Image Forming Apparatus Job List Visibility Control
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Solution Overview
Problem
In image forming apparatuses, when a selected job is output and the display position is updated, it can become hidden from view due to page switching or scrolling, leading to potential erroneous deletion of the wrong job, as the selected job may not be visible on the screen, causing difficulties in confirming the correct job for deletion or execution.
Innovation Solution
The control unit manages the display list to maintain the selected job's position on the screen during updates, ensuring it remains visible even when the page is switched or scrolled, and adjusts the display positions of other jobs to prevent the selected job from being hidden, either by keeping it at the top or tail position or ensuring it is not raised upon output completion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display position of JOB is shifted to the upper position with the completion of the output of the JOB while the JOB is selected and the page of the list of the JOBs is switched or scrolled, then the display is updated to reflect the current state, but the selected JOB may not be seen on the screen
Solution Approach 1:
The control unit performs preliminary actions by maintaining the display position of the selected JOB before updating the list. When a JOB is selected, the system records its display position and prevents automatic repositioning during subsequent updates, ensuring the selected JOB remains visible even as other JOBs are added or removed from the list.
Solution Approach 2:
The patent applies local quality by treating the selected JOB differently from other JOBs in the list. While other JOBs are repositioned according to their status changes (completion, addition), the selected JOB is exempt from repositioning to maintain its visibility. This differential treatment ensures the selected item remains accessible while the rest of the list updates normally.
2Reliability
If the checking POP-UP screen is displayed on the display list, then the user can confirm the operation, but the display of the JOB may be hidden below the checking POP-UP screen
Solution Approach 1:
Before displaying the POP-UP screen for operation confirmation, the control unit performs a preliminary check to ensure the selected JOB remains visible. The system adjusts the display layout or prevents the POP-UP from obscuring the selected JOB, so that users can confirm operations while still seeing the target JOB.
Solution Approach 2:
The patent introduces an intermediary mechanism where the control unit manages the interaction between the POP-UP screen and the JOB list display. When the POP-UP is displayed, the system mediates by adjusting positions or providing alternative visibility mechanisms to ensure the selected JOB remains accessible, preventing complete obscuration.
3Reliability
If the display is updated with the execution of the JOB on the list screen, then the current status is reflected, but it is difficult to determine whether the JOB is a correct subject for instructing operation
Solution Approach 1:
The control unit performs a preliminary action by maintaining the display position of the selected JOB before updating the list status. This ensures that even as JOB statuses change and the list updates, the selected JOB remains in a predictable, visible position, allowing users to confidently identify the subject of their instructing operation.
Data Source
AI summary
An image forming apparatus includes: an image forming unit which forms an image based on a JOB; a display operation unit which enables a display and an operation for the JOB; and a control unit which manages the JOB and controls the image forming unit and the display operation unit, wherein the control unit arranges a predetermined number of JOBs on one screen according to a reservation order to be output in the display operation unit, displays a list switched of a page or scrolled by an instructing operation of a user, updates the display of the displayed list, selects the JOB in the displayed list by the instructing operation of the user, executes the instructing operation for the selected JOB, and maintains at least the selected JOB displayed on the screen to be displayed on the screen.