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Yellow dots on white paper, produced by color laser printer (enlarged, dot diameter about 0.1 mm) Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the specific device that was ...
Direct part marking (DPM) is a process to permanently mark parts with product information including serial numbers, part numbers, date codes, and barcodes. This is done to allow the tracking of parts through the full life cycle. The interpretation of 'permanent' often depends on the context the part is used.
Permanent markers are used for writing on metals, plastics, ceramics, wood, stone, cardboard etc. However, the mark made by them is semi-permanent on some surfaces. Most permanent marker ink can be erased from some plastic surfaces (like polypropylene and teflon) with little rubbing pressure. They can be used on ordinary paper, but the ink ...
The process of assigning HS codes is known as "HS Classification". All products can be classified in the HS by using the General Rules for the Interpretation of the Harmonized System ("GRI") that must be applied in strict order. HS codes can be determined by a variety of factors including a product's composition, its form and its function.
A hologram may be embedded either via hot-stamping foil, wherein an extremely thin layer of only a few micrometers of depth is bonded into the paper or a plastic substrate by means of a hot-melt adhesive (called a size coat) and heat from a metal die, or it may be directly embossed as holographic paper, or onto the laminate of a card itself ...
An 8¢ air mail stamp issued in 1963 was the first stamp printed for trials with new cancelling machines. [8] The 5¢ City Delivery issue of 1963 was the first commemorative issue produced with tagging. [9] Precancelled stamps and service-inscribed stamps are not usually tagged because they need not be routed through the cancelling equipment.
Postage stamp, used to indicate prepayment of fees for public mail; Ration stamp, indicating the right to rationed goods; Revenue stamp, used on documents to indicate payment of tax; Rubber stamp, device used to apply inked markings to objects Passport stamp, a rubber stamp inked impression received in one's passport upon entering or exiting a ...
Along with foil stamping machines, among the commonly used tools in hot stamping are dies and foil. [4] Dies may be made of metal or silicone rubber, and they may be shaped directly or cast. They can carry high levels of detail to be transferred to the surface and may be shaped to accommodate irregularities in the surface.