Inkjet Print Data Dot Size Adjustment for Mist Suppression
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Solution Overview
Problem
Inkjet printers face issues with ink mist formation during printing, leading to contamination within the printer and affecting print quality and stability, as existing mist collection devices only address adhesion rather than mist generation suppression.
Innovation Solution
An image processing apparatus and method that dynamically adjust dot formation ratios in print data to reduce mist generation by increasing the formation ratio of larger dots when the mist generation amount exceeds a threshold, using a mist calculating unit to regenerate print data with higher large dot formation ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If small dots are used for printing, then image quality is improved, but mist generation amount increases
Solution Approach 1:
The invention changes the parameter of dot size distribution in print data. When mist generation is detected to be excessive, the system modifies the print data to increase the ratio of larger dots while maintaining the same ink volume, thereby reducing mist generation while preserving image quality.
Solution Approach 2:
The invention dynamically adjusts dot formation ratios based on real-time mist generation calculations. The print data is regenerated on-the-fly by the control unit, changing dot size distribution adaptively according to the calculated mist generation amount, making the system responsive to actual printing conditions.
2Object-generated harmful factors
If mist collection device is added, then mist adhesion is suppressed, but device complexity increases
Solution Approach 1:
The invention extracts the mist generation suppression function from the physical mist collection device and implements it through software-based print data processing. By calculating mist generation amount and regenerating print data, the system achieves mist suppression without adding complex hardware collection mechanisms.
Solution Approach 2:
The invention replaces the mechanical/physical mist collection system with a computational approach. The control unit uses algorithms to calculate mist generation and dynamically adjust print data, substituting physical mist collection mechanisms with software-based control.
3Object-generated harmful factors
If print data is regenerated with larger dots, then mist generation is suppressed, but image quality may deteriorate
Solution Approach 1:
The invention carefully adjusts dot size parameters while maintaining ink volume equivalence. By changing the distribution of dot sizes rather than simply increasing all dot sizes, the system suppresses mist generation while preserving the visual quality and tonal accuracy of the printed image.
Data Source
AI summary
An image processing apparatus includes a print data generating unit that generates print data for printing an image with ink, the print data defining, for each of pixels of the image, non-formation of a dot or formation of a dot of any size of a plurality of sizes, and a mist calculating unit that calculates, based on first print data of the print data generated by the print data generating unit, a mist generation amount of the ink, in which the print data generating unit is configured to generate, when the mist generation amount exceeds a predetermined threshold value, second print data of the print data in which a formation ratio of the dot of a relatively large size among the plurality of sizes is higher than the formation ratio in the first print data of the print data.