Exposure Unit Guide Slots for Independent Photoconductor Replacement
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Solution Overview
Problem
Existing image forming apparatuses face disadvantages in environmental load and economic efficiency due to the need to replace both photoconductors and exposure units simultaneously, even if only the photoconductor needs replacement.
Innovation Solution
An image forming apparatus with a support frame that allows exposure units to be precisely positioned and fixed relative to photoconductors using guide slots, enabling independent replacement of photoconductors without necessitating the replacement of exposure units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If exposure units are fixedly located relative to photoconductors using locating pins and fastening screws, then positioning precision is improved, but replacement complexity increases because both components must be replaced together
Solution Approach 1:
The invention divides the exposure unit and photoconductor into separable components. The exposure unit can be independently positioned and fixed to the support frame using locating pins and guide slots, while the photoconductor remains a separate replaceable component. This segmentation allows the exposure unit to be retained and reused when only the photoconductor needs replacement, resolving the contradiction between positioning precision and replacement complexity.
Solution Approach 2:
The support frame serves as an intermediary structure that independently supports both the exposure unit and the photoconductor. By providing separate mounting mechanisms (locating pins for the exposure unit, and separate positioning for the photoconductor), the support frame enables precise positioning of the exposure unit while allowing independent replacement of the photoconductor, thus resolving the contradiction.
2Manufacturing precision
If exposure units are fixedly located relative to photoconductors, then exposure regulation is improved, but environmental load increases due to unnecessary replacement of functional exposure units
Solution Approach 1:
The invention segments the exposure unit and photoconductor into independently replaceable components. The exposure unit is fixed to the support frame with precise locating pins and guide slots for proper positioning, while the photoconductor can be independently removed and replaced. This allows the functional exposure unit to be retained and reused, reducing waste and environmental load while maintaining precise exposure regulation.
Solution Approach 2:
The invention enables recovery and reuse of the exposure unit by separating it from the photoconductor. When the photoconductor wears out, only the photoconductor is discarded and replaced, while the exposure unit is recovered and retained for continued use. This selective replacement approach reduces material waste and environmental impact while preserving the precisely positioned exposure unit.
3Manufacturing precision
If exposure units are fixedly located relative to photoconductors, then exposure precision is improved, but economic efficiency decreases due to higher replacement costs
Solution Approach 1:
The invention segments the exposure unit and photoconductor into separate replaceable components mounted on a common support frame. The exposure unit is precisely positioned using locating pins and guide slots, while the photoconductor can be independently replaced. This segmentation allows costly exposure units to be reused multiple times, improving economic efficiency by avoiding unnecessary replacements while maintaining exposure precision through the precise locating mechanism.
Solution Approach 2:
The invention enables economic recovery of the exposure unit by separating it from the photoconductor. When replacement is needed, only the less expensive photoconductor is discarded and replaced, while the more expensive exposure unit is recovered and reused. This selective replacement strategy improves economic efficiency by minimizing replacement costs while maintaining precise exposure through the retained exposure unit.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration allows for accurate and secure positioning of exposure units relative to photoconductors, reducing unnecessary replacements and improving environmental and economic efficiency by enabling independent maintenance of photoconductors.
Implementation Method 1
a plurality of light-emitting parts being arranged in each exposure unit and configured to expose the photoconductor to light
Data Source
AI summary
In an image forming apparatus, a support frame configured to support a plurality of cartridges each including a photoconductor is allowed to be pulled out from a casing of the apparatus. A plurality of light-emitting parts configured to expose a corresponding photoconductor to light is arranged in each exposure unit which is movable between an exposure position proximate to the corresponding photoconductor and a retreating position away from the photoconductor. A pair of side plates of the support frame, which extends in a direction perpendicular to a main direction in which the light-emitting parts are arranged, has guide slots formed therein, each of which is configured to guide movement of a corresponding exposure unit between its exposure and retreating positions. Each guide slot includes a positioning portion configured to position the exposure unit in position in a subordinate direction perpendicular to the main direction and to an exposure direction.