Detachable Guide Frame for Duplex Printer Jam Access
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Solution Overview
Problem
Conventional duplex printing apparatuses face difficulties in accessing and eliminating paper jams due to the paper being hidden by the flapper and discharging roller, making it hard to resolve jams during the printing process.
Innovation Solution
A duplex printing apparatus with a detachable guide frame that supports the flapper and discharging roller, allowing for easy access and removal of jams by converting the conveyance path and providing a flexible coupling mechanism for easy installation and removal, enabling the user to expose the fixing part for jam clearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the flapper and discharging roller are fixedly combined with the main body housing, then the structural stability is improved, but the accessibility for paper jam elimination deteriorates
Solution Approach 1:
The guide frame is divided into an upper guide frame part and a lower guide frame part that can be detached from each other. The discharging roller is rotatably supported by the lower guide frame part, which itself is detachably disposed in the main body housing. This segmentation allows the discharging roller and flapper to be accessed by removing only the lower guide frame part, rather than disassembling the entire apparatus.
Solution Approach 2:
The discharging roller is configured to be rotatable on the conveyance path, and the lower guide frame part supporting it is made detachable. This dynamic configuration allows the system to transition from a fixed state during normal operation to an accessible state when paper jams occur, enabling easy removal of jammed paper without compromising structural stability during printing.
2Stability of the object's composition
If the discharging roller is fixedly combined with the fixing part, then the structural stability is improved, but the ease of repair and maintenance deteriorates
Solution Approach 1:
The guide frame is segmented into upper and lower parts, with the discharging roller supported by the lower part. This lower guide frame part is detachably disposed in the main body housing, allowing it to be removed independently for maintenance purposes. This segmentation enables easy access to the discharging roller and fixing part for cleaning and maintenance without disassembling the entire apparatus.
Solution Approach 2:
The detachable lower guide frame part enables users to perform simple maintenance tasks such as removing jammed paper and cleaning the discharging roller area without requiring professional service or complex disassembly. The design allows end-users to maintain the apparatus themselves through simple detachment and reattachment operations.
Data Source
AI summary
A duplex printing apparatus having a main body housing, an image forming part accommodated in the main body housing for forming images, a fixing part for supplying heat and pressure to a paper, and a duplex printing part to reverse the paper passing through the fixing part on a conveyance path and to guide the paper to the image forming part for duplex printing. The duplex printing apparatus further includes a flapper to convert the conveyance path of the paper according to whether a duplex printing operation is set, a discharging roller to discharge the paper from the fixing part, and a guide frame comprising a flapper supporting part to rotatably support the flapper, a discharging roller supporting part to rotatably support the discharging roller, and a guide part to guide the paper, and which is detachably disposed between the fixing part and the duplex printing part in the main body housing for easy removal to provide access to paper jams.