Image Forming Apparatus State Change Notification via Dynamic Display
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Image forming apparatuses for public use face challenges in notifying users or administrators of state changes, such as paper or toner shortages, paper jams, and left-behind items, due to limited screen space and potential screen saver interference, making it difficult for non-operational users to recognize these changes in a timely manner.
Innovation Solution
An image forming apparatus with a controller that detects state changes and displays corresponding images on a screen using colors and figures to represent the reason for the change, ensuring visibility and notification to administrators while minimizing disruption to users, including additional notification sounds and dynamic screen changes to draw attention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If notification is displayed on the operation screen, then state change information is transmitted, but visibility is limited to users directly at the apparatus
Solution Approach 1:
The notification system transitions from a two-dimensional screen display to a three-dimensional spatial notification by projecting light in multiple directions. The reflection-type liquid crystal display can be viewed from various angles, and the backlight unit provides omnidirectional illumination, allowing administrators to view notifications from different positions around the apparatus rather than requiring direct frontal viewing of a limited screen area.
Solution Approach 2:
The patent introduces a backlight unit as an intermediary element that mediates between the display screen and the surrounding environment. This backlight unit reflects light in multiple directions, acting as an intermediary that carries notification information from the limited display area to a broader spatial region, enabling distant viewing without requiring the administrator to be directly at the apparatus.
2Ease of operation
If screen saver is displayed to maintain user comfort, then user experience is improved, but notification reception is delayed
Solution Approach 1:
The liquid crystal display employs dynamic characteristics where the liquid crystal molecules can rapidly change their optical properties in response to electrical signals. This dynamic response allows the display to quickly transition from screen saver mode to notification mode, overcoming the inherent slowness of liquid crystal materials and enabling timely notification display without compromising user comfort during normal operation.
Solution Approach 2:
The notification system uses periodic backlight activation to draw attention to state changes. When a notification is detected, the backlight unit activates periodically or continuously to illuminate the display content, creating a noticeable visual change that alerts administrators even when they are not directly observing the apparatus, thereby reducing notification delays while maintaining user comfort.
3Loss of information
If multiple types of information are transmitted through color changes, then information quantity is increased, but association with individual errors becomes difficult
Solution Approach 1:
The notification system segments information by spatial location rather than relying solely on color coding. Different error types are displayed at different positions on the display screen, and the backlight unit can be divided into multiple regions that illuminate specific areas. This spatial segmentation allows administrators to easily associate notifications with individual errors by location, reducing the complexity of information association while maintaining high information quantity.
Solution Approach 2:
The patent applies local quality by making different regions of the display screen and backlight unit have different functional properties. Specific areas of the backlight unit are associated with specific error types, and the liquid crystal display can show different information in different regions. This localized approach allows multiple types of information to be transmitted while maintaining clear association with individual errors through spatial differentiation rather than relying solely on color changes.
Data Source
AI summary
An image forming apparatus includes an image forming unit, an image output unit, a transport unit that transports a recording medium, a display unit that displays a screen, and a controller that controls the units. The controller detects a state change of each unit of the image forming apparatus, and exerts control so as to cause the display unit to display, in accordance with the detected state change of the unit, an image indicating the state change of the unit. The image indicating the state change of the unit includes a color and a figure which represent a reason of the state change.