Note: These tend to change often. Check the root directory of the CD-ROM or the web site ScanHelp.com for the most up to date version of tech tips. These are presented for learning purposes only.

Solution:
This occurs when the SCSI terminator is not installed correctly. SCSI is a way of hooking several devices of your computer in a chain. Every SCSI chain needs a terminator. This should be on the last device on the chain. Example: If your scanner is on the last device, you should plug the terminator into the scanner and the cable into the terminator. SCSI chains can be tricky. Check and see if all your cables are installed correctly and that the last device is correctly terminated. This can also happen when two SCSI devices are set for the same SCSI/ID number. You should check your SCSI/ID numbers and change any that conflict. Then try again.
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Solution:
Art-Scan stores your last settings in its resource file. If your computer bombs while you are using the scanner, it's possible for these settings to get messed up. Try holding down the Option key when you Acquire Art-Scan. This will reset the defaults in our software and you will be able to use it. Another possibility is to delete the Art-Scan Preferences file from your Photoshop folder. If you still cannot get into your software, simple reload Art-Scan software from the orginal disk.
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Solution:
If you scan line art at 600 dpi and print it at 600 dpi you will get a log of jaggies. In the Line Art mode the sacnner does not see any gray areas. When you perform a line art scan, the scanner cannot tell when white stops and black starts. The output will have gary pixels on every edge. The scanner uses this to make it white or black. This means that on a diagonal line some of the dots are going to become white and some will become black, giving you a stair step jagged line. On a 600 dpi scanner we suggest that you scan line art at 2400 dpi and use our EPS mode option. This will take care of any jaggies that you may have.
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Solution:
To correct this you need to modify the midpoint of the scan. This is located under Spectrum Levels and allows you to input a number from 0-100%. The higher numbers will make the artwork thinner when you raise the midpoint. The lower numbers will make it thicker. You can use this if the artwork appears too thin or too thick.
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Solution:
The scanner uses fluorescent bulbs and for very small items not all the light reflects off at a 45° angle. You may end up getting some black coming into what is white and vice-versa.
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Solution:
This can be caused by several different things. If you have had your scanner for a while and know for a fact the lines were not there when you first purchased the scanner, you may consider replacing the bulb. As you're replacing the bulb, look at the calibration strip underneath the scanner to make sure that it is clean and not gray. This can affect your scan. Or, you may have a bad CCD. If the streak s in the same place every time you can, you probably have some type of electronic failure. Call your scanner manufacturer and ask for a replacement.
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Solution:
These lines have resulted because the sketches were done in pencil and were very light. This makes it very hard for the program to pick up what is white and what is black. Lower the threshold number using the scroll bar to make these lines daker and the lines you're getting will disappear.
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Solution:
This problem occures because Art-Scan pulls a lot of hardware detail out during a line art scan. At times the hardware is not accurate at high resolutions. To correct this, simply turn on the Descreen/Dewave feature.
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Solution:
Change the line screen in your program to match your scanner for better printouts. For example, in Photoshop the default line screen is 47, which is optimum for only a 300 dpi printer. If you have a 600 dpi printer, change the line screen to around 85, or 100 to 110 for a 1200 dpi printer. You can change the line screen frequency in Photoshop by going to the Page Setup dialogue box and clicking on screens. The Halftone screens dialogue box will appear and you can set the appropriate line screen frequency for the printer you want to print on.
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Solution:
To switch between your scanners within Adobe Photoshop is simply hold down the shift button before you click to import Art-Scan Pro 5. Using Viewingbooth simply hold down the shift button after opening viewingbooth before Art-Scan opens then it will prompt for the new driver to be used.
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