Relay Transport Guide Structure for Medium Skew Correction
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Solution Overview
Problem
In recording systems where a feeding device is external to the recording device, large skew in the medium can lead to inadequate skew correction, resulting in improper recording.
Innovation Solution
A relay transport device positioned between the recording and feeding devices, featuring a first restriction section, transport section, and auxiliary guides to correct skew and maintain medium position, ensuring proper alignment before recording.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If skew correction is performed only at the recording device using a roller pair, then the structure remains simple, but large skew from external feeding devices cannot be sufficiently corrected
Solution Approach 1:
A relay transport device is introduced as an intermediary component between the external feeding device and the recording device. This relay transport device includes a transport section with multiple rollers that actively correct skew during medium transport, serving as a mediator that bridges the feeding and recording functions while eliminating large skew issues
Solution Approach 2:
The skew correction function is segmented into multiple stages: the relay transport device performs preliminary skew correction during medium transport from the feeding device, and the recording device performs final alignment correction. This segmentation allows each component to specialize in specific correction tasks, improving overall precision without overcomplicating any single device
2Reliability
If the medium is transported directly from an external feeding device to the recording device, then the system remains simple, but skew correction is insufficient for large initial skew
Solution Approach 1:
The relay transport device serves as a reliable intermediary that ensures accurate medium delivery to the recording device. It incorporates multiple transport rollers with controlled rotation, enabling precise position control and reliable skew correction, thereby ensuring recording accuracy even when connected to external feeding devices with large initial skew
Solution Approach 2:
The relay transport device performs preliminary skew correction and medium alignment during the transport phase before the medium reaches the recording device. This preliminary action reduces the burden on the recording device's skew correction mechanisms and ensures that the medium arrives in a pre-aligned state, improving overall system reliability
Data Source
AI summary
A relay transport device configured to relay and transport a medium fed from the feeding device to the recording device includes a first restriction section having a first restriction surface configured to position one first edge of the medium in a width direction of the medium fed from the feeding device; a transport section configured to transport the medium toward the first restriction surface; a first auxiliary guide disposed downstream of the first restriction section in the transport direction and having a first auxiliary guide surface configured to restrict a position of the first edge of the medium; and a second auxiliary guide disposed on an opposite side from the first auxiliary guide with the medium interposed therebetween and having a second auxiliary guide surface configured to restrict a position of a second edge of the medium on the opposite side from the first edge.