| 摘要 |
A low-cost printing apparatus and printing control method through which the absence or presence of an ink tank and ink can be determined accurately regardless of the surrounding environment. The printing apparatus obtains the difference between a first signal, which is obtained from light received by a light-receiving element (16) in a case where a light reflecting surface (41) and an optical prism (42) are irradiated with light, and a second signal, which is obtained from light received by the light-receiving element (16) in a case where the light reflecting surface (41) and optical prism (42) are not irradiated with light, compares the difference with a predetermined threshold value and determines whether or not ink is present and/or whether or not the ink tank is present, based upon the result of the comparison.
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