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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. Flexographic ink - Wikipedia

   en.wikipedia.org/wiki/Flexographic_ink

   The main types of flexographic ink are water based, [2] solvent and UV curable. [3] The printing surface (substrate type) dictates what ink type it is advisable to use.Each type of ink has its advantages and disadvantages, therefore the type of ink used in printing is determined by factors such as price, speed, and the use of the packaging (food, cleaning, or shopping bags).

4. Ink ball - Wikipedia

   en.wikipedia.org/wiki/Ink_ball

   An ink ball, inking ball, or dabber was a tool used in printmaking and letterpress printing to apply ink to the plate or type to be printed. Ink balls had been used since the dawn of the printing press in the 15th century. In printmaking, they were used individually, to make the ink smooth and applying it. [1]

5. Brayer - Wikipedia

   en.wikipedia.org/wiki/Brayer

   A brayer is a hand-tool used historically in printing and printmaking to break up and "rub out" (spread) ink, before it was "beaten" using inking balls or composition rollers. A brayer consists of a short wooden cylinder with a handle fitted to one end; the other, flat end is used to rub the ink. [1]

6. Offset ink - Wikipedia

   en.wikipedia.org/wiki/Offset_ink

   Such ink must be specially formulated to resist other chemicals it will come in contact with on the printing press. It is widely used for printing high-quality images and text on various substrates such as paper, cardboard, and certain plastics. [1] It is crucial that offset ink resist water-in-ink emulsification (i.e., repel rather than absorb ...

7. Trap (printing) - Wikipedia

   en.wikipedia.org/wiki/Trap_(printing)

   Thinner traps are less visible. Therefore, the trap width is set to a strict minimum, dictated by the maximum amount of misregistration of the entire workflow up to the press. When printing at 150 lpi, traps are usually between 1/150 and 1/300 inch (0.48 pt and 0.24 pt, 0.16 mm and 0.08 mm). These values are usually multiplied by 1.5 or 2 when ...