Separating Nonvolatile Memory From Main Board To Preserve Correction Parameters
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Solution Overview
Problem
Existing image forming devices require costly and complex re-determination and re-storage of correction parameters when non-volatile memory or main board components are replaced, leading to potential errors in image quality due to uneven rotational speeds.
Innovation Solution
Separating the storage of correction parameters from the adjusting unit on different boards, allowing for independent replacement and maintenance of components without re-determining the correction parameters, thus simplifying repairs and maintaining image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the non-volatile memory is mounted on the main board, then the correction parameter can be stored reliably, but when there is a trouble with the main board other than the non-volatile memory, the non-volatile memory is forced to be replaced together, requiring re-determination of the correction parameter
Solution Approach 1:
The patent divides the main board into two separate boards: one dedicated to storing the correction parameter (non-volatile memory board) and another for other functions. This segmentation allows the correction parameter to be preserved when other components fail, eliminating the need for re-determination during repairs and reducing maintenance complexity.
2Manufacturing precision
If the correction parameter is re-determined after replacing the non-volatile memory, then the image quality can be maintained, but the image forming device has to be retrieved and serious fixing is required
Solution Approach 1:
The correction parameter is pre-determined during manufacturing and stored in a dedicated non-volatile memory board that is separate from the main board. This preliminary action ensures that the correction parameter remains intact during routine repairs, eliminating the need for re-determination and reducing fixing complexity while maintaining image quality.
3Ease of repair
If the main board is replaced due to troubles other than the non-volatile memory, then the device can be fixed, but the correction parameter has to be re-determined and stored on a new non-volatile memory
Solution Approach 1:
The patent separates the non-volatile memory containing the correction parameter from the main board. This segmentation ensures that when the main board is replaced for other reasons, the correction parameter remains preserved in the separate non-volatile memory board, eliminating time-consuming re-determination processes and simplifying repairs.
Data Source
AI summary
An image forming device includes a rotational body configured such that an image to be transferred onto a sheet is formed in an image forming position thereon, a storage configured to store thereon, in a non-volatile manner, a correction parameter for canceling a deviation of the image forming position caused due to unevenness of a rotational speed of the rotational body, an adjusting unit configured to adjust the image forming position by controlling at least one of the rotational speed of the rotational body and timing of forming the image on the rotational body, based on the correction parameter, a first board loaded with the storage, and a second board loaded with the adjusting unit, the second board being provided separately from the first board.