Patent ID: 6091436
Filing Date: 2000-07-18
Classification: B41J

Abstract:
A method of correcting uneven densities in a thermal recording apparatus with which an image corresponding to image data is formed on a thermal recording material using a thermal head, comprising the steps of:determining a difference between a total sum of frictional forces between said thermal recording material and said thermal head corresponding to the image data of individual pixels in a preceding line and a total sum of frictional forces between said thermal recording material and said thermal head corresponding to the image data of individual pixels in a present line, based on a mathematical function that represents the relationship between said image data and the frictional force between said thermal recording material and said thermal head; andcorrecting said image data in said present line based on the difference between said total sum of frictional forces in said preceding line and said total sum of frictional forces in said present line.