We protect your rights with a two-step method: (1) we copyright the library, and (2) we offer you this license, which gives you legal permission to copy, distribute and/or modify the library.

To protect each distributor, we want to make it very clear that there is no warranty for the free library. Also, if the library is modified by someone else and passed on, the recipients should know that what they have is not the original version, so that the original author’s reputation will not be affected by problems that might be introduced by others.

Finally, software patents pose a constant threat to the existence of any free program. We wish to make sure that a company cannot effectively restrict the users of a free program by obtaining a restrictive license from a patent holder.

Therefore, we insist that any patent license obtained for a version of the library must be consistent with the full freedom of use specified in this license.

Most GNU software, including some libraries, is covered by the ordinary GNU General Public License. This license, the GNU Lesser General Public License, applies to certain designated libraries, and is quite different from the ordinary General Public License. We use this license for certain libraries in order to permit linking those libraries into non-free programs.

When a program is linked with a library, whether statically or using a shared library, the combination of the two is legally speaking a combined work, a derivative of the original library. The ordinary General Public License therefore permits such linking only if the entire combination fits its criteria of freedom. The Lesser General Public License permits more lax criteria for linking other code with the library.

We call this license the “Lesser” General Public License because it does Less to protect the user’s freedom than the ordinary General Public License. It also provides other free software developers Less of an advantage over competing non-free programs. These disadvantages are the reason we use the ordinary General Public License for many libraries. However, the Lesser license provides advantages in certain special circumstances.

For example, on rare occasions, there may be a special need to encourage the widest possible use of a certain library, so that it becomes a de-facto standard. To achieve this, non-free programs must be allowed to use the library. A more frequent case is that a free library does the same job as widely used non-free libraries. In this case, there is little to gain by limiting the free library to free software only, so we use the Lesser General Public License.

In other cases, permission to use a particular library in non-free programs enables a greater number of people to use a large body of free software. For example, permission to use the GNU C Library in non-free programs enables many more people to use the whole GNU operating system, as well as its variant, the GNU/Linux operating system.

Although the Lesser General Public License is Less protective of the users’ freedom, it does ensure that the user of a program that is linked with the Library has the freedom and the wherewithal to run that program using a modified version of the Library.

The precise terms and conditions for copying, distribution and modification follow. Pay close attention to the difference between a “work based on the library” and a “work that uses the library”. The former contains code derived from the library, whereas the latter must be combined with the library in order to run.

System Administrator Guide

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Xerox 4510, 1235/DX, 1235DT manual System Administrator Guide
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1235DT, 1235/DX, 4510 specifications

The Xerox 4510 and 4250 are robust monochrome laser printers designed to cater to the needs of modern office environments. Known for their reliability and impressive output quality, these models excel in providing high-performance solutions for businesses seeking efficiency and productivity.

The Xerox 4510 is renowned for its ability to deliver exceptional print speeds of up to 65 pages per minute (ppm). This allows organizations to meet high-volume printing demands without compromising on quality. Its maximum monthly duty cycle of up to 300,000 pages makes it suitable for busy workplaces, reducing the need for frequent maintenance and ensuring uninterrupted operations. In contrast, the Xerox 4250 offers a slightly lower printing speed of 50 ppm, making it an ideal option for small to medium-sized businesses that require consistent performance without excessive output.

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In terms of technology, both printers utilize Xerox's state-of-the-art imaging technology, which contributes to their high-quality output and reliability. The inclusion of automatic duplex printing is another standout feature, allowing users to print on both sides of the paper, thus reducing paper consumption and environmental impact.

Connectivity is another strong point for the Xerox 4510 and 4250. They are equipped with various connectivity options, including USB, Ethernet, and wireless capabilities. This ensures easy integration into existing office networks, allowing multiple users to access the printer simultaneously.

In summary, the Xerox 4510 and 4250 printers embody exceptional performance, quality, and versatility, making them valuable assets for any office environment. Their advanced technologies, high-speed capabilities, and user-friendly features position them as trusted solutions for businesses aiming to enhance their printing efficiency while maintaining high standards of output.
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