Printing System Partial Data Generation for Interruption Recovery
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Solution Overview
Problem
Existing printing systems face inefficiencies in managing and transmitting print data, particularly when printing is interrupted, leading to unprinted pages and increased workload for image forming apparatuses due to incomplete page printing.
Innovation Solution
A printing system comprising a data processing device and an image forming apparatus that includes a data managing unit, a data transmitting unit, and a partial-data generating unit, which generates and transmits unprinted-page print data for pages not completed during interruptions, allowing the image forming apparatus to resume printing efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the image forming apparatus prints all pages from interrupted print data, then the printing can be completed, but the workload on the image forming apparatus increases significantly
Solution Approach 1:
The patent segments the print data into two distinct parts: already-printed pages and unprinted pages. The data processing device identifies and separates these portions, transmitting only the unprinted-page print data to the image forming apparatus. This segmentation allows the image forming apparatus to focus solely on completing the remaining pages rather than reprocessing the entire document, thereby reducing workload while ensuring printing completion.
Solution Approach 2:
The data processing device extracts the unprinted-page print data from the complete interrupted print data set. By identifying which pages were not printed during the interruption and isolating only those specific pages for retransmission, the system removes the unnecessary burden of retransmitting already-printed pages to the image forming apparatus.
2Reliability
If the data processing device transmits all print data again after interruption, then the printing can be resumed, but the communication load increases
Solution Approach 1:
The data processing device extracts and identifies only the unprinted-page print data from the original interrupted print data. By determining which specific pages were not printed and transmitting only those portions, the system minimizes communication load while ensuring that the image forming apparatus receives all necessary data to resume printing successfully.
Solution Approach 2:
Instead of transmitting the complete print data set again (excessive action), the system transmits only the partial portion that is actually needed—the unprinted pages. This partial action approach reduces communication overhead and energy consumption while still achieving the goal of printing resumption.
3Ease of operation
If the image forming apparatus stores all print data, then printing can be performed, but the device complexity increases
Solution Approach 1:
The system segments the data management responsibility: the data processing device handles the complex task of tracking print status and identifying unprinted pages, while the image forming apparatus simply receives and prints the transmitted unprinted-page data. This segmentation reduces the data management complexity burden on the image forming apparatus while maintaining full printing capability.
Data Source
AI summary
A printing system includes a data processing device and an image forming apparatus. The data processing device includes a data managing unit, a data transmitting unit, and a partial-data generating unit. The image forming apparatus includes a data reporting unit and a data request unit. The data reporting unit reports interrupted print data as the print data for which the image forming apparatus has terminated performance of a printing at a page in a middle. The partial-data generating unit generates unprinted-page print data as the partial-page print data, the unprinted-page print data being the print data of the pages the printing of which has been un-performed by the image forming apparatus in the interrupted print data. The data transmitting unit transmits the unprinted-page print data generated by the partial-data generating unit to the image forming apparatus when the interrupted print data is requested from the image forming apparatus.