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  2. 3D printing speed - Wikipedia

    en.wikipedia.org/wiki/3D_Printing_speed

    3D printing speed refers to only the build stage, a subcomponent of the entire 3D printing process. However, the entire process spans from pre-processing to post-processing stages. [ 7 ] The time required for printing a completed part from a data file (. stl or .obj ) is calculated as the sum of time for the following stages:

  3. PPM - Wikipedia

    en.wikipedia.org/wiki/PPM

    Pages per minute, a measurement of printing speed; Perl package manager, for software packages; ... Parts-per-million, ppm Carbon dioxide in Earth's atmosphere, CO 2 ppm;

  4. Useful conversions and formulas for air dispersion modeling

    en.wikipedia.org/wiki/Useful_conversions_and...

    1 percent by volume = 10,000 ppmv (i.e., parts per million by volume). Care must be taken with the concentrations expressed as ppbv to differentiate between the British billion which is 10 12 and the USA billion which is 10 9.

  5. HP LaserJet 4 - Wikipedia

    en.wikipedia.org/wiki/HP_LaserJet_4

    The LaserJet 4 Plus (4+), released in 1994, was the LaserJet 4 with the improved Canon EX+ engine which increased printing speed to 12 PPM. [3] This also provided the option for duplex printing (automatic double-sided printing) with the purchase of an accessory (HP part number C3157A).

  6. Parts-per notation - Wikipedia

    en.wikipedia.org/wiki/Parts-per_notation

    At 10 000 ppm the solution is a deep red colour. As the concentration decreases the colour becomes orange, then a vibrant yellow, with the final 1 ppm sample a very pale yellow. In science and engineering , the parts-per notation is a set of pseudo-units to describe small values of miscellaneous dimensionless quantities , e.g. mole fraction or ...

  7. Speeds and feeds - Wikipedia

    en.wikipedia.org/wiki/Speeds_and_feeds

    Cutting speed may be defined as the rate at the workpiece surface, irrespective of the machining operation used. A cutting speed for mild steel of 100 ft/min is the same whether it is the speed of the cutter passing over the workpiece, such as in a turning operation, or the speed of the cutter moving past a workpiece, such as in a milling operation.

  8. Printing speed - Wikipedia

    en.wikipedia.org/?title=Printing_speed&redirect=no

    This page was last edited on 21 July 2015, at 22:02 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...

  9. Printer (computing) - Wikipedia

    en.wikipedia.org/wiki/Printer_(computing)

    Networked or shared printers are "designed for high-volume, high-speed printing". They are usually shared by many users on a network and can print at speeds of 45 to around 100 ppm. The Xerox 9700 could achieve 120 ppm. An ID Card printer is used for printing plastic ID cards. These can now be customised with important features such as ...