The mechanism moving the record sheet must be such as to ensure that the latter moves without play and can be freely inserted and removed.
Caithfidh an mheicníocht lena ngluaistear an leathán taifid bheith ina meicníocht lena n-áirítear go mbogann an leathán gan ligean agus gur féidir é a chur isteach agus a bhaint go réidh.