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2. Composition roller - Wikipedia

   en.wikipedia.org/wiki/Composition_roller

   A composition roller is a tool used in letterpress printing to apply ink to a bed of type in a printing press. It consists of a cylinder made of a substance known as "roller composition" or simply "composition", a mixture of hide glue and sugar (in the form of molasses or treacle ), with various additives such as glycerin depending on the ...

3. Dot matrix printing - Wikipedia

   en.wikipedia.org/wiki/Dot_matrix_printing

   The smooth cylindrical roller of a conventional printer was replaced by a spinning, fluted cylinder. The print head was a simple hammer, with a vertical projecting edge, operated by an electromagnet. Where the vertical edge of the hammer intersected the horizontal flute of the cylinder, compressing the paper and ribbon between them, a single ...

4. List of Hewlett-Packard products - Wikipedia

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

   13 HP Black wired keyboards. 14 Business notebooks. Toggle Business notebooks subsection. 14.1 HP OmniBook. ... HP Instant Ink series; HP Link Reader; HP Live Photo;

5. Ink cartridge - Wikipedia

   en.wikipedia.org/wiki/Ink_cartridge

   Two cartridges; one with black ink (a third-party HP 15 compatible cartridge), one with colored inks (an original type HP 17 tri-color cartridge) currently installed in an HP inkjet printer. An ink cartridge or inkjet cartridge is a component of an inkjet printer that contains ink to be deposited onto paper during printing. [1] It consists of ...

6. Duplicating machines - Wikipedia

   en.wikipedia.org/wiki/Duplicating_machines

   The outside of the drum is covered in screens and the inside is coated in ink. The screens make sure the ink flow is regulated. The paper is fed to the drum, and the ink only comes through the master material where there are holes. A pressure roller presses the paper to the drum and transfers the ink to the paper to form the image.

7. Waterless printing - Wikipedia

   en.wikipedia.org/wiki/Waterless_printing

   Waterless vs. Conventional Printing Plates. Waterless printing is an offset lithographic printing process that eliminates the use of water or the dampening system used in conventional printing. [1] Unlike traditional printing presses, waterless offset presses do not use a dampening solution to clear the press of ink. [2]