Patent ID: 11927909
Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Field: Optics (Instruments)
Classification: CPC G  F | IPC F  G

Claim 13:
14. An image forming apparatus, comprising:
a main body;
a development cartridge installable to the main body and detachable from the main body, the development cartridge including:
a photoconductor, and
a developing roller, to supply a printing material to the photoconductor;

a first coupler, including:
a first shaft, and
a first coupling structure disposed on an end part of the first shaft, the first coupling structure including:
a first body,
a first magnet disposed in the first body, and
a first plurality of protrusions which protrude from the first body in an axial direction; and

a second coupler fixed to the main body to rotate the developing roller via the first coupling structure, the second coupler including:
a second shaft which protrudes from the second coupler, and
a second coupling structure disposed on an end part of the second shaft, the second coupling structure including:
a second body,
a second magnet or ferromagnetic material disposed in the second body magnetically attractable to the first magnet to align the first coupling structure with the second coupling structure, and
a second plurality of protrusions which protrude from the second body in the axial direction to engage with the first plurality of protrusions.