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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 ...
The 6000 series band printers were introduced in 1978. By 1979 company revenues were over $100 million. In 1980, the Mini-Printer Model 770 was introduced—a small, low-cost desktop serial matrix printer. This was the first printer built completely in-house, and there were problems.
The DECserver 250 was a network server for printers for Ethernet Local Area Networks, consisting of a single box that provided the following: (2) Digital Parallel printer ports, each of which used a male 37-pin connector, (4) EIA RS-232-C/CCITT V.24 asynchronous line interfaces for connecting three serial printers and one serial printer or ...
Morkrum Model 11 Tape Printer – The Model 11 Typewheel Tape Printer, at about 45 words-per-minute, was a bit faster the Morkrum Printing Telegraph Blue and Green-Code printers, and was modeled after the European Baudot Telegraph System printer. The Model 11 was a Tape Printer which used gummed paper tape that could be pasted onto a telegram ...
IBM provides extensive documentation [14] Users guide for a large range of 4610 printers including programming information (Retrieved: 2018-01-06 16:31+00) for interfacing with the printer family programmatically. Generally, when connecting the printer via RS-232 or RS-485, the commands are sent in binary along with the text.
A HP LaserJet 4000n printer. The LaserJet 4000/4050 and their respective variants were the first printers released in the 4000 series. The LaserJet 4000 series printers print letter paper at 17 pages per minute, and can be set to print at 600 dpi or 1200 dpi, although when set to print at true 1200 dpi, the printer runs at reduced speed.
The first ImageWriter is a serial-based dot matrix printer introduced by Apple Computer in late 1983.. The printer was essentially a re-packaged 9-pin dot matrix printer from C. Itoh Electronics (model C. Itoh 8510, with a modified ROM and pinout), released the same year.
StyleWriter is a line of inkjet serial printers by Apple, targeted mainly towards consumers. They produced print quality that was better than the dot matrix ImageWriters, and were cheaper than the LaserWriters. All but a few models contained Canon print engines, while the last few were re-badged HP Deskjet printers.