12
Chapter 1 Character Attributes
Width vs. CPI
Each font (except OCR fonts) supports printing at 5, 6, 6.67, 7.5, 8.33, 8.57,
10, 12, 13.33, 15, 16.67, 17.14, and 20 characters per inch (CPI). When using
pitches below 10 CPI, the character is expanded horizontally to double its
normal size; i.e., each character column is duplicated. This eliminates the
need for additional font matrices to support the smaller CPIs.
Character Attributes
The following character attributes are available in all fonts, and may be mixed
in any combination: bold, italic, overline, underline, strikethrough, superscript,
subscript.
• Bold characters are made by duplicating each dot in the character, with a
1/288" offset down and 1/240" offset across.
• Italic characters are made by shifting succeeding rows of character dots
to the left, to produce the desired character slant.
• Overline, underline, and strikethrough are made by overlaying an
appropriately spaced horizontal line in the character's ascender,
descender, or center row, respectively. There is an option to enable/
disable underlining of spaces.
• Superscript and subscript are made by vertically compressing the
character, altering the normal row spacing. Superscript characters are
shifted into ascender rows and subscript characters are shifted into
descender rows.
Additional Notes
• Plot data is aligned with the top uppercase row (not the top ascender row)
and leftmost character cell column.
• In the OCR-B font, the numerals 0 through 9 are two rows taller than
upper case characters, so they use two ascender rows.
• The printer accepts DP and NLQ downloaded fonts in Tally ANSI, Epson,
and Proprinter download formats. Download fonts print in enhanced
mode. When printed at 12 CPI, diagonals are slightly crooked. Tally ANSI
extended font characters drop the last column.