Patent ID: 11878472
Assignee: STRATASYS, INC.
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 18:
19. An additive manufacturing system comprising:
a tray assembly:
defining a tray aperture configured to install on a tray seat, adjacent a build window, in an engaged configuration; and
comprising:
a set of tensioning posts; and
a set of negative features configured to engage the set of positive features

a separation membrane:
tensioned over the build window;
vertically offset above the tray seat;
configured to seal against and cooperate with an interstitial gasket, circumscribing the build window, to define an interstitial region between an upper surface of the build window and a lower surface of the separation membrane;
arranged between the set of positive features and the set of negative features of the tray assembly; and
defining a set of perforations:
inwardly inset from the set of tensioning posts; and
configured to receive the set of tensioning posts, the set of tensioning posts tensioning the separation membrane across the tray aperture during assembly of the tray assembly around the separation membrane;

a fluid distribution port:
fluidically coupled to the interstitial region; and
configured to direct fluid into the interstitial region to separate the separation membrane from the upper surface of the build window; and

a projection system configured to project electromagnetic radiation toward the upper surface of the build window.