Toner cartridge and laser printer

A laser printer, comprising:

• a housing;
• a drum cartridge assembly;
• and
• a toner cartridge, comprising:
• a cartridge body comprising a first side and a second side that are at opposite positions, wherein a hole extends in the first side of the cartridge body, and a window is disposed on the second side of the cartridge body;
• a toner hopper disposed in the cartridge body, wherein the toner hopper is configured to accommodate toner, and a supply opening exposed in the window is disposed at a position that is on the toner hopper and that faces the window;
• a first agitator disposed in the toner hopper, wherein the first agitator is configured to transport the toner in the toner hopper to the supply opening;
• a first hopper door slidably disposed on a side that is of the toner hopper and that faces the window, wherein a slot is disposed on the first hopper door, and the first hopper door is configured to open or close the supply opening when sliding;
• a first clamping hook disposed on the second side of the cartridge body, wherein the first clamping hook is configured to be clamped to the slot when the first hopper door closes the supply opening;
• and
• a handle slidably disposed on a side that is of the toner hopper and that is away from the window, wherein the handle passes through the hole and is exposed to an outer side of the cartridge body, and the handle is fastened to the first hopper door;
• wherein an installation hole extends in a side surface of the housing;
• wherein the drum cartridge assembly is disposed in the housing, the drum cartridge assembly comprises a hopper body, an accommodating groove is disposed at a position that is on a side of the hopper body and that corresponds to the installation hole, a toner inlet is disposed at a bottom of the accommodating groove, and the toner inlet is connected to an inside of the hopper body;
• and
• wherein the toner cartridge is assembled into the accommodating groove through the installation hole, and the supply opening of the toner cartridge and the toner inlet are opposite to each other.