Abstract: Apparatus is provided for receiving sheets of paper from a host printer and selectively transporting the sheets to a stacker tray or to a selective tray sheet sorting machine of the bin opening type. The apparatus has a sheet transport system for receiving sheets and gating the sheets to an infeed for the stacker tray or transporting the sheets to the infeed of the sheet sorting machine. The sheet transport system is in part incorporated in a cabinet door which completes the sheet transport when closed and when opened affords access to the infeeds for the stacker tray and the sorter. The sorter has nested trays to occupy a small vertical space and a tray opener which moves to locations between trays to pivot the trays open adjacent to the sheet infeed to provide a large space between trays for entry of the sheets. The sheet infeeds to the stacker tray and sorter trays can be opened when the door is open to provide access, and a blocking device prevents clsoure of the door if one of the infeeds is open.

Abstract: Disclosed is a printer having a plurality of heating elements disposed on a thermal head which generate heat to melt a transfer material coated on a printing tape and transfer it onto a recording medium. The printer comprises a printer body having a recording paper setting device, a thermal head and head feed mechanism, and a tape cassette mounted vertically along the front of the printer body, which contains the printing tape. The invention is characterized in that the tape cassette stretches the printing tape throughout the overall length of space provided for movement of the thermal head. While the printing tape is held stationary, the head is moved in a stepping manner at every printing and is then fed for one character without printing after reaching the end of the print line.