Image forming apparatus
By controlling the rotation of heating and pressurizing rotating bodies post-discharge roller stop, the apparatus addresses durability issues in the fixing unit, maintaining operational efficiency and reducing thermal stress.
JP7868489B2Active Publication Date: 2026-06-02BROTHER KOGYO KK
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- BROTHER KOGYO KK
- Filing Date
- 2022-11-28
- Publication Date
- 2026-06-02
AI Technical Summary
Technical Problem
The durability of the fixing unit in image forming apparatuses is compromised due to localized heating when the discharge roller stops, causing the nip portion between the pair of rollers to heat up.
Method used
The image forming apparatus controls the rotation of the heating and pressurizing rotating bodies after the discharge roller stops, continuing to cut the sheet with the cutter, thereby preventing localized temperature increases.
Benefits of technology
This approach suppresses the decrease in durability of the fixing unit by maintaining the rotation of the heating and pressurizing rotating bodies after the discharge roller stops, ensuring continuous operation and reducing thermal stress.
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Smart Images
Figure 0007868489000002 
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Abstract
To provide an image forming apparatus that, when cutting a sheet with a cutter, can prevent a reduction in the durability of a fixing unit.SOLUTION: A control unit (101) rotates a heating rotating body (51) or a pressure rotating body (52) to convey a sheet, rotates ejection rollers (36, 37) to convey the sheet having passed through a nip part (N), stops the ejection rollers when a cut position of the sheet reaches an arrangement position (B) of a cutter, and starts cutting the sheet with the cutter (10) in a state where the control unit rotates the heating rotating body or the pressure rotating body after stopping the ejection roller.SELECTED DRAWING: Figure 1
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