PETREL – ENCRE DE SÉCURITÉ - FOURNISSEUR DE VOS ENCRES DE SÉCURITÉ - SECURITY INKS

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INVISIBLE AND FLUORESCENT INKS
Our company specializes in the production of invisible and fluorescent inks. These inks are used regularly in all types of security documents. Fluorescence, invisible under normal or artificial light, only becomes detectable when the document is exposed to an Ultra-Violet light source (black light or Wood’s lamp) and does not produce, as is the case for phosphorescence, afterglow (persistence of fluorescence after switching off the UV source) The choice of fluorescence colors is virtually unlimited, but black fluorescence does not exist. These inks can be printed by any type of printing but on supports without optical brighteners, the effect will be significantly better.
encres-invisibles-sous-uv invisible-inks-under-daylight CHROMOTROPIC INKS A chromotropic ink shows one color under normal light and another color under UV (for example a PMS 168 brown that fluoresces in green). BI-FLUORESCENT INKS Our bi-fluorescent inks are invisible to the naked eye and show two different colors, depending on the wavelength of the lamp (the most common wavelengths are 365nm and 254nm). For example, an ink will be invisible, and fluorescent in Green under 365 nanometers and in Red under 254 nanometers.

ENCRES ANTI-COPIE
Nous avons développé une gamme d’encres bien particulières qui ne peut pas être reproduite ni par un photocopieur ni par un scanner. Ces encres sont appelées anti-copie: la couleur proposée est un orange fluorescent qui apparaitra sur la photocopie ou le scan en brun ou en jaune. Nous avons aussi un rose fluorescent qui montre aussi une altération de la couleur originale si le document est reproduit. Dans tous les cas, si un doute subsiste, il suffit d’utiliser une lampe UV pour montrer que la photocopie n’est pas du tout fluorescente.

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ENCRES VISIBLES & FLUORESCENTES
Ces encres sont, par exemple, visible à la lumière du jour en bleu et fluorescentes en bleu, ou vert fluo vert, jaune fluo jaune, rouge fluo rouge. Un document imprimé avec ces encres montrera une forte fluorescence sous lampe UV alors que la copie n’en aura pas.

Created in 1985, PETREL is the French leader in the supply of security products for securing documents. Located in France, near Paris, PETREL manufactures and develops 3 main product lines: Security inks, security fibers and security sewing threads.

Contact details

Petrel Security

21 rue des Cerisiers
91090 Lisses, FRANCE

Petrel
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