Fabric Pretreatment Freshness Estimation for Rubbing Fastness
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Solution Overview
Problem
Pretreatment liquids used in fabric printing can deteriorate over time, leading to inconsistent rubbing fastness and requiring users to replace them frequently, which is inconvenient.
Innovation Solution
A printing system with a pretreatment unit, storage unit, and control unit that estimates the freshness of pretreatment liquids based on elapsed time since manufacture and use date, using a data table to predict the rubbing fastness, ensuring optimal application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pretreatment liquid is used after prolonged storage, then storage cost is reduced, but rubbing fastness deteriorates
Solution Approach 1:
The system performs preliminary estimation of rubbing fastness based on storage time before actual printing occurs. The control unit calculates expected rubbing fastness using stored data about the relationship between storage time and rubbing fastness, allowing users to plan ahead and avoid problematic printing operations before they happen.
Solution Approach 2:
The system establishes a feedback loop where rubbing fastness data is continuously measured and fed back to the control unit. This feedback is used to update the stored data and refine the estimation algorithm, creating a self-improving system that becomes more accurate over time in predicting when pretreatment liquid needs replacement.
2Reliability
If pretreatment liquid is replaced frequently, then rubbing fastness is maintained, but operation convenience deteriorates
Solution Approach 1:
The system performs self-monitoring and self-assessment of pretreatment liquid quality. The control unit automatically tracks storage time, calculates expected rubbing fastness, and provides recommendations without requiring manual testing or user judgment, making the system maintain itself with minimal user intervention.
Solution Approach 2:
The patent replaces manual rubbing fastness testing and subjective judgment with an automated calculation system. The control unit uses stored data and algorithms to objectively determine pretreatment liquid quality, eliminating the need for users to perform physical tests or make subjective decisions about when to replace the liquid.
3Productivity
If storage time of pretreatment liquid is extended, then replacement cost is reduced, but manufacturing precision deteriorates
Solution Approach 1:
The system dynamically adjusts printing parameters based on the actual rubbing fastness estimation. Rather than using a fixed replacement schedule, the control unit continuously evaluates the current state of the pretreatment liquid and adapts printing conditions or replacement timing to maintain optimal performance throughout the extended storage period.
Data Source
AI summary
A printing system includes a pretreatment unit that applies a pretreatment liquid to a fabric, a printing unit that ejects a printing liquid to the fabric to which the pretreatment liquid was applied, a storage unit that stores a data table indicating a correspondence relationship between a time elapsed from manufacture of the pretreatment liquid and a rubbing fastness of the fabric on which the pretreatment liquid was used, and a control unit. The control unit includes an acquisition unit that acquires freshness information regarding freshness of the pretreatment liquid to be applied by the pretreatment unit and use date information indicating a time to use the pretreatment liquid, and an estimation unit that outputs, based on the freshness information, the use date information, and the data table, an estimation level of the rubbing fastness to be obtained by using the pretreatment liquid at the time indicated by the use date information.