For a fast typesetter at the time, the APS 5 from AutoLogic was hard to beat. It had a 64-speed paper advance and did not stop to set type. It figured what needed to be set in a band of data and matched the electronic advance to the mechanical advance. If there were parts of a character that were not included in the band of printing it would be printed in the next band or the band after that. The printing scan rate had to be held constant to prevent overexposing or underexposing the type. White space was not scanned but the beam would jump to the next black position. If it was working on a narrow column the paper speed was faster and if it was on a wide set of columns the paper speed was decreased With this technology characters larger than the CRT imaging area were printed. It would print about 4000 newspaper column lines per minute whether it was 1 column at 4000 lines or 4 columns at 1000 lines each.