Printing knowledge: What is CMYK?

CMYK - also called CYM or YMCK - is a subtractive color model used in color printing. A color model is a mathematical model for describing colors as tuples of numbers, usually 3-4 color components or values. CMYK stands for Cyan, Magenta, Yellow and Key (black), and the color model describes a formula for creating other colors by mixing pigments of these colors in varying amounts.


It is said that CMY mixture is subtractive (that is, magenta, cyan and yellow on a white background produces black). In CMYK model, magenta plus yellow produces red, cyan plus yellow makes green, and magenta plus cyan generates blue.

CMYK vs. RGB
CMYK, or four-color printing, generates a good final printout with excellent contrast. However, as the computer screen follows a RGB system, the color seen on the screen may be different from the one that comes in the final print. This is due to the differing palettes of CMYK and RGB. For example, the color (RGB, 0%, 0%, 100%), which is pure blue to human eye, is impossible to produce in CMYK. The nearest attainable color in CMYK is a dissimilar shade of purple. This disparity in conversion from RGB in the computer screen to CMYK reflects in the final print.

Black Ink and CMYK
Theoretically, and to an extent practically, black can be produced by mixing the magenta, cyan, and yellow - the subtractive primaries. But this is not suitable if we require a high quality print. To achieve higher quality, CMYK additionally uses black ink for coloring the print. In the following few lines, we'll see why black ink is being used over color combinations.

On closer analysis, it can be found that the mixing of magenta, cyan, and yellow does not produce black, but something nearer to black. Because of this, CMY is unsuitable for applications that need pure black.
Mixing of these three colors to produce black can raise a technical issue and this is the wetting of paper. Wetting of paper can cause serious problems in high speed printing where it is a prerequisite that the paper should become dry within a fraction of a second so as to prevent marking on the next page. Also, if the print is being made on low quality paper such as the newsprint, there is every chance of the paper being torn by the slightest of force being applied on it by the roller.
Black ink allows the printer to make considerable savings in terms of money as he/she only needs to pay for one type of ink rather than for three different colors. Further, black ink is cheaper than colored inks.
The quantity of black ink needed to substitute for the other colors varies with the technology used, the paper type and the nature of the ink. When black ink is combined with the other colors to increase the intensity, it is called as "blacker than black" or "rich black."

Conversion between CMYK and RGB
There is no solid rule by which one can convert CMYK to RGB and vice versa. This is because neither CMYK nor RGB is an absolute color space. Generally, while it is possible to effect an invertible transition between RGB and a subset of CMYK, the reverse process is not possible. That is, the conversion of a CMYK color to RGB, followed by the reverse conversion (that is from RGB to CMYK) may not result in the original CMYK color. Therefore, ideally, these conversions must not be used in any process where color matching is critical.


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How to Prepare Ready-To-Print Files

File Format
We accept all popular storage media.
The Copy Centers accepts a wide variety of industry-standard file formats such as .PDF, .DOC, .TIF, .JPG, .GIF and many more.


Resolution
For image files, the file must have a minimum of 300 dpi (dots per inch) resolution. The images designed for the web are done at a low screen resolution of typically 72 dpi. Print images need to be created at 300 dpi or there may be a substantial drop in the print image quality. If your file is not 300 dpi, you can not simply increase the dpi from a low resolution to a higher one by increasing the DPI in your imaging program.



What is Resolution?
Resolution also known as DPI (dots per inch) can be described as the number of dots that fit horizontally and vertically into a one-inch space. Generally, the more dots per inch, the more detail captured and the sharper the resulting image.



Color Mode
All color artwork and/or images should be provided in CMYK (cyan, magenta, yellow, black) color mode. All black and white artwork and/or images should be provided in grayscale color mode.
Fonts
Fonts should be embedded in .PDF files
Fonts must be outlined or converted to paths or curves in .EPS files
Some fonts have copyright restrictions and will not embed in .PDF files
For QuarkExpress, fonts and images must be included with all files submitted.

Safe Zone
All critical elements (text, images, logos, etc.) must be kept at least 0.25" (1/4") inside the edge. Anything left close to the edge may not print.
Bleed
Please build your print-ready digital files by adding 0.125" (1/8") dimension for all files requiring bleeds.
What's a Bleed?
It is the portion of a printed document that will be trimmed off when cut to the final size.
Why Bleed?
The purpose of a bleed is to continue a color, image or design to the edge of printed document.
Borders
Please allow 0.125" (1/8") cutting tolerance around your card. We recommend no borders due to shifting in the printing and cutting process. Borders may appear uneven.
Questions?
For questions regarding your print-ready file, please consult a professional graphic designer or contact us for assistance in the preparation and delivery of your print-ready files to us. (Warson Printing LIMITED)


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Book recommendation: Toddler Interpreter

《Toddler Interpreter》,A Parent’s Guide to Baby Sign Language for Hearing Babies and Toddlers.


Ian and Lisa share 20 years experience between them working with sign language, scientific research and children. Ian has worked in the Disability sector for 7 years teaching sign language to hearing children and adults who suffer severely from Autism Spectrum Disorders and Downs Syndrome. He first became interested in using baby sign language with children without disability when he became a father. After much research it became apparent that there were very few resources available to teach hearing children to communicate with sign language. He felt that there was a simpler way to bridge the temporary communication gap between parents and children in the first few years using baby signs that were age appropriate and based on natural gestures.

Lisa is a research scientist of 13 years experience and has worked with children with behavioral difficulties for 6 years. As a mother of two, she became interested in the use of baby sign language as she looked for ways to become a better parent. Her son suffered the tantrums and frustrations of the terrible twos until she was able to introduce baby sign language into their home. She has spent a great deal of time since researching baby sign language in order to avoid the same frustrations with their second child. She hopes that these baby sign language resources provide parents with a new and fun way to interact understand and communicate with your baby and toddlers.

Baby Sign Language is the most wonderful gift that you can give to your baby, letting them know from an early age that they are understood and loved.

Baby’s have the ability to interpret and understand what you are saying long before their vocal chords are developed enough to form words. Toddler Interpreter Baby Sign Language has been uniquely designed into five easy stages of learning. The most relevant baby signs are taught first making it easier to learn. It involves the use of speech while concurrently signing with your baby, using a vocabulary of keyword baby signs and gestures.

There are many proven benefits of using Baby Sign Language:
• Baby Sign Language reduces frustration for you and your baby by bridging the communication gap in the pre-verbal years
• Baby Sign Language stimulates brain activity and speech development, resulting in higher IQ.
• Baby Sign Language helps to accelerate the speech process, providing a strong foundation for early literacy.

How to contact LISA and buy the book?
Contact information:
Lisa Baade
Author and Company Director
Toddler Interpreter
Website: http://www.toddlerinterpreter.com/
Email: lbaade@bigpond.com
Online shop: http://www.toddlerinterpreter.com/

Services @ Warsonprinting.com -- 4. Delivery services

Air shipping
Sea Shipping
Door to Door
In addition to printing, finishing and packing, we have extensive experience in complete air, sea shipping and customs logistics services. For time-sensitive projects, we will make our greatest efforts for on-time delivery. This can be achieved through our 24-hour, 2-shift operation and the scientific project progress tracking system. Our extensive service ensures that all orders will be handled efficiently and safe to our customers.
Air shipping
Warson Printing use UPS, FedEx to delivery proofing, small quantity book. Customer can get product very soon, but the shipping fee is a bit expensive.
Sea Shipping
Warson Printing has some long-term partners who provide reliable sea shipping services. With advanced project arrangement, we can make reasonable shipping plan base on customers’ schedule. Meanwhile, Warson Printing will handle relevant customs logistics. Through the totally logistics solutions, our customer can get more economical and more prompt shipping service.
Door to Door
We can also arrange door-to-door delivery from china to customers’ warehouse. This service includes customs clearance and routing via inland delivery freight carrier. All orders will be handled efficiently and safe to our customers.

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