Vocabulary and index

Algorithm A numerical formula that calculates how dots form a halftone image.

The streak is not uniform in the stripe gradient.

Bleed image or patch that extends to the trimmed edge of the page.

The four primary colors in Cyan and Black four-color printing: cyan, magenta, yellow, and black.

The color range that can be expressed by the color gamut printing or screen display.

The color management system is used to ensure that different input devices and output devices have color-unified software so that the printed matter is consistent with the original.

Materials consumed in the printing of consumables: such as paper, ink, or toner.

Continually adjust images, pictures, and other images to express continuously changing colors. Halftone screening is required for printing. At present, most continuous tone images can be digitized by scanners and image processing software to become halftone images.

Variable data printing In digital printing, the images or text on each page can be continuously changed in one print, also known as personalized printing.

Digital printing A printing method in which a laser or light-emitting diode is used to etch or electronically image plates or photoreceptor drums, and digitalized graphic information is printed directly from a computer.

Distribute printing Electronic files are transmitted over the network to one or more other locations and printed locally.

Dot overflow when the ink is absorbed by the paper. Halftone dot gain.

Dpi
The number of dots per inch used to measure the accuracy of printed images and text.

Double-sided printing prints on both sides of the material.

The general term for the work of counting, folding, cutting, packing, etc., of a printed matter after it has been printed and printed before shipping.

Folding Example A folded sheet of paper that indicates the requirements of the imposition and the fold.

Gradual prints or gradual changes in grayscale or color within a certain area of ​​the screen. Gradient with different colors is called color mixing.

Halftone Screen A pattern consisting of dots of different sizes to simulate and print continuous tone or black and white images.

Imposition arranges the pages in the book on the plate in the correct order to meet the needs of a hand or other modification.

Wire binding A device connected to the output of a digital press to page, fold, and staple.

Lpi
Lines per inch are used with dpi per inch. Determine the accuracy of the halftone image. Lpi measures the number of screen lines per inch in a halftone grid.

When OPI replaces output, the process of automatically replacing low-precision images with high-precision images.

Ppi
The number of pixels per inch, the unit used when scanning the image, to measure the amount of detail in the image.

Raster processor A hardware used to convert electronic archive data, such as Postscript, into an array of dots and lines for printing. Abbreviation RIP.

Red, green, and blue are used in color modes on scanners, computer monitors, and light-emitting media that generally have red, green, and blue colors.

Rose pattern halftone images of four-color dots arranged at different angles form a flower-like pattern.

Sheet-fed presses use pre-cut sheets for printing, which is different from web presses.

Short prints are printed on 50 to 5000 copies at a time.

Spot colors use spot color inks to print colors that are different from those formed by the addition of four color inks.

Material Any material that can print inks or toners, such as paper, cardboard, clear films, labels, polyester films, etc.

The color code ink print samples of different colors. It shows all the colors that the printer can print and stably reproduce.

SWOP
Web Offset Publishing Standards. The color printing technology standards developed by the United States are used to ensure the accuracy of printing colors.

The toner charges the color particles and adheres to the oppositely charged photoreceptor tube, which is then transferred to the surface of the substrate by pressure or heat. Toner is used in many copiers, laser printers, and digital printers.

Trapping A prepress technique used to compensate for trapping variations in printing. Usually it uses the principle of overlapping adjacent colors.

Variable Dot Density A type of halftone printing for digital printing that improves image accuracy by changing the amount of ink or toner in each dot.

Web printers use a printing machine that prints webs of paper in a roll shape. The web stream passes through the machine continuously.