A stack of histology cassettes configured to be inserted into a hopper of a printer, wherein each histology cassette in the stack includes a bottom face, a top face opposite the bottom face, a front face, a rear face opposite the front face, a first lateral face and a second lateral face opposite the first lateral face. The top face of the histology cassette is open to allow a sample to be received within the histology cassette. The histology cassettes have substantially the same orientation within the stack. The histology cassettes in the stack are arranged with a first histology cassette at the bottom of a stack, and each subsequent histology cassette in the stack up to a last histology cassette in the stack is arranged with its bottom face positioned on the top face of a preceding histology cassette in the stack. The histology cassettes in the stack are held together by a length of tape which loops around the entire stack of histology cassettes. The length of tape includes a first fixing region and a second fixing region. The first fixing region overlaps and adheres to the second fixing region. The length of tape also includes a release region at an end of the length of tape. The release region is configured to be pulled by a user after the stack of histology cassettes has been inserted into a hopper of a printer so as to release the first fixing region from the second fixing region thereby releasing the histology cassettes within the hopper of the printer.