Compact Ribbon Cartridge for Credential Printers
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Solution Overview
Problem
Conventional reverse-image credential production devices are large, cumbersome, and complex, with inefficient ribbon loading and positioning processes that occupy excessive space.
Innovation Solution
The development of ribbon cartridges with a take-up spool and supply spool configuration, where the ribbon is wound in a manner that allows for compact storage and efficient feeding, utilizing a housing with rear and front wall supports to form spool receivers, enabling the ribbon to be wound in a way that reduces space occupancy and facilitates easy loading and unloading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional reverse-image credential production devices use separate print and transfer ribbon systems, then the device can perform complete credential production, but the device becomes large, cumbersome and occupies excessive space
Solution Approach 1:
The patent combines the print ribbon and transfer ribbon into a single integrated cartridge assembly. The print spool and transfer spool are positioned adjacent to each other within the same cartridge housing, allowing both ribbons to be fed through the device simultaneously from a unified structure. This merging eliminates the need for separate ribbon loading mechanisms and reduces the overall device footprint while maintaining full credential production capability.
Solution Approach 2:
The patent implements a nested arrangement where the print spool and transfer spool are positioned within a compact cartridge housing that contains both ribbon supplies. The ribbons are wound on adjacent spools that share common support structures and feeding mechanisms within the cartridge. This nesting approach allows the two ribbon systems to occupy overlapping spatial volumes, significantly reducing the total space required compared to separate systems.
2Area of stationary object
If the device uses a compact ribbon cartridge design, then space requirements are reduced, but the ribbon loading and positioning process becomes more complex
Solution Approach 1:
The patent divides the ribbon feeding system into distinct functional segments: the print spool with its ribbon supply, the transfer spool with its ribbon supply, and a common feeding mechanism. Each spool is independently mounted on its own bearing assembly within the cartridge, allowing for separate ribbon replacement while maintaining a unified feeding path. This segmentation simplifies the loading process by allowing operators to load or replace individual ribbons without affecting the other ribbon system.
Solution Approach 2:
The patent employs universal support structures and feeding mechanisms that serve both the print ribbon and transfer ribbon. The cartridge housing contains common idler rollers, tensioning elements, and alignment features that accommodate both ribbons simultaneously. This multi-functional design allows the same structural elements to support and feed both ribbons, reducing the overall complexity compared to having separate dedicated mechanisms for each ribbon.
3Length of stationary object
If the print spool and transfer spool are positioned adjacent to each other, then the device height is reduced, but the ribbons may interfere with each other's path
Solution Approach 1:
The patent resolves ribbon path interference by utilizing vertical and lateral dimensional separation. The print ribbon and transfer ribbon are fed through vertically stacked or laterally offset paths within the cartridge assembly. Idler rollers and guide elements are positioned at different heights or lateral positions to create distinct ribbon channels that do not intersect, even though the spools are positioned adjacent to each other. This dimensional separation maintains compact device height while preventing ribbon interference.
Data Source
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AI summary
A ribbon cartridge (110, 114) for use in a credential production device (100) is disclosed. The ribbon cartridge (110, 114) includes a take-up spool (120, 124), a supply spool (118, 122) and a ribbon (112, 116) wound on the supply (118, 122) and take-up spools (120, 124). The supply spool (118, 122) includes a loaded condition, in which a majority of the ribbon (112, 116) is wound on the supply spool (118, 122) and a minority of the ribbon (112, 116) is wound on the take-up spool (120, 124). The take-up spool (120, 124) includes a loaded condition, in which a majority of the ribbon (112, 116) is wound on the take-up spool (120, 124) and a minority of the ribbon (112, 116) is wound on the supply spool (118, 122). The ribbon (112, 116) wound on the supply spool (118, 122) in the loaded condition extends into the space occupied by the ribbon (112, 116) wound on the take-up spool (120, 124) when the take-up spool (120, 124) is in the loaded condition.