Microprinting
A printed image (usually repeated words, numbers of texts) 0,15–0,3 mm high. It is visible only with magnifying devices; can be perceived with the naked eye as a thin continuous line.
Classification
- Positive microprinting consists of dark letters on a light background (fig. 1, a);
- Negative microprinting consists of light letters on a dark background(fig. 1, b);
- Reversed (turned out) microprinting changes gradually from negative to positive and vise versa. (fig. 1, c).
a
b
c
Fig. 1. Microprinting:
a – positive. 10 000 Belarusian Rubles (2000); b – negative. 10 000 Belarusian Rubles (2000);
c – reversed. 1 000 Russian Rubles (1997). Modification 2010