CMYK Printer Conversion for Single-Pass Overprint
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Solution Overview
Problem
Toner printers are unable to overprint and underprint in a single pass, requiring separate machines or systems for each operation, which limits their versatility and efficiency, especially when dealing with darker media where color washout is a concern.
Innovation Solution
Converting a standard CMYK toner cartridge printer into a CMYW or CMYX printer using a white toner cartridge and raster image processor (RIP) software, allowing for single-pass overprinting or underprinting with non-standard toner colors like white, metallic, or clear fluorescent, and enabling the printer to recognize these cartridges as acceptable substitutes for black toner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a standard CMYK toner printer is used, then the printer can print in standard colors, but it cannot overprint or underprint in a single pass
Solution Approach 1:
The patent converts a standard CMYK printer into a multi-functional printer that can perform both overprinting and underprinting operations in a single pass by replacing the black toner cartridge with a white toner cartridge and using RIP software to control the printing sequence and layering, allowing one machine to serve multiple printing purposes
Solution Approach 2:
The patent changes the toner color parameter from black to white and uses software control to change the printing sequence parameter, enabling the printer to deposit white toner before or after color toner in a single pass, thereby achieving overprinting or underprinting functionality
2Reliability
If separate machines are used for overprinting and underprinting, then each function can be performed correctly, but the device complexity increases
Solution Approach 1:
The patent makes a single printer capable of performing both overprinting and underprinting functions by equipping it with a white toner cartridge and using RIP software to control the printing sequence, eliminating the need for separate dedicated machines while maintaining printing quality
Solution Approach 2:
The patent enables dynamic switching between overprinting and underprinting modes through software control, allowing the same physical printer to adapt its printing sequence and methodology based on the desired output, thereby reducing hardware complexity while maintaining functional reliability
3Adaptability or versatility
If white toner is printed in place of black, then printing on darker media is improved, but the printer must recognize the white toner cartridge as an acceptable substitute
Solution Approach 1:
The patent uses a cartridge recognition system as an intermediary that identifies the white toner cartridge and triggers appropriate printing parameters, allowing the printer to adapt to the white toner's different optical properties while maintaining reliable operation through software-mediated control
Solution Approach 2:
The patent changes the toner color parameter from black to white and uses software control to change the printing sequence parameter, enabling the printer to deposit white toner before or after color toner in a single pass, thereby achieving overprinting or underprinting functionality
Data Source
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AI summary
A method of converting a CMYK color toner printer to a CMYX color toner printer for over print printing in a single pass. A black toner printing cartridge is removed from the first toner cartridge position and a cyan toner printing cartridge is removed from said fourth toner cartridge position. A non-standard toner printing cartridge is provided and installed in the fourth toner cartridge position, and the cyan toner printing cartridge is installed into the first toner cartridge position. A raster image processor software comprises a selection screen for a user to select over or under print configurations. The raster image processor software is configured to remap the toner printing cartridges of the color toner printer so that the printer recognizes that the user has installed a non-standard toner cartridge and the printer can print a layer of non-standard toner over an image in a single pass.