Image Forming System Purge Tray Segmentation
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Solution Overview
Problem
Existing image forming systems fail to efficiently separate and eject retention paper sheets from specific paper sheet feeding trays during purge processing, leading to contamination and waste of valuable papers like pigment coated or gloss papers, which are not reused due to mingling with other sheets.
Innovation Solution
The system includes a control section that manages paper sheet feeding, forming, and ejecting processes, allowing retention paper sheets to be ejected separately based on their original feeding trays, ensuring specific papers like insertion sheets are handled independently and not contaminated by unfixed toner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If retention paper sheets are collectively ejected into a single tray during purge processing, then the purge operation is simple and fast, but valuable papers like pigment coated or gloss papers become contaminated with unfixed toner and cannot be reused
Solution Approach 1:
The patent divides the ejection destination into multiple trays based on the original feeding tray of each retention paper sheet. The control section identifies which tray each retention sheet came from and directs it to the corresponding ejection tray, thereby segmenting the ejection process to prevent contamination of valuable papers while maintaining efficient automated operation.
2Ease of operation
If all retention paper sheets are ejected together regardless of their source tray, then the ejection process is simplified, but specific papers like insertion sheets cannot be separated and are contaminated by other sheets
Solution Approach 1:
The control section uses feedback from paper sheet information (tray identification data) to dynamically control the ejection process. By monitoring which tray each retention sheet originated from and adjusting the ejection destination accordingly, the system maintains automated operation while ensuring accurate separation of different paper types.
3Productivity
If retention paper sheets from different feeding trays are mixed and ejected together, then the purge processing is efficient, but the integrity of valuable papers is compromised due to contamination
Solution Approach 1:
The patent segments the ejection process by creating a correspondence between feeding trays and ejection trays. Each retention paper sheet is directed to the ejection tray corresponding to its feeding tray, maintaining paper integrity while preserving automated purge processing efficiency through controlled separation.
Data Source
AI summary
When implementing a purge processing for collecting a retention paper sheet remaining within an image forming system so as to eject the collected retention paper sheet to a plurality of paper sheet ejecting trays of a paper sheet ejecting section, based on paper sheet information regarding a paper sheet feeding tray from which each of the retention paper sheets is fed, a control section controls the paper sheet ejecting section so as to eject the retention paper sheets onto the plurality of paper sheet ejecting trays, in such a manner that a first retention paper sheet fed from a specific paper-sheet feeding tray is ejected separately from a second retention paper sheet fed from a paper sheet feeding tray other than the specific paper-sheet feeding tray.