Remanufactured Cartridge Usage Offset for Accurate Remaining Ink Display
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Solution Overview
Problem
Printers struggle to accurately determine the remaining usage of remanufactured printing material cartridges due to a lack of information about the refilled material, leading to inaccurate displays and a perceived lack of eco-friendliness.
Innovation Solution
Implementing an integrated circuit chip in the cartridge with a usage offset and security measures, such as a signature and new usage capacity, to accurately track and display the remaining usage of remanufactured cartridges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If a printing material cartridge is remanufactured and refilled, then the cartridge can be reused to reduce waste, but the printer cannot accurately determine the remaining usage of the refilled material
Solution Approach 1:
The remanufacturer performs preliminary actions by resetting the usage counter to a predetermined value (representing the expected usage of refilled material) and setting the usage offset to reflect the historical usage before refilling. This preliminary configuration enables the printer to later calculate accurate remaining usage information without requiring continuous monitoring of the refilled material consumption.
Solution Approach 2:
The system implements feedback by using the usage offset (which captures historical usage information) in conjunction with the current usage counter to calculate and display accurate remaining usage. The printer feeds back the calculated remaining usage information to the user, resolving the information loss problem while maintaining the eco-friendly remanufacturing process.
2Device complexity
If the printer displays inaccurate remaining usage for remanufactured cartridges, then the system complexity is reduced, but user convenience and perceived eco-friendliness deteriorate
Solution Approach 1:
The usage offset acts as an intermediary element that bridges the gap between the simplified tracking system and the need for accurate remaining usage display. By introducing this intermediate parameter that captures historical usage information, the system achieves accurate remaining usage calculation without requiring complex continuous monitoring of refilled material consumption.
3Device complexity
If the cartridge chip tracks only current usage, then the device complexity is minimized, but the ability to determine remaining usage after remanufacturing is lost
Solution Approach 1:
The chip performs preliminary action by storing the usage offset (historical usage information) and predetermined usage values before remanufacturing. This preliminary storage enables the chip to later calculate accurate remaining usage by combining the offset with current usage data, achieving measurement precision without requiring complex continuous tracking mechanisms.
Data Source
AI summary
An example printing material cartridge may include an input/output device, a container storing printing material, and a memory. The memory may store an identifier of the cartridge, a usage counter of the cartridge, and an indicator that the cartridge has reached a usage threshold. The memory may also store a usage offset equal to a historical usage of the cartridge, the usage offset for determining a new remaining usage of the cartridge.