Sheet Laminator Fuser Control for Heat-Induced Roller Deformation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Image forming apparatuses with sheet lamination modes face issues of fixing roller pair deformation due to heat concentration in the nip region during abnormal conditions, leading to prolonged stopping processes and increased waiting times before job restart.
Innovation Solution
A sheet laminator with a fuser pressure member, heater, and driver, which includes circuitry to manage power supply to the heater based on the fuser pressure member's state, allowing immediate stop or controlled rotation to prevent damage and reduce downtime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fixing roller pair is rotated for a certain period of time to radiate heat after abnormal condition handling, then the deformation of the fixing roller pair in the nip region can be prevented, but the period of the stopping process becomes unnecessarily long and the waiting time before restarting the job becomes long
Solution Approach 1:
The control unit changes the rotation speed parameter of the fixing roller pair based on the detected temperature. When the temperature is high, the roller rotates at a higher speed to radiate heat more efficiently. When the temperature is lower, the rotation speed is reduced, allowing for quicker stopping without compromising heat dissipation effectiveness.
Solution Approach 2:
The control unit continuously monitors the temperature of the fixing roller pair through temperature detection and adjusts the rotation speed accordingly. This feedback mechanism ensures that the roller rotates long enough to prevent deformation while minimizing the stopping time by reducing rotation speed when temperature decreases.
2Object-affected harmful factors
If the power to the heater is immediately turned off when abnormal condition occurs, then heat concentration damage can be prevented, but the fixing roller pair must be rotated for a certain period to radiate heat which extends the stopping process
Solution Approach 1:
The system dynamically adjusts the rotation speed of the fixing roller pair based on real-time temperature feedback. The control unit increases rotation speed when temperature is high to enhance heat dissipation, and reduces rotation speed when temperature decreases, creating an adaptive stopping process that balances damage prevention with time efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents fixing roller pair damage and reduces unnecessary waiting times by optimizing the handling of abnormal conditions, enhancing operational efficiency and convenience.
Implementation Method 1
The heater heats the fuser pressure member
Implementation Method 2
The fuser pressure member thermally fixes a two-ply sheet and a sheet medium inserted between two sheets of the two-ply sheet
Implementation Method 3
The fuser pressure member thermally fixes a two-ply sheet and a sheet medium inserted between two sheets of the two-ply sheet
Data Source
AI summary
A sheet laminator includes a fuser pressure member, a heater, a drive device, and circuitry. The fuser pressure member thermally fixes a two-ply sheet and a sheet medium inserted between two sheets of the two-ply sheet. The heater heats the fuser pressure member. The driver rotates the fuser pressure member. In response to a pause of a rotation of the fuser pressure member, the circuitry turns off a power supply to the heater, and perform one of immediately stopping the fuser pressure member or rotating the fuser pressure member and stopping the fuser pressure member after the rotation of the fuser pressure member, based on a state of the fuser pressure member.