Ring Bookbinding Image Forming System Last Page Control
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Solution Overview
Problem
In image forming systems with ring bookbinding, the need to wait for complete original document reading before initiating image formation leads to low productivity due to exposure of the spine portion on the surface, resulting in a poor appearance and increased processing time.
Innovation Solution
An image forming system with a judging section that determines if an image is present on the last page, allowing immediate feeding and image formation if no image is detected, and complete data acquisition before forming on the last page if an image is present, thereby controlling the sheet feeding and image forming processes to minimize processing time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system waits for complete original document reading before initiating image formation, then the spine portion is properly covered and appearance is maintained, but processing time increases and productivity decreases
Solution Approach 1:
The system performs preliminary actions by feeding the last sheet first before completing original document reading, and initiates image formation on previously read sheets. This allows the spine portion to be covered in advance while image formation proceeds parallel to remaining data acquisition, resolving the contradiction between appearance quality and processing speed
Solution Approach 2:
The system maintains continuous useful action by overlapping original document reading, image formation, and sheet feeding operations. While the last sheet is being fed and positioned to cover the spine, image formation continues on other sheets using already-acquired data, ensuring no idle time and maintaining aesthetic appearance simultaneously
2Productivity
If image formation is initiated before complete data acquisition, then processing time is reduced and productivity increases, but the spine portion may remain exposed resulting in poor appearance
Solution Approach 1:
The system takes preliminary action by feeding and positioning the last sheet before complete data acquisition is finished. This ensures the spine portion will be covered when bookbinding occurs, while image formation on other sheets uses data already read during the parallel operation period
Solution Approach 2:
The system inverts the conventional sequence by feeding the last sheet first rather than last. This reversal allows the last sheet to be positioned in advance to cover the spine portion, while image formation proceeds on other sheets using previously acquired data, achieving both speed and appearance quality
Data Source
AI summary
An image forming system includes: a ring bookbinding section which perform a ring bookbinding to a bundle of sheets by using a binder provided with a spine portion and a plurality of finger portions; and a judging section, wherein a last page is firstly fed immediately after job initiation and, subsequently after having fed the last page, image formation based on the image data is initiated, when the judging section judges that an image is not formed on the last page, and wherein all of the image data is firstly acquired completely after job initiation, subsequently the last page is fed and formed image thereon, and then image formation of remaining pages is carried out, when the judging section judges that image is formed on the last page.