Dynamic Rib Height Adjustment for Curl Correction
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Solution Overview
Problem
Existing recording apparatuses face challenges in accurately correcting curl in paper sheets due to rapid discharge times and varying liquid adhesion, leading to inconsistent curl states that affect paper sheet mounting and alignment.
Innovation Solution
A recording apparatus with a projection mechanism that adjusts the height of a rib on the mount base according to the width dimension and liquid volume rate of the paper sheet, ensuring accurate curl correction by matching the rib height to the degree of curl, and includes features like air blowers for stable mounting and detectors for optimal loading and image quality modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If recording is performed by discharging liquid to the entire recording area simultaneously, then recording speed is improved, but the paper sheet curls due to excessive liquid adhesion
Solution Approach 1:
The rib height is made dynamically adjustable based on the detected liquid volume rate. The projection mechanism changes the rib's projection height according to the actual liquid adhesion amount, allowing the curl correction mechanism to adapt to different recording conditions while maintaining high-speed recording capability
Solution Approach 2:
The physical parameter of the rib (projection height) is changed based on the liquid volume rate detection results. By adjusting this parameter, the system optimizes curl correction effectiveness for different liquid adhesion scenarios without compromising recording speed
2Productivity
If discharge time is reduced to enhance recording speed, then productivity is improved, but available drying time decreases causing increased curling
Solution Approach 1:
The system uses liquid volume rate detection as feedback to determine the appropriate rib projection height. This feedback mechanism allows the system to compensate for insufficient drying time by adjusting the correction rib height according to the actual liquid amount on the paper sheet
Solution Approach 2:
The correction rib is positioned and adjusted before the paper sheet is fully discharged and mounted. This preliminary action allows curl correction to occur during the discharge process itself, effectively compensating for the reduced drying time
3Device complexity
If fixed rib height is used for curl correction, then device complexity is reduced, but curl correction accuracy deteriorates due to varying liquid volume rates
Solution Approach 1:
The rib projection height transitions from a fixed value to a dynamically adjustable parameter based on liquid volume rate detection. This dynamic adjustment capability significantly improves curl correction accuracy for varying liquid amounts while adding only minimal complexity through the projection mechanism
Solution Approach 2:
The correction rib provides localized height adjustment at the paper sheet center region, targeting the area most affected by liquid adhesion. This localized quality adjustment optimizes correction effectiveness without requiring complex overall system changes
4Adaptability or versatility
If correction rib projects to multiple heights through slit, then curl correction adaptability is improved, but device complexity increases
Solution Approach 1:
The patent replaces the mechanical slit-based height selection system with a projection mechanism that can dynamically adjust rib height. This substitution maintains adaptability while simplifying the overall structure by eliminating the need for multiple fixed-height slits and complex mounting arrangements
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 apparatus effectively corrects curl in paper sheets, ensuring accurate alignment and mounting, even with varying sheet dimensions and liquid adhesion, by dynamically adjusting the rib height and using air blowers for stability, thereby improving printing quality and efficiency.
Implementation Method 1
drying of the liquid advances and the recording surface shrinks
Data Source
AI summary
A recording apparatus includes: a mount base having a mount surface on which a sheet discharged through a medium discharge outlet is mounted, the mount surface facing the recording surface of the sheet; a projection rib that is provided in the mount base, is projectable from the mount surface, and extends along a discharge direction of the sheet discharged through the medium discharge outlet, through a center of the sheet in a width direction crossing the discharge direction of the sheet; and a projection mechanism that causes the projection rib to project from the mount surface to a rib height according to a dimension of the sheet in the width direction discharged through the medium discharge outlet.