page_title: Security printing
section_title: Geometric lathe work
hierarchical_section_title: Security printing / Geometric lathe work
caption_attribution_description: English: A sample of Guilloches, made by the Delina Security Design suite.
context_page_description: Security printing is the field of the printing industry that deals with the printing of items such as banknotes, cheques, passports, tamper-evident labels, security tapes, product authentication, stock certificates, postage stamps and identity cards. The main goal of security printing is to prevent forgery, tampering, or counterfeiting. More recently many of the techniques used to protect these high-value documents have become more available to commercial printers, whether they are using the more traditional offset and flexographic presses or the newer digital platforms. Businesses are protecting their lesser-value documents such as transcripts, coupons and prescription pads by incorporating some of the features listed below to ensure that they cannot be forged or that alteration of the data cannot occur undetected.
  A number of technical methods are used in the security printing industry. Security printing is most often done on security paper, but it can also occur on plastic materials.
context_section_description: A guilloché is an ornamental pattern formed of two or more curved bands that interlace to repeat a circular design. They are made with a geometric lathe.
caption: A guilloché
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