HP 82240B Enhanced Infrared Printer for HP Calculators
If you need a printer for your Hewlett-Packard calculator but don't want to mess with cords,  this enhanced infrared printer offers an ingenious solution. Compatible with HP calculator models 48GX, 48G+, 19B2, 17B2, 38G, 39G, the printer is a sleek and compact companion, printing up to 80 characters per second (but frequently printing less) and utilizing modulated biphase encoding with error correction for accurate, precise printing.The printer features two font sets, both ECMA094 and HP Roman-8, and can accommodate up to 24 characters per line and a maximum of 166 columns of continuous graphics, enough to keep even advanced users happy. The thermal printer uses four AA batteries and features an automatic shutdown for extended battery life. Each set of four batteries can print up to one roll of paper.