Browse Prior Art Database

Line Spacing Between Successive Lines of Fonts Having Differing Heights

IP.com Disclosure Number: IPCOM000043688D
Original Publication Date: 1984-Sep-01
Included in the Prior Art Database: 2005-Feb-05
Document File: 2 page(s) / 28K

Publishing Venue

IBM

Related People

Delaplain, BJ: AUTHOR [+2]

Abstract

Interline spacing between fonts is usually a design parameter. When font sizes are changed in successive lines selecting either the large or small fonts, interline spacing often can result in unpleasing results. To avoid the unpleasing results, the interline spacing between successive lines having large and small fonts is adjusted in accordance with the maximum ascender-descender extremities. This selection prevents overstriking of the characters in the fonts as well as reducing the background space between the successive lines from the large fonts' interline spacing. The drawing illustrates an upper line having a large font with the dotted lines indicating maximum ascender and descender extremities. Normal baseline to baseline interline spacing is quite wide.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 75% of the total text.

Page 1 of 2

Line Spacing Between Successive Lines of Fonts Having Differing Heights

Interline spacing between fonts is usually a design parameter. When font sizes are changed in successive lines selecting either the large or small fonts, interline spacing often can result in unpleasing results. To avoid the unpleasing results, the interline spacing between successive lines having large and small fonts is adjusted in accordance with the maximum ascender-descender extremities. This selection prevents overstriking of the characters in the fonts as well as reducing the background space between the successive lines from the large fonts' interline spacing. The drawing illustrates an upper line having a large font with the dotted lines indicating maximum ascender and descender extremities. Normal baseline to baseline interline spacing is quite wide. It is desired to present text in the next succeeding line using a small font having the respective ascender and descender extremities. To control the white space between the large and small fonts, the baseline to baseline spacing is selected such that the maximum descender of the large fonts and the maximum ascender of the small fonts lie along a common line. Maximum ascender and descender refer to the height of a vertical line in a font that enables a computer to use the font to create a continuous vertical line; the ascenders and descenders typically are shorter than the maximum ascender- descender lengths. Alternatively, a small spac...