Selective Power Supply for Printing Apparatus Startup Time
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Solution Overview
Problem
Conventional image processing apparatuses face issues with incomplete power shutdown due to standby states caused by increased software complexity, leading to potential failures during remote control shutdown operations.
Innovation Solution
An image processing apparatus and method that determine whether to shift to a full power OFF state or a quick OFF state based on received instructions, allowing for complete power shutdown or partial energization to reduce startup time, using a determination unit and control unit to manage power supply accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the apparatus uses a standby state with part of the controller energized to reduce startup time, then the startup time is reduced, but the power source is not completely turned off which may cause apparatus failure
Solution Approach 1:
The system dynamically adjusts the power state based on the shutdown source: local shutdowns activate the standby state with controller energized for quick restart, while remote shutdowns trigger complete power cutoff for safety. This dynamic behavior resolves the contradiction by adapting the power management strategy to the specific operational context.
Solution Approach 2:
The invention changes the power supply parameter (energized vs. completely off) based on the shutdown instruction source. When shutdown is initiated locally, the controller remains energized; when initiated remotely, complete power cutoff occurs. This parameter change resolves the contradiction between quick startup and failure prevention.
2Productivity
If the apparatus shifts to standby state for quick restart, then startup time is reduced, but remote control shutdown cannot guarantee complete power OFF
Solution Approach 1:
The system incorporates feedback regarding the shutdown source (local vs. remote) to determine the appropriate power state transition. This feedback mechanism ensures that remote shutdowns result in complete power cutoff while local shutdowns enable standby mode, resolving the contradiction between restart efficiency and remote shutdown reliability.
Solution Approach 2:
The power management system dynamically responds to different shutdown sources by transitioning to appropriate states: standby for local shutdowns (maintaining productivity) and complete power-off for remote shutdowns (ensuring operational reliability).
3Speed
If the controller remains energized in standby state, then next power-ON operation is faster, but the power source is not completely turned off
Solution Approach 1:
The invention changes the power supply parameter based on the shutdown source: local shutdowns maintain controller energization for fast boot, while remote shutdowns implement complete power cutoff. This resolves the contradiction between power-ON speed and complete power shutdown by adapting the parameter to the operational context.
Data Source
AI summary
Information is stored indicating a power state to which a printing apparatus is to be shifted. When a power switch receives a power off instruction, the printing apparatus is shifted to a first power state or a second power state in accordance with the stored information. In a first power state, power is supplied to a part of devices provided in the printing apparatus, and in a second power state, power is not supplied to the part of devices in the printing apparatus.