Adaptive TRC Cycle-Up Criteria for Xerographic Printers
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Solution Overview
Problem
Static TRC cycle-up criteria in xerographic marking devices lead to unnecessary delays or premature initiation of print jobs due to noise level estimates, affecting system performance and print quality stability.
Innovation Solution
A method and system that adjust TRC cycle-up criteria based on current noise level estimates, using a controller to compare sensor readings with target values and adjust criteria dynamically, allowing for optimal print job initiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If static TRC cycle-up criteria are used, then system performance and print quality stability can be maintained, but unnecessary delays or premature initiation of print jobs occur due to noise level estimates
Solution Approach 1:
The patent applies dynamics by transitioning from static TRC cycle-up criteria to dynamic criteria that automatically adjust based on real-time noise level estimates. The system continuously monitors noise levels and modifies the cycle-up convergence criteria accordingly, allowing the thresholds to adapt to changing operational conditions rather than remaining fixed throughout the printing process.
Solution Approach 2:
The patent implements parameter changes by modifying the TRC cycle-up criteria values based on measured noise levels. When noise levels are high, the criteria are relaxed to prevent unnecessary delays; when noise levels are low, the criteria are tightened to ensure print quality. This dynamic parameter adjustment resolves the contradiction between maintaining reliability and reducing time loss.
2Reliability
If tight TRC cycle-up criteria are used, then print quality stability is improved, but component and material life is reduced due to unnecessary cycling
Solution Approach 1:
The patent changes the TRC cycle-up criteria parameters dynamically based on noise level measurements. When noise levels indicate unstable conditions, the system relaxes the criteria to reduce unnecessary cycling and extend component life. When conditions are stable, the system tightens the criteria to maintain print quality, thus resolving the contradiction between quality stability and component durability.
Solution Approach 2:
The patent employs feedback mechanisms where noise level measurements continuously inform the adjustment of TRC cycle-up criteria. This closed-loop feedback allows the system to learn from operational conditions and adjust thresholds accordingly, preventing unnecessary cycling that would degrade components while maintaining print quality when conditions permit.
3Loss of time
If loose TRC cycle-up criteria are used, then user wait time is reduced, but print quality stability is compromised
Solution Approach 1:
The patent dynamically adjusts TRC cycle-up criteria based on real-time noise level estimates. When noise levels are low and system conditions are stable, the criteria are tightened to ensure print quality. When noise levels are high and conditions are unstable, the criteria are relaxed to reduce wait time, thus resolving the contradiction between time loss and quality stability through adaptive parameter changes.
Solution Approach 2:
The patent applies dynamics by making TRC cycle-up criteria flexible rather than fixed. The system continuously adapts the convergence thresholds based on operational noise levels, allowing the criteria to be tight when conditions permit for quality stability, and loose when conditions require for reduced wait time, thus resolving the contradiction dynamically.
Data Source
AI summary
A method of adjusting cycle-up criteria of a device based on estimated noise levels, including obtaining a current estimated noise level, adjusting the cycle-up criteria according to the estimated noise level, comparing at least one signal, from which the noise level is estimated, with at least one target value, calculating the difference between the signal and the at least one target value, calculating the calculated difference between the signal and the at least one target value with the adjusted cycle-up criteria; and initiating a print job if the calculated difference falls within the adjusted cycle-up criteria.