Piezo Actuator Printing Form for Dynamic Cavity Control
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Solution Overview
Problem
Current printing technologies, such as gravure and digital printing, face limitations in flexibility and cost-effectiveness, with gravure requiring multiple Ballard skins for each print pattern and digital printing experiencing quality issues due to spray mist and print head malfunctions.
Innovation Solution
A device with a printing form comprising a pressure body, multiple piezo actuators, and a cover layer, where each piezo actuator can be independently controlled to form cavities for receiving a print medium, allowing for dynamic adjustment of cavity depth and shape to accommodate various print patterns without the need for static printing forms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If gravure printing uses multiple Ballard skins for each print pattern, then printing quality is maintained, but device complexity and cost increase
Solution Approach 1:
The printing form uses piezoelectric actuators to dynamically adjust cavity depth and shape in real-time based on the print pattern requirements, replacing the static multiple Ballard skins approach with a single adaptive printing form that can change its geometry electronically
Solution Approach 2:
The invention changes the physical parameters of the printing form by using piezoelectric actuators to modify cavity depth and shape, allowing the same printing form to adapt to different print patterns through electrical parameter control rather than physical replacement of Ballard skins
2Adaptability or versatility
If gravure printing requires producing and storing multiple Ballard skins, then printing flexibility is achieved, but loss of time and resources increase
Solution Approach 1:
The printing form transitions from static Ballard skins to a dynamic system with piezoelectric actuators that can instantly reconfigure cavity geometry, eliminating the time required for producing and changing physical Ballard skins while maintaining printing flexibility
Solution Approach 2:
Instead of creating physical copies of Ballard skins for different print patterns, the invention uses digital control to replicate the desired cavity configurations electronically, eliminating the need for physical production and storage of multiple skin variants
3Device complexity
If digital printing is used to eliminate Ballard skins, then device complexity is reduced, but manufacturing precision deteriorates due to spray mist and print head malfunctions
Solution Approach 1:
The invention replaces the digital printing mechanical system (spray mist, print heads) with a gravure-based mechanical system enhanced by piezoelectric actuators, maintaining the contactless transfer mechanism while eliminating spray-related quality issues through controlled cavity formation
Solution Approach 2:
The printing form combines the advantages of gravure printing (contactless transfer, no spray mist) with the flexibility of digital control (programmable cavity patterns), creating a universal system that achieves both high precision and adaptability
4Manufacturing precision
If the printing form uses fixed cavity structures, then manufacturing precision is maintained, but adaptability to different print patterns is limited
Solution Approach 1:
The printing form uses piezoelectric actuators to dynamically adjust cavity depth and shape while maintaining structural stability, enabling the same physical form to adapt to different print patterns without compromising manufacturing precision
Solution Approach 2:
The invention changes the operational parameters of the cavity structure by using piezoelectric actuators to modify cavity geometry in response to different print requirements, allowing a single stable structure to serve multiple printing functions
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
This solution enables flexible and economical printing with high print quality, eliminating the need for multiple Ballard skins and reducing quality issues associated with digital printing, while allowing for longer print data lengths and mixed colors.
Implementation Method 1
The printing form has a printing body, a plurality of piezoelectric actuators, and a cover layer... each piezo actuator can be controlled independently of the other piezo actuators... a voltage is applied to one or more piezo actuators
Data Source
Figure 1A~1B
Figure 2A~3
Figure 4A~4B
AI summary
The invention relates to a device for generating pressure on a substrate, wherein the device comprises at least one printing form, at least one device for dispensing a printing medium, at least one device for data transmission, and at least one control device. The printing form has a printing body, a plurality of piezoelectric actuators, and a cover layer, the cover layer being configured to form a plurality of cavities for receiving a printing medium. The invention further relates to a method for generating a plurality of cavities on a printing form, wherein the printing form comprises a printing body, a plurality of piezoelectric actuators, and a cover layer.