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Typewriter Line Counter Having a Digital Display Disclosure Number: IPCOM000039384D
Original Publication Date: 1987-Jun-01
Included in the Prior Art Database: 2005-Feb-01

Publishing Venue


Related People

Bowles, DJ Higdon, JM Lederer, JF [+details]


A typewriter display includes an annunciator to indicate the line on the sheet of paper on which typing is occurring. The annunciator is displayed in reverse video (colors of background and characters reversed) when the text line is within the bottom inch of the paper. The location of a text line on a sheet of paper is digitally indicated in an annunciator of a typewriter display. When typing in ten pitch or twelve pitch, there are six lines of text per vertical inch while fifteen pitch has eight lines of text per vertical inch; the line counter automatically adjusts its count for this. Thus, for an eleven-inch sheet of paper, the line counter has a maximum count of sixty-six in ten or twelve pitch and eighty-eight in fifteen pitch.