Sensor unit and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorKeita Shigihara
Life of this patent
Estimating the term…
Abstract
A sensor unit includes a plurality of sensors configured to detect a toner image carried on an image bearing member; and a duct including a suction portion; a plurality of branch duct portions. The branch duct portions each includes a discharging portion having a discharge opening. At least one of the branch duct portions includes a first path for discharging the air in a direction, and a second path connected with the first path portion at a downstream position to discharge the air in the direction. The sensor unit further includes a guide portion provided in the second path and extended crossing with an extension of one of inner walls of the first path, the guide portion being capable of branching the air in the second path toward the discharge opening.
Claims11
A sensor unit comprising:
- a plurality of sensors configured to detect a toner image carried on an image bearing member;
- a duct configured to feed air to surfaces of said plurality of sensors,
- wherein said duct includes,
- a suction portion having a suction opening configured to take the air in,
- a plurality of branch duct portions configured to branch the air taken in through said suction opening and to feed the air toward said sensors;
- wherein said branch duct portions each including a discharging portion having a discharge opening configured to discharge the air passed through the branch duct portions;
- wherein at least one of said branch duct portions includes a first path portion disposed at a upstream position and configured to discharge the air in a direction, and a second path portion connected with said first path portion at a downstream position and configured to discharge the air in a direction which is different from the direction in which said first path portion discharges the air;
- said duct further including,
- a guide portion provided in said second path portion and extended crossing with an extension of one of inner walls of said first path portion, said guide portion being capable of branching the air in said second path portion toward said discharge opening.
Dependencies are inferred from the claim text.