Transfer Device DC AC Voltage for Metallic Gloss
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Solution Overview
Problem
Existing transfer devices using only DC voltage struggle to achieve irregular orientation of flat pigment particles, limiting the brilliance and metallic gloss of images formed with toner containing these particles.
Innovation Solution
A transfer device that applies both DC and AC voltages to the transfer portion, allowing for the irregular orientation of flat pigment particles, enhancing image brilliance and metallic gloss by vibrating the particles between the transfer belt and the sheet, thereby randomizing their reflection surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If only DC voltage is applied to the transfer portion, then the transfer process is simple and stable, but the orientation of flat pigment particles becomes regular, reducing image brilliance and metallic gloss
Solution Approach 1:
The patent combines DC voltage and AC voltage application systems into a single transfer portion. The DC voltage provides stable transfer functionality while the AC voltage component introduces particle vibration to achieve irregular orientation of flat pigment particles, thereby enhancing image brilliance and metallic gloss without sacrificing transfer stability
Solution Approach 2:
The patent introduces an AC voltage component to the traditionally static DC voltage system, creating a dynamic voltage application system. This dynamic voltage causes the flat pigment particles to vibrate during transfer, randomizing their orientation and producing irregular reflections that enhance image brilliance and metallic gloss effects
2Illumination intensity
If AC voltage is added to the transfer portion, then irregular orientation of flat pigment particles is achieved, but the voltage application system becomes more complex
Solution Approach 1:
The patent merges the AC voltage application with the existing DC voltage system, using a single transfer portion equipped with both voltage application capabilities. This integrated approach achieves irregular particle orientation for enhanced diffused reflection light while avoiding the need for completely separate voltage application systems
Solution Approach 2:
The patent changes the electrical parameters applied to the transfer portion by introducing an AC voltage component with specific frequency and amplitude characteristics. This parameter modification causes controlled vibration of flat pigment particles during transfer, achieving irregular orientation that enhances diffused reflection light without requiring fundamental system redesign
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 use of combined DC and AC voltages ensures increased diffused reflection light for brilliance and regularized orientation for enhanced metallic gloss, allowing for switching between modes to optimize image appearance.
Implementation Method 1
a DC voltage applying portion that applies a DC voltage to the transfer portion
Implementation Method 2
an AC voltage applying portion that applies an AC voltage to the transfer portion... makes the orientation of flat pigment particles irregular... by vibrating the particles between the transfer belt and the sheet
Data Source
AI summary
A transfer device includes a transfer portion that transfers a toner image formed with a toner containing flat pigment particles to a recording medium; a DC voltage applying portion that applies a DC voltage to the transfer portion; and an AC voltage applying portion that applies an AC voltage to the transfer portion.