Hairline rules used on desktop systems produce the smallest rule line possible on the output device.
These elements include: errors in typeface selection, type size, leading of lines, use of rule lines, contrast between regular weight and bold or darker type, and contrast between type and its background.
TABLE 1 Responses to Whether Suggested Type Specifications in Figures 1 and 2 Provide the Most Readability for Average Consumer (by percentage) N = 15 Type Specifications Yes No Type Faces 80 20 Type Sizes 60 40 Leading of Lines 87 13 Use of Rule Lines 87 13 Contrast Between Regular Weight Type 87 13 and Bold (or Darker) Type Nutrition Facts Label Boxed With All Black 67 33 or One Color Type Printed on a White or Neutral Background
When asked "Do you think the suggested use of rule lines provides the most readability for the average consumer?
The majority of the graphic arts education experts who participated in this study agreed that the FDA's suggested type specifications would provide the most readability for the average consumer in the areas of typeface, type size, leading of lines, use of rule lines, and contrast between regular weight type and bold or darker type.