Patent ID: 7281870

Claim:
An ink jet recording apparatus comprising: a carriage for reciprocal movement while carrying recording means for effecting recording by ejecting ink; a platen for supporting a recording material at a position opposed to said recording means; a changing member for changing a distance between said recording means and said platen by moving said platen; a detecting member, provided on said carriage, for detecting recording positional deviation by reading a pattern recorded on the recording material by said recording means, an adjustment value being calculated from the detected positional deviation, wherein ejection timing of said recording means is adjusted on the basis of the calculated adjustment value so as to reduce deterioration of a quality of a recorded image; an opening formed in platen at a position facing a moving path of said detecting member; and a detecting portion, movable to a position where said detecting member can detect said detection portion through said opening in accordance with movement of said platen, for use in determining a position of said platen based on whether said detecting member detects said detecting portion.