Partial Job Ticket Analysis for Print File Acquisition
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Solution Overview
Problem
The existing print on demand (POD) systems experience delays and efficiency drops due to the need for full analysis of Job Description Format (JDF) job tickets before acquiring page description language (PDL) files, which delays the start of printing and reduces performance.
Innovation Solution
An image forming apparatus is configured with a reception unit for job tickets, a partial analysis unit to analyze only the necessary sections of the JDF, a transmission unit to request PDL files from an external apparatus, and a control unit to manage printing based on the analysis, allowing for partial analysis and immediate PDL file acquisition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If full analysis of the JDF job ticket is performed before acquiring the PDL file, then the settings can be properly validated and printing can be controlled accurately, but the acquisition time increases and printing efficiency decreases
Solution Approach 1:
The JDF job ticket analysis is segmented into two phases: a first analysis that extracts only the PDL file path information to enable immediate file acquisition, and a second analysis that performs comprehensive validation of printing settings. This segmentation allows the system to obtain the PDL file without waiting for complete analysis, thereby reducing acquisition time while ensuring printing control accuracy through the subsequent comprehensive analysis.
Solution Approach 2:
The first analysis performs a preliminary extraction of the PDL file path from the JDF job ticket before the complete analysis is finished. This preliminary action enables the system to start acquiring the PDL file in advance, overlapping the file acquisition process with the remaining analysis work, thus reducing the overall time loss without compromising the reliability of printing control.
2Ease of operation
If the PDL file path is specified in the JDF job ticket for external storage, then the submitter can conveniently submit the print job without transmitting the file, but the PDL file cannot be acquired unless the JDF job ticket is fully analyzed
Solution Approach 1:
The analysis process is divided into a first analysis that specifically targets extraction of the PDL file path from the JDF job ticket, and a second analysis that validates printing settings. This segmentation enables the system to quickly locate and acquire the PDL file from external storage using the path information extracted in the first analysis, eliminating the bottleneck of waiting for complete analysis and thereby improving printing efficiency while maintaining ease of job submission.
Solution Approach 2:
The system performs preliminary extraction of the PDL file path information from the JDF job ticket before completing the full analysis. This preliminary action allows the acquisition request to be transmitted to the external apparatus in advance, enabling the PDL file to be fetched while the remaining analysis is ongoing, thus resolving the contradiction between convenient job submission and efficient printing.
Data Source
AI summary
Part of a received job ticket is analyzed, and an acquisition request for a print file is transmitted to an external apparatus based on a result of the analysis. The job ticket is analyzed, and printing is controlled based on a result of the analysis and the print file acquired from the external apparatus based on the acquisition request to the external apparatus.