Printer Guide Unit for Easy Separation Roller Replacement
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Solution Overview
Problem
Existing printing apparatuses require laborious operations to replace worn-out separation members, such as separation rollers, due to cumbersome exterior cover opening procedures, which affects print media separation performance.
Innovation Solution
A printing apparatus design that allows for easy replacement of separation rollers by detachably attaching a guide unit, which includes the separation rollers, through simplified attachment and detachment mechanisms, enabling quick replacement without opening the exterior cover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the separation roller is replaced by opening the exterior cover and detaching the roller attachment unit, then the separation roller can be replaced, but the operation becomes cumbersome and laborious
Solution Approach 1:
The roller attachment unit is divided into separable components: the guide unit (which includes the separation roller) and the roller attachment unit proper. This segmentation allows the guide unit to be easily detached and reattached without complex disassembly procedures, resolving the contradiction by making replacement simple while maintaining structural integrity
Solution Approach 2:
The guide unit containing the separation roller is extracted as a removable component from the main printer body. This extraction allows users to replace the separation roller by simply removing and reattaching the guide unit, eliminating the need to open the exterior cover and perform complex disassembly operations
2Reliability
If the separation member is worn down due to friction with print media, then the separation performance decreases, but replacement requires complex operations
Solution Approach 1:
The design enables users to perform maintenance themselves by simply detaching and reattaching the guide unit. This self-service capability ensures that separation performance is maintained through easy user-replaceable components without requiring technical expertise or complex procedures
Solution Approach 2:
The guide unit is pre-configured with the separation roller and attachment mechanisms before being installed in the printer. This preliminary preparation allows for quick replacement without requiring users to assemble complex components during maintenance, ensuring both reliability and ease of operation
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
A printing apparatus (1) includes a main body (2), a printing unit (10) to print an image on a print medium, a loading unit (20,30) to load multiple print media, a feeding roller (61) to feed the print media loaded on the loading unit, a guide unit (70) configured to be detachable from the main body and form a part of a conveyance path for conveying the print media from the feeding roller to the printing unit, and a separation member (62, 63) detachably held by the guide unit and configured to separate one of multiple print media from the others in a case where the multiple print media are fed by the feeding roller. The guide unit includes at least one restriction unit configured to be moved by an operation portion between positions where the restriction unit is engaged with and disengaged from the main body.