High Speed High Image Quality Printing on Plain Paper Using Symmetrically Arranged Color Bubble Jet Print Head

Abstract

To date, printer manufacturers have faced an ongoing dilemma: How to increase printing speed without sacrificing image quality, and vice versa. The new bi-directional printing system that utilizes the New “MicroFine Droplet Technology” has proposed to overcome the problem.In conventional color printing, simple bi-direction printing leads to inconsistency in color produced between forward printing and backward printing due to the difference of color placement order within each printing direction. With the new bi-directional printing system, however, two groups of ink nozzle rows with cyan, magenta and yellow are arranged symmetrically to eliminate the inconsistency of color produced between different printing directions. The result of this work is Canon's S750 and i850 bubble jet printer. The key technologies that enabled this new nozzle arrangement without sacrificing the cost and the size of the print head will be described in this paper.