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Why There Are Color Differences in Printing from Your PC
This article describes the basic properties of color, what the relationships are between them and the differences between what you see and what you actually get using your inkjet cartridges. Properties Most of you will have come across these three; Hue, Saturation and Brightness; if you have ever messed around with color settings of your images. Hue: For example; blue, green and violet are all hues. They are colors. The dictionary definition of 'Hue' is; "the attributes of colors that permits them to be classed as red, yellow, green, blue or an intermediate between any adjacent pair of these colors." Saturation: This refers to how vivid the color is. The higher the amount of gray relative to the amount of hue, the less vivid it will be. Brightness: Relates to the relative darkness or lightness of the color. In 1905 American artist A. Munsell published a color measurement system, naming the three parameters, Hue, Value and Chroma (Hue, Saturation and Brightness as above). This three dimensional relationship resulted in color identification in this format, for example; 7.5YR 7/12. Here we have a yellow-red hue tending with a value of 7 and a chroma of 12. There are 40 pages in the book covering all colors in the complete Munsell system. Monitor and printer color production Printer Printer colors are produced from inkjet cartridges emitting minute patterns of ink dots placed on paper. All colors that you see come from just four colors; cyan (C), magenta (M), yellow (Y) and black (K). As an aside, a mixture of cyan, magenta and yellow should produce black, but in reality a touch of black is needed to get it. Monitor A phosphor is a substance that emits light when subjected to radiation. Color phosphors are illuminated with electrons in your monitor and hence images are produced. There are three colored phosphors in each pixel on the screen; red (R), green (G) and blue (B). Monitor and printer color differences As will be aware, the printed output you receive hardly ever matches exactly that seen on your monitor 100% of the time. This is because the way that color is produced is different and the range of colors that are produced is different between the monitor and printer, as described above. There are ways to get a closer match. You can experiment with printer driver settings or use image editing/color management software to help match up the two. Printing Process Most inkjet printers can't produce variations of the three primary colors so they employ a process called 'halftoning' to represent the thousands of colors needed. The two methods used for this are 'Dithering' and 'Error Diffusion'. With 'dithering', different colored ink dots are aligned to give the appearance of neutral colors...suitable for large areas of color such as in graphs and bar charts. There are often additional settings such as 'Coarse Dithering'...for images with limited detail and shading, and 'Fine Dithering' for images with significant amount of detail. With 'error diffusion' inkjet cartridge dots are merged with surrounding color dots to produce natural colors with the possibility of subtle color gradation. Ideal for detailed images or photos. If there is only text to print then 'No Halftoning' should be selected. When scanning, be aware that it will be more difficult to get a good match because the scanner will make the image using the CMYK data format, then RGB on the monitor and finally changed again to the CMYK data format via the printer. This article may be reproduced in its entirety provided the resource paragraph below is included and all urls kept active. (c) Paul Curran, CEO of Cuzcom Internet Publishing Group and webmaster at this cheap ink cartridge & laser toner store, providing discounted brand name compatible ink cartridge and laser toner supplies. Sign up for the feed on our web site or the blog showcasing the products.
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How to Use SQLXML to Retrieve Data from SQL Server Database? Using SQL Server 2000 and above versions you can retrieve data from SQL Server in XML format directly from the database. Many XML related features were incorporated in the SQL Server database. This enables the development of XML enabled applications very easy and it makes exchange of data over internet easy. In this article we will discuss about how to use SQLXML to retrieve data directly from SQL server database in XML format. Quick System Restore with ASR Backups ASR (Automated System Recovery) is a feature available on the Windows XP Pro and Windows Server 2003 operating systems for quick and efficient system backup and restore. Getting Started with HTML The basic language of the internet is html. If you can do crossword puzzles, if you can write a report for your teacher or boss, you can be creating web pages in a matter of minutes. Top 9 Ways To Speed Up Your Surfing & Computing It seems like fast never quite rates fast enough. Connect Your IPAQ to Linux Choose Not To Conform 5 Steps to Removing PC Clutter It's hard enough as it is these days to get organized and then remain that way for weeks and months down the road. We are all very busy people, some of us with 9-5 jobs and one hour commutes, and others of us busy making our lives at home work for us, with children at tow and a variety of chores to do as well as errands to run. Cisco Certification: What To Expect On Exam Day Cisco Certification: Taking Your First Certification Exam Computer Consulting 101 PC Troubleshooting Advice While most small businesses really do need to find a good local computer consulting business to take care of their computer problems, there are some computer problems that are simple enough for even a technophobe to handle. At Computer Consulting 101, we've found there's one very simple piece of advice that often doesn't get communicated to non-technical small business end users: When in doubt, reboot first. Passwords and the Human Factor Passwords have a strange dual nature. The stronger and safer the password the more likely it will be undermined by human weakness. HTML Explained: Part 1 Want to save money while promoting your web-based business? Of course you do. Here's some advice on the matter, from a freelance copywriter who knows: it pays to learn the basics of HTML. FTP - File Transfer Protocol Explained File Transfer Protocol (FTP) is a protocol that is part of the TCP/IP suite. It is the standard for transferring large amounts of data from server to server and from servers to clients. There is a very good chance that you have downloaded files from FTP sites many times, though it may have seemed you were only downloading from a website. FTP allows you to transfer files over a variety of hosts with different operating systems and file systems. There are so many FTP servers on the Internet, some are private with secure logon names, other ones are public with anonymous logins. Basic Computer Thermodynamics That desk in front of you and everything else around you is made up of atoms. An atom consists of electrons orbiting around a nucleus. An atom is increadibly tiny. You could line up 10 million of them inside a millimeter. What if we could scale up an atom so that the nucleus was the size of a basketball? The orbits of its electrons would then be 15 miles away. D2X Digital SLRCoolpix 8800 Actually Refers to Two Nikon Cameras Addressing a D2X Digital SLRCoolpix 8800 search, this article provides a quick comparison of the Nikon D2X digital SLR and Coolpix 8800 cameras. How I Started Working With 3D Modeling Programs So I'll start from the very beginning. New Computer? Steps to Protect Your Computer Before Connecting to the Internet Getting a new computer should be an exciting and gratifying experience. After all, you'll be able to do things faster, safer and without having to worry that your old hard drive is so full that one more file will "break the camel's back." Favorite Things To Do With Home Technology Save money. Save 10-15% on utility bills per month. Work with products that have a good value now, but also save money throughout the ownership of the home. Get energy savings through lighting management, irrigation control, solar energy, and temperature control. Lower monthly bills-how can you say no to that? Your Computer Cant Keep Time A computer needs a certain amount of information to operate; for example, the date and time, the amount of memory installed, the number of drives and their configuration, and so on. In the early days of computers, either the user typed in this information each time the computer started, or it was set using DIP switches and jumpers. Today, computers store this information in a CMOS chip that uses a small battery to retain the information when the computer is shut off. Basic Computer Maintenance One of the most common questions computer users ask is, "How do I maintain my computer and keep it running great?" A computer is a lot like a car?it costs more than you think it should, it starts going down in value as soon as you bring it home and it requires regular maintenance to keep it running smoothly. Here are a few basic guidelines required to help keep your PC out of the shop: Got Virus? GOT VIRUS? Your Data is NOT lost forever! How to Place Home Theater Speakers You have your television and home theater receiver; you just bought your new speakers and subwoofer and are ready to test things out. It's time to break out the measuring tape because precision is vital to achieving the full potential of your home theater system. For this article, we are going to focus on a 5.1 surround sound system. The term "5.1" refers to the number of speakers and subwoofers in the system respectively. So for a 5.1 surround sound system, there are five speakers (the center channel, the two front speakers, and the two rear speakers) and one subwoofer.
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