Persistent Marking of Flexo Plates via Machine-Readable Indicia
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Solution Overview
Problem
Current flexographic printing plate workflows face inefficiencies due to incomplete and lost information during the plate-making process, leading to operator mistakes, time loss, and financial losses, as prior art markings only contain limited information and are often removed during processing, requiring manual re-entry of parameters.
Innovation Solution
A system that embeds machine-readable indicia, such as 2D codes or RFID tags, on flexographic printing plates to persistently convey process parameters and identifiers through various workflow steps, allowing for automated control and tracking of plate processing machines, ensuring accurate parameter settings and reducing human error.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If prior art markings are used on printing plates, then plate identification is possible, but information is incomplete and lost during processing
Solution Approach 1:
The system embeds machine-readable indicia containing complete process parameters into the printing plate during the plate making process, before the plate enters production. This preliminary encoding ensures all necessary information is preserved throughout subsequent processing steps without requiring manual re-entry or risking information loss.
Solution Approach 2:
The invention creates a digital copy of all process parameters in machine-readable form directly within the printing plate structure. This copied information travels with the plate through the entire workflow, eliminating information loss that occurs when parameters are not embedded in the plate itself.
2Reliability
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 printing plate becomes self-sufficient by containing its own process parameter information in machine-readable indicia. Each plate carries its own instructions, eliminating the need for manual parameter setting and reducing human error while maintaining operational flexibility through plate-specific encoded data.
Solution Approach 2:
The system establishes a feedback loop where processing machines read the machine-readable indicia on each plate and automatically adjust parameters accordingly. This closed-loop control ensures parameter accuracy while reducing manual intervention, as the plate itself provides the feedback information needed for correct processing.
3Adaptability or versatility
If equipment-specific parameters are attached to plates, then processing accuracy improves, but plates processed on different devices cannot share parameters
Solution Approach 1:
The machine-readable indicia system is designed to be universally readable across different processing devices while maintaining plate-specific parameter information. The same indicia structure can be read by various equipment types, enabling parameter transferability across devices without sacrificing adaptability to different processing requirements.
Solution Approach 2:
The system encodes parameters in a flexible machine-readable format that can be interpreted and adapted by different processing devices. The indicia contains core parameter information that can be translated or adjusted for different equipment types, maintaining both device compatibility and parameter transferability throughout the workflow.
4Loss of information
If markings are removed during plate processing, then printing surface is clean, but information must be manually re-entered
Solution Approach 1:
The system performs preliminary encoding of all process parameters into the printing plate structure during plate making, before any processing steps that might remove surface markings. This early embedding ensures information retention even when surface markings are removed during washing or processing, eliminating the need for manual re-entry.
Solution Approach 2:
The invention creates a permanent digital copy of process parameters within the plate's structural layers, separate from removable surface markings. This copied information persists through processing steps that remove surface-level indicia, preventing information loss and eliminating time-consuming manual re-entry operations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system ensures accurate and efficient transmission of process parameters, reducing errors and rework, improving workflow control, and enabling real-time tracking of plates, thus enhancing operational efficiency and reducing costs.
Implementation Method 1
RFID tags... to persistently convey process parameters and identifiers
Implementation Method 2
2D codes... to persistently convey process parameters and identifiers
Data Source
Figure 1~2B
Figure 3~4
Figure 5~6
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 created using microdots imaged during a LAMS layer imaging step are readable downstream of the washing or other non-cured-polymer-removal step but not to print in the printing step. The non-printing indicia may define a repeating pattern of alphanumeric characters, non-text graphics, or a combination thereof. A difference in growth of plate structures corresponding to different types of microdots may be used for characterizing processing conditions.