Patent ID: 7880908

Claim:
A print apparatus which prints image data on a recording sheet, comprising: a first calculation unit configured to calculate the number of printable sheets from the amount of remaining power in a battery of said print apparatus; a second calculation unit configured to calculate the number of printable sheets from the number of remaining recording sheets or the amount of remaining ink; a determination unit configured to determine the number of sheets printable by said print apparatus based on the number of printable sheets calculated by said first calculation unit and the number of printable sheets calculated by said second calculation unit; and a display unit configured to display the number of printable sheets determined by said determination unit, wherein before the start of a print operation, said determination unit determines, as the number of sheets printable by said print apparatus, the number of printable sheets calculated by said first calculation unit, and, after the start of the print operation, said second calculation unit calculates the number of printable sheets to cause said determination unit to determine the number of sheets printable by said print apparatus again based on the number of printable sheets calculated by said first calculation unit and the number of printable sheets calculated by said second calculation unit.