To select an optional pattern from the abundant patterns on the spot and to produce a seal in a short time by optionally selecting one pattern and one type out of the various kinds of patterns and types and outputting image data corresponding to the pattern and shape data corresponding to the type to a printing device.

Many pieces of high-resolution image data showing many kinds of picture patterns are included in an image file 42. Then, the data of the file 42 and outline data 43 are periodically and automatically updated by a server. First of all, the data selected from the file 42 and the data 43 is visualized at a display device such as a CRT or a liquid crystal panel so as to be confirmed. After an outputted image is confirmed on a screen, the selected pattern is printed by a seal printing machine. Besides, it is cut so as to be fit for the shape of the housing of the designated type compact electronic equipment. Then, the decoration seal is peeled from a peeling paper and stuck to the housing of a cellular phone and the like being an object.