Image Forming Apparatus Controller Mode Adaptation
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Solution Overview
Problem
Existing image forming apparatuses employing the electrophotographic method lack optimal print preparation operation control, particularly when switching between full color and monochromatic modes, leading to unnecessary operations and inefficiencies due to a lack of adaptation based on the color mode setting and component availability.
Innovation Solution
An image forming apparatus with a controller that adjusts the print preparation operation based on the color mode setting and the operational state of the image forming stations, allowing for restricted operations when necessary, such as switching to monochromatic mode when full color mode components fail or are depleted, to prevent unnecessary preparations and optimize resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If print preparation operation is performed in full color mode when only monochromatic printing is available, then unnecessary operations are executed, but the system continues to operate in restricted mode
Solution Approach 1:
The system dynamically adjusts the print preparation operation based on the current operational state. When color toner is depleted or color image forming is restricted, the controller automatically switches from full color mode preparation to monochromatic mode preparation, making the system adaptable to changing conditions and avoiding unnecessary operations
Solution Approach 2:
The controller changes the operational parameters of the print preparation operation according to the available resources. When color toner quantity falls below a threshold or color forming is restricted, the system modifies the preparation parameters to match the restricted monochromatic operation, ensuring optimal performance under current constraints
2Loss of time
If scanner motor rotation is started before print instruction, then printing can start without standby time, but the scanner motor requires longer stabilization time compared to other motors
Solution Approach 1:
The scanner motor rotation is started in advance before the print instruction is received. This preliminary action ensures that when printing is initiated, the scanner motor is already rotating and stabilizing, eliminating standby time and enabling immediate print output
3Productivity
If print preparation operation control is not switched according to color mode setting, then the control system is simple, but the print preparation operation is not optimum
Solution Approach 1:
The print preparation operation control is made dynamic by switching between full color mode and monochromatic mode based on color mode settings and component availability. This dynamic adjustment optimizes preparation operations for each mode while maintaining manageable control system complexity through state-based decision logic
4Ease of operation
If full color mode preparation is performed when color toner is used up, then the system operates in restricted mode, but unnecessary print preparation operations are caused
Solution Approach 1:
The controller continuously monitors the quantity of color toner and the operational status of color image forming stations. When color toner falls below a threshold or color forming becomes restricted, the system receives feedback and automatically adjusts the print preparation operation from full color mode to monochromatic mode, preventing unnecessary operations and maintaining optimal efficiency
Data Source
AI summary
An image forming apparatus includes: an image forming unit configured to perform image formation in a first mode, in which image formation is performed by a plurality of image forming stations, or a second mode, in which image formation is performed by a predetermined image forming station among the plurality of image forming stations; and a controller configured to: control the image forming unit to perform a preparation operation in accordance with color mode information; set a restricted operation state in which the controller prohibits the image formation in the first mode and permits the image formation in the second mode when any one image forming station, except for the predetermined image forming station, is incapable of performing image formation; and prevent the image forming unit from performing the preparation operation when the first mode is set as the color mode information and the restricted operation state is set.