A brief description of several categories of fluorescent inks

Fluorescent ink, as the name suggests, is a collective name for fluorescent inks. Prints printed with this type of ink often exhibit fluorescent responses when irradiated with a violet light. Therefore, it can be used for security. There are many kinds: colorless fluorescent ink, colored fluorescent ink, dual-wave invisible fluorescent ink and so on. Colorless fluorescent ink, such as China's current issuance of stamps, printed on the stamp of the fluorescent screen printing ink, is the use of such fluorescent ink; colored fluorescent ink, mainly red, green, yellow, etc.; double wave invisible fluorescent ink, in Under different wavelengths of fluorescent light, different fluorescence color responses are present, long wavelengths exhibit a color fluorescence response, and short wavelengths exhibit another color fluorescence response.

Fluorescent security ink is a fluorescent ink that is specifically used for security. In fact, it is fluorescent ink. The use of fluorescent ink stamps for security purposes has not been disclosed in the past. It was not until the end of the 20th century that forgery stamps were flooded. It was disclosed that fluorescent inks were used for security purposes. Therefore, such fluorescent inks were called anti-fake fluorescent inks.

Fluorescent Encryption Anti-counterfeit ink, which is different from ordinary fluorescent ink, because the encryption components in the ink are unique and have double anti-counterfeiting performance. Therefore, when authenticating its authenticity, as long as a special instrument is used, the authenticity can be clearly discerned. Under the illumination of the violet light, different fluorescent colors can be presented. At present, China has developed five varieties that can be used for different combinations of encryption. For example, the 2000-2 “Spring Festival” sheetlet, printed with double-encryption security ink, is blue and yellow-green under violet light illumination; the yellow ring on the 2000-17 “27th Olympic Games” sheetlet, Under the irradiation of a violet light, yellow fluorescence still appears.