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2. Quantum dot display - Wikipedia

   en.wikipedia.org/wiki/Quantum_dot_display

   A widespread practical application is using quantum dot enhancement film (QDEF) layer to improve the LED backlighting in LCD TVs.Light from a blue LED backlight is converted by QDs to relatively pure red and green, so that this combination of blue, green and red light incurs less blue-green crosstalk and light absorption in the color filters after the LCD screen, thereby increasing useful ...

3. Laser printing - Wikipedia

   en.wikipedia.org/wiki/Laser_printing

   The laser printer was invented at Xerox PARC in the 1970s. Laser printers were introduced for the office and then home markets in subsequent years by IBM, Canon, Xerox, Apple, Hewlett-Packard and many others. Over the decades, quality and speed have increased as prices have decreased, and the once cutting-edge printing devices are now ubiquitous.

4. Luminous efficacy - Wikipedia

   en.wikipedia.org/wiki/Luminous_efficacy

   Luminous efficacy can be normalized by the maximum possible luminous efficacy to a dimensionless quantity called luminous efficiency.The distinction between efficacy and efficiency is not always carefully maintained in published sources, so it is not uncommon to see "efficiencies" expressed in lumens per watt, or "efficacies" expressed as a percentage.

5. Walmart has a Canon all-in-one printer for $29, and I ... - AOL

   www.aol.com/lifestyle/walmart-canon-one-printer...

   That's insanely cheap for a printer as capable as this one. ... let alone an entire printer. $29 $40 at Walmart. ... walmart.com. SAMSUNG 65" Class Neo QLED 8K (4320P) LED Smart TV, $3,298 (was ...

6. List of Hewlett-Packard products - Wikipedia

   en.wikipedia.org/wiki/List_of_Hewlett-Packard...

   HP categories of printers as of November 2014 are: Black and white laser printers; Color laser printers; Laser multifunction printers; Inkjet all-in-one printers; Specialty Photo inkjet printers; Business ink printers; Color inkjet printers; HP Designjet large format printers; HP Indigo Digital Presses; HP Inkjet Digital Web Press; HP latex ...

7. Laser - Wikipedia

   en.wikipedia.org/wiki/Laser

   Low to medium power laser diodes are used in laser pointers, laser printers and CD/DVD players. Laser diodes are also frequently used to optically pump other lasers with high efficiency. The highest-power industrial laser diodes, with power of up to 20 kW, are used in industry for cutting and welding. [75]

8. LED printer - Wikipedia

   en.wikipedia.org/wiki/LED_printer

   Kodak LED printer Oki LED printhead. An LED printer is a type of computer printer similar to a laser printer. Such a printer uses a light-emitting diode (LED) array as a light source in the printhead instead of the laser used in laser printers and, more generally, in the xerography process. The LED bar pulse-flashes across the entire page width ...

9. The Eureka vacuum that Walmart shoppers say is ‘like Dyson ...

   www.aol.com/lifestyle/eureka-vacuum-walmart...

   Samsung 65" Class 4K Crystal UHD LED Smart TV with HDR, $568 (was $648), walmart.com TCL 43" Class 4-Series 4K UHD HDR Roku Smart TV, $299 (was $430), walmart.com