Inkjet Recording Head Defect Compensation via Adjacent Port Selection
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Solution Overview
Problem
Existing recording apparatuses face challenges in maintaining image quality due to ink discharge defects, where complementary recording methods either fail to adequately address defects or significantly reduce throughput, especially when using adjacent discharge ports for compensation.
Innovation Solution
A recording apparatus with a determination unit and a complementing unit that assesses tone data and discharge defect information to strategically utilize adjacent discharge ports for complementary ink provision, ensuring ink is discharged from a different position than the defective port, thereby preventing excessive throughput reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If complementary recording is carried out using the discharge port adjacent to the defective discharge port, then image quality is improved, but throughput is reduced due to additional processing requirements
Solution Approach 1:
The system pre-determines which adjacent discharge port will be used for complementary recording before the actual recording process. This preliminary selection avoids the need for real-time processing decisions during recording, thereby maintaining high throughput while ensuring image quality through consistent complementary recording using the predetermined adjacent port.
2Reliability
If ink discharge is set to the adjacent discharge port, then the adjacent port cannot be used to complement the discharge defect, but using another adjacent port increases processing complexity
Solution Approach 1:
The system applies different handling strategies to different adjacent discharge ports based on their specific characteristics and discharge settings. By evaluating which adjacent port has appropriate discharge capabilities and is not already assigned for primary recording, the system selects the most suitable port for complementary recording, optimizing both reliability and processing efficiency without unnecessary complexity.
Data Source
AI summary
A recording apparatus includes a recording head including a plurality of ink discharge ports arranged in a predetermined direction, and a complementing unit configured to, according to discharge defect information identifying a defective discharge port at which a discharge defect has occurred among the plurality of ink discharge ports, determine to cause provision of complementary ink to be conducted from a different discharge port configured to discharge the ink at a different position from the identified defective discharge port, wherein the complementing unit determines to use a discharge port configured to provide the ink at a position on one side that is one of positions adjacent in the predetermined direction to a position at which the at least one discharge port provides the ink as the different discharge port for the discharge port identified as the defective discharge port.