Patent ID: 6607260
Filing Date: 2003-08-19
Classification: H04N

Abstract:
A recording apparatus for forming an image by means of main scanning as a reciprocating operation of a recording head and sub-scanning as a relative moving operation between the recording head and a recording medium in a direction different from the main scanning direction, comprising:image formation means for forming a reference image at a first predetermined position on the recording medium during a forward direction main scanning of the recording head, the reference image extending in a sub-scanning direction, while forming particular images at second predetermined positions on the recording medium during the forward direction main scanning and a reverse direction main scanning of the recording head, wherein the first predetermined position is different from the second predetermined positions; image detection means for performing main scanning on the recording medium to detect the reference image and the particular images formed during the forward direction main scanning and reverse direction main scanning; measuring means for measuring an image interval in the main scanning direction between the reference image and each of the particular images formed during each of the forward direction main scanning and reverse direction main scanning, based on output from said image detection means; and data processing means for calculating the amount of offset between a recording position of the particular images formed during the forward direction main scanning and another recording position of the particular images formed during the reverse direction main scanning, based on measurements carried out by said measuring means.