Photopolymer Plate Processing Drum for Integrated Imaging and Curing
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Solution Overview
Problem
Existing flexographic printing processes require multiple separate apparatus for imaging, curing, and uncured polymer removal, leading to increased floor space requirements, operator intervention, and unreliable communication between devices.
Innovation Solution
An integrated apparatus with a central drum and controller for processing photopolymer printing plates, incorporating radiation sources for curing and thermal processing, and a plate holder for backside exposure, enabling all steps to be performed efficiently and reliably in a single device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate apparatus are used for imaging, curing, and uncured polymer removal, then each device can be optimized for its specific function, but floor space requirements increase and operator intervention becomes more frequent
Solution Approach 1:
The patent combines imaging, curing, and uncured polymer removal functions into a single integrated apparatus with a central drum. The drum serves as a common platform where plates are imaged, cured by UV radiation sources, and processed through thermal treatment for polymer removal, eliminating the need for multiple separate devices and reducing floor space requirements.
Solution Approach 2:
The central drum is designed as a universal component that performs multiple functions: holding plates during imaging, supporting plates during UV curing, and facilitating thermal processing. The drum's versatility allows different processing steps to occur in sequence on the same component, reducing the need for specialized equipment for each function.
2Adaptability or versatility
If multiple separate apparatus are used for plate processing, then each device can operate independently, but communication between devices becomes unreliable and operator intervention increases
Solution Approach 1:
The patent integrates multiple processing functions into a single apparatus, eliminating communication interfaces between separate devices. The controller coordinates imaging, curing, and thermal processing operations within one system, ensuring reliable data transfer and process coordination without the communication failures that occur between independent devices.
3Ease of operation
If manual handling is used for plate processing, then operator flexibility is maintained, but handling time increases and automation is reduced
Solution Approach 1:
The apparatus is designed to automatically handle plates through the entire processing sequence. The drum rotates to position plates for different operations, UV sources automatically cure plates, and thermal processing occurs without manual intervention. The system serves itself by coordinating all processing steps automatically, eliminating manual handling time while maintaining operational control.
4Area of stationary object
If an integrated apparatus is used for all processing steps, then floor space is reduced and automation is improved, but device complexity increases
Solution Approach 1:
The integrated apparatus is organized into distinct functional modules around the central drum: an imaging module, a UV curing module with radiation sources, and a thermal processing module. Each module is separately designed and can be independently maintained, reducing the complexity management burden while maintaining integration benefits.
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 integrated apparatus reduces floor space, minimizes operator intervention, and enhances process coordination, ensuring efficient and reliable production of flexographic printing plates with improved automation and reduced handling time.
Implementation Method 1
a first radiation source configured to expose first portions of the photopolymer plate precursor with the backside of the plate precursor disposed at least in part on the plate holder with the first radiation source positioned beneath the plate holder and arranged to emit radiation through a window in the plate holder onto the plate precursor backside
Implementation Method 2
laser imaging system includes one or more laser light sources configured for laser imaging the LAMS layer during an imaging operation
Implementation Method 3
The photopolymer is heated to a temperature that brings the non-cured portions of polymer close to the melting point such that the uncured polymer starts to liquify
Data Source
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AI summary
A method and apparatus for processing a photopolymer printing plate precursor. A drum is configured to receive and hold the plate precursor during some processing operations. A plate holder is arranged tangentially adjacent to the drum for receiving the plate during precursor loading and/or unloading, and a controller is configured to control execution of the plate processing operations. Backside curing is performed while the plate precursor is disposed on the plate holder, and imaging, frontside curing, uncured photopolymer removal, aftertreatment, and optional detacking are performed with the plate precursor disposed on the drum.