US 2026/0064059 A1Published application

Image forming apparatus

AssigneeCanon Kabushiki Kaisha

InventorsTadashi Fukumuro, Kosuke Ogino, Yuki Sugiyama, Yuichi Ogawa

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Abstract

An image forming apparatus includes an accommodating unit, a feeding unit, an image forming unit, a transferring unit, a fixing unit, a reverse conveyance unit, a re-conveyance unit, first path, a second path, one drive source, a detection unit, and a control unit. The drive source drives a rotary member in the fixing unit and the reverse conveyance unit. The detection unit detects a recording material passing through the second path. The control unit controls the drive source such that the reverse conveyance unit changes a conveyance speed for conveying a second recording material to be conveyed on the second path following a first recording material in a second direction between a first conveyance speed and a second conveyance speed faster than the first conveyance speed based on a detection result of the detection unit that has detected the first recording material passing through the second path.

Claims20

Dependent claims

An image forming apparatus comprising:

an accommodating unit configured to accommodate a recording material;
a feeding unit configured to feed the recording material accommodated in the accommodating unit;
an image forming unit configured to form a toner image;
a transferring unit configured to transfer the toner image formed by the image forming unit to the recording material fed by the feeding unit;
a fixing unit including a rotary member that heats the toner image transferred to the recording material and configured to fix the toner image to the recording material;
a reverse conveyance unit configured to perform reverse conveyance for conveying the recording material to which the toner image is fixed by the fixing unit in a first direction and then conveying the recording material in a second direction opposite to the first direction;
a re-conveyance unit configured to again convey the recording material subjected to the reverse conveyance to the transferring unit;
a first path forming a path on which the recording material is conveyed from the feeding unit to the transferring unit;
a second path forming a path from a point at which the recording material is conveyed in the second direction by the reverse conveyance unit to a point at which the recording material joins the first path;
one drive source configured to drive the rotary member and the reverse conveyance unit;
a detection unit configured to detect the recording material passing through the second path;
and
a control unit configured to control the drive source such that the reverse conveyance unit changes a conveyance speed for conveying a second recording material to be conveyed on the second path following a first recording material in the second direction between a first conveyance speed and a second conveyance speed faster than the first conveyance speed based on a detection result of the detection unit that has detected the first recording material passing through the second path.

10 more elements

An image forming apparatus comprising:

an accommodating unit configured to accommodate a recording material;
a feeding unit configured to feed the recording material accommodated in the accommodating unit;
an image forming unit configured to form a toner image;
a transferring unit configured to transfer the toner image formed by the image forming unit to the recording material fed by the feeding unit;
a fixing unit including a rotary member that heats the toner image transferred to the recording material and configured to fix the toner image to the recording material;
a reverse conveyance unit configured to perform reverse conveyance for conveying the recording material to which the toner image is fixed by the fixing unit in a first direction and then conveying the recording material in a second direction opposite to the first direction;
a re-conveyance unit configured to again convey the recording material subjected to the reverse conveyance to the transferring unit;
a first path forming a path on which the recording material is conveyed from the feeding unit to the transferring unit;
a second path forming a path from a point at which the recording material is conveyed in the second direction by the reverse conveyance unit to a point at which the recording material joins the first path;
one drive source configured to drive the rotary member and the reverse conveyance unit;
a detection unit configured to detect the recording material passing through the second path;
and
a control unit configured to control the drive source such that the reverse conveyance unit changes a number of times of reversal in which a conveyance direction of a second recording material conveyed following a first recording material is switched by the reverse conveyance unit between the first direction and the second direction between a first number and a second number smaller than the first number based on a detection result of the detection unit that has detected the first recording material passing through the second path.

10 more elements

Dependencies are inferred from the claim text.