Adobe Illustrator CS4 Instrukcja Użytkownika Strona 426
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USING ADOBE ILLUSTRATOR CS4
Printing
Setting the proper screen frequency for printing gradients, meshes, and
blends
When printing your file, you may find that the resolution of your printer, when combined with the chosen screen
frequency, allows fewer than 256 levels of gray. A higher screen frequency decreases the levels of gray available to the
printer. For example, if you are printing at a resolution of 2400 dpi, using a line screen higher than 150 results in fewer
than 256 levels of gray. The following table lists the maximum line-screen setting you can use with printers to maintain
all 256 levels of gray:
See also
“Change the printer resolution and screen frequency” on page 408
Calculate the maximum blend length for gradients
Illustrator calculates the number of steps in a gradient based on the percentage of change between the colors in the
gradient. The number of steps, in turn, determines the maximum length of the blend before banding occurs.
1 Select the Measure tool , and click the beginning point and the endpoint of the gradient.
2 Note the distance displayed in the Info panel on a piece of paper. This distance represents the length of the gradient
or color blend.
3 Calculate the number of steps in the blend using this formula:
Number of steps = 256 (number of grays) X Percentage change in color
To figure out the percentage change in color, subtract the lower color value from the higher color value. For example,
a blend between 20% black and 100% black is an 80%—or 0.8—change in color.
Final Imagesetter Resolution Maximum Line Screen to Use
300 19
400 25
600 38
900 56
1000 63
1270 79
1446 90
1524 95
1693 106
2000 125
2400 150
2540 159
3000 188
3252 203
3600 225
4000 250
- ILLUSTRATOR 1
- Copyright 2
- Contents 4
- Chapter 1: Resources 8
- Help and support 9
- Printed resources 10
- Support resources 10
- Illustrator video tutorials 11
- What’s new 14
- New drawing and color tools 15
- Chapter 2: Workspace 17
- Default Illustrator workspace 18
- Search For Help box 19
- Control panel overview 21
- Customizing the workspace 22
- Dock and undock panels 23
- Move panels 24
- Add and remove panels 24
- Manipulate panel groups 24
- Stack floating panels 24
- Resize panels 25
- Save and switch workspaces 26
- Tools panel overview 27
- Select a tool 29
- Change tool pointers 29
- Workspace 31
- Type tool gallery 32
- Painting tool gallery 32
- Reshaping tool gallery 33
- Symbolism tool gallery 34
- Graph tool gallery 35
- Files and templates 37
- Illustration window 45
- Delete an artboard 47
- Select and view artboards 47
- Edit artboards 47
- Move an artboard 47
- Show or hide artboard rulers 48
- Use the grid 54
- Use guides 54
- Smart Guides 55
- Smart Guide preferences 56
- Info panel overview 57
- Setting preferences 58
- Undo and redo changes 59
- Automating tasks 59
- Drawing with the Pencil tool 67
- Pencil tool options 69
- Drawing with the Pen tool 70
- Editing paths 74
- Delete a segment 76
- Extend an open path 76
- Connect two open paths 77
- Join two endpoints 77
- Erase artwork 81
- Split a path 83
- Tracing options 85
- 1 Select the tracing object 86
- 2 Do any of the following: 86
- Symbols panel overview 89
- Place a symbol 90
- Create a symbol 90
- Modify a symbol instance 92
- Expand a symbol instance 92
- Edit or redefine a symbol 93
- Symbol libraries 93
- About symbol sets 94
- Resize symbol instances 96
- Rotate symbol instances 96
- Stain symbol instances 96
- Symbolism tool options 97
- Drawing flares 98
- See also 100
- About spot and process colors 105
- About spot colors 105
- About process colors 105
- Selecting colors 106
- Display only web-safe colors 108
- Display the Color Picker 108
- Using and creating swatches 110
- Edit a swatch library 113
- Add all document colors 113
- About color groups 116
- USING ADOBE ILLUSTRATOR CS4 118
- Save changes to a color group 123
- ❖ Do one of the following: 124
- Assign colors to your artwork 127
- Reduce colors in your artwork 130
- Kuler panel 131
- Chapter 5: Color management 137
- Keeping colors consistent 139
- Soft-proof colors 146
- Soft-proof colors (Acrobat) 148
- Color conversion options 158
- About rendering intents 159
- Chapter 6: Painting 160
- 1 Select the object 164
- 2 Do one of the following: 171
- Set Live Paint gap options 175
- About brushes 176
- Apply brush strokes 178
- Paintbrush tool options 178
- Brush options 180
- Scatter brush options 181
- Art brush options 182
- Pattern brush options 182
- Painting 183
- Remove an opacity mask 188
- Apply or edit a gradient 193
- Edit mesh objects 197
- Isolate a path inside a group 206
- Isolate a layer or sublayer 206
- Select filled objects 209
- Repeat or invert a selection 212
- Save a selection 212
- Move an object by dragging 215
- Move multiple objects at once 216
- Reflect or flip objects 220
- Reflect by specifying an axis 221
- Create a new layer 224
- Consolidate layers and groups 225
- Transform panel 232
- Scale multiple objects 234
- Reshape using envelopes 237
- Combining objects 240
- Pathfinder options 241
- Apply Pathfinder effects 241
- Work with compound shapes 244
- About compound paths 245
- Fill rules 246
- Create blends 252
- Blend options 253
- Revolving an object 257
- 5 Click OK 258
- Extrude & Bevel options 259
- Revolve options 259
- Surface shading options 259
- Lighting options 260
- Add a custom bevel path 261
- Map artwork to a 3D object 262
- 6 Do any of the following: 263
- Importing bitmap images 268
- Photoshop import options 273
- Saving artwork 274
- Flash export options 283
- Create an Adobe PDF 289
- Create a layered Adobe PDF 289
- Adobe PDF presets 290
- Customize PDF presets 291
- Adding security to PDF files 297
- Security options 297
- File information and metadata 298
- Chapter 10: Type 300
- Resize a text area 303
- Creating type on a path 308
- 3 Do one of the following: 309
- Edit the spelling dictionary 313
- Assign languages to text 313
- About Unicode 314
- About fonts 314
- OpenType fonts 314
- Previewing fonts 315
- Specify a typeface size 316
- Find and replace fonts 316
- Work with missing fonts 316
- Find and replace text 318
- 1 Select the type object 323
- Adjust kerning 326
- Special characters 327
- Prevent words from breaking 335
- Composition methods 335
- Set tabs 337
- Repeat tabs 337
- Move tabs 338
- Remove tabs 338
- Remove style overrides 340
- Exporting text 341
- Specify a burasagari option 350
- 4 Do any of the following: 353
- Delete a composite font 354
- Export a composite font 354
- Update selected legacy text 354
- Appearance attributes 356
- Edit an attribute 357
- Summary of effects 364
- Artistic effects 365
- Graphic Styles panel overview 374
- Create graphic styles 375
- Apply a graphic style 375
- Use graphic style libraries 376
- Work with graphic styles 376
- • Color Mode: RGB 380
- • Raster Resolution: 72 ppi 380
- Slices and image maps 381
- Select slices 383
- Set slice options 383
- Create image maps 385
- About SVG 385
- Creating animations 388
- Optimizing images 391
- Navigate in the dialog box 392
- Optimize an image for the web 393
- Optimization settings for GIF 398
- Web graphics 400
- Sort a color table 402
- Shift a color 402
- Map colors to transparency 403
- Lock or unlock a color 403
- Delete selected colors 404
- Save a color table 404
- Load a color table 404
- G. Encoding menu 407
- Set output options 408
- HTML output options 408
- Slice output options 409
- Background output settings 410
- Saving Files output settings 410
- Scale a document for printing 415
- Printer’s marks and bleed 419
- PostScript printing 421
- About flattening 428
- Overprinting 435
- Trapping 436
- Create a spread or choke 438
- Trap a line 439
- Print presets 440
- Apply print presets 441
- Edit print presets 441
- Delete print presets 441
- 1 Choose File > Print 442
- Chapter 14: Automating tasks 443
- Record an action 444
- Specify playback speed 446
- Save a set of actions 448
- Load a set of actions 448
- Organize action sets 448
- Use a script 450
- Enter graph data 457
- Enter labels 458
- Scatter graph data 459
- Pie graph data 459
- Column graph data 459
- General graph options 462
- Add drop shadows 462
- Format pie graphs 463
- Combine different graph types 463
- Select parts of a graph 464
- Format the text in a graph 464
- About graph designs 465
- Add totals to a column design 467
- Create a marker design 467
- Reuse a graph design 468
- Customize keyboard shortcuts 470
- Default keyboard shortcuts 471
- Keys for viewing artwork 472
- Keys for drawing 473
- Keys for selecting 474
- Keys for moving selections 474
- Keys for editing shapes 475
- Keys for painting objects 475
- Keys for transforming objects 476
- Keys for working with type 477
- Keys for using panels 478
- Keys for the Actions panel 478
- Keys for the Brushes panel 479
- Keys for the Color panel 479
- Keys for the Gradient panel 479
- Keys for the Layers panel 480
- Keys for the Swatches panel 480
- Keys for the Transform panel 481
- Function keys 481
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