Inkjet forming method

Patent metadata

Field	Value
Publication number	US-2017050385-A1
Application number	US-201615241090-A
Country	US
Kind code	A1
Filing date	Aug 19, 2016
Priority date	Aug 21, 2015
Publication date	Feb 23, 2017
Grant date	—

Abstract

An inkjet forming method is provided that manufactures a three-dimensional object by vertically stacking multiple horizontally extending layers. The contour of a region in one layer, constituting a target object, in the horizontal direction is contiguous with a region in the layer constituting a removable portion and is vertically contiguous with a region constituting the target object in another layer immediately above and vertically contiguous with the one layer. At least a part of the region constituting the removable portion forms a contour of the layer in the horizontal direction. When a target layer is formed by the inkjet forming method, entirety of the target layer and an entire contour of the target layer in the horizontal direction are vertically contiguous with an inner part of another layer immediately below the target layer than a contour of the layer immediately below the target layer in the horizontal direction.

First claim

What is claimed is:

1 . An inkjet forming method for manufacturing a three-dimensional object by vertically stacking a plurality of layers in a vertical direction, and the plurality of layers is horizontally extended in a horizontal direction and formed of ink droplets discharged by inkjet printing, and the inkjet forming method is characterized in that,
the three-dimensional object comprising:
a target object; and
a portion, formed in contiguity with the target object, the portion being a removable portion to be removed after the three-dimensional object is manufactured or a transparent portion,
the removable portion or the transparent portion in each of the layers in an overhang region of the target object has: an outer wall in which vertically lower ones of the layers consistently project more outward than vertically upper ones of the layers in the vertical direction.

2 . An inkjet forming method for manufacturing a three-dimensional object by vertically stacking a plurality of layers in a vertical direction, and the plurality of layers is horizontally extended in a horizontal direction and formed of ink droplets discharged by inkjet printing, and the inkjet forming method is characterized in that,
the three-dimensional object comprising:
a target object; and
a portion, formed in contiguity with the target object, the portion being a removable portion to be removed after the three-dimensional object is manufactured or a transparent portion,
at least a partial contour of the target object in the horizontal direction in any one of the layers is contiguous with the removable portion in the layer, and the partial contour is further vertically contiguous with the target object in another one of the layers immediately above, at least a part of the removable portion or the transparent portion forms at least a partial contour of any one of the layers in the horizontal direction, the inkjet forming method comprising:
forming the layers in a manner that an entirety of a target layer and an entire contour of the target layer in the horizontal direction are vertically contiguous with an inner part of an immediate underlayer that is located inward of a contour of the immediate underlayer in the horizontal direction, and the immediate underlayer is another one of the layers immediately below.

3 . The inkjet forming method according to claim 1 , wherein
a gradient, which is defined by an end part that forms a contour in the horizontal direction of one of the layers and an end part that forms a contour in the horizontal direction of another one of the layers immediately above and vertically contiguous with the one of the layers, is calculated from a horizontal distance and a vertical distance equal to or less than 100-fold of the horizontal distance.

4 . The inkjet forming method according to claim 2 , wherein
a gradient, which is defined by an end part that forms a contour in the horizontal direction of one of the layers and an end part that forms a contour in the horizontal direction of another one of the layers immediately above and vertically contiguous with the one of the layers, is calculated from a horizontal distance and a vertical distance equal to or less than 100-fold of the horizontal distance.

Assignees

• Mimaki Eng Co Ltd

Inventors

• Hakkaku Kunio
• Ohi Hiroyoshi
• Nagahari Masaya

Classifications

• B33Y10/00

  Processes of additive manufacturing · CPC title

• B29C64/40

  Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof · CPC title

• B41J2/015

  characterised by the jet generation process (B41J2/215 takes precedence) · CPC title

• B29C67/0059

  Operations & Transport · mapped topic

• B29C67/0092 Primary

  Operations & Transport · mapped topic