Image forming apparatus, image forming method and image reading apparatus

摘要

An image forming apparatus includes an image reading section that reads an image on paper to generate image data, and an image forming section that forms on paper an image based on image data. The image forming section forms on paper a dimension correction image including marks. The image forming section includes a computation unit that performs computation using dimension correction image data, obtained by reading the dimension correction image, to generate dimension correction data, and a memory that stores the dimension correction data. The image forming section corrects image data using the stored dimension correction data and forms an image based on the corrected image data. The computation unit has a first computation mode of generating first dimension correction data based on distances between the marks and a second computation mode of generating second dimension correction data based on distances between edges of paper and the marks.

主权项

1. An image forming apparatus comprising:
an image reading section that includes a paper table on which paper is to be positioned and that reads an image on paper positioned on the paper table to generate image data; and an image forming section that forms an image on paper based on image data, wherein the image forming section has a dimension correction mode in which a dimension correction image used to correct dimensions of an image is formed on paper, the dimension correction image including a plurality of marks at positions separated from each other on the paper, wherein the image forming section includes
a computation unit that performs computation by using dimension correction image data to generate dimension correction data used to correct dimensions of an image, the dimension correction image data being obtained by the image reading section by reading, from paper on which the dimension correction image has been formed and which is positioned on the paper table, the dimension correction image, anda memory that stores the dimension correction data generated by the computation unit, wherein the image forming section corrects image data in accordance with the dimension correction data stored in the memory and forms an image based on the corrected image data, and wherein the computation unit has a first computation mode in which first dimension correction data is generated on the basis of distances between the plurality of marks in data of a dimension correction image represented by the dimension correction image data and a second computation mode in which second dimension correction data is generated on the basis of distances between individual edges of paper and the corresponding marks in data of a dimension correction image represented by the dimension correction image data, the first dimension correction data being one kind of the dimension correction data, the second dimension correction data being one kind of the dimension correction data, and wherein the image forming section corrects the image data by using the first dimension correction data in a first image formation mode and using the second dimension correction data in a second image formation mode.