In an image recording apparatus, a record medium passage information generation unit detects a sheet passage state of a record medium after the continuous record media is cut. The computer system includes predefined processor circuits including anti-tamper logic. There are at least two support straps configured to releasably interlock with the vertical receiving channel and a plurality of straps secured to an outer surface of the body armor to form a support trough that transfers at least a portion of the weight of the body armor to the waist of the wearer. The interior diameter of the neck includes lower and upper grooves and a plurality of spiral radial grooves extending therebetween. A predetermined weight percent of the filler material may be combined with the base carrier material to obtain repeatable desired acoustic related characteristics.