Persistent Marking of Flexo Plates Using Machine-Readable Indicia
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Solution Overview
Problem
Current flexographic printing plate workflows face inefficiencies due to incomplete and lost information during processing, leading to operator mistakes, time loss, and financial losses, as prior art markings are limited and often removed during processing, requiring manual re-entry of parameters on different equipment.
Innovation Solution
A system that embeds machine-readable indicia, such as 2D codes or RFID tags, on flexo plates with information including plate identifiers and variable operating parameters, allowing for persistent readability across processing steps, enabling automated control and tracking of plate workflows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If prior art marking methods are used on flexo plates, then plate identification is possible, but information is incomplete and lost during processing, requiring manual re-entry of parameters
Solution Approach 1:
The system embeds machine-readable indicia containing complete plate information and process parameters onto the flexo plate during the plate making process. This preliminary action ensures that all necessary data is available on the plate itself before it enters the printing workflow, eliminating the need for manual parameter re-entry at subsequent stages.
Solution Approach 2:
The system creates a digital copy of all plate and process information in machine-readable format (such as 2D codes or RFID tags) that is attached to or embedded in the physical plate. This copy travels with the plate through all processing steps, ensuring information persistence without manual intervention.
2Reliability
If markings are added to flexo plates, then plate tracking is enabled, but markings are removed during processing steps
Solution Approach 1:
The machine-readable indicia are applied to the plate during the plate making process, before any processing steps that might remove conventional markings. This timing ensures the markings are part of the plate structure itself and will survive subsequent processing.
Solution Approach 2:
The system uses machine-readable indicia formats (such as 2D codes or RFID tags) that have different physical and chemical properties than conventional markings. These formats are designed to withstand the processing conditions that would remove traditional markings, maintaining information persistence throughout the workflow.
3Productivity
If automated plate processing is implemented, then productivity increases, but equipment-specific parameters cannot be efficiently attached to plates processed on different devices
Solution Approach 1:
The machine-readable indicia system is designed to be universally readable by processing equipment across different production rows and facilities. The standardized format allows any equipped device to read and interpret the plate information and equipment-specific parameters, enabling automated processing regardless of which specific machine handles the plate.
Solution Approach 2:
The system encodes equipment-specific parameters in a standardized, machine-readable format that can be interpreted by different types of processing equipment. This allows plates to carry their own equipment-specific instructions that can be executed automatically on any compatible device in the workflow.
4Reliability
If manual parameter setting is used for different process steps, then flexibility is maintained, but human errors cause plate loss and rework
Solution Approach 1:
The flexo plate itself serves as the carrier of its own processing information and parameters. The plate automatically provides all necessary data to the processing equipment through the machine-readable indicia, eliminating the need for manual parameter setting by operators and reducing human error.
Solution Approach 2:
The system creates a feedback loop where processing equipment reads the machine-readable indicia on the plate, automatically adjusts parameters based on the encoded information, and executes the appropriate processing steps. This closed-loop automation reduces reliance on manual intervention and minimizes errors.
Data Source
AI summary
Systems and processes for making a flexo plate, and plates made thereby. Non-printing indicia defined by areas of presence and absence of polymer in the plate floor are readable downstream of the washing or other non-cured-polymer-removal step but do not print in the printing step. The non-printing indicia may define a repeating pattern of alphanumeric characters, non-text graphics, or a combination thereof.