Patent ID: 7455401

Claim:
A line dot recorder comprising: a rotary drum having an outer periphery of a sufficient length to mount a printing medium thereon; a drum driving means for rotating said rotary drum; and a recording head provided close to an outer periphery of said rotary drum and having a plurality of recording elements in the form of jet nozzle orifices arranged in lines in a main scanning direction at intervals corresponding to a predetermined pixel density in a proper print area, wherein the outer periphery of said rotary drum has a length which is N (an integer of two or more) times a base length which is a length in a sub-scanning direction of the printing medium and is sufficient to mount and hold N sheets of the printing medium, and said rotary drum is arranged to be rotated so as to move the printing medium relative to said recording head in the sub-scanning direction at a speed greater than a standard speed such that dot recording to pixels of the printing medium of a regular length will be done with a predetermined pixel density at an operating period of said recording head, and such that dot recording to the pixels is carried out by N-pass printing with N rotations of said rotary drum to form images on the printing medium.