IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND RECORDING MEDIUM

摘要

An image reading device includes an image reading section, an image processing section, and a density reference member. Based on a location of a defect in the image reading section or in the density reference member, the image processing section determines whether or not to at least partially restrict either a read range of the image reading section when the image reading section reads an original document or usage of a result obtained by reading the original document by the image reading section. The image processing section determines whether or not to apply a smoothing process to each density value detected by reading the original document by the image reading section. The determination is made based on a comparison between a normal-value determining threshold and each density value detected by reading the density reference member by the image reading section.

主权项

1. An image reading device for reading an original document, comprising:
a first image reading section configured to detect a density value of each of a plurality of pixels constituting image data; a first density reference member; and an image processing section configured to perform image processing on the image data, the image processing section
determining whether or not to at least partially restrict either a read range of the first image reading section when the first image reading section reads the original document or usage of a result obtained by reading the original document by the first image reading section, the determination being made based on a location of a defect in the first image reading section or in the first density reference member, anddetermining whether or not to apply a smoothing process to each density value detected by reading the original document by the first image reading section, the determination being made based on a comparison between a normal-value determining threshold and each density value obtained by reading the first density reference member by the first image reading section.