Halftone Processing Rule Generation for Inkjet Printers
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Solution Overview
Problem
Current printing systems face challenges in generating halftone processing rules that are appropriate for specific printing modes, as they often do not adequately reflect the characteristics of the printing system, leading to suboptimal image quality due to system errors such as head vibration, non-jetting, and landing interference.
Innovation Solution
A printing system that automatically acquires and updates characteristic parameters related to the printing system's specifications, generating halftone processing rules that consider system errors and optimize image quality by reflecting these parameters in the halftone processing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional halftone processing is used without considering printing system characteristics, then the processing is simple and fast, but image quality deteriorates due to system errors such as head vibration, non-jetting, and landing interference
Solution Approach 1:
The patent applies preliminary action by pre-acquiring characteristic parameters of the printing system (head vibration, non-jetting, landing interference) and pre-calculating compensation values before actual halftone processing. This allows the system to automatically compensate for system errors during printing without requiring complex real-time adjustments, thereby improving image quality while maintaining processing efficiency
Solution Approach 2:
The patent changes parameters by introducing characteristic parameters that represent printing system errors (head vibration amount, non-jetting frequency, landing interference intensity) and using these parameters to adjust halftone processing. By varying processing parameters based on measured system characteristics, the patent optimizes image quality for specific printing conditions without requiring complex hardware modifications
2Manufacturing precision
If characteristic parameters are manually input by users, then accurate halftone processing rules can be generated, but operational load on users increases
Solution Approach 1:
The patent implements self-service by enabling the printing system to automatically acquire its own characteristic parameters through built-in measurement functions. The system performs self-diagnosis to measure head vibration, non-jetting, and landing interference, then automatically generates halftone processing rules based on these measurements. This eliminates the need for manual parameter input by users while maintaining high processing accuracy
Solution Approach 2:
The patent applies feedback by measuring actual printing system characteristics and using this information to adjust halftone processing parameters. The system continuously monitors printing conditions, acquires characteristic parameters, and feeds this information back into the processing algorithm to optimize image quality dynamically
3Device complexity
If generic halftone processing rules are used across different printing modes, then device complexity is reduced, but image quality becomes suboptimal for specific printing conditions
Solution Approach 1:
The patent applies dynamics by making halftone processing rules adaptive rather than static. The system dynamically selects and adjusts processing rules based on acquired characteristic parameters and current printing conditions. This allows the same printing system to optimize image quality across different printing modes (document printing, photograph printing, large-format printing) without requiring multiple fixed processing rule sets
Data Source
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AI summary
There are provided a printing system, a method of generating a halftone processing rule, a method of acquiring a characteristic parameter, image processing device and method, a halftone processing rule, a halftone image, a method of manufacturing a printed material, an ink jet printing system, and a program which are capable of reducing an operation load of a user and acquiring a halftone processing rule appropriate for the printing system. A characteristic parameter acquisition chart (100) including a pattern for acquiring characteristic parameters related to characteristics of the printing system is output, and the output characteristic parameter acquisition chart (100) is read by image reading means. The characteristic parameters are acquired by analyzing the read image of the characteristic parameter acquisition chart (100), and halftone processing rules that define the processing contents of halftone processes used in the printing system are generated based on the acquired characteristic parameters.