Patent ID: 9269138
Filing Date: 2016-02-23
CPC Classification: G01N,G06T

Claim Text:
1. A method for preparing a sample on a substrate, the method comprising: obtaining an image of a sample applicator in proximity to the substrate, the image comprising a direct image region corresponding to the sample applicator and a first reflected image region corresponding to an image of the sample applicator reflected from a surface of the substrate; determining a position of an edge of the sample applicator in the direct image region; determining a position of a reflected edge of the sample applicator in the first reflected image region; determining a distance between the edge of the sample applicator and the reflected edge of the sample applicator; determining the position of the sample applicator relative to a surface of the substrate based on the distance between the edges; and dispensing the sample onto the substrate using the sample applicator, wherein during the dispensing the position of the sample applicator relative to the substrate is maintained.