Patent ID: 7828400
Filing Date: 2010-11-09
Classification: B41J

Abstract:
1. An image forming apparatus comprising: a recording head including a plurality of nozzle arrays for ejecting each ink droplet per color for plural colors respectively in a first direction onto a transported recording medium; a transport mechanism for transporting the recording medium in a second direction in order to form an image thereon; wherein the nozzle arrays are placed in a predetermined interval, and in a position opposite to the transport mechanism; an inclination detection unit comprising a sensor for outputting a signal in order to generate information about a relative inclination between the second direction or the transport mechanism and the recording head around an axis that is perpendicular to the recording medium; and a correction unit for calculating based on the signal and correcting a relative inclination between the second direction and the recording head based on the calculation result; wherein said correction unit has a control unit for generating ejection information based on image information for inputting into said recording head, and the control unit generates ejection information by displacing in a nozzle row direction by a predetermined amount based on said signal; and wherein said predetermined amount is calculated from a reference position, a distance between a reference position and a nozzle row and said signal.