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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 ...
Color error: Stamp is printed in the wrong color(s). Paper error: Stamp is printed on the wrong type of paper which, e.g., may have a different watermark or color than intended. Perforation error: Perforations are missing on one or several sides or put in the wrong place (e.g. diagonally). As perforations may be removed by cutting them off ...
The resulting watermark is generally much clearer and more detailed than those made by the Dandy Roll process, and as such, Cylinder Mould Watermark Paper is the preferred type of watermarked paper for banknotes, passports, motor vehicle titles, and other documents where it is an important anti-counterfeiting measure.
True watermark. A true watermark is a recognizable image or pattern in paper that appears lighter or darker than surrounding paper when viewed with a light from behind the paper, due to paper density variations. A watermark is made by impressing a water coated metal stamp or dandy roll onto the paper during manufacturing.
It means that the printer is trying to print a document that needs "Letter size" (8½ × 11 in.) paper when no such paper is available. [3] Early LaserJet models used a two-character display for all status messages. This printer is showing "00", for normal status. Paper out in the upper cassette would be indicated by alternating "11" and "UC".
The first documented fire-starting printer was a Stromberg-Carlson 5000 xerographic printer (similar to a modern laser printer, but with a CRT as the light source instead of a laser), installed around 1959 at the Lawrence Livermore National Laboratory and modified with an extended fusing oven to achieve a print speed of one page per second. In ...
The original style of CAP code, developed in 1982 by Kodak along with the Motion Picture Association, is a series of very small dots printed in the picture area of a film print. The original instance of CAP developed by Kodak is a technology for watermarking film prints to trace copies of a print, whether legal or not.
GS1 identification keys [4] includes detailed information about 12 GS1 ID keys, their purpose, use, allocation and maintenance rules, etc. GS1 Application Identifiers [ 5 ] defines the prefixes (AIs) used in barcodes and EPC/RFID-tags to define the meaning and format of identifiers, and currently lists 516 kinds of identifiers.