Inkjet Printer Nozzle Row Ejection Data Reversal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Inkjet printers with line-type inkjet heads experience ink temperature differences between nozzle rows, leading to unstable ink flight and degraded print quality due to uneven operating rates, which existing temperature adjustment methods in the ink supply system cannot effectively alleviate.
Innovation Solution
An inkjet printer with a controller that dynamically adjusts the correspondence of ejection data between nozzle rows, reversing printing rates and using temperature sensors to maintain ink temperatures within the proper range, thereby reducing temperature differences and preventing print quality degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the inkjet head uses a common conduit to supply ink to multiple nozzle rows, then the device complexity is reduced, but the ink temperature difference between nozzle regions increases due to uneven operating rates
Solution Approach 1:
The controller dynamically switches the correspondence between ejection data and nozzle rows based on printing progress. By reversing which nozzle row receives which ejection data in alternate printing units, the system dynamically balances the operating rates of different nozzle rows, thereby reducing ink temperature differences without changing the physical structure of the ink supply system.
Solution Approach 2:
The system implements periodic reversal of ejection data correspondence between nozzle rows in alternate printing units. This periodic switching ensures that no single nozzle row continuously processes high-volume ejection data, distributing the thermal load over time and maintaining more uniform ink temperatures across all nozzle regions.
2Productivity
If continuous printing time increases, then productivity is improved, but the ink temperature difference between nozzle regions increases causing print quality degradation
Solution Approach 1:
The controller dynamically adjusts the ejection data to nozzle row mapping based on cumulative printing progress. By switching the correspondence in alternate printing units, the system prevents any single nozzle row from accumulating excessive heat over extended printing periods, thereby maintaining print quality while enabling continuous high-volume production.
Solution Approach 2:
The system uses feedback from printing progress to dynamically switch ejection data correspondence. By monitoring which nozzle row has been operating longer and switching roles accordingly, the system maintains optimal thermal conditions for ink ejection throughout continuous printing operations, preventing quality degradation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The dynamic adjustment of ejection data correspondence between nozzle rows effectively maintains ink temperatures within the proper range, reducing temperature deviations and stabilizing print quality by distributing printing rates and using temperature sensors to control inkjet head operations.
Implementation Method 1
the ink temperature in the inkjet head is increased by heat generated by components such as piezoelectric elements which cause the nozzles to eject ink
Data Source
AI summary
An inkjet printer is provided which can alleviate the degradation of print quality caused by the deviation of ink temperature from a proper temperature range. A controller performs printing while controlling the correspondence of ejection data to nozzle rows so that the ink temperature difference between regions caused by ink ejection operations may be smaller than that in the case where printing is performed with the correspondence of upstream nozzle row ejection data and downstream nozzle row ejection data to an upstream nozzle row and a downstream nozzle row fixed.