Patent ID: 7869097

Claim:
A computer storage medium readable by a computer having a storage unit, the storage medium storing a computer program for transparent-printing second print data in superposition on first print data, the computer program, when executed by the computer, causing the computer to perform operations comprising: detecting whether or not the second print data is composed of a plurality of colors; when the second print data has been decided as being composed of the plurality of colors: dividing the second print data at a predetermined number of divisions; separating the divided data into a part for combining with the first print data and a part not for combining with the first print data; combining the part of the divided data set for combining with the first print data so as to be superposed on the first print data; and repeating the separating of the divided data and the combining of the part of the divided data by the same number of times as the number of divisions, and when the second print data has been decided as not being composed of the plurality of colors: separating the second print data into a part for combining with the first print data and a part not for combining with the first print data without dividing the second print data; and combining the part of the second data set for combining with the first print data so as to be superposed on the first print data.