Liquid Discharging Apparatus Dynamic Droplet Control
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Solution Overview
Problem
Existing liquid discharging apparatuses face challenges in suppressing bleed-through during double-sided recording and degradation of color development during single-sided recording.
Innovation Solution
The apparatus includes a channel unit with nozzles, an actuator for liquid discharge, and a controller that adjusts the driving signal for liquid discharge based on the recording mode. For double-sided recording, the controller supplies a driving signal with a smaller liquid droplet amount than for single-sided recording to prevent bleed-through, while ensuring adequate liquid discharge for single-sided recording to maintain color development.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the liquid droplet amount is increased to improve color development during single-sided recording, then the color development is improved, but bleed-through occurs during double-sided recording
Solution Approach 1:
The patent applies dynamics by making the liquid droplet amount adjustable based on recording mode. The system transitions from a fixed droplet amount to a dynamic control mechanism where the controller selects between a first liquid droplet amount for single-sided recording and a second liquid droplet amount for double-sided recording, optimizing performance for each mode
Solution Approach 2:
The patent changes the parameter of liquid droplet amount based on the recording mode determination. When double-sided recording is detected, the system switches to a smaller second liquid droplet amount to prevent bleed-through, while maintaining a larger first liquid droplet amount for single-sided recording to ensure adequate color development
2Object-affected harmful factors
If the liquid droplet amount is decreased to prevent bleed-through during double-sided recording, then bleed-through is suppressed, but color development deteriorates during single-sided recording
Solution Approach 1:
The system dynamically adjusts the liquid droplet amount based on the recording mode. The controller determines whether single-sided or double-sided recording is to be executed and accordingly selects the appropriate droplet amount, ensuring optimal performance for each mode without compromise
Solution Approach 2:
The patent implements parameter changes by switching between two distinct liquid droplet amounts based on recording mode determination. The first liquid droplet amount provides sufficient ink for high-quality single-sided recording, while the second liquid droplet amount prevents bleed-through in double-sided recording
3Ease of operation
If the same liquid droplet amount is used for both single-sided and double-sided recording, then the system is simple to operate, but either bleed-through occurs or color development deteriorates
Solution Approach 1:
The system performs self-service by automatically determining the recording mode and selecting the appropriate liquid droplet amount without requiring user intervention. The controller autonomously switches between the first and second liquid droplet amounts based on whether single-sided or double-sided recording is detected
Solution Approach 2:
The patent applies dynamics by implementing a dynamic control mechanism that adjusts the liquid droplet amount based on recording mode. This automated adaptation maintains ease of operation while optimizing color development and preventing bleed-through through real-time parameter adjustment
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
This solution effectively suppresses bleed-through during double-sided recording and maintains color development during single-sided recording by adjusting the liquid droplet amount based on the recording mode.
Implementation Method 1
an actuator configured to apply pressure to liquid in the individual channel to discharge the liquid from the nozzle
Data Source
AI summary
A liquid discharging apparatus includes: a channel unit having a nozzle and an individual channel; an actuator applying pressure to liquid in the individual channel to discharge the liquid from the nozzle; a driving circuit electrically connected to the actuator and supplying driving signal to the actuator; and a controller. In a case of determining that a single-sided recording is to be executed, the controller supplies the driving signal corresponding to each of gradation values for each of pixels when discharging the liquid toward one of a first surface and a second surface of a recording medium; in a case of determining that the double-sided recording is to be executed, the controller supplies the driving signal corresponding to each of the gradation values for each of the pixels when discharging the liquid toward the first surface and when discharging the liquid toward the second surface.