Image Forming Communicator Return Logic for Quiet Wake-Up
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Solution Overview
Problem
Image forming apparatuses with power saving mode transition functions generate large operation sounds during mode transitions, leading to uncomfortable user experiences and wasteful print preparation operations, especially when returning from a power saving state.
Innovation Solution
The apparatus includes a communicator that transitions to a silent return state upon receiving communication data based on a first standard (e.g., NFC) and then to a normal return state upon receiving a normal return request based on a second standard (e.g., Wi-Fi), reducing unnecessary print preparation operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the image forming apparatus performs print preparation operation when returning from power saving mode, then the apparatus ensures proper initial position and operability, but a large operation sound is generated making users uncomfortable
Solution Approach 1:
The return from power saving mode is segmented into two distinct states: silent return state (for communication operations like scanning) and normal return state (for printing operations). This segmentation allows the apparatus to perform different preparation operations based on the specific return condition, thereby reducing unnecessary loud operations while maintaining reliability for actual printing tasks.
Solution Approach 2:
The apparatus dynamically adjusts its return behavior based on the communication standard detected during power saving mode. When NFC communication is detected, it transitions to silent return state; when Wi-Fi communication is detected, it transitions to normal return state. This dynamic adaptation allows the system to optimize both sound level and functionality based on actual usage scenarios.
2Reliability
If the image forming apparatus always performs print preparation operation after returning from power saving state, then the apparatus ensures readiness for printing, but wasteful print preparation operation occurs for jobs not accompanied by printing
Solution Approach 1:
The return process is segmented into communication-based silent return state and printing-based normal return state. This segmentation enables the apparatus to perform preparation operations only when necessary (for printing jobs) while maintaining readiness for communication-based jobs (scanning, copying) without wasteful full printing preparation.
Solution Approach 2:
The apparatus changes the preparation operation parameter based on the detected communication standard. For NFC communication, it uses silent return parameters (minimal preparation); for Wi-Fi communication, it uses normal return parameters (full preparation). This parameter adaptation eliminates wasteful energy consumption while ensuring printing readiness when needed.
3Speed
If the image forming apparatus transitions to normal mode immediately from power saving mode, then the apparatus responds quickly to user needs, but unnecessary print preparation operation is performed causing noise and energy waste
Solution Approach 1:
The apparatus performs preliminary detection of communication standards while still in power saving mode, before fully transitioning to operational state. This preliminary action allows the system to pre-determine whether silent return or normal return is needed, enabling fast response while avoiding unnecessary loud operations through advance planning.
Solution Approach 2:
The transition from power saving mode is made dynamic and conditional rather than immediate. The apparatus waits for communication standard detection results before finalizing the return state, allowing quick response to user needs while adapting the preparation operation level to prevent noise and energy waste.
Data Source
AI summary
An image forming apparatus comprises, when a communicator receives communication data based on a first communication standard determined in advance from a terminal device in a power saving state, a power supply controller causes the communicator to transition from the power saving state to a silent return state and then causes the communicator to establish connection with the terminal device based on a second communication standard determined in advance, and when the communicator receives a normal return request determined in advance and related to communication based on the second communication standard in the silent return state, the power supply controller causes the communicator to transition from the silent return state to the normal return state.