Dot gain is a phenomenon that causes printed material to look darker than intended. This happens because the diameter of halftone dots increases during the prepress and printing process. You typically find dot gain controls in applications like Adobe Photoshop..
Likewise, what does dot gain mean?
Dot gain, or tonal value increase, is a phenomenon in offset lithography and some other forms of printing which causes printed material to look darker than intended. It is caused by halftone dots growing in area between the original printing film and the final printed result.
Similarly, what is the main dot gain area in a printed image? Dot gain is an increase in the diameter of the halftone dot. If a dot pattern on film covers 30% of the image area and when printed covers 50%, this results in a totol dot gain of 20%. Total dot gain therefore is the numerical difference between the negatives and corresponding dot size on the paper.
In this way, how do I change the dot gain in Photoshop?
To select or enter dot gain settings, choose Edit > Color Settings. In the Working Spaces area, you'll use the Gray pop-up menu (Figure 4.21). You'll definitely want to ask your printing company about what settings to use; otherwise, you'll just be guessing and you might not like your end result.
What is a halftone image?
A halftone, or halftone image, is an image comprised of discrete dots rather than continuous tones. When viewed from a distance, the dots blur together, creating the illusion of continuous lines and shapes. By halftoning an image (converting it from a bitmap to a halftone), it can be printed using less ink.
Related Question Answers
How does screen ruling affect dot gain?
Screen ruling also affects dot gain readings. The higher the screen ruling the higher the dot gain. This too is due to the fact that there is more perimeter ( more dots ) with higher screen frequencies. Typically dot area and dot gain are measured in separate steps during the printing process.What is TVI in printing?
In some facilities, print and color quality are measured and referred to as dot gain. Others refer to it as tone value increase or TVI. They refer to the same printing phenomenon: Dots of color appearing too close together in one area giving the printed version of the product a darker quality than what was intended.What is ink density?
What is Ink Density? Density or reflective density to be more accurate, is a measure of the percentage of reflected light. In printing his usually means the percentage of light that is reflected from the paper and the ink.What is print contrast?
Print Contrast. A method of evaluating and optimizing the density of the ink deposited on the substrate during printing. The ink strength—or print contrast—is determined to take into account the solid ink density, the density of the ink in shadow areas of the image, and the dot gain.When was halftone invented?
1852
Who created Ben Day dots?
Benjamin Henry Day, Jr
How do I convert an Indesign PDF to grayscale?
Export a PDF To convert one to grayscale, you must export it as a PDF. Click “File” and choose “Export PDF,” then name your document and click “Save.” When the Export Adobe PDF window opens, click the “Standard” menu and select “None” -- a PDF standard doesn't allow you to choose a grayscale format. 
