Intermediate Transfer Unit Resistor Branches for Transfer Reliability
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Solution Overview
Problem
Conventional intermediate transfer units experience transfer failures due to inadequate control of primary transfer currents, leading to inefficiencies in image formation.
Innovation Solution
The intermediate transfer unit incorporates a high-voltage resistor unit with multiple resistors of varying resistance values to manage primary transfer currents, ensuring optimal voltage application to each primary transfer member, thereby stabilizing the transfer process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional power supply line with uniform resistance is used, then the structure is simple, but transfer failures occur due to inadequate control of primary transfer currents
Solution Approach 1:
The power supply line is segmented into multiple branches, each serving a specific primary transfer member. Each branch includes individually selectable resistors that can be configured to provide optimal resistance values for each transfer position, enabling precise control of primary transfer currents while maintaining system reliability
Solution Approach 2:
Different resistance values are assigned to different branches of the power supply line based on the specific requirements of each primary transfer member. This local customization of electrical properties allows each transfer position to operate at optimal current levels, preventing transfer failures without requiring complete system redesign
2Productivity
If fixed resistance values are used in the power supply line, then the structure is simple, but transfer efficiency decreases due to inability to optimize currents for different positions
Solution Approach 1:
The resistor configuration in each branch can be dynamically adjusted or selected during system setup or operation. Multiple resistors with different resistance values are provided in each branch, allowing the system to adapt to varying transfer requirements at different positions, thereby optimizing image formation efficiency across all primary transfer members
Solution Approach 2:
The resistance parameter in each branch is made variable through the provision of multiple resistors with different values. By changing the resistance parameter in each branch according to the specific needs of each primary transfer member, the system achieves optimized current distribution and improved overall productivity
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
This configuration reduces transfer failures by adjusting primary transfer currents, enhancing the reliability and efficiency of image formation in the image forming apparatus.
Implementation Method 1
The power supply line and each of the primary transfer members are connected via a high-voltage resistor unit that includes a plurality of resistors having different resistance values
Data Source
AI summary
An intermediate transfer unit includes a seamless intermediate transfer belt, a plurality of primary transfer members and a power supply line. On the intermediate transfer belt, toner images formed on a plurality of image carrying members are sequentially stacked. The primary transfer members are respectively arranged opposite the image carrying members via the intermediate transfer belt, and transfer the toner images formed on the image carrying members onto the intermediate transfer belt. The power supply line branches to at least two or more locations from a transfer voltage power supply which applies a primary transfer voltage to each of the primary transfer members to cause a primary transfer current to flow to each of the primary transfer members. The power supply line and each of the primary transfer members are connected via a high-voltage resistor unit that includes a plurality of resistors having different resistance values.