Printer power supply with good heat dissipation

The utility model discloses a printer power supply with good heat dissipation, which comprises a power supply box, a bottom air inlet narrow box, a top exhaust hood, an air gathering side hopper, a micromotor and fan blades, the top of the power supply box is provided with an upper exhaust hole, the top exhaust hood is covered on the upper exhaust hole, the bottom of the power supply box is provided with the bottom air inlet narrow box, and the bottom air inlet narrow box is provided with the micromotor. The micro motor is mounted at the bottom of the inner side of the power box, the fan blades are connected to the micro motor, an integrated circuit board is arranged above the fan blades, the wind gathering side hoppers are arranged at the bottoms of the two sides of the integrated circuit board, and a conduction calandria is connected to exhaust hopper openings of the wind gathering side hoppers. A plurality of arc-shaped pipes are connected and mounted at the tail end of the conduction calandria, and a bott