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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 RPL character set is an 8-bit character set and encoding used by most RPL calculators manufactured by Hewlett-Packard as well as by the HP 82240B thermal printer. [1] [2] It is sometimes referred to simply as "ECMA-94" in documentation, [1] [3] although it is for the most part a superset of ISO/IEC 8859-1 / ECMA-94 in terms of printable characters, and it differs from ISO/IEC 8859-1 by ...
Stencil-based machines Mimeograph (also Roneo, Gestetner) Digital Duplicators (also called CopyPrinters, e.g., Riso and Gestetner) Typewriter-based copying methods Carbon paper; Blueprint typewriter ribbon; Carbonless copy paper; Photographic processes: Reflex copying process (also reflectography, reflexion copying)
Hewlett-Packard uses a similar concept in its HP-UX operating system and its Printer Command Language [7] (PCL) protocol for printers (either for HP printers or not). The terminology, however, is different: What others call a character set , HP calls a symbol set , and what IBM or Microsoft call a code page , HP calls a symbol set code .
Premium Zink Rainbow Photo Paper (POLZ2X3xxRB) – 2×3" sheets; HP Sprocket Photo Paper – 2×3" (5×7.6 cm) sheets; HP Sprocket Plus Photo Paper – 2.3×3.4" (5.8×8.7 cm) sheets; Zink zRoll - available in a variety of widths † The 'x' in the model represents the number of sheets of paper in the pack.
HP's stated that the firmware was intended to provide "the best consumer experience" and "protect" customers from "counterfeit and third-party ink cartridges that do not contain an original HP security chip and that infringe on our IP." [50] In 2023, PC World reported that HP printers still prevent users from using third-party ink. [51]
The heat lamp makes indirect revealing. After cooling the film or paper, a stable black-and-white image is obtained. [2] Process: A special "heat sensitized" paper is fed into the copier in direct contact to the original. There is a strong lamp within the machine that heats both original and the "heat sensitized" copy paper. Due to its ...
Ozalid machine in use with the City of Seattle, City Light office, circa 1954. Ozalid is a registered trademark [1] of a type of paper used for "test prints" in the monochrome classic offset process. The word "Ozalid" is an anagram of "diazol", the name of the substance that the company "Ozalid" used in the fabrication of this type of paper.