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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 ...
HP-150 II (aka HP 45849A) [6] replaced HP-150 in 1984. While still called HP Touchscreen II , the touchscreen was no longer standard, but rather a rarely adopted option. The optional touchscreen bezel was superior to the original bezel, in that the emitters and detectors were now located behind a solid infrared-transparent plastic; thus ...
February 11, 1965 – IBM introduces the 1130 (Models 1A, 1B, 2A, and 2B). Also announced is the IBM 1132 printer, the lowest cost online computer printer ever announced by IBM at that time. Fourth quarter 1965 – First customer shipments begin from the San Jose plant. March 31, 1966 – IBM introduces the IBM 1500 educational system.