Latent Image Writing Unit Positioning and Shock Absorption
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Solution Overview
Problem
Existing image forming apparatuses face reduced writing position accuracy due to jolting of the latent image writing unit, which causes errors in relative positions with respect to the latent image-carrying members, leading to issues like image blurring and color misalignment during maintenance operations.
Innovation Solution
Incorporating a holding unit with a turning axis, a positioning unit, a biasing unit to precisely position the latent image writing unit, and a shock absorbing unit to absorb shocks when moving between positions, ensuring accurate positioning and reducing warping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the opening and closing cover is used to support the latent image writing unit, then maintainability of the latent image-carrying members and peripheral devices is enhanced, but the cover jolts against the fixed cover causing errors in relative positions and reducing writing position accuracy
Solution Approach 1:
A shock absorbing unit is introduced as an intermediary between the opening and closing cover and the fixed cover to absorb the shock generated when the cover is closed, preventing the shock from affecting the relative position between the latent image writing unit and the latent image-carrying members, thus maintaining writing position accuracy while preserving maintainability
Solution Approach 2:
The shock absorbing unit provides beforehand cushioning by being pre-installed to absorb the shock that will occur during closing operation, preventing the shock from causing position errors before they can affect the writing accuracy
2Manufacturing precision
If the standard position member is caused to touch the positioning unit with a biasing unit, then the position of the latent image writing unit can be precisely decided, but forceful closing increases shock and causes significant warping of the cover and position member
Solution Approach 1:
The shock absorbing unit is installed beforehand to cushion the shock that occurs during closing, preventing the excessive shock from causing warping of the opening and closing cover and standard position member, thereby maintaining both positioning accuracy and structural stability
Solution Approach 2:
The shock that would normally cause harmful warping is converted into a beneficial cushioned impact by the shock absorbing unit, which dissipates the energy in a controlled manner, transforming the harmful shock into a harmless closing action that maintains structural integrity
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
The solution enhances writing position accuracy by precisely positioning the latent image writing unit and absorbing shocks, thereby reducing the occurrence of image blurring and color misalignment during maintenance, while maintaining compactness and operability of the apparatus.
Implementation Method 1
a shock absorbing unit configured to absorb a shock that is received by the holding unit and the latent image writing unit when the holding unit is moved from the opening position to the closing position
Implementation Method 2
a biasing unit configured to bias the latent image writing unit and cause the latent image writing unit to make a contact with the positioning unit
Data Source
AI summary
A holding unit turns, while holding a latent image writing unit, centered on a turning axis that is arranged on a main body of an image forming apparatus between an opening position and a closing position with respect to the main body. A positioning unit arranged on the main body positions the latent image writing unit with respect to the image carrier, when the holding unit is at the closing position. A biasing unit biases the latent image writing unit to make a contact with the positioning unit. A shock absorbing unit absorbs a shock received by the holding unit and the latent image writing unit when the holding unit is moved from the opening position to the closing position.