Glass slide printing device

The invention belongs to the technical field of printing equipment, and discloses a glass slide printing device. The glass slide printing device comprises a thermal transfer ribbon frame and a printing mechanism, the thermal transfer ribbon frame comprises two vertical plates which are parallel to each other, an unwinding sleeve and a winding sleeve which are arranged on the two vertical plates respectively, a rotary guide piece which is rotationally arranged between the two vertical plates, and a plurality of guide rods which are arranged between the two vertical plates and surround the peripheral sides of the unwinding sleeve and the winding sleeve; the guide rod is used for guiding a thermal transfer ribbon, and one of the vertical plates is provided with a guide mounting hole; the printing mechanism comprises a shell, an unwinding assembly, a winding assembly, a rotary guide assembly and a mounting rod, the unwinding assembly, the winding assembly, the rotary guide assembly and the mounting rod are arrang