Image Forming Apparatus Skipping Second Preparation Operation
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Solution Overview
Problem
Conventional image forming apparatuses experience prolonged waiting times when an image formation request occurs during the first preparation operation, as they require completing both the first and second preparation operations before transitioning to an image forming state.
Innovation Solution
The apparatus skips the second preparation operation when an image formation request is made during the first preparation operation, allowing it to transition directly to the image forming state after completing the first preparation operation, thereby shortening the waiting time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the apparatus completes both the first preparation operation and the second preparation operation before transitioning to the image forming state, then the image forming conditions are properly adjusted, but the waiting time is prolonged
Solution Approach 1:
The first preparation operation performs preliminary adjustments of image forming conditions (such as heating the fixing unit, rotating the photosensitive drum and intermediate transfer body at target speeds, and adjusting development conditions) in advance. When an image formation request occurs during this operation, the apparatus can directly transition to the image forming state after the first preparation completes, without waiting for the second preparation operation, thereby reducing waiting time while maintaining proper image forming conditions.
2Adaptability or versatility
If the apparatus performs the second preparation operation when an image formation request occurs during the first preparation operation, then the color mode is properly configured, but the waiting time is extended
Solution Approach 1:
The apparatus dynamically determines whether to perform the second preparation operation based on the current operational state. When an image formation request occurs during the first preparation operation, the control unit determines that the second preparation operation is unnecessary and skips it, allowing direct transition to image forming. This dynamic decision-making optimizes the balance between proper color mode configuration and minimizing waiting time.
Data Source
AI summary
An image forming apparatus performs a first preparation operation in a full color mode when power is supplied. The apparatus performs, when an image formation request is inputted after the first preparation operation completes, a second preparation operation in a designated color mode in accordance with the image formation request. When an image formation request is inputted during the first preparation operation, the apparatus skips the second preparation operation and performs image formation after the first preparation operation completes.