Printer Voltage Negotiation to Prevent Drop
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Solution Overview
Problem
Multi-function printers face issues with voltage drops during printing, leading to deteriorated print quality due to high current consumption, and existing solutions struggle to manage power distribution effectively between the printer and other connected devices.
Innovation Solution
A printing apparatus equipped with a controller that detects voltage drops and adjusts the power supply by selecting an appropriate voltage profile from an external power source, ensuring stable power delivery while minimizing impact on other connected devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the printing head is energized with high current to perform printing, then printing function is achieved, but voltage drop occurs leading to deteriorated print quality
Solution Approach 1:
The controller performs preliminary negotiation with the power supply device before printing to determine the suppliable electric power. The CPU obtains a profile indicating the suppliable electric power from the power supply device, and decides the power supply voltage in advance based on this information, preventing voltage drop during actual printing operations.
Solution Approach 2:
The system implements feedback by continuously monitoring the power supply capabilities and adjusting the printing operations accordingly. The CPU performs negotiation with the power supply device to obtain real-time information about suppliable electric power, and modifies printing parameters based on the available power to maintain print quality.
2Power
If the printer consumes high power during printing, then printing performance is improved, but power distribution to other connected devices is affected
Solution Approach 1:
The system dynamically adjusts power consumption based on real-time negotiation with the power supply device. The CPU obtains profile information indicating suppliable electric power and dynamically decides the appropriate power supply voltage, allowing the printer to adapt its power consumption to the available power while maintaining printing functionality.
Solution Approach 2:
The controller changes operating parameters by selecting different power supply voltages based on the negotiation results with the power supply device. The CPU decides the power supply voltage from multiple possible values according to the suppliable electric power indicated by the profile, optimizing power distribution across all connected devices.
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 solution ensures stable and appropriate power supply to the printing apparatus, maintaining print quality and optimizing power distribution, thus addressing voltage drop issues and ensuring efficient operation.
Implementation Method 1
a resistor having an electric resistivity based on the printing head... in a case the resistor is energized with the electric power supplied from the external power supply
Data Source
AI summary
A printing apparatus connectable to an external power supply having outputtable voltage information, including: a printing head performing printing by electric power supplied from the external power supply; a resistor having an electric resistivity based on the printing head; a detector detecting a substantial voltage; and a controller configured to: obtain the voltage information from the external power supply; decide a tentative voltage; request the external power supply to output the tentative voltage; energize the resistor with the tentative voltage; decide the substantial voltage if a voltage corresponding to each of the obtained voltage information is supplied based on a result of the detector during the energizing of the resistor; decide an electric power supply voltage based on the substantial voltage; and request the external power supply to output the electric power supply voltage.