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|Every company needs to make use of the ricoh printers.
Sat, 30 Jul 2011 13:28:13 -0500
In the world that we are living in today, there is a very high demand for information to be printed out fast and furiously, but on top of that, many people will not cease to ever lust for quality, even though if this will mean that the end product will get to be delivered in a larger timeframe. Most of the times, you know what they say, that if you want something of good quality, you will need to make sure that you will research a lot about it and then lay out the cash.If you take a look at the type of printers that are mostly used nowadays, you will easily realize the fact that there are just too many dot matrix printers that are not only very slow, but they also don't have great printing quality, too and make too much noise. If you have not heard about the ricoh printers yet, you should know that they are the end product of a prestigious company that has set itself the goal to only manufacture printers that offer quality in a very short timeframe.If you are curious about such printers, then you should also know the fact that they can be purchased in the monochrome version and also the color version. On top of the fact that printing quality is jaw dropping, you will also not be disappointed by the drivers, which most printers have problems with and cause crashes. With the ricoh drivers, this is something that will never happen again, as they are rock solidly designed.The ricoh printer is a laser one and it can easily print on any material without its speed being chopped off. Being environmentally friendly, adds more to the positives.Ricoh only offers high quality printing solutions and that is what you should expect from these devices. If Ricoh is your choice, you will also not get to have printers that occupy a lot of space.Before you will buy one such printer, make sure to look online for good offers, as there are always special offers that you will get benefit from. Good luck and may your printing business flourish.
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|CUPS - Common Unix Printing System
Wed, 03 Nov 2010 01:48:10 -0500
CUPS, the Common Unix Printing System, allows a computer to act as a print server. A computer running CUPS is a host that can accept print jobs from client computers, process them, and send them to the appropriate printer.
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. It also provides the traditional command line interfaces for the System V and Berkeley print systems, and provides support for the Berkeley print system's Line Printer Daemon protocol and limited support for the server message block (SMB) protocol. System administrators can configure the device drivers which CUPS supplies by editing text files in Adobe's PostScript Printer Description (PPD) format. There are a number of user interfaces for different platforms that can configure CUPS, and it has a built-in web-based interface. CUPS is free software, provided under the GNU General Public License and GNU Lesser General Public License, Version 2.
CUPS provides a mechanism that allows print jobs to be sent to printers in a standard fashion. The print-data goes to a scheduler which sends jobs to a filter system that converts the print job into a format the printer will understand. The filter system then passes the data on to a backend—a special filter that sends print data to a device or network connection. The system makes extensive use of PostScript and rasterization of data to convert the data into a format suitable for the destination printer.
CUPS offers a standard and modularised printing system that can process numerous data formats on the print server. Before CUPS, it was difficult to find a standard printer management system that would accommodate the very wide variety of printers on the market using their own printer languages and formats. For instance, the System V and Berkeley printing systems were largely incompatible with each other, and they required complicated scripts and workarounds to convert the program's data format to a printable format. They often could not detect the file format that was being sent to the printer and thus could not automatically and correctly convert the data stream. Additionally, data conversion was performed on individual workstations rather than a central server.
CUPS allows printer manufacturers and printer-driver developers to more easily create drivers that work natively on the print server. Processing occurs on the server, allowing for easier network-based printing than with other Unix printing systems. With Samba installed, users can address printers on remote Windows computers and generic PostScript drivers can be used for printing across the network.
The CUPS scheduler implements Internet Printing Protocol (IPP) over HTTP/1.1. A helper application (cups-lpd) converts Line Printer Daemon protocol (LPD) requests to IPP. The scheduler also provides a web-based interface for managing print jobs, the configuration of the server, and for documentation about CUPS itself.
An authorization module controls which IPP and HTTP messages can pass through the system. Once the IPP/HTTP packets are authorised they are sent to the client module, which listens for and processes incoming connections. The client module is also responsible for executing external CGI programs as needed to support web-based printers, classes, and job status monitoring and administration. Once this module has processed its requests, it sends them to the IPP module which performs Uniform Resource Identifier (URI) validation to prevent a client from sidestepping any access controls or authentication on the HTTP server. The URI is a text string that indicates a name or address that can be used to refer to an abstract or physical resource on a network.
The scheduler allows for classes of printers. Applications can send requests to groups of printers in a class, allowing the scheduler to direct the job to the first available printer in that class. A jobs module manages print jobs, sending them to the filter and backend processes for final conversion and printing, and monitoring the status messages from those processes.
The CUPS scheduler utilizes a configuration module, which parses configuration files, initializes CUPS data structures, and starts and stops the CUPS program. The configuration module will stop CUPS services during configuration file processing and then restart the service when processing is complete.
A logging module handles the logging of scheduler events for access, error, and page log files. The main module handles timeouts and dispatch of I/O requests for client connections, watching for signals, handling child process errors and exits, and reloading the server configuration files as needed.
Other modules used by the scheduler include:
the MIME module, which handles a Multipurpose Internet Mail Extensions (MIME) type and conversion database used in the filtering process that converts print data to a format suitable for a print device;
a PPD module that handles a list of Postscript Printer Description (PPD) files;
a devices module that manages a list of devices that are available in the system;
a printers module that handles printers and PPDs within CUPS.
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