The IBM SELECTRIC Composer: Statistical Evaluation of Printing Alignment

This paper describes the measurement and evaluation of print alignment for the SELECTRIC Composer, and discusses the suitability of statistical techniques for achieving both. This paper deals extensively with techniques and procedures for collecting data; however, it is not intended to define a generalized method for statistical evaluation. Printing alignment is shown to be described objectively and precisely by the distribution of measured misalignment; misalignment is precisely defined.