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  2. Laser printing - Wikipedia

    en.wikipedia.org/wiki/Laser_printing

    Laser printing is an electrostatic digital printing process. It produces high-quality text and graphics (and moderate-quality photographs) by repeatedly passing a laser beam back and forth over a negatively charged cylinder called a "drum" to define a differentially charged image. [ 1 ]

  3. Bubblegram - Wikipedia

    en.wikipedia.org/wiki/Bubblegram

    A laser glass sculpture of a caffeine molecule. A bubblegram (also known as laser crystal, Subsurface Laser Engraving, 3D crystal engraving or vitrography) is a solid block of glass or transparent plastic that has been exposed to laser beams to generate three-dimensional designs inside.

  4. Walgreens - Wikipedia

    en.wikipedia.org/wiki/Walgreens

    Walgreen Company, doing business as Walgreens, is an American company that operates the second-largest pharmacy store chain in the United States, behind CVS Health. [3] It specializes in filling prescriptions, health and wellness products, health information, and photo services. [4]

  5. Stereolithography - Wikipedia

    en.wikipedia.org/wiki/Stereolithography

    Stereolithography (SLA or SL; also known as vat photopolymerisation, [1] optical fabrication, photo-solidification, or resin printing) is a form of 3D printing technology used for creating models, prototypes, patterns, and production parts in a layer by layer fashion using photochemical processes by which light causes chemical monomers and ...

  6. Charles Rudolph Walgreen - Wikipedia

    en.wikipedia.org/wiki/Charles_Rudolph_Walgreen

    Walgreens offered low-priced lunch counters, built its own ice cream factory, and introduced the malted milk shake in 1922. By 1927, Walgreen had established 110 stores. His son Charles Rudolph Walgreen Jr. (March 4, 1906 – February 10, 2007) and grandson Charles R. Walgreen III both shared his name and played prominent roles in the company ...

  7. Photogravure - Wikipedia

    en.wikipedia.org/wiki/Photogravure

    Photogravure is distinguished from rotogravure in that photogravure uses a flat copper plate etched rather deeply and printed by hand, while in rotogravure, as the name implies, a rotary cylinder is only lightly etched, and it is a factory printing process for newspapers, magazines, and packaging.

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