User manual

6 • SCANNING LINE ART

ColorQuartet 5.0 Pro

6•Scanning line art

Scanning line art

Line art means material that does not contain photographic images or gray tones, but only ele-

ments in black and white. To reproduce line art acceptably, higher scan resolutions are neces-

sary than for photos.

1 • Make a pr

eview scan as either Color or Gray Scale – it doesn’t matter which.

2 • When the preview appears on screen, crop the image and double-click on it.

3 • In the S

can Setup window that appears, choose TIFF Line Art or EPS Line Art as the output

file format.

4 • When the Line Art Options dialogue appears, activate the CCITT Group 3 check box if you

want ColorQuartet to compress the file data. Otherwise click on Cancel.

5 • Set the S

ize & Resolution section of the Scan Setup window to Res.

6 • In the Res field, type in the desired number of lines per inch or lines per mm and press the

tab key to confirm.

7 • Type in the desired Output Size in millimeters or inches and press the tab key to confirm.

8 • Set the Quality Factor to 1.0 and press the tab key to confirm.

A large preview size is recommended for line art scans, because it gives

a much better basis for adjusting the breaking point (threshold)

between black and white.

In some cases, it may be useful to first make a small-sized preview of a

large area to establish the location of the originals on the scanner bed

or drum. Then define a smaller area and make the largest size preview

you can.

• CCITT Group 3-compressed TIFF files can be viewed in Photoshop 5.0 or

higher.

• Photoshop cannot open CCITT-compressed EPS files.

A good rule of thumb is to choose the same value as the resolution with

which the image will be output. For example, if you will be outputting

the image on a 600-dpi laser printer, type in 600 lines/inch.