Inkjet Printer Nozzle Variability Compensation Control
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Solution Overview
Problem
Ink jet printers face challenges in maintaining image quality and reducing print time while compensating for variability in ink droplet discharging amounts from nozzles, which affects the precision and speed of the printing process.
Innovation Solution
A controlling device is introduced that includes an image processing unit and a supplying unit, capable of selecting between two process modes: one that uses correction data to compensate for nozzle variability and another that does not, allowing for improved image processing and print resolution adjustments based on nozzle characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If correction data is used to compensate for nozzle variability, then image quality is improved, but processing time is increased
Solution Approach 1:
The system dynamically selects between two processing modes based on user requirements. When high image quality is prioritized, correction mode is activated; when speed is prioritized, standard mode is used. This dynamic adaptability resolves the contradiction by allowing the system to optimize for different objectives as needed.
Solution Approach 2:
The invention changes the processing parameters by introducing a selectable correction mode that applies nozzle-specific correction data. This parameter change enables the system to adjust the degree of correction applied to image data based on the specific printing requirements, thereby balancing quality and speed.
2Manufacturing precision
If correction data for each nozzle is applied, then discharging amount variability is compensated, but device complexity increases
Solution Approach 1:
The correction data for each nozzle is pre-calculated and stored before actual printing occurs. This preliminary preparation allows the system to simply retrieve and apply pre-computed correction values during printing, rather than performing complex real-time calculations, thus reducing operational complexity while maintaining precision.
Solution Approach 2:
The system applies different correction treatments to different nozzles based on their individual characteristics. Each nozzle receives customized correction data specific to its discharging properties, allowing precise local compensation without requiring complex global adjustments to the entire printing system.
Data Source
AI summary
A controlling device may perform an image process on specific image data so as to generate processed image data, select a process mode from a plurality of process modes, including a first process mode and a second process mode, and perform the image process according to the selected process mode. The first process mode may be for performing the image process by performing, in order to compensate variability of discharging amounts of the liquid droplets discharged from the plurality of nozzles, a specific process on a target pixel within target image data using correction data for a target nozzle. The target nozzle may be to form a dot at a position on a print medium corresponding to the target pixel. The second process mode may be for performing the image process by performing the specific process on the target pixel within target image data without using the correction data for the target nozzle.