7265 Programmer’s Manual 63Copyright © 2004 TallyGenicom Chapter 4 ANSI OversizedChapter 4. ANSI Oversized FontThis chapter describes the characteristics and lists the ANSI control sequences for the rotatableoversized font, a unique sans-serif font with character shapes designed to accommodate verylarge expansions. This is an industrial-strength feature. Horizontal resolution is held to 120 dpi toenable oversized printing at carriage speeds of up to 50 inches per second. Combined withvertical logic seeking, this enables the 7265 to print complex mixes of character sizes androtations at creditable throughputs.The oversized font is monospaced only. ANSI print modes: bold, underscored, doublewide, andproportional have no effect. You can print characters 20 hex through 7F hex; characters abovethis range are ignored. User-defined character substitutions do not work in oversized, so youcannot use the IBM line-draw characters. The resident international character substitutions workthe same as in normal text.In contrast to the oversized function on earlier products, the 7265 interprets escape sequencesand control codes within an oversized string. As of this writing, however, we recommend that youexit oversized before sending any other control functions.To maintain compatibility with existing printers, the 7265 printer does not back paper up to printoversized characters on the current baseline. If you enter an oversized mode and immediatelyprint one character, then the top of the character is at the vertical position that was current whenyou entered oversized. This is no problem if all characters on a line are the same size. To mixoversized with either normal type or with different expansions on the same baseline, however,you will need to write a routine to find the baseline. We cover this later in this chapter.Some of the oversized control sequences are redundant. The nonrotatable controls that let youoptionally toggle oversized with SHIFT OUT and SHIFT IN are retained for compatibility with olderprinters. You could reasonably choose to use only the escape sequences for rotatable oversized(ESC [(Ps)| ) for new applications.
