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Liquid metal jet Stencil (mechanical cut, photo process, laser cut) Other methods like manual metal stamp, vibro-etch and embossing were not suitable to successfully apply micro size (1/32- to 15/64-inch square), high density machine-readable symbols.
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 ...
The 7d, 8d and 9d stamps had the value indicator behind the bust. [8] 8d Vermillion 8d Light turquoise blue 6 Jan 1969 [6] 9d Dark green 8 Aug 1967 [3] 10d Drab 1 Jul 1968 [7] The background of the 10d and 1/- stamps had a gradient. 1/- Pale violet 5 Jun 1967 [4] 1/6 Blue and deep blue 8 Aug 1967 [3] 1/9 Orange and black 5 Jun 1967 [4] 2/6 Peat ...
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 ...
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.
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 ...
The inside of a variable value stamp vending machine showing the stamps before the value is printed A selection of variable value stamps showing the range of values that may be selected A variable value stamp is a gummed or self-adhesive postage stamp of a common design, issued by a machine similar to an automatic teller machine (ATM), with a ...
The device had a steel die, generally circular, which printed the location of the cancel, together with the time and date of cancel. This die was held in place by a handle with an obliteration marker, often oval shaped, off to the right side that was applied over the postage stamp to prevent its reuse. [2] The ink came from an ink pad.