Print Job Cancellation Control for Faster Stops Without Streaks
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Solution Overview
Problem
Existing printing apparatuses face issues with prolonged cancellation times and decreased print quality when stopping jobs mid-process, particularly due to incomplete page processing and sheet conveyance before cancellation, leading to streaks or unevenness.
Innovation Solution
Inhibit generation of print data and control sheet conveyance during the display of a cancellation menu to prevent further processing, using band-by-band inhibition and print control restrictions to ensure quality and speed up cancellation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If processing continues for the currently processed page and stops at the beginning of the next page, then print quality is maintained, but cancellation time is prolonged
Solution Approach 1:
The patent segments the printing process into page-level units, allowing cancellation to occur at page boundaries rather than within pages. This segmentation enables the system to complete the current page and stop at the next page boundary, maintaining print quality while reducing cancellation time by avoiding mid-page stoppage.
2Loss of time
If printing stops within a currently printed page, then cancellation time is shortened, but print quality deteriorates due to streaks and unevenness
Solution Approach 1:
The patent employs preliminary action by feeding sheets in advance before they are actually needed for printing. This allows the sheet feeding mechanism to be prepared ahead of time, and when cancellation is requested, the system can stop sheet feeding at the appropriate moment without affecting the quality of pages already committed to printing. This separates the sheet feeding timeline from the printing timeline, enabling quality preservation during cancellation.
3Productivity
If sheets are fed in advance to improve throughput, then printing efficiency increases, but cancellation complexity increases and quality may suffer
Solution Approach 1:
The patent implements feedback mechanisms that monitor the printing state, sheet feeding status, and cancellation requests in real-time. This feedback system allows the controller to dynamically adjust sheet feeding and printing operations, ensuring that cancellation can be executed properly even when sheets have been fed in advance. The feedback loop provides the necessary information to coordinate multiple operations and manage cancellation complexity.
Data Source
AI summary
One or more printing apparatuses, methods for controlling a printing apparatus, and storage mediums are provided herein. At least one object of the present disclosure is to both shorten the time required to complete cancellation of a job and prevent a decrease in print quality in a case of not canceling the job but continuing the printing. At least one embodiment of a printing apparatus may include: a display that operates to display a GUI screen including a cancellation menu screen for canceling a job; and one or more processors. In a case where the display displays the cancellation menu screen while printing based on a job is executed, the one or more processors inhibit generation of print data and inhibit print control for conveyance of a recording medium.