Patent ID: 7832332

Claim:
A printing device, comprising: ultraviolet irradiation means for irradiating a printed paper with ultraviolet radiation; attaching/detaching means for selectively attaching and detaching to and from a printing device main body a print drum for ultraviolet curable ink, installed with an ultraviolet curable ink, and a print drum for non-ultraviolet curable ink, installed with a non-ultraviolet curable ink; print drum detection means for detecting whether the print drum attached to the printing device main body via the attaching/detaching means is either the print drum for ultraviolet curable ink or the print drum for non-ultraviolet curable ink; first control means for operating the ultraviolet irradiation means when attachment of the print drum for ultraviolet curable ink is detected by the print drum detection means, and stopping the operation of the ultraviolet irradiation means when attachment of the print drum for non-ultraviolet curable ink is detected by the print drum detection means; paper conveying means for conveying a printed paper to be irradiated with the ultraviolet radiation, a paper conveying speed of the paper conveying means increasing as a printing speed increases, and the paper conveying speed of the paper conveying means decreasing as a paper size in a paper conveyance direction decreases; paper conveyance driving means for driving the paper conveying means; and second control means for controlling the paper conveyance driving means so as to make a change to conveying speed of the paper conveying means in response to printing speed information and paper conveyance direction size information only when attachment of the print drum for ultraviolet curable ink is detected by the print drum detection means such that a distance between consecutive printed papers is changed by the second control means from a first distance before the paper conveyance driving means to a second distance after the paper conveyance driving means.