1. A method of printing a text with an apparatus using a plurality of channels, the method comprising: determining whether print data corresponds to a specified text by determining similarities between a plurality of channels of print data, and determining a degree of flatness of one of the plurality of channels; searching for a boundary area in the print data if the print data is determined to correspond to the specified text; and reducing some of the plurality of channels at the boundary area, and compensating for the one of the plurality of channels by a density of the reduced channels if the print data is determined to correspond to the specified text.