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CUPS consists of a print spooler and scheduler, a filter system that converts the print data to a format that the printer will understand, and a backend system that sends this data to the print device. CUPS uses the Internet Printing Protocol (IPP) as the basis for managing print jobs and queues.
cancel previously submitted jobs IPP uses TCP with port 631 as its well-known port . Products using the Internet Printing Protocol include Universal Print from Microsoft, [ 23 ] CUPS (which is part of Apple macOS and many BSD and Linux distributions and is the reference implementation for most versions of IPP [ 24 ] ), Novell iPrint , and ...
Note that the LPD queue name is case sensitive. Some modern implementations of LPD on network printers might ignore the case or queue name altogether and send all jobs to the same printer. Others have the option to automatically create a new queue when a print job with a new queue name is received. This helps to simplify the setup of the LPD ...
In computer networking, a print server, or printer server, is a type of server that connects printers to client computers over a network. [1] It accepts print jobs from the computers and sends the jobs to the appropriate printers, queuing the jobs locally to accommodate the fact that work may arrive more quickly than the printer can actually handle.
Nowadays, the most common use of spooling is printing: documents formatted for printing are stored in a queue at the speed of the computer, then retrieved and printed at the speed of the printer. Multiple processes can write documents to the spool without waiting, and can then perform other tasks, while the "spooler" process operates the printer.
Jobs are typically identified by a unique number, and are assigned to a particular destination, usually a printer. Jobs can also have options associated with them such as media size, number of copies and priority. A Print Job is a single queueable print system object that represents a document that needs to be rendered and transferred to a printer.
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IT management: instead of having to manage hundreds of print queues on print servers and multiple printers on the user desktops there is only one print queue on each user PC. Costs and environment: Reduces uncollected paper. Green IT: the server-less flavour of pull printing allows the removal of all print servers throughout the company.