Screen Frequency / Resolution

Resolution can be confusing, even for people who have been working in the trade for a long time. This is largely due to the fact that, in digital technology, resolution has to be considered in both the input stage (scan) and the output stage (Imagesetter or laser printer). Understanding these two resolutions is vital to the process of getting high-quality images.Halftone SpotsHalftone spots are the result of turning off and/or on the dots in a halftone cell. This is how an imagesetter creates variant dot sizes.Screen Frequency (Line Screen) The number of rows or Lines Per Inch lines of spots in a halftone image within a given distance (lpi)....

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Advance Scanning

What makes a good scan? In order to ensure a high quality reproduction, the initial scan must capture as much detail as possible. Check your scan against your original image to ensure that you've maintained as much detail as possible. This can take several rescans. You should also expect to do some tonal manipulation in Photoshop or other image editing program. Tonal manipulation is the key to setting the right contrast, overall tonal range and getting the most detail possible within the limitations presented by the paper and printing choices. See below for the tonal range specifications for specific paper stock types.Screen AnglesWhen working with multiple colors that overlap, such as duotones or CMYK, it is necessary to angle the halftone screens. To avoid moire patterns, angle the screen...

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How to Fix a Stuck Pixel on an LCD Monitor

If your LCD screen has a stuck or dead pixel (a point on the screen that is always lit or always dark), it is usually due to a transistor malfunction or uneven distribution of liquid in the liquid crystal display (TFT LCD). This can often be fixed.Steps.... Software Method Try running pixel fixing software (see Sources and Citations). Stuck pixels can often be re-energized by rapidly turning them on and off. If this fails, complete the following steps. Pressure Method Turn off your computer's monitor. Get yourself a damp washcloth, so that you don't scratch your screen. Take a household pen, pencil, screwdriver, or some other sort of...

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What is LCD Monitor?

LCD stands for Liquid Crystal Display, referring to the technology behind these popular flat panel monitors. An LCD monitor is distinguishable from a traditional CRT monitor as the latter has a bulky footprint with a depth of several inches and a weight of 30 - 50 pounds (13 - 23 kilograms) or more, while LCDs are commonly 1 - 3 inches (2.5 - 7.5 cm) thick and weigh less than 10 pounds (4.5 k). LCD displays were used on laptop computers before the technology improved enough to make the jump to desktop monitors. An LCD monitor consists of five layers: a backlight, a sheet of polarized glass, a "mask" of colored pixels, a layer of liquid crystal...

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What is a CRT Monitor?

CRT stands for cathode ray tube, describing the technology inside an analog computer monitor or television set. A CRT monitor or TV is readily recognizable by its bulky form. LCD monitors and plasma television sets, or flat panel displays, use newer digital technologies. The CRT monitor creates a picture out of many rows or lines of tiny colored dots. These are technically not the same thing as pixels, but the terms are often used interchangeably. The more lines of dots per inch, the higher and clearer the resolution. Therefore 1024 x 768 resolution will be sharper than 800 x 600 resolution because the former uses more lines creating a denser,...

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