Toner Cartridge Sensor Phase Correction
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Solution Overview
Problem
Printing devices inaccurately track toner levels in replacement cartridges with varying initial volumes, leading to erroneous reporting and unnecessary replacements or service calls.
Innovation Solution
An electronic device with a communication, memory, and processing element that determines the toner level by identifying sequential phases of usage and applying corresponding equations to correct the toner volume, accounting for differences between original and replacement cartridges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the printing device assumes a fixed initial toner volume for replacement cartridges, then the device complexity is reduced, but the measurement precision of toner level reporting deteriorates
Solution Approach 1:
The patent changes the parameter of initial toner volume from a fixed assumed value to a variable that can be detected and reported by the replacement cartridge itself. The cartridge includes a sensor that detects when toner reaches a threshold level (e.g., 10%) and communicates this information to the printing device, allowing accurate tracking regardless of the actual initial volume.
Solution Approach 2:
The invention implements a feedback mechanism where the replacement cartridge actively reports toner level information back to the printing device. The sensor system in the cartridge provides feedback about the actual toner volume, enabling the device to adjust its tracking and reporting accordingly, rather than relying on fixed assumptions.
2Ease of operation
If the printing device uses estimation based on usage tracking, then the ease of operation is improved, but the reliability of toner level reporting deteriorates when initial volumes vary
Solution Approach 1:
The replacement cartridge performs self-service by including its own sensor system that autonomously detects and reports toner level information to the printing device. This eliminates the need for the device to estimate based on usage patterns, providing reliable data directly from the cartridge itself.
3Measurement precision
If the toner cartridge includes a sensor system to detect toner level, then the measurement precision is improved, but the device complexity of the toner cartridge increases
Solution Approach 1:
The patent uses a simplified sensor system in the replacement cartridge that copies or replicates the essential functionality of the original cartridge's sensor. Rather than requiring a complete sensor suite, the replacement cartridge includes a basic sensor that detects when toner reaches a predetermined threshold level and communicates this information to the device.
Data Source
AI summary
An electronic device for determining a level of toner volume in a replacement toner cartridge used in a printing device comprises a communication element, a memory element, and a processing element. The communication element transmits a request to the printing device to provide data regarding the replacement toner cartridge and receives the data. The data includes a current level of toner volume and a current printed page count. The memory element stores the data received from the printing device. The processing element is in communication with the communication element and the memory element. The processing element is configured to determine one of a plurality of sequential phases of a usage cycle of the replacement toner cartridge corresponding to a value of the current level of toner volume and determine a corrected level of toner volume using one of a plurality of equations selected according to the phase.