Transfer Device Power Supply for Embossed Paper Toner Scattering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current image forming apparatuses face challenges in efficiently transferring toner images onto various paper types, particularly embossed paper, due to issues with toner adhesion and scattering, leading to reduced transfer efficiency and image quality.
Innovation Solution
The use of a transfer device with a power supply system that includes both direct-current and alternating-current voltages for the first-transfer rollers and counter rollers, allowing for selective operation modes based on paper type, which optimizes toner transfer by adjusting voltage waveforms and frequencies to manage toner adhesion and scattering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If only direct-current voltage is applied to transfer rollers, then power consumption is reduced and simple paper transfer is achieved, but toner scattering occurs on embossed paper and transfer efficiency decreases
Solution Approach 1:
The patent applies dynamic voltage switching by changing the voltage waveform from direct-current to alternating-current based on the detected paper type. This dynamic adaptation allows the transfer roller to optimize toner transfer for different paper surfaces, preventing toner scattering on embossed paper while maintaining energy efficiency for simple paper.
Solution Approach 2:
The patent changes the voltage parameter from direct-current to alternating-current with specific frequency and amplitude characteristics tailored to different paper types. This parameter modification enables effective toner transfer on embossed paper by using alternating voltage to prevent toner scattering while maintaining reasonable power consumption.
2Reliability
If alternating-current voltage is continuously applied to transfer rollers, then toner transfer on embossed paper is improved, but power consumption increases
Solution Approach 1:
The system dynamically switches between direct-current and alternating-current voltage modes based on real-time paper type detection. Alternating-current voltage is applied only when embossed paper is detected, while direct-current voltage is used for simple paper, thereby optimizing transfer efficiency only when necessary and reducing overall power consumption.
Solution Approach 2:
The patent implements periodic voltage application by using alternating-current voltage with specific frequency characteristics only when needed for embossed paper transfer. This periodic action pattern allows toner to be effectively transferred to embossed surfaces while avoiding continuous high power consumption.
3Reliability
If voltage is increased to improve toner adhesion on embossed paper, then transfer efficiency improves, but toner scattering increases
Solution Approach 1:
The patent changes the voltage waveform parameter from direct-current to alternating-current with optimized frequency and amplitude settings. This parameter change allows the electric field to dynamically interact with toner particles, improving adhesion to embossed surfaces while the alternating nature prevents excessive charge buildup that would cause scattering.
Solution Approach 2:
The alternating-current voltage creates a vibratory electric field effect on toner particles during the transfer process. This vibration-like action helps toner particles conform to the embossed surface topology, improving contact and adhesion while preventing the static charge accumulation that leads to scattering.
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 approach enhances the second-transfer efficiency and reduces toner scattering on embossed paper, improving image quality and reducing energy consumption while maintaining high transfer efficiency.
Implementation Method 1
a first-transfer power supply that includes a direct-current power supply and an alternating-current power supply, and a first-transfer member that transfers a toner image formed on an outer peripheral surface of an image carrier to a receiving member from which the toner image is transferred to a medium. The first-transfer member transfers the toner image by receiving a voltage from the first-transfer power supply.
Data Source
AI summary
A transfer device includes a first-transfer power supply that includes a direct-current power supply and an alternating-current power supply, and a first-transfer member that transfers a toner image formed on an outer peripheral surface of an image carrier to a receiving member from which the toner image is transferred to a medium. The first-transfer member transfers the toner image by receiving a voltage from the first-transfer power supply.