Printing Apparatus Status Indication via Detection Units
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Solution Overview
Problem
Existing printing apparatuses lack user-friendliness in determining whether a rolled print medium is fed and in a printable state, leading to potential misoperations and paper jams.
Innovation Solution
A printing apparatus equipped with detection units to verify if the print medium is fed to a printable position and display units indicating the feed state, allowing users to easily recognize the print medium's status through lighting portions on the operation panel, preventing accidental opening of doors during printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a rolled print medium is set in the printing apparatus without clear status indication, then the apparatus can operate, but the user cannot easily recognize whether the print medium is being fed in a printable state
Solution Approach 1:
The patent employs lighting portions that change color or illumination state to indicate the feed status of rolled print media. Different lighting states (e.g., illuminated vs. unilluminated, different colors) correspond to different feed statuses, enabling users to quickly recognize whether the print medium is in a printable state without physically accessing the apparatus.
Solution Approach 2:
The patent introduces lighting portions as an intermediary visual indicator between the print medium feed mechanism and the user. These lighting portions are controlled by the control unit based on detection of print medium presence and feed status, serving as a mediator that translates mechanical feed states into visible information for the user.
2Productivity
If multiple rolled print media are set in different set units, then printing capacity increases, but it becomes difficult to track which specific medium is fed and printable
Solution Approach 1:
The patent divides the printing apparatus into multiple independent set units (first set unit, second set unit, etc.), each with its own lighting portion and control. This segmentation allows each rolled print medium to be independently tracked and indicated, enabling the system to maintain high printing capacity while providing individual status information for each medium type.
Solution Approach 2:
Each set unit is equipped with its own dedicated lighting portion that provides localized status indication specific to that unit's print medium. This local quality approach ensures that status information is provided at the specific location where the print medium is loaded, making it easy for users to identify which specific medium is fed and printable without confusion between multiple media types.
3Device complexity
If the apparatus operates without real-time feed status detection, then device complexity is reduced, but paper jams and misoperations increase
Solution Approach 1:
The patent implements a feedback mechanism where the control unit continuously monitors the feed status of rolled print media through detection and provides real-time status information through lighting portions. This feedback loop enables the system to detect feed status changes and notify users immediately, preventing paper jams and misoperations while maintaining relatively simple device architecture.
Data Source
AI summary
A printing apparatus includes a plurality of set units to set rolled print media, a conveyance unit to convey the print media, a printing unit, a detection unit, and display units. The printing unit prints an image on the print media conveyed by the conveyance unit. The detection unit detects whether any one of the print media is fed to a predetermined printable position at which printing is performable by the printing unit. Each display unit is provided on a different one of the plurality of set units and configured to indicate whether a print medium set in a corresponding set unit is being fed. When the printing unit performs printing on the print medium, each display unit indicates whether the print medium set in the corresponding set unit is being fed in accordance with a result of detection performed by the detection unit.