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A request begins with a byte containing the request code, followed by the arguments to the request, and is terminated by an ASCII LF character. An LPD printer is identified by the IP address of the server machine and the queue name on that machine. Many different queue names may exist in one LPD server, with each queue having unique settings.
Note that the printer itself is not necessary to be wireless. AirPrint is a feature in Apple Inc.'s macOS and iOS operating systems for printing via a wireless LAN (Wi-Fi), [5] [6] either directly to AirPrint-compatible printers, or to non-compatible shared printers by way of a computer running Microsoft Windows, Linux, [7] or macOS.
A system running this print architecture could traditionally be identified by the use of the user command lp as the primary interface to the print system, as opposed to the BSD lpr command (though some systems provide lpr as an alias to lp). Typical user commands available to the System V printing system are: lp: the user command to print a ...
Canon printers use intelligent printheads, which control the quality of the final output given metadata sent to the printer from the driver. A consequence of this design is that the print quality is not specified in resolution alone, but via a "resolution mode" quality setting (up to 5 quality settings available at a time).
Refined Printing Command Stream, also known as RPCS, is a vector-based [1] printing/duplicating control protocol, designed for communication between Microsoft Windows PC clients, and several lines of Ricoh copiers. Drivers provided by Ricoh install the chosen copier to behave as a printer device.
Printer Command Language, more commonly referred to as PCL, is a page description language (PDL) developed by Hewlett-Packard as a printer protocol and has become a de facto industry standard. Originally developed for early inkjet printers in 1984, PCL has been released in varying levels for thermal , matrix , and page printers.
Michael Sweet, who owned Easy Software Products, started developing CUPS in 1997 and the first public betas appeared in 1999. [4] [5] The original design of CUPS used the Line Printer Daemon protocol (LPD), but due to limitations in LPD and vendor incompatibilities, the Internet Printing Protocol (IPP) was chosen instead.
The command was introduced in MS-DOS/IBM PC DOS 2.0. [17] [18] DR DOS 6.0 includes an implementation of the PRINT command. [19] In early versions of DOS, printing was accomplished using the copy command: the file to be printed was "copied" to the file representing the print device. [20] Control returned to the user when the print job completed ...