Image Erasing Apparatus Sensor Detection and Media Sorting
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Solution Overview
Problem
Image forming apparatuses with erasable developers face issues with recording media jams due to stapling or non-standard thickness, leading to clogging and damage, which existing detection and conveying methods fail to adequately address.
Innovation Solution
An image erasing apparatus with a sensor group for double-feed and thickness detection, a collecting device to vertically collect non-conveyable media, and a straight-line conveying system that switches direction based on sensor outputs to prevent jams and allow for efficient reuse of media.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If recording medium conveying path is used for stapled or affixed media, then media can be processed, but jams and apparatus damage occur
Solution Approach 1:
The sensor group detects double-feed and thickness abnormalities before the recording medium enters the heating device, allowing the system to prepare for potential jams in advance by diverting problematic media through the switching device to the collecting device, preventing apparatus damage
Solution Approach 2:
The switching device acts as an intermediary between the conveying path and collecting device, routing recording media based on sensor detection results, thereby separating normal media flow from abnormal media handling to prevent jams
2Reliability
If sensor detection and switching device are added, then non-conveyable media can be sorted, but device complexity increases
Solution Approach 1:
The sensor group performs multiple detection functions (double-feed detection and thickness measurement) using integrated sensors, allowing one component to serve multiple purposes and reducing overall system complexity despite enhanced detection capabilities
Solution Approach 2:
The system automatically detects and sorts non-conveyable media through the sensor group and switching device without manual intervention, making the complexity worthwhile by enabling self-service operation and preventing jams
3Productivity
If recording medium is conveyed through heating device, then image erasing is achieved, but non-conveyable media cause jams
Solution Approach 1:
The sensor group detects double-feed and thickness abnormalities before media reaches the heating device, and the switching device pre-diverts problematic media to the collecting device, eliminating jam risks before they can affect heating operations
Solution Approach 2:
The sensor group provides real-time feedback on media conditions (double-feed, thickness) to the control system, which adjusts the switching device to route media appropriately, creating a closed-loop system that prevents jams while maintaining erasing 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
Prevents unnecessary jams and media clogging by efficiently collecting and sorting non-conveyable recording media, ensuring smooth operation and extended apparatus lifespan.
Implementation Method 1
a heating device configured to heat the recording medium to temperature equal to or higher than erasing temperature of developer
Implementation Method 2
a sensor group including a double-feed detection sensor configured to detect double feed of the recording medium and a media sensor configured to detect thickness of the recording medium
Data Source
AI summary
An image erasing apparatus includes: a paper feeding tray configured to feed a recording medium; a sensor group including a double-feed detection sensor configured to detect double feed of the recording medium and a media sensor configured to detect the thickness of the recording medium; a recording-medium collecting device, a collection box, or a discharge box configured to collect the recording medium; and a recording-medium conveying device connecting the paper feeding tray, the sensor group, and the recording-medium collecting device, the collection box, or the discharge box on a straight line.