Overview

The MN86074 boosts image quality by applying various image processing techniques to the analog signal from an image sensor. Features include correction of laser printer dot spreading at the pixel level, processing to enhance the compression ratio, reproduction of halftone images with 64-gradation, two-dimensional MTF correction using moire suppression, and infinite shading for all pixels using a division technique. These combine to yield top image reproduction quality.

Features

● Image processing that yields top image quality

• Infinite shading for all pixels using a division technique

• Error dispersion processing that reproduces halftone images with 64-gradation

User-programmable gamma curve

• Two dimensional MTF correction

• High-quality reduction with a user-specified scaling factor

Preserves halftone gradation

Preserves fine black lines for text

● High-speed processing requiring only 2 ms per line for an A3 page at 200 dpi

● Built-in analog processing circuits: offset correction circuit, gain correction circuit, and 8-bit analog-todigital converter

● Drive signal generator for CCDs, CISs, and other image sensors