An information terminal device having a drawing printing function to print a drawing such as a map or a route map is enabled to print the drawing without any reduction on rolled printing paper having a limited width. The information terminal device includes a printer for printing data, and an angle calculator. On the basis of the drawing data having the data of a drawing containing a bent point and the data of the angle of bend at that bent point, the angle calculator calculates the angle index, at which the rolled paper is folded to correspond to the bent point, and calculates the printing data, which divides the drawing at each bent point and which is taken in the longitudinal direction of the rolled paper, that is, the blank length which discontinues the drawing at the folded portion determined by the angle index. On the basis of the angle index and the blank length, the printer divides the drawing at each bent point and makes the printing data taken in the longitudinal direction of the rolled paper.