Color Erasing Apparatus With Decoupled Conveying Speeds
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Solution Overview
Problem
Existing color erasing apparatuses face performance issues due to the need for different conveying speeds for color erasing and image reading processes, which complicates the design and reduces processing efficiency when space is limited.
Innovation Solution
A color erasing apparatus with separate conveying means for color erasing and reading, allowing for distinct speeds, including a first conveying means for color erasing at a lower speed and a second conveying means for reading at a higher speed, with cooperative rollers and a controller to manage speed transitions, enabling efficient processing and size reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conveying speed is controlled according to the lower color erasing speed to ensure effective color erasing, then the color erasing performance is improved, but the reading performance and overall processing efficiency deteriorate
Solution Approach 1:
The patent divides the conveying system into two independent segments: a first conveying means for color erasing operating at a lower first speed, and a second conveying means for reading operating at a higher second speed. This segmentation allows each segment to optimize its conveying speed according to its specific functional requirements, resolving the contradiction between color erasing reliability and processing efficiency
Solution Approach 2:
The patent implements dynamic speed control by using a controller to switch between different conveying speeds based on the functional section. The conveying speed is dynamically adjusted to match the requirements of each section (lower speed for color erasing, higher speed for reading), thereby optimizing both color erasing performance and overall processing efficiency
2Volume of moving object
If the conveying path is reduced in size to compact the apparatus, then the apparatus size is reduced, but the ability to maintain appropriate conveying speeds for both color erasing and reading deteriorates
Solution Approach 1:
The patent uses dynamic speed control mechanisms that allow the conveying means to adjust speeds based on functional requirements rather than being constrained by fixed physical path lengths. This enables the apparatus to maintain appropriate conveying speeds for both color erasing and reading even in a compact configuration
Solution Approach 2:
The patent changes the operational parameters (conveying speeds) of the system to resolve the contradiction. By allowing different conveying speeds in different sections and directions, the system can optimize performance for both color erasing and reading functions within a reduced apparatus size
3Productivity
If separate conveying means are used for color erasing and reading at different speeds, then processing performance is improved, but the device complexity increases
Solution Approach 1:
The patent implements a conveying system where the same physical conveying mechanism serves multiple functions: it acts as both the first conveying means for color erasing and the second conveying means for reading, depending on the operational mode. This multi-functionality reduces device complexity while maintaining the ability to operate at different speeds for different functions
Solution Approach 2:
The patent uses a controller to dynamically switch the functional role and operating speed of the conveying means based on whether color erasing or reading is being performed. This dynamic reconfiguration allows a single conveying system to replace what would otherwise require separate dedicated conveying systems, thereby reducing overall device complexity
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 allows for improved processing performance by maintaining high reading speeds while ensuring effective color erasing, even in reduced space configurations, by decoupling the conveying speeds and using cooperative rollers to manage sheet flow efficiently.
Implementation Method 1
a color erasing section configured to apply heating processing to a sheet on which an image is formed with an erasable color material and erase a color of the image
Implementation Method 2
an image is formed with an erasable color material and erase a color of the image (the color material) on the sheet
Data Source
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AI summary
According to one embodiment, a color erasing apparatus includes a color erasing section, a first conveying section, a reading section, and a second conveying section. The color erasing section erases a color of an image formed with an erasable color material on a sheet conveyed at first speed. The first conveying section includes a first conveying roller arranged downstream in a sheet conveying direction of the color erasing section and configured to convey the sheet and a first driving section configured to drive the first conveying roller. The first conveying section conveys the sheet, which passes through the color erasing section, at the first speed. The reading section reads an image on the surface of the sheet conveyed at second speed higher than the first speed. The second conveying section includes a second conveying roller arranged upstream in the sheet conveying direction of the reading section and in a position where the second conveying roller nips the conveyed sheet in cooperation and simultaneously with the first conveying roller and a second driving section configured to drive the second conveying roller. The second conveying section conveys the sheet to the reading section as the second speed.