Nozzle Surface Wiping Device with Dynamic Cleaning Liquid Control
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Solution Overview
Problem
Existing nozzle surface wiping methods for liquid discharge heads often result in discharge performance deterioration and striped defects when using different types of wiping members, due to insufficient verification of the causes of discharge deterioration and limited alternatives for wiping webs.
Innovation Solution
A nozzle surface wiping device that includes cleaning liquid application means, condition information holding means, type specifying means, and control means to determine and apply the appropriate saturated liquid amount of cleaning liquid based on the type of wiping member, preventing liquid suction and meniscus collapse, and allowing the use of multiple types of wiping members without performance degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the same cleaning liquid application conditions are used for different types of wiping members, then the device complexity is reduced, but discharge performance deteriorates and striped defects are generated
Solution Approach 1:
The cleaning liquid application conditions are made dynamic and adaptable based on the wiping member type. The system automatically adjusts the saturated liquid amount according to the specific wiping member being used, transitioning from fixed conditions to variable conditions that optimize performance for each wiping member type.
Solution Approach 2:
The patent changes the parameter of cleaning liquid amount based on wiping member type. By identifying and applying the saturated liquid amount specific to each wiping member type, the system optimizes cleaning effectiveness while preventing discharge performance deterioration and striped defects.
2Ease of operation
If a fixed amount of cleaning liquid is applied to all wiping members, then the operation is simplified, but liquid is excessively sucked out of the nozzle causing meniscus collapse
Solution Approach 1:
The system performs preliminary identification of the wiping member type before applying the cleaning liquid. Based on this identification, it pre-determines the appropriate saturated liquid amount to apply, preventing excessive liquid application that would cause nozzle liquid suction and meniscus collapse.
Solution Approach 2:
The system uses feedback from wiping member type identification to adjust the cleaning liquid application amount. By monitoring which wiping member is installed and responding with the appropriate saturated liquid amount, the system prevents harmful liquid suction while maintaining ease of operation.
3Reliability
If the saturated liquid amount is increased to prevent nozzle liquid suction, then discharge performance is maintained, but cleaning liquid consumption increases
Solution Approach 1:
The system optimizes the cleaning liquid amount parameter by applying the minimum necessary saturated liquid amount for each wiping member type. This prevents both insufficient liquid application (which would cause discharge performance deterioration) and excessive liquid application (which would waste cleaning liquid).
Solution Approach 2:
The system establishes a reference model of saturated liquid amounts for different wiping member types. By copying and applying the appropriate pre-determined saturated liquid amount based on wiping member type identification, the system achieves optimal cleaning performance with minimal cleaning liquid consumption.
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 solution effectively suppresses discharge deterioration and maintains optimal wiping performance across various wiping members, broadening the range of available alternatives and preventing striped defects in printed materials.
Implementation Method 1
applying respective saturated liquid amounts of the cleaning liquid to a plurality of types of the wiping members
Data Source
AI summary
A nozzle surface wiping device capable of using a plurality of types of wiping members in a state where discharge deterioration is suppressed regarding the respective wiping members is provided. In the nozzle surface wiping device that wipes a nozzle surface of a liquid discharge head with a wiping member to which a cleaning liquid is applied, information on cleaning liquid application conditions for applying respective saturated liquid amounts of the cleaning liquid to a plurality of types of wiping members, respectively, according to the types of the respective wiping members is held in advance. The type of a wiping member to be used for the wiping of the nozzle surface of the liquid discharge head is specified, and a saturated liquid amount of the cleaning liquid is applied to the wiping member according to the determined cleaning liquid application conditions corresponding to the type of the specified wiping member.