Printer Driver Prohibition Processing for User-Defined Sheet Sizes
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Solution Overview
Problem
The existing V4 printer driver's prohibition processing is inadequate for handling user-defined sheet sizes, leading to inconsistencies in print settings, particularly with two-sided printing, as it cannot accurately determine the feasibility of print functions based on arbitrary width and height settings, resulting in potential printing failures.
Innovation Solution
An information processing apparatus that includes a determination unit to identify user-defined sheet sizes, a decision unit to convert these sizes to fixed sizes for prohibition processing, a storage unit to store the user-defined settings, and a changing unit to modify print settings accordingly, ensuring appropriate prohibition processing for each size, enabling users to assess the availability of print functions based on arbitrary dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the V4 printer driver uses standard prohibition processing defined in GPD files, then the print setting UI can display prohibition information, but it cannot accurately perform prohibition processing for user-defined sheet sizes with arbitrary width and height
Solution Approach 1:
The patent introduces an intermediary conversion process that transforms user-defined sheet sizes into equivalent fixed sizes before prohibition processing. The system determines the actual sheet size based on width and height, converts it to a corresponding fixed size (e.g., A4, Letter), and then applies prohibition rules. This intermediary step bridges the gap between flexible user input and rigid prohibition definitions in GPD files, enabling accurate prohibition processing while maintaining UI display capabilities.
2Adaptability or versatility
If the printer driver allows user-defined sheet sizes with arbitrary width and height, then users have flexibility in printing, but the standard GPD prohibition processing cannot determine feasibility of print functions like two-sided printing
Solution Approach 1:
The patent changes the parameter representation of sheet size from arbitrary user-defined dimensions to standardized fixed size categories. By converting continuous width and height parameters into discrete size categories (A4, Letter, Legal, etc.), the system maintains user flexibility in input while enabling reliable prohibition processing through parameter transformation. This allows the system to determine feasibility of print functions accurately by mapping user-defined sizes to known fixed size characteristics.
3Ease of manufacture
If the V4 printer driver follows the standard GPD prohibition format, then prohibition information can be defined, but it cannot handle the complexity of recent prohibition processing requirements including size-dependent restrictions
Solution Approach 1:
The patent segments the prohibition processing into two distinct parts: (1) maintaining the simple standard GPD format for defining prohibition rules, and (2) adding a separate size conversion layer that handles complex size-dependent restrictions. This segmentation allows the existing GPD structure to remain simple and maintainable while the conversion layer adapts to handle complex scenarios including user-defined sizes, width-height based restrictions, and size-specific prohibition rules without modifying the core GPD format.
Data Source
AI summary
An information processing apparatus is provided that includes a determination unit configured to determine whether or not a sheet size included in print settings is a user-defined size; a decision unit configured to decide a fixed size as a sheet size used for prohibition processing based on a width and a height of the user-defined size if the sheet size is the user-defined size; a storage unit configured to store the user-defined size set as the sheet size in the print settings; a changing unit configured to change the sheet size in the print settings from the user-defined size to the fixed size; and a prohibition processing unit configured to perform the prohibition processing for the print settings changed by the changing unit. The changing unit returns the sheet size of the print settings in which the prohibition processing is performed to the user-defined size stored by the storage unit.