Upstream Downstream Heating Rollers Ink Drying
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Solution Overview
Problem
Drying devices with multiple heating rollers face challenges in efficiently supplying heat to recording media, particularly in maintaining optimal heat supply without shortening the lifespan of halogen lamps, especially when dealing with varying sheet widths and preventing excessive temperature rise in non-sheet-passing areas.
Innovation Solution
The drying device employs upstream and downstream heating rollers with distinct heat source configurations, where upstream rollers use two halogen lamps with different light emitting ranges to ensure consistent heat supply and prevent temperature rise, while downstream rollers use a single halogen lamp with a specific light emitting range to maintain efficient heating without excessive power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If upstream heating rollers use high-power halogen lamps to supply sufficient heat to recording media, then heat supply adequacy is improved, but halogen lamp lifespan is shortened
Solution Approach 1:
The heating system is segmented into multiple heating rollers (first, second, third, fourth heating rollers) distributed along the conveyance direction. Each roller independently supplies heat to different sections of the recording medium, allowing the load to be distributed across multiple lamps rather than concentrating high power demands on single lamps, thereby extending their operational lifespan while maintaining adequate heat supply.
Solution Approach 2:
Different heating rollers are positioned to address specific thermal needs at different locations along the recording medium path. The upstream heating rollers (first and second) provide intensive heating where the medium enters, while downstream rollers (third and fourth) provide supplementary heating and temperature maintenance, creating a graduated heat distribution that optimizes both effectiveness and lamp durability.
2Productivity
If heating rollers continuously operate at high temperature to ensure adequate drying, then drying efficiency is improved, but energy consumption increases
Solution Approach 1:
The heating rollers operate in a coordinated periodic manner based on recording medium detection. When a recording medium is detected, the heating rollers activate to provide necessary heat. When no medium is present, the heating rollers reduce or cease operation. This periodic activation pattern maintains high drying efficiency during operation while significantly reducing energy consumption during idle periods.
Solution Approach 2:
The heating rollers are positioned and configured to provide preliminary heating to the recording medium as it enters the drying装置. The upstream heating rollers (first and second) initiate the drying process early in the conveyance path, allowing downstream rollers to maintain rather than generate maximum heat, thereby reducing overall energy requirements while maintaining drying efficiency.
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 configuration allows for reliable and efficient heat supply to recording media of varying widths, preventing heat shortages in upstream rollers and excessive temperature rises, while minimizing power consumption and extending halogen lamp lifespan.
Implementation Method 1
Each of the upstream heating rollers includes an upstream heat source. Each of the downstream heating rollers includes a downstream heat source. The upstream heat source and the downstream heat source have different configurations.
Data Source
AI summary
A drying device including multiple heating rollers to dry a recording medium wound around the heating rollers while conveying the recording medium is provided. The heating rollers include upstream heating rollers and downstream heating rollers, disposed on an upstream side and a downstream side, respectively, relative to a direction of conveyance of the recording medium. Each of the upstream heating rollers includes an upstream heat source. Each of the downstream heating rollers includes a downstream heat source. The upstream heat source and the downstream heat source have different configurations. The upstream heat source has a maximum amount of current greater than that of the downstream heat source.