Sheet Post-Processing Apparatus Sliding Units for Compact Sheet Removal
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Solution Overview
Problem
Conventional sheet post-processing apparatuses face challenges in removing remaining sheets and managing limited space within image forming apparatuses, leading to safety concerns and inefficiencies due to the need for specific slide mechanisms that compromise compactness and safety during sheet handling.
Innovation Solution
A sheet post-processing apparatus with a configuration of first, second, and third units that allow for parallel alignment and coupling, enabling the second and third units to be pulled out in the sheet carrying-out direction, providing clearance and inhibiting shifts, and utilizing guide plates and transport rollers to facilitate safe and efficient sheet removal and processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the staple unit is pulled out in the direction perpendicular to the sheet carrying-out direction to remove remaining sheets, then the remaining sheets can be accessed, but the apparatus structure becomes complex and compactness is compromised
Solution Approach 1:
Instead of pulling the staple unit perpendicular to the sheet carrying-out direction as in conventional designs, this invention pulls the staple unit in the sheet carrying-out direction (the same direction sheets are transported). This inversion of the extraction direction simplifies the slide mechanism structure while maintaining the ability to access and remove remaining sheets from the transport path.
2Ease of operation
If the punch unit is pulled out to create clearance for sheet removal, then sheets can be accessed, but the apparatus loses compactness and requires additional space
Solution Approach 1:
The staple unit serves multiple functions: it performs stapling operations during normal processing and acts as a removable component for accessing remaining sheets. By making the staple unit slidable in the sheet carrying-out direction, it combines the sheet processing function with the sheet removal access function, eliminating the need for separate mechanisms for each purpose.
3Volume of moving object
If units are fixed in position to maintain compactness, then space is optimized, but safety during sheet handling is reduced
Solution Approach 1:
The staple unit is designed to be dynamically slidable in the sheet carrying-out direction rather than being completely fixed. This dynamic design allows the unit to move when needed for sheet removal while maintaining a compact configuration during normal operation, thus balancing compactness with operational safety and flexibility.
Data Source
AI summary
A sheet post-processing apparatus includes a first unit having a guide device for guiding a sheet, a second unit having a first post-processing device for performing post-processing on the sheet, and a third unit having a second post-processing device for loading sheets and performing post-processing on the sheets in bunch form placed on the processing tray. A first coupling device is provided for coupling the first unit and at least one of the second and third units. A second coupling device is provided for coupling the second unit and the third unit. The second unit and the third unit are capable of being pulled out in the sheet carrying-out direction with respect to the first unit by releasing the first coupling device. The entire or front side of the second unit is shiftable to the first unit side with respect to the third unit by releasing the second coupling device.