Inkjet Nozzle Cleaning Algorithm Reduces Ink Waste
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Solution Overview
Problem
Conventional inkjet recording devices waste ink due to frequent preliminary firing for nozzle cleaning, as they lack user notification and efficient ink usage strategies, leading to accidental elimination of printing cycles and increased ink consumption.
Innovation Solution
An inkjet recording device that calculates and notifies users of scheduled nozzle-cleaning operations, allowing for reduced frequency of preliminary firing by prompting users to perform printing operations before the scheduled cleaning time, thereby minimizing ink waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If preliminary firing is performed frequently for nozzle cleaning, then nozzle reliability is improved, but ink consumption increases
Solution Approach 1:
The system performs preliminary firing operations in advance to clear nozzles before actual printing, preventing nozzle clogging during printing. By proactively maintaining nozzle cleanliness, the system reduces the frequency of corrective cleaning operations and minimizes ink waste while ensuring reliable printing performance.
Solution Approach 2:
The system monitors printing conditions, ink viscosity changes, and nozzle performance to dynamically adjust the timing and frequency of preliminary firing operations. This feedback mechanism ensures cleaning is performed only when necessary, optimizing the balance between nozzle reliability and ink consumption.
2Ease of operation
If preliminary firing is performed at fixed intervals, then nozzle maintenance is simplified, but printing productivity is reduced
Solution Approach 1:
The system transitions from static fixed-interval cleaning to dynamic condition-based cleaning scheduling. The preliminary firing timing is adjusted based on real-time monitoring of ink viscosity, printing volume, and nozzle performance, allowing the system to maintain simplicity while adapting to actual printing needs to preserve productivity.
Solution Approach 2:
The system changes the parameter of cleaning frequency from a fixed constant to a variable determined by printing conditions and ink properties. This allows the cleaning schedule to be optimized for each specific operating scenario, maintaining ease of operation while maximizing printing productivity.
3Reliability
If ink viscosity increases due to evaporation, then inkjet nozzle clogging risk increases, but more frequent preliminary firing increases ink waste
Solution Approach 1:
The system monitors ink viscosity changes and printing conditions to determine when preliminary firing is necessary. By using feedback from viscosity monitoring and printing pattern analysis, the system performs cleaning only when clogging risk actually exists, preventing both nozzle clogging and unnecessary ink waste.
Solution Approach 2:
The system adjusts the cleaning frequency parameter based on ink viscosity changes and environmental conditions. When viscosity increases indicate higher clogging risk, cleaning frequency increases; when conditions are favorable, frequency decreases, optimizing the balance between clogging prevention and ink conservation.
Data Source
AI summary
An algorithm for preliminary firing of ink droplets through inkjet nozzles prior to inkjet printing operation is disclosed. According to this algorithm, a calculation is made of a scheduled time of a next nozzle-cleaning operation which succeeds a time instant at which a last firing operation was implemented, by a predetermined reference-time-interval, and an operation is performed concerning a reduction in a frequency at which the nozzle-cleaning operation is repeated, by monitoring the calculated scheduled-time of nozzle-cleaning operation, on a time-line basis.