Facts about Four-Color Printing

CMYK is the king of color in the printing world. Four-color printing, (a.k.a. full-color printing) uses the CMYK process, which consists of four ink shades: Cyan, Magenta, Yellow and Black. (sometimes called Key). Enjoy these interesting facts about four-color printing.

• CMYK gets layered
CMYK inks are semi-transparent, so instead of mixing these colors, they are layered together in the printing process. The outcome is bright, accurate, solid shades.

• Benefits of basic black
Any color, when lowered to the end of the spectrum, can create black, but this wastes ink. Including black in CMYK saves money and ink. Separating black from cyan, magenta and yellow in four-color printing optimizes the remaining colors and produces better results.

• C+M+Y+K=Subtraction
Four-color printing is often called a “subtractive” model because adding colored inks to white paper “subtracts” brightness from the paper.

• Spot-on colors
To create thousands of colors, four-color printing uses half-toning. Printing tiny dots of the four colors in varying amounts in a small pattern tricks the eye into seeing a particular color. Without half-toning, four-color printing would produce only six solid shades: cyan, magenta, yellow, green, purple and red.

• Avoid “shifty” colors
A computer monitor displays RGB (red, green and blue) colors, whereas printing presses use the CMYK process. To avoid a color shift in printing, design your file in CMYK or convert your RGB file to CMYK before submitting it.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1606 Sunset Avenue
Rocky Mount, NC 27804
P.O. Box 4025
Rocky Mount, NC 27803-4025
252-985-1000
800-868-5463
Fax: 252-985-1300
www.jimdickens.com

 

 

 

 

 

 

 

Bleed – In printing, the extension of the image beyond the trimmed edge or edges of the page.

Camera Ready Art
– Art fully prepared for camera reproduction according to the requirements of the printing process selected.  Camera Ready Art is black and white art that is clean, color separated, sized to fit and ready to be shot without retouching.

Color Separations
– The process of separating full color artwork and photographs into the four color components needed to create Process Color.

DPI
– The abbreviation for “dots per inch.”  A 300 dpi printer, for instance, is capable of printing 300 dots across and 300 down within one inch square.  DPI is a measurement of resolution for scanning, displaying, or printing.

Digital Printing
- A type of printing which uses digital imaging process that transfers the image directly onto plain paper immediately, without traditional offset rollers and plates.

EPS
- (EPSF) Encapsulated Postscript File. A vector based, computer graphics file format developed by Adobe Systems. EPS is the preferred format for many computer illustrations, because of its efficient use of memory and fine color control.

Full Color
– A color model that is based on four colors: Cyan(C), Magenta(M), Yellow(Y) and Black(K) and is also referred to as CMYK.  This model is the basis for all full color printing.  Full color printing is used for photographs.  Full color is also known as Four Color Process, Process Color or Four Color.

Gripper Edge
– This is a margin on a page 3/8” wide that must be left blank so that the printer has an area to grip the page as it passes through the press.

Halftone
– An optical illusion of a continuous tone where a dot pattern is used to trick the eye into seeing shades of gray. Most halftones are one-color halftones, printed with black ink on white paper. By blending the black of the tiny ink dots and the white of the paper, the human eye sees shades of gray.

JPEG/JPG 
- Joint Photographic Electronic Group. A common standard for compressing image data.  Common to refer to electronic images like photos as jpegs.  Typically are low resolution for web use or transferring via e-mail.  Low resolution jpegs cannot be used in professional printing.

PDF
- A short form for Portable Document Format, a file format developed by Adobe Systems. PDF captures formatting information from a variety of desktop publishing applications, making it possible to send formatted documents and have them appear on the recipient's monitor or printer as they were intended. To view a file in PDF format, you need Adobe Acrobat Reader, a free application distributed by Adobe Systems.

PMS
– A term frequently used to refer to the colors in the Pantone Matching System®.

Pantone Matching System®
- The Trade name for a color-matching system used by printers to specify inks for printing.  A specific formula is used to produce each shade, and each shade is assigned a specific number. Often referred to as “PMS”.

Pixel
– The smallest, most basic component of an image on a display screen.  A pixel is comparable to an individual dot in a printed photograph.  The number of pixels in an image determines its resolution.

Prepress
– The process of taking your materials, ideas and expectations and preparing them for printing.  Can be involved, expensive and is definitely something you should consult with your printing specialist.

Proof
– A sheet of printed copy that is a representation of a printed piece.

Register
– The placement of one image in the precise position over the next image to achieve correct alignment.

Screen Printing
- A printing process also called silk screening, where ink is transferred through a porous screen, such as nylon, onto the surface to be decorated. An emulsion or stencil is used to block out the negative, or non-printing areas of the screen. A squeegee forces ink through the open areas of the screen and onto the paper, plastic, cardboard, wood, fabric, glass, or other material. 

Spot Color
- Single colors applied to printing when process color is not necessary (i.e. one, two and three color printing)

TIFF
- Tagged Image File Format, a bitmapped file format used for the reproduction of digitally scanned images such as photographs, illustrations & logos.

 

 

 

 

item search search here      get quote ask for quote here