadaddun ƙayyadaddun ƙayyadaddun shi shine 0. 12 mm, kuma ana iya daidaita kauri na layin bisa ga ainihin buƙatar. An ƙaddara wannan ta kayan da aka yi amfani da su a cikin FFC, layin layi na FFC ya ƙunshi nau'i biyu na fim din rufi, masu jagorancin matsa lamba na tsakiya, don haka kauri na kebul na ribbon IT = + + kauri mai kauri na fim ɗin akan kauri na fim ɗin, kauri na fim ɗin da aka saba amfani da shi shine: 0. 043 mm, 0. 060 mm, kauri da 0.1mm yawanci ana amfani da su.