Pre-Printing Considerations
(1) Small Text and Fine Lines
When preparing files for printing, small text and thin lines should be designed as single-color objects to avoid misregistration during multi-color printing.
- The minimum line width should be no less than 0.1 mm, otherwise the lines may disappear or look blurry after printing.
- For text, the minimum recommended height is 1.8 mm for Chinese characters and 1.5 mm for English letters to ensure readability and avoid broken strokes.
(2) Reversed-Out (Knockout) Text
Extra care is required when designing reversed-out text (white text on a colored background).
- If the text is small, especially with thin strokes, it should be kept in a single color to prevent blurry edges.
- Choose fonts that have balanced and solid strokes, such as Rounded Sans Serif, Heiti, or Gothic-style fonts.
- Avoid using fonts with large stroke contrast like Songti or Old Songti, as their thin horizontal strokes may disappear when reversed out.
- If you must use such fonts, make sure the minimum text height is 2.5 mm for Chinese characters and 2 mm for English letters to maintain legibility.
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