Multi-Color Inkjet Printing Machine Dynamic Station Segmentation
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Solution Overview
Problem
Current multi-color ink printing machines struggle to produce high-quality, high-resolution printed products at industrial production speeds while also being cost-effective and versatile in color configuration.
Innovation Solution
A method for operating a multi-color ink printing machine with at least seven printing stations, where three stations print a first partial image with one color system at half the desired resolution, and three more stations print a complementary second partial image with the same color system at the same resolution, with an additional station printing black ink at half resolution, allowing for configuration changes between four-color and seven-color modes to optimize production speed and ink usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a printing press operates with seven printing stations in KCMYOGV configuration to produce seven-color print products, then color variety and print quality are improved, but production speed is limited to maximum first production speed v1
Solution Approach 1:
The patent applies dynamics by making the printing press configuration changeable between different color modes (KCMYOGV seven-color mode and KCMYCMY four-color mode). The system dynamically adjusts which printing stations are active based on the print job requirements, allowing the machine to optimize between color variety and production speed for different tasks
Solution Approach 2:
The patent segments the seven printing stations into different functional groups that can be independently activated. By dividing the stations into color-specific groups (CMY, OGV, K), the system can selectively engage only the necessary stations for each print job, enabling faster four-color printing when seven-color output is not required
2Productivity
If a printing press uses four printing stations in KKKK configuration to quadruple production speed, then productivity increases to 4×, but print quality and color capability deteriorate significantly
Solution Approach 1:
The system dynamically switches between different operational modes: full seven-color mode for high-quality color printing, four-color mode for balanced performance, and selective station activation for high-speed black-and-white or limited-color printing. This dynamic configuration allows the press to achieve up to 4× production speed when using only necessary stations while maintaining quality when all stations are engaged
3Manufacturing precision
If a printing press operates with all seven printing stations active to maintain high print resolution, then manufacturing precision is improved, but device complexity and operational complexity increase
Solution Approach 1:
The patent segments the printing stations into color-specific groups (CMY group, OGV group, and K group) that can be independently controlled. This segmentation simplifies the operational complexity by allowing the system to activate only the relevant color groups needed for each print job, reducing the effective complexity from managing all seven stations simultaneously to managing 1-3 groups based on requirements
Solution Approach 2:
The printing press is designed with multi-functionality to handle various color configurations (KCMYOGV seven-color, KCMYCMY four-color, and selective black-only modes) using the same physical hardware. This universality reduces device complexity by eliminating the need for multiple specialized presses, as one press can perform all functions by selectively activating different station groups
4Manufacturing precision
If a printing press uses different color systems (CMY and OGV) in different printing stations, then color gamut and print quality are improved, but ink management and operational complexity increase
Solution Approach 1:
The patent segments the ink management system according to the color groups, with separate ink supplies and management for CMY inks and OGV inks. This segmentation simplifies ink changes by allowing operators to switch between color modes (e.g., from seven-color to four-color) by activating or deactivating specific ink groups rather than managing all inks simultaneously, reducing operational complexity while maintaining color accuracy
Data Source
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AI summary
The invention relates to a method for operating a multicolor inkjet printing machine with at least seven printing stations, wherein printheads (1a to 8a) of the printing stations (1 to 7) print an image (20) of at least four colors onto a substrate (11) moving in a transport direction (12) with a print resolution predetermined in the transport direction of at least the color part of the image, wherein three printing stations print a first partial image (21) of the image with colors of a first color system and with half the print resolution, and three further printing stations print a second partial image (22) of the image complementary to the first partial image with colors of a second color system, the same as or different from the first color system, and with half the print resolution, such thatthat the first and second partial images complement each other to form the color part of the printed image and wherein at least one further printing station prints a third partial image (23) of the printed image with black ink and with half the print resolution.