Variable Printing via Aqueous Jet Lithography
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Solution Overview
Problem
Current printing technologies, such as lithographic and gravure printing, are not cost-effective for short-run jobs or those with variable data due to high overhead costs and inability to produce variable images at high quality and speed, while ink jet printing lacks the quality and speed of traditional lithographic and gravure methods.
Innovation Solution
Integration of ink jet technology with lithographic systems using an aqueous jet system to print variable negative images on a lithographic plate cylinder, allowing for high-speed, fully variable, and high-quality printing by replacing the traditional dampening system with a cleaning and aqueous jet system that uses water or glycol solutions to control ink placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If lithographic or gravure printing is used, then high image quality is achieved, but the ability to print variable data at high speed is lost due to permanent plate requirements
Solution Approach 1:
The patent applies dynamics by replacing the static permanent plate with a dynamic plate cylinder surface that can be repeatedly re-imaged. The plate cylinder receives variable images through aqueous jet deposition during each revolution, allowing the printing surface to change dynamically without physical plate changes, thus enabling both high quality and variable data printing.
Solution Approach 2:
The patent substitutes the mechanical plate making and changing system with an aqueous jet deposition system. Instead of physically creating and changing plates mechanically, the system uses controlled aqueous jet streams to deposit variable images directly onto the plate cylinder surface, eliminating the need for physical plate handling while maintaining lithographic quality.
2Adaptability or versatility
If ink jet printing is used for variable data, then printing flexibility is improved, but image quality and speed are significantly reduced compared to lithographic methods
Solution Approach 1:
The patent introduces an intermediary approach by using aqueous jet deposition onto a lithographic plate cylinder as a mediator between traditional lithography and ink jet printing. The aqueous jet system provides variable data capability, while the lithographic plate cylinder and offset printing mechanism ensure high image quality and speed, combining the advantages of both technologies.
Solution Approach 2:
The patent changes the parameter of the printing system by using aqueous solution deposition instead of traditional ink jet ink. This parameter change allows the system to achieve both variable data capability and high-quality output by controlling the aqueous solution application through jet technology while maintaining the quality characteristics of lithographic printing.
3Reliability
If traditional offset lithography with dampening system is used, then consistent image transfer is achieved, but variable image printing capability is lost
Solution Approach 1:
The patent extracts the dampening system from the traditional offset lithography process and replaces it with an aqueous jet deposition system. This extraction allows the system to eliminate the fixed dampening pattern that limits variable printing while maintaining the essential offset printing mechanism that ensures reliable image transfer consistency.
Solution Approach 2:
The plate cylinder in the patent serves multiple functions: it acts as both the image-bearing surface for high-quality offset printing and the receptacle for variable aqueous jet deposition. This multi-functionality allows the same component to enable both consistent image transfer and variable data printing capabilities.
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
Enables high-speed variable printing at lithographic quality, reducing production costs and eliminating the need for multiple plate changes, while maintaining image quality and speed, and allowing for direct sequential page printing of magazines without post-processing.
Implementation Method 1
Due to the hydrophilic properties of the plate, the aqueous solution will stay in place
Implementation Method 2
The cleaning system may remove residue ink and/or aqueous solution after each revolution of the plate cylinder
Data Source
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AI summary
Systems and methods for high-speed variable printing are provided. Ink jet technology and lithographic systems may be combined in such a way to create a fully variable and high-quality print system. A protective positive image in an aqueous solution is applied on top of ink applied to a print cylinder. The ink is then stripped away from the area of the cylinder not covered by the protective positive image, and the positive image is transferred in ink to a print medium. The systems and methods described herein may be used to create high-quality one-to-one marketing applications.