Image forming apparatus
AssigneeBrother Kogyo Kabushiki Kaisha
InventorHiroshi NAKANO
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes a belt unit detachably installed in a main body, a first positioning mechanism provided in the main body to rotatably support a first support roller, a second positioning mechanism provided in the main body to rotatably support a second support roller, an urging mechanism that urges the second support roller in a direction to move the second support roller away from the first support roller, a reference protrusion provided in the belt unit in a predetermined positional relationship with the first support roller, and a reference wall disposed to face the reference protrusion in the main body at a position closer to the second support roller than the reference protrusion.
Claims13
An image forming apparatus comprising:
- a main body;
- and
- a belt unit detachably installed in the main body;
- wherein the belt unit comprises:
- a belt;
- a first support roller for supporting said belt;
- a second support roller for supporting said belt;
- a reference protrusion having a predetermined positional relationship with said first support roller;
- wherein the main body comprises:
- a first positioning mechanism for rotatably supporting said first support roller;
- a second positioning mechanism for rotatably supporting said second support roller;
- an urging mechanism that urges said second support roller to be moved away from said first support roller;
- and
- a reference wall at a position closer to said second support roller than said reference protrusion such that said reference wall faces said reference protrusion.
An image forming apparatus comprising:
- a main body;
- and
- a belt unit which is detachably installed in the main body;
- wherein the belt unit comprises:
- a belt,
- a first support roller for supporting the belt, the first support roller is capable of rotating around a first rotating axis;
- a second support roller for supporting the belt, the second support roller is capable of rotating around a second rotating axis;
- and
- a reference protrusion having a predetermined positional relationship with said first support roller;
- and
- wherein the main body comprises:
- a first positioning mechanism for rotatably supporting said first support roller;
- a second positioning mechanism for rotatably supporting said second support roller;
- an urging mechanism that urges said second support roller to be moved away from said first support roller;
- a reference wall at a position closer to said second support roller than said reference protrusion such that said reference wall faces said reference protrusion;
- and
- a position at which said reference protrusion abuts against said reference wall is disposed apart from a virtual plane by a predetermined distance on the opposite side to a side where said first positioning mechanism is provided, said virtual plane being formed by connecting said first rotating axis of said first support roller and said second axis of said second support roller.
Dependencies are inferred from the claim text.