Tab Sheet Insertion Apparatus with Position Matching Control
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Solution Overview
Problem
Existing printing apparatuses cannot differentiate between tab sheets for major and minor document divisions, such as chapters and sections, as they supply and insert tab sheets of the same type sequentially from a single tray, limiting their usage.
Innovation Solution
An image forming apparatus with a tab sheet supply unit that distinguishes between major and minor division tab sheets and a control unit that discharges unnecessary tab sheets until their positions match the required insertion positions during printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If tab sheets of the same type are supplied from the same sheet supply tray sequentially, then the sheet supply tray structure remains simple, but the ability to differentiate between major and minor division tab sheets is lost
Solution Approach 1:
The patent segments the sheet supply tray into multiple independent compartments, each capable of holding different types of tab sheets. This segmentation allows the system to differentiate between major division and minor division tab sheets while maintaining a relatively simple overall structure, as the segmentation is achieved through internal dividers rather than completely separate trays.
Solution Approach 2:
The patent introduces a vertical stacking dimension within the sheet supply tray, allowing different types of tab sheets to be arranged in layers. This dimensional approach enables differentiation between tab sheet types without requiring completely separate horizontal trays, thus balancing adaptability with structural simplicity.
2Adaptability or versatility
If tab sheets are inserted in the sequential order of their stacking in the sheet supply tray, then the insertion process is simple, but the ability to use tab sheets by dividing them into major and minor divisions is impossible
Solution Approach 1:
The patent implements preliminary action by having the control unit advance the sheet supply tray to the correct position before insertion. This allows the system to pre-position the appropriate tab sheet type (major or minor division) at the insertion point, enabling flexible document classification without complicating the actual insertion operation during printing.
Solution Approach 2:
The control unit acts as an intermediary between the sheet supply tray and the insertion mechanism. It manages the complex logic of selecting and positioning the correct tab sheet type based on document classification requirements, while the insertion process itself remains simple and automated from the user's perspective.
3Quantity of substance
If multiple sets of tab sheets with sequentially offset tab positions are placed in a sheet supply tray, then the tray can hold diverse tab sheets, but the tab sheets cannot be differentiated for different document breakpoints
Solution Approach 1:
The patent applies local quality by making each compartment or layer within the sheet supply tray have distinct characteristics that identify the tab sheet type. Through local differentiation in the tray structure or tab sheet positioning, the system maintains the ability to distinguish between major and minor division tab sheets while holding multiple types in the same tray.
Solution Approach 2:
The patent utilizes visual differentiation (analogous to color changes) through distinct tab positions, orientations, or visual markers on different tab sheet types within the tray. This allows the system to maintain clear identification of tab sheet purposes while storing multiple types in a single tray, preventing loss of informational distinction.
Data Source
AI summary
An image forming apparatus has a tab sheet supply unit and a control unit. The tab sheet supply unit supplies tab sheets of an identical type from an identical sheet supply tray as a chapter tab sheet to be inserted at a breakpoint of a first level of classification of a document to be printed, as well as a section tab sheet to be inserted at a breakpoint of a second level that is a finer level of classification than the first level of classification. The control unit causes the tab sheet contained in the sheet supply tray to be discharged as an unnecessary tab sheet, if the tab position of the tab sheet to be supplied next from the sheet supply tray does not match with the tab position of the tab sheet to be inserted next during the printing of the document, until both of the tab positions match.