SHEET CONVEYER

摘要

A sheet conveyer has a casing defined with first and second conveying passages and respectively having first and second curved passages. The first and second curved passages curve in opposite directions. A flap rotatably provided to a second guide member constituting a curved outside part of the first curved passage. When the flap is at a first position, the flap blocks passage from a part of the first conveying passage to the connection position, while the second conveying passage is opened to the connection position. When the flap is at the second position, the first conveying passage is opened toward the connection position and a part of the second conveying passage is blocked with respect to the connection position. A guide surface constituting an upper surface of the first curved passage is closer to the third guide member than a guide roller when the flap is at the second position.

主权项

1. A sheet conveyer, comprising:
a casing in which a first conveying passage and a second conveying passage are defined, the first conveying passage extending from a first tray and having a first curved passage which is curved in a particular direction, the second conveying passage extending from a second tray and having a second curved passage, which curves in a direction opposite to the first curved passage, and connected to the first conveying passage at a connection position; a conveying roller configured to convey a sheet and arranged in the first conveying passage at a position opposite to the first tray with respect to the connection position; a first guide member arranged at the connection position and constituting a curved outside part of the first curved passage and a curved inside part of the second curved passage; a second guide member constituting a curved outside part of the first curved passage, in the first conveying passage, on a first tray side with respect to the first guide member; a third guide member constituting a curved inside part of the first curved passage; a guide roller provided to the first guide member and protruded toward a position close to the connection position; a flap rotatably provided to the second guide member, wherein the flap is maintained at a first position in a neutral state, the flap blocks passage from at least a part of the first conveying passage to the connection position and the second conveying passage is opened to the connection position when the flap is located at the first position, wherein the flap moves to a second position as the flap contacts the sheet conveyed through the first conveying passage, the first conveying passage being opened toward the connection position and at least a part of the second conveying passage is blocked with respect to the connection position, and wherein a guide surface constituting an upper surface of the first curved passage is located at a position closer to the third guide member than the guide roller does when the flap is located at the second position.