Printer Paper Feed Port Selector for Seamless Alternate Printing
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Solution Overview
Problem
Existing printers fail to seamlessly switch to alternate paper supplies during printing, often resulting in the use of inappropriate paper types and orientations, leading to poor print quality and user inconvenience.
Innovation Solution
A printing device with multiple paper feed ports, equipped with a paper information acquisition unit, no-paper detector, and a paper feed port selector that chooses an alternate paper feed port based on printing conditions, ensuring paper size, type, and orientation match, preventing the use of inappropriate paper and improving usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the printer uses only paper size matching for alternate printing, then printing continuity is improved, but paper type appropriateness deteriorates
Solution Approach 1:
The patent expands the selection parameters from only paper size to include both paper size and paper type. The paper feed port selector now evaluates multiple parameters simultaneously to choose an alternate paper feed port, ensuring that both dimensions match the printing conditions. This resolves the contradiction by maintaining printing continuity while ensuring paper type appropriateness through multi-parameter evaluation.
2Productivity
If the printer selects any available paper for alternate printing, then printing continuity is improved, but print quality deteriorates
Solution Approach 1:
The patent introduces comprehensive parameter matching including paper size, paper type, and orientation. The paper feed port selector compares these multiple parameters against the printing conditions to select the most appropriate alternate paper feed port. This ensures that print quality is maintained while achieving printing continuity by selecting paper that matches all critical parameters rather than just availability.
3Speed
If the printer switches paper feed ports without verifying paper properties, then switching speed is improved, but paper compatibility deteriorates
Solution Approach 1:
The patent performs preliminary verification of paper properties (size, type, orientation) before switching paper feed ports. The paper feed port selector acquires paper information from the candidate paper feed port and compares it with the printing conditions in advance. This preliminary check ensures paper compatibility is verified before the switch occurs, resolving the contradiction between switching speed and paper compatibility by making the verification process integral to the switching mechanism.
4Device complexity
If the printer uses simple paper size matching for alternate printing, then device complexity is reduced, but paper selection accuracy deteriorates
Solution Approach 1:
The patent enhances the selection logic to evaluate multiple parameters (paper size, paper type, orientation) instead of just paper size. The paper feed port selector implements a comprehensive comparison process that checks each parameter against the printing conditions. This multi-parameter evaluation approach improves paper selection accuracy while managing device complexity through a systematic selection framework.
Data Source
AI summary
Provided is a printer that continues printing using an alternate paper feed port when the paper stocked in the paper feed port being used for printing becomes exhausted while printing, providing excellent usability and preventing using inappropriate paper. A printing device capable of alternate printing using a second paper set in a different paper feed port when first paper set in a first paper feed port and used for printing is depleted, includes: a print job receiver that receives print jobs including printing conditions; a paper information acquisition unit that acquires paper information about paper set in the paper feed ports; a no-paper detector; a paper feed port selector that selects a paper feed port based on the printing conditions and paper information. The paper feed port selector, when the no-paper detector detects there is no first paper, the paper size of the first paper and the second paper is the same, and the paper type of the first paper and the second paper are included in the same group of type groups, selects the paper feed port in which the second paper is set as the paper feed port for alternate printing.