Printer Driver Page Start Command Delay for Single-Page Duplex
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Solution Overview
Problem
Conventional printers waste resources and cause unnecessary operations when set to both-side printing for documents with only one page, leading to inefficient use of ink and increased FPOT, as well as potential user dissatisfaction due to incorrect discharge orientation and image quality issues.
Innovation Solution
A printer driver configuration that delays transmitting the page start command for the first page until it is confirmed that there are multiple pages, allowing for one-side printing when the print setting is both-side, thereby avoiding unnecessary switchbacks and optimizing the printing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If both-side printing mode is used for a single-page document, then the printer can handle both-side printing requirements, but unnecessary switchback operation is performed and printing time is wasted
Solution Approach 1:
The system dynamically adjusts the printing mode based on the detected number of pages. When a single-page document is detected, the printer automatically switches from both-side printing mode to one-side printing mode, making the system adaptable to different document types and eliminating unnecessary operations
Solution Approach 2:
The printer driver receives feedback about the total number of pages from the operating system and uses this information to determine the appropriate printing mode. This feedback mechanism allows the system to make informed decisions about whether to perform both-side or one-side printing, avoiding unnecessary switchback operations
2Reliability
If both-side printing mode is used for a single-page document, then the printer follows the set print mode, but the printing sheet is discharged with incorrect orientation
Solution Approach 1:
The discharge orientation is dynamically adjusted based on the printing mode and document length. For single-page documents printed in one-side mode, the printer discharges sheets in the original orientation without switchback, while for multi-page both-side printing, the switchback operation provides correct orientation, making the system adaptable to different scenarios
3Reliability
If both-side printing mode is used for a single-page document, then the printer performs complete both-side printing process, but ink is wasted
Solution Approach 1:
The ink consumption is optimized by dynamically selecting the printing mode. When a single-page document is detected, the system switches to one-side printing mode, using ink only for the necessary side rather than performing unnecessary both-side printing operations, thus reducing substance loss while maintaining reliable printing
Solution Approach 2:
Instead of performing the complete both-side printing process (excessive action) for single-page documents, the system applies partial action by executing only the necessary one-side printing, eliminating wasteful ink consumption on the second side that would not be used
4Speed
If the printer driver transmits page start command immediately, then the printing process starts quickly, but it cannot determine whether to use one-side or both-side printing mode
Solution Approach 1:
The printer driver performs preliminary action by receiving and storing the total page count from the operating system before transmitting the page start command. This allows the system to determine the appropriate printing mode in advance while still maintaining efficient printing speed, as the mode selection is made before printing begins rather than during the process
Data Source
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AI summary
A printer driver does not transmit a page start command for a first page of a print job to a printer at a time when the printer driver receives page start information for the first page of the print job. The printer driver transmits the page start command for the first page to the printer in a mode related to a both-side designating command, in response to receipt of the page start command for a second page. When the printer driver receives job end information for the print job without receiving the page start information for the second page, the printer driver transmits the page start command corresponding to the first page in a mode related to the one-side designating command, thereby one-side printing being performed when the number of pages of a print-target document is one and the print setting is set to the both-side printing.