Chapter 4 Problem Solving and Service Information.

MiraScan

Q: Is the scanner TWAIN compatible?

Q: How to eliminate moire pattern?

Q: Why the image is always darker compared to the original?

Q: Is the scanner TWAIN compatible?

A: The scanner is TWAIN compatible. With this specification, the scanner can work with any Windows or Mac applications that support the TWAIN standard. The TWAIN compliance makes it possible for the scanner to integrate the power of hardware and software.

Q: How to eliminate moire pattern?

A:These printing materials are output with CMYK halftone cells at different screening frequency and screen angle; that is, a non-continuous tone original like the photo. Even we could not see the patterns with naked eye, once we use magnifier or scanner, we could easily capture these moire pattern. There is nothing wrong with the scanner. The MiraScan driver provide the descreen function to remove these moire patterns. To enable the function, please set the descree check box Normal. See the following picture.

Q: Why is the scanned image darker compared to the original?

A: Please adjust the gamma value from the Monitor Gammamenu.

Enable the gamma setting by clicking Monitor from Output Device submenu in Setting menu. (see following picture)