Image Forming Device Dual Power Saving Mode Authentication
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Solution Overview
Problem
Image forming devices in power saving mode face inefficiencies when transitioning from secure print instructions, as the warming up process is prolonged due to the need for identity authentication after releasing the power saving mode, leading to increased power consumption and reduced convenience.
Innovation Solution
The device employs a dual power saving mode system, where upon receiving a secure print instruction, it switches to a second power saving mode that activates only necessary components for authentication, and upon successful authentication, it transitions to a print mode, reducing overall power consumption and shortening the time to print.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the power saving mode is released before warming up starts during secure print, then the warming up can begin earlier, but power is wasted maintaining warmed state during authentication process
Solution Approach 1:
The power saving mode is divided into two distinct modes: first power saving mode (deeper sleep) and second power saving mode (lighter sleep). When secure print is detected, the system transitions from first power saving mode to second power saving mode, where authentication-related circuits remain active while image forming circuits stay dormant. This segmentation allows authentication to proceed without wasteful warming up, and warming up only begins after successful authentication.
2Use of energy by moving object
If the device operates in first power saving mode during secure print authentication, then power consumption is restricted, but the time required for printing out increases
Solution Approach 1:
The system dynamically transitions between different power saving modes based on the authentication state. During authentication, the system operates in second power saving mode with lower power consumption. After successful authentication, it transitions to print mode where warming up begins. This dynamic adaptation optimizes both power consumption and printing time based on real-time operational requirements.
3Productivity
If warming up is performed while authentication is pending, then printing can start sooner, but unnecessary power is consumed during authentication
Solution Approach 1:
The system performs preliminary authentication in the second power saving mode before initiating warming up. Only after authentication succeeds does the system transition to print mode and start warming up. This preliminary action sequence ensures that power-intensive warming up operations are performed only when necessary, eliminating energy waste during the authentication phase while maintaining fast printing capability.
Data Source
AI summary
An image forming device can operate in a print mode, a first power saving mode, and a second power saving mode. In the print mode, a first circuit having a unit to acquire the state of the image forming device and a second circuit are both activated. In the first power saving mode, neither the first circuit nor the second circuit is activated. In the second power saving mode, only the first circuit is activated. When a secure print instruction is received in the first power saving mode, the operation mode is switched to the second power saving mode. When the identity of the user is authenticated in the second power saving mode, the operation mode is switched to the print mode. Accordingly, it is possible to provide the image forming device which can restrict power consumption and also reduce the time required for printing out after the identity authentication.