Image Forming Apparatus Mode Toggle via Cover Closure
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Solution Overview
Problem
Conventional image forming apparatuses waste power by toggling from energy conservation mode to image formation mode when the opening/closing member, typically used for restocking printer sheets, is opened, leading to prolonged standby periods and increased power consumption.
Innovation Solution
An image forming apparatus that toggles from energy conservation mode to image formation mode when the opening/closing member is closed, utilizing a constantly-energized control unit and non-constantly-energized image forming units, reducing the time spent in image formation mode and thus minimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the energy conservation mode is toggled to image formation mode when the opening/closing member is opened, then the operability of the image forming apparatus is improved, but the power consumption increases because printing is not performed for a while after the mode toggle
Solution Approach 1:
The patent inverts the conventional trigger condition for mode toggling. Instead of switching from energy conservation mode to image formation mode when the opening/closing member is opened (conventional approach), the patent switches modes when the opening/closing member is closed. This inversion ensures that the apparatus remains in energy conservation mode during the period when the user is performing maintenance tasks (when the cover is open), and only transitions to image formation mode when the user finishes and closes the cover, thereby eliminating wasteful power consumption during standby periods.
2Adaptability or versatility
If the opening/closing member is opened to expose the internal mechanism, then the user can perform maintenance work such as restocking printer sheets, but printing is not performed for a while after opening, resulting in wasteful power consumption
Solution Approach 1:
The patent employs feedback control by continuously monitoring the state of the opening/closing member and using this information to dynamically adjust the operational mode of the apparatus. When the control unit detects that the opening/closing member is in the closed position, it determines that maintenance work is complete and transitions from energy conservation mode to image formation mode. This feedback mechanism ensures that power consumption is optimized by maintaining energy conservation mode during maintenance activities while automatically switching to operational mode when ready to print.
Data Source
AI summary
An image forming apparatus capable of toggling between image formation mode and energy conservation mode, the image formation mode allowing image formation on a recording medium, and the energy conservation mode having power consumption lower than that of the image formation mode, the image forming apparatus including: a constantly-energized portion that is energized both in the image formation mode and the energy conservation mode; a non-constantly-energized portion that is energized only in the image formation mode; and an opening/closing member capable of exposing an internal mechanism held inside a casing of the image forming apparatus, in which the constantly-energized portion toggles from the energy conservation mode to image formation mode when the opening/closing member is closed from an opened state in the energy conservation mode.