Transfer Voltage Setting Mode for Image Forming Apparatus
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Solution Overview
Problem
Existing image forming apparatuses require cumbersome user interaction to recall and reuse previous settings for transfer voltage adjustments, making it difficult to efficiently set optimal transfer voltages for different sheet types and conditions.
Innovation Solution
An image forming apparatus with a controller that outputs a test chart with multiple test images transferred using various voltages, allowing users to easily set and adjust secondary transfer voltages based on previous settings, using a preset voltage value and a user-friendly operation portion to select the appropriate voltage for different sheet types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transfer voltage setting mode is executed to adjust transfer voltage, then the transferability of patch images can be optimized, but the user operation becomes troublesome when trying to recall and reuse previous settings
Solution Approach 1:
The controller automatically recalls and presets the voltage value from the previous mode execution as the reference voltage for the current patch image formation. This preliminary action eliminates the need for users to manually recall previous settings, making the operation straightforward while maintaining reliable transferability optimization
Solution Approach 2:
The system copies the voltage value setting from the previous mode execution and uses it as the reference for the current patch image formation. This copying mechanism allows users to reuse proven settings without manual intervention, improving ease of operation while preserving the reliability of optimized transfer voltage values
2Reliability
If the transfer voltage is adjusted through multiple patch image formations, then the optimal transfer voltage can be found, but the process becomes time-consuming when starting from initial settings
Solution Approach 1:
By automatically recalling and presetting the voltage value from previous executions before forming patch images, the system performs preliminary optimization work. This reduces the time required to find optimal transfer voltage by starting from an already optimized reference point rather than beginning with initial settings
Solution Approach 2:
The system uses feedback from previous mode executions by recalling the voltage value that produced good transfer results and using it as the reference for subsequent patch image formations. This feedback mechanism accelerates the optimization process by building upon previously successful settings rather than starting from scratch
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
Enables easy and efficient adjustment of secondary transfer voltage settings, improving usability by allowing users to quickly find optimal transfer voltages without repeating the entire setting process, even when environmental conditions change, thus enhancing the reliability and speed of image formation.
Implementation Method 1
a transfer member configured to transfer a toner image carried on the image bearing member to a sheet by being applied with a voltage
Data Source
AI summary
An image forming apparatus includes an image bearing member; a transfer member configured to transfer a toner image carried on the image bearing member to a sheet by being applied with a voltage; a controller configured to execute a mode of outputting a test chart for setting a voltage to be applied to the transfer member during image formation, the mode being a mode of transferring a plurality of test images to the test chart by applying a plurality of different voltages to the transfer member; and an operation portion capable of setting a type of a sheet on which the mode is executed. The controller is configured to preset a voltage value for setting a voltage to be applied when the test images are transferred in execution of the mode based on a voltage value, which is set in the previous execution of the mode.