Print Job Stopping Control for Consecutive and Group Printing Modes
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Solution Overview
Problem
Conventional printing technologies fail to stop print jobs effectively when printing the same page repeatedly for a specified number of copies, leading to incomplete sheet bundles as there is no timing for separation of copies, especially in group printing modes.
Innovation Solution
A printing apparatus with a selection unit that allows for two print methods: consecutive printing of pages for each copy or repeated printing of the same page for specified copies, and a control unit that receives stop instructions, stopping printing after completing the final page in the first method and not starting new sheets in the second method.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If stop instruction is received during group printing (repeated printing of same page for multiple copies), then printing continues to the end without stopping, but this results in wasted printing resources and incomplete sheet bundles
Solution Approach 1:
The control unit determines the print method in advance (consecutive printing vs. group printing) and prepares相应的 stopping strategy. When a stop instruction is received, the control unit checks whether group printing is being performed and immediately terminates the print job without executing further printing operations, preventing waste of printing resources while ensuring reliable job completion control
2Productivity
If stop instruction is received during consecutive printing (each copy prints all pages sequentially), then printing can be stopped at copy separation timing, but this requires complex control logic to detect separation points
Solution Approach 1:
The control unit dynamically adjusts the stopping strategy based on the detected print method. For consecutive printing mode, the system monitors copy completion status and enables stopping at appropriate separation points. The control logic adapts its behavior according to the operational mode, optimizing stopping efficiency without requiring fixed complex control structures for all scenarios
3Speed
If printing is stopped in the middle of copying process, then response time to stop instruction is fast, but this generates incomplete sheet bundles
Solution Approach 1:
The system changes the control parameter (stopping timing) based on the print method. For consecutive printing, stopping occurs at copy separation points to maintain sheet bundle completeness. For group printing, stopping occurs immediately upon receiving the stop instruction since no separation points exist. This parameter adaptation resolves the contradiction between fast stopping response and sheet bundle completeness
Data Source
AI summary
When a printing apparatus of the present invention receives an instruction for stopping printing in a case where printing of a number of copies is performed based on print data for a plurality of pages, if printing is performed by a first print method that performs, for each copy, processing of consecutively printing the plurality of pages and there is a page for which print processing is not started out of pages included in a copy for which print processing is started, the printing apparatus stops the printing after continuing printing until that page, and if printing is performed by a second print method that performs, for each page, processing of repeatedly printing the same page for the number of copies, the printing apparatus stops printing without starting printing processing of a new sheet.