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 Advanced Imaging  7-1

Chapter 7

 

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Advanced Imaging

Chapter Overview

Levels of Gray
Line Screens
Scanner Resolutions

Line Art Scanning
Halftone Scanning
TIFF, PICT, EPS Formats

Gamma Corrections
Enhanced Screening
Accurate Calibration Technology
Page Design

Typefaces and Fonts
Typeface Forms

Other Elements of Design

Orientation
Pitch
Point Size and x-Height
Spacing
Page Design Tips

Содержание Accel-a-Writer 8200

Страница 1: ...of Gray Line Screens Scanner Resolutions Line Art Scanning Halftone Scanning TIFF PICT EPS Formats Gamma Corrections Enhanced Screening Accurate Calibration Technology Page Design Typefaces and Fonts...

Страница 2: ...7 2 Advanced Imagingbb ___________________________________ Notes...

Страница 3: ...for adding finishing touches for a truly professional image Levels of Gray The resolution of a laser printer is measured in dots per inch dpi The standard resolution on your Accel a Writer 8200 is 600...

Страница 4: ...er Resolution LPI 1200 x 1200 dpi 75 800 x 800 dpi 50 600 x 600 dpi 38 Line Screens Knowing how many levels of gray you would like to achieve is one factor in determining the appropriate line screen t...

Страница 5: ...ize For example if a line screen of 95 is used the scanner resolution should be set to 190 dpi 95 x 2 If that resolution cannot be selected choose the next higher resolution available Also scanner res...

Страница 6: ...using the formulas in the previous section Halftone Scanning Note Different versions of PageMaker may work differently See the application manual for details QuarkXpress only allows you to change the...

Страница 7: ...hen dark photos are scanned Your Accel a Writer 8200 offers seven gamma settings 0 through 6 with 0 as the default Settings 0 through 5 progressively lighten the midrange values If you need a negative...

Страница 8: ...Black White Input Levels Gamma 5 Black White 1 1 0 Output Levels Black White Input Levels Gamma 4 Black White 1 1 0 Output Levels Black White Input Levels Gamma 3 Black White 1 1 0 Output Levels Blac...

Страница 9: ...e default enhanced screen is setup under the MISC SCREEN menus If you use the software printer setup you can select the levels of gray and gamma settings simultaneously Gray level and line screen comb...

Страница 10: ...urate Calibration Technology XANT s Accurate Calibration Technology X ACT allows you easily to calibrate the printer s engine to print more precise horizontal and vertical dimensions within the width...

Страница 11: ...In a Macintosh environment to calibrate line lengths and adjust the printer margins 1 Start Command Center by double clicking its icon 2 Select X ACT Calibration from the General menu The following s...

Страница 12: ...ter or longer than the measurement above the vertical scroll bar in figure 7 3 adjust the scroll bar until the measurement reads the exact length of your line 7 Click Update Print When the new page pr...

Страница 13: ...f the x axis is low move the x scroll bar right until you reach the desired number of units 13 Click Set Print An alignment page with new settings prints 14 Measure where the x and y axes cross If pos...

Страница 14: ...e prints with a horizontal and a vertical line on it 7 Measure the horizontal line If it is shorter or longer than the measurement to the right of the horizontal scroll bar fig 7 5 adjust that bar unt...

Страница 15: ...Align Printer Margins 11 Click Print Test An alignment test page prints giving current printer settings at the bottom 12 Measure where the x and y axes cross They should cross 1 up from the bottom an...

Страница 16: ...hanical side allowing you such freedom as scaling rotating and filling text and graphics However a basic understanding of terms and elements of page design can help you add finishing touches for a tru...

Страница 17: ...typefaces include those which have combinations of serif and sans serif designs as well as graphic type characters such as arrows hearts squares or Greek symbols Each typeface category lends itself to...

Страница 18: ...e Demi NewCenturySchlbk Roman ITC AvanteGarde DemiOblique Palatino Bold Palatino BoldItalic Miscellaneous Palatino Italic Symbol Palatino Roman ZapfDingbats Times Bold Times BoldItalic Times Italic Ti...

Страница 19: ...a cluttered appearance Other Elements of Design Other elements of design besides typeface forms include orientation pitch point size and spacing Orientation The terms portrait and landscape orientati...

Страница 20: ...e number of characters which can fit horizontally within one inch For example your printer has the PCL typeface Courier 10 pitch 12 points Ten characters fit within an inch and the size is 12 points i...

Страница 21: ...ender the downward stoke within a character set fig 7 10 6Point 8 Point 10 Point 12 Point 14 Point 18 Point 24 Point 54 Point Ready 72 Point PostScript Ascender x Height Descender Fig 7 10 Point Sizes...

Страница 22: ...ters For example the letter l needs less space than a w Except for Courier the rest of your printer s resident PostScript typefaces are proportionally spaced Proportional spacing is more legible bette...

Страница 23: ...ext All capitalized text is much harder to read than mixed case text Vary paragraph lengths to help readers keep track of where they are on the page Keep most paragraphs to five lines or less to help...

Страница 24: ...7 24 Advanced Imagingbb ___________________________________...

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