Magnetic recording and reproduction apparatus

摘要

A magnetic recording and reproduction apparatus for recording and reproducing a signal to and from a magnetic tape includes a substrate having first and second positioning engagement holes; a rotation head cylinder provided on the substrate and having the magnetic tape wound therearound over a prescribed angle and having first and second female screws; a first attaching screw having a first cylindrical section for insertion into the first positioning engagement hole and engagement with the first female screw; and a second attaching screw having a second cylindrical section for insertion into the second positioning engagement hole and engagement with the second female screw. Diameters A1 and A2 of the first and second cylindrical sections and diameters B1 and B2 of the first and second positioning engagement holes fulfill the following relationships:and