Drawable Radial Image Reader for Compact Drum Layouts
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Solution Overview
Problem
Existing image forming apparatuses face challenges in efficiently cleaning image reading devices due to their difficult-to-reach positions and limited installation space, which affects maintenance and reading accuracy.
Innovation Solution
The image forming apparatus is designed with radially arranged scanners downstream of the inkjet heads, allowing for easy access and maintenance by moving one scanner to a front position for cleaning, while maintaining a compact layout that includes a thermal insulating support structure to protect optical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the reader is positioned downstream of the image former in a compact layout, then the installation space is reduced, but the reader becomes difficult to reach for cleaning and maintenance
Solution Approach 1:
The reader is designed to be movable along the rotation axis of the drum, transitioning between a retracted position during operation and an extended position for cleaning. This dynamic positioning allows the reader to be compact during image formation while accessible for maintenance, resolving the contradiction between space efficiency and ease of cleaning.
2Adaptability or versatility
If multiple readers are arranged radially to expand image reading range, then the reading coverage is improved, but the device complexity increases
Solution Approach 1:
Multiple readers are arranged radially around the drum to read images at different angular positions. Each reader can independently read images formed at different locations, enabling the system to handle various image sizes and formats with a single integrated structure, thus expanding reading range without proportionally increasing complexity.
Solution Approach 2:
The readers are arranged in a radial configuration around the drum's rotation axis, utilizing the angular dimension to expand image reading coverage. This three-dimensional arrangement allows simultaneous reading of images at multiple angular positions, effectively increasing reading range without requiring linear extension of the device.
3Ease of repair
If the reader is made accessible for cleaning, then the ease of maintenance is improved, but the installation space requirement increases
Solution Approach 1:
The reader is designed with movable components that allow it to extend toward the drum surface for cleaning access while retracting to a compact position during operation. This dynamic design enables easy cleaning of optical components without requiring permanent exposure of the reader, thus maintaining compact installation space while improving maintenance accessibility.
Data Source
AI summary
An image forming apparatus includes a housing having an opening; a drum configured to rotate around a rotation axis to convey a medium in a conveyance direction; an image former configured to form an image on the medium on the drum; and a reader downstream of the image former in the conveyance direction, the reader configured to read the image on the medium formed by the image former. The image former and the reader are radially arranged with respect to the rotation axis of the drum. The reader is drawable from the opening of the housing along the rotation axis of the drum.