Editing CMYK color model (section)

== Other printer color models ==
CMYK, as well as all other process color printing, is contrasted with [[spot color]] printing, in which specific colored inks are used to generate the colors seen. Some printing presses are capable of printing with both four-color process inks and additional spot color inks at the same time. High-quality printed materials, such as marketing brochures and books, often include photographs requiring process-color printing, other graphic effects requiring spot colors (such as metallic inks), and finishes such as varnish, which enhances the glossy appearance of the printed piece.<ref>{{cite web |last=Davies |first=Helen |date=August 3, 2020 |title=Top 8 Large Format Printing Tips To Achieve High-End Projects |url=https://www.frontsigns.com/blog/top-large-format-printing-tips-to-achieve-the-highest-quality/ |url-status=live |archive-url=https://web.archive.org/web/20200929015633/https://www.frontsigns.com/blog/top-large-format-printing-tips-to-achieve-the-highest-quality/ |archive-date=September 29, 2020 |access-date=October 4, 2020 |website=Front Signs}}</ref>

CMYK are the process printers which often have a relatively small color [[gamut]]. Processes such as [[Pantone]]'s proprietary six-color (CMYKOG) [[Hexachrome]] considerably expand the gamut.<ref>{{cite journal|url=https://www.spiedigitallibrary.org/conference-proceedings-of-spie/5008/1/3D-color-separation-maximizing-the-printer-gamut/10.1117/12.472012.short?SSO=1|title=3-D Color Separation Maximizing the Printer Gamut|last=Zeng|first=Huanzhao|editor1-first=Reiner|editor1-last=Eschbach|editor2-first=Gabriel G|editor2-last=Marcu|journal=[[Proceedings of SPIE]]|series=Color Imaging VIII: Processing, Hardcopy, and Applications|volume=5008|year=2003|page=260|doi=10.1117/12.472012|bibcode=2003SPIE.5008..260Z|s2cid=20555157}}</ref> Light, saturated colors often cannot be created with CMYK, and light colors in general may make visible the halftone pattern. Using a [[CcMmYK color model|CcMmYK process]], with the addition of light cyan and magenta inks to CMYK, can solve these problems, and such a process is used by many [[inkjet|inkjet printers]], including desktop models.<ref>{{cite book |title = Sams Teach Yourself Adobe Photoshop Elements 2 in 24 Hours | author = Carla Rose | url = https://archive.org/details/samsteachyoursel00rose_4| url-access = registration | page = 108|publisher = Sams Publishing | year = 2003 | isbn = 0-672-32430-X }}</ref>