Image Forming Apparatus Drawer Exposure Head Impact Absorption
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Solution Overview
Problem
The existing image forming apparatuses face challenges in minimizing the impact transmission to the exposure head when it contacts the main housing, which can lead to potential damage.
Innovation Solution
The apparatus incorporates a mechanism where the exposure head moves between adjacent and spaced positions due to contact with a contact member, allowing the impact to be absorbed and reduced, utilizing levers, springs, and gears to manage the movement and positioning of the exposure head relative to the main housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the exposure head is positioned adjacent to the photosensitive drum for exposure operation, then exposure precision is improved, but impact damage risk increases when the drawer unit moves
Solution Approach 1:
The exposure head is designed to be movable rather than fixed, allowing it to dynamically change position between adjacent (for exposure) and spaced (for impact protection) states based on operational requirements
Solution Approach 2:
A contact member acts as an intermediary mechanism between the drawer unit movement and the exposure head positioning, translating drawer movement into controlled exposure head retraction to absorb impact
2Reliability
If the exposure head moves between adjacent and spaced positions, then impact transmission is reduced, but device complexity increases
Solution Approach 1:
The contact member serves multiple functions: it acts as a mechanical stop, a position sensor trigger, and a movement actuator for the exposure head, reducing the need for separate components
Solution Approach 2:
The system uses the drawer unit's own movement to automatically position the exposure head, eliminating the need for separate motors or actuators dedicated solely to exposure head positioning
Data Source
AI summary
A drawer unit moves in a moving direction between an internal position inside the main housing and an external position outside the main housing. The drawer unit includes a drawer frame, a first exposure head, and a second contact member. The first exposure head moves between a first adjacent position at which the first exposure head is adjacent to the first photosensitive drum and a first spaced position at which the first exposure head is farther spaced away from the first photosensitive drum than at the first adjacent position. The second contact member is a part of the drawer unit other than the first exposure head. The first exposure head moves from the first adjacent position to the first spaced position due to a contact between the first contact member and the second contact member when the drawer unit moves from the internal position to the external position.