Printer Nozzle Complementation Modes for Image Quality
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Solution Overview
Problem
Existing printing apparatuses face challenges in maintaining image quality when nozzle ejection abnormalities occur, as current complementation methods either degrade image accuracy or color fidelity, and are not suitable for precise printing processes like bar codes or photos.
Innovation Solution
A printing apparatus with a head unit comprising multiple nozzle groups and a print control unit that can switch between three complementation modes: increasing ink ejection from adjacent nozzles of the same color, nozzles of different colors, or nozzles from different arrays to compensate for abnormal ejections, ensuring image quality is maintained.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If one nozzle is complemented with another nozzle adjacent to the one nozzle, then the ejection abnormality is compensated, but the position accuracy of the formed dots deteriorates
Solution Approach 1:
The patent implements dynamic selection of complementation modes based on the type of image being printed. For photos, the system selects color-matched nozzles; for barcodes and blueprints, it selects nozzles at the same position. This dynamic adaptation resolves the contradiction by optimizing the complementation strategy according to the specific requirements of each printing task.
Solution Approach 2:
The patent applies different complementation strategies to different spatial locations and image types. By identifying the specific region where ejection abnormality occurs and selecting complementation nozzles based on the local requirements (color accuracy for photos, position accuracy for barcodes), the system maintains both complementation effectiveness and manufacturing precision.
2Reliability
If one nozzle is complemented with another nozzle ejecting another color of ink, then the ejection abnormality is compensated, but the color accuracy of the formed dots deteriorates
Solution Approach 1:
The system dynamically selects complementation nozzles based on the image type. For photo printing where color accuracy is critical, it selects nozzles ejecting the same color ink. For barcodes and blueprints where color accuracy is less critical, it can use adjacent nozzles with different colors. This dynamic selection resolves the contradiction between complementation effectiveness and color accuracy.
Solution Approach 2:
The patent applies color-matched complementation specifically to photo regions where color accuracy is essential, while allowing position-matched complementation for other regions. This localized quality control ensures that color accuracy is maintained where needed without compromising overall complementation effectiveness.
3Ease of operation
If a single complementation mode is used, then the system is simple to operate, but the image quality deteriorates when the printing process requires high accuracy
Solution Approach 1:
The patent implements a multi-functional complementation system that can adapt to different printing requirements. The print control unit automatically selects the appropriate complementation mode (color-matched or position-matched) based on the image type, providing universal functionality that maintains both ease of operation and high image quality across different printing scenarios.
Solution Approach 2:
The system dynamically adjusts the complementation strategy based on the printing task requirements. For photos, it uses color-matched complementation; for barcodes and blueprints, it uses position-matched complementation. This dynamic adaptation maintains system simplicity while achieving high image quality for different types of prints.
Data Source
AI summary
A printing apparatus including: a first nozzle group including a first and third nozzles which ejects a first liquid; and a second nozzle group including a second nozzle which ejects a second liquid, in which, when an ejection state of the liquid ejected from the one nozzle which belongs to the first nozzle group is abnormal, complementation is performed using complementation modes of a first complementation mode that increases the amount of a liquid to be ejected from the first nozzle instead of allowing the one nozzle to eject the liquid, a second complementation mode that increases the amount of the liquid to be ejected from the second nozzle instead of allowing the one nozzle to eject the liquid, and a third complementation mode that increases the amount of the liquid to be ejected from the third nozzle instead of allowing the liquid to be ejected from the one nozzle.