User manual MICROTEK MACX R SWPROTX 0203

[. . . ] Microtek ScanWizard Pro TX Reference Manual For Mac OS X Copyright © 2003 by Microtek International, Inc. All rights reserved. Trademarks Microtek®, AritxTM, and ScanWizardTM Pro are trademarks or registered trademarks of Microtek International Inc. Adobe® and Acrobat® are registered trademarks of Adobe Systems Incorporated. Macintosh® and Apple® are registered trademarks of Apple Computer, Inc. All other products or name brands are trademarks of their respective holders. Important Documents that you scan may be protected under copyright law. [. . . ] Adaptive (default) creates a color palette table from the more commonly used areas of the color spectrum that appears in the image. Dither: The Dither option can improve the color quality of the 256indexed color image for photographs or continuous-tone images, using a technique of mixing available colors to simulate missing colors. Diffusion (default) uses the error diffusion technique to dither colors and produces the best quality for 256 colors. · G. Line art: Line Art images are made up of one bit of color (black or white) per pixel. Few editing options are available in this mode, but this mode is useful for images consisting purely of black and white or even single colors, such as mechanical drawings, blueprints, or fine-line illustrations. Black-and-White Diffusion: This is a single-bit black-and-white image dithered with error diffusion. The black and white pixels are arranged in a way as to "fool" the eye into seeing gray. Reference: The Settings Window 55 Resolution settings The settings related to resolution include the resolution box, the resolution list box, and the resolution unit. Resolution is the sampling of image pixels per measurement unit or the amount of pixel information stored in an image. Together, the image resolution and dimensions determine the file size of the image, which is measured in kilobytes (KB) or megabytes (MB). The resolution of an image is important in determining the quality of the output image. Resolution is also directly related to file size, and the higher the resolution, the larger the resulting file size will be. When dealing with resolution, remember to distinguish between optical resolution and interpolated resolution. Optical resolution is the "real" resolution as measured by the scanner's optics. Interpolated resolution is software-enhanced resolution and can be useful for enlarging very small images or for printing line art to obtain superior results. A. To set your resolution: Enter a resolution setting in the Resolution edit box, then press Enter. If the value you enter is too high or too low, the maximum or minimum resolution value is entered for you instead. Depending on the type of image you have selected (grayscale, color, line art, etc. ), a default resolution is displayed in the resolution box. After you enter your own resolution value, this value is then recorded for subsequent use, until a new value is entered and takes over. B. Resolution list box This provides predefined resolution values for easier selection of the resolution setting. To select your setting, press the up/down arrows next to the Resolution box, and choose your setting from the list box. 56 Microtek ScanWizard Pro TX for Mac OS X C. Resolution unit The unit of measurement for resolution is in ppi (pixels per inch) or lpi (lines per inch). Take note that lpi settings are dimmed if the ruler unit is in pixels. To select your resolution unit: · Choose ppi if your scanned images are intended for on-screen display. [. . . ] With UCR applied, less process inks and more black increases the density in the shadows. Reference: Appendix 115 Advantages & Disadvantages to UCR Undercolor removal within a TAC constraint reduces the problem of printing four solid layers of ink, one on top of the other, while each previous layer is still wet. Reducing the ink coverage, TAC, improves the ability of the paper to firmly hold each layer of wet ink. Also, replacing cmy ink with the less expensive black ink has proven more cost efficient on long runs that use more ink. Also, blacks and neutrals that print black are not influenced easily by shifts in the chromatic inks which cause color casts in the shadow tones. [. . . ]