PRINTING APPARATUS, METHOD OF CONTROLLING IT, AND DATA STORAGE MEDIUM STORING COMPUTER PROGRAM REALIZING THE METHOD

摘要

PURPOSE: A Printer is provided to control by preventing a user from pulling printed roll paper before it is cut off the roll while still providing the printed paper quickly to the user. CONSTITUTION: A paper path is formed between that part of the printer that houses the paper roll and a paper exit(11). A print head(12) and a feed roller(14), a cutting mechanism(13), and ejection rollers(15,16) are disposed along this paper path. Note that feed roller(14) and ejection rollers are together referred to as transport rollers. Ejection rollers(15) and ejection rollers each comprise a pair of rollers, namely a drive roller and a pinch roller resiliently pressed against each other with a certain roller pressure. A thermal line type of print head is used as the print head(12) and the feed roller(14) also acts as a platen for supporting the paper while it is being printed by the print head(12). Cutting mechanism(13) is disposed near the print head on the downstream side thereof in the direction of paper transport and is used for cutting off the printed part from the unprinted rest of the roll paper R to form a slip of receipt. Feed roller(14) transports paper R printed by print head toward paper exit. Ejection rollers(15) and(16) are controlled to either hold the paper R advanced thereto by feed roller(14) so that the leading end of the paper is not ejected from the paper exit, or to continue advancing the paper R to and through the paper exit.