Three dimensional printing from two dimensional printing devices

• US 20040112523A1
• Filed: 10/10/2003
• Published: 06/17/2004
• Est. Priority Date: 10/15/2002
• Status: Abandoned Application

• Current Assignee: Elden Wendell Crom, Stacey Lynn Crom
• Original Assignee: Elden Wendell Crom, Stacey Lynn Crom
• Inventors: Crom, Elden Wendell, Crom, Stacey Lynn
• Application Number:
  US10/683,792
• Publication Number:
  US 20040112523A1
• Time in Patent Office: Days
• US Class Current: 156/290
• CPC Class Codes: B29C 64/141 using only solid materials
• CPC Class Codes: B29C 64/147 using sheet material, e.g. laminated object manufacturing [LOM] or laminating sheet material precut to local cross sections of the 3D object
• CPC Class Codes: B29C 67/00 Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00

Abstract

A method of rapid prototyping a physical three-dimensional Product that can be preformed on readily available commercial 2D printing devices and paper handling equipment is presented. The method consists of using a 2D printing process to obtain a stack of sheets, each sheet printed with successive cross sectional areas of the desired product with ink (Hardener) that causes the sheet to become resistant to subsequent weakening and removal after the creation of the Brick. The Brick, containing both the positive (printed areas) and negative (unprinted areas), is then subjected to an agent(s) that weakens and removes the unwanted negative regions leaving only the desired Product.

Claims

1. ) A method for creating a product by stacking thin layers of substantially uniform lamenting substrate (similar in nature to sheets of paper), after processing such that some portions of the material (the negative) will dissolve or weaken sufficiently to be easily removed and other portions, those treated with a chemical hardener or hardener precursor, will remain to adhere to other treated layers of substrate immediately above and below the current layer (the positive), if they exist, after subsequently exposing the resultant brick to the appropriate solvent and/or agitation to remove the untreated portions of the brick results in the product.

2. ) The claims of 1, with an additional step of treating the brick with heat, penetrating electromagnetic radiation, compression or other means of speeding or initiating the hardening process of the treated areas.

3. ) The claims of 1, using an inkjet style printer to deliver a chemical hardener to a sheet of the material to be hardened.

4. ) The claims of 1, adding pigments to the substrate, independently or with the hardener, to apply color to the finished part.

5. ) The claims of 1, with the numbers of layers being few enough to appear similar in nature to a single laminated sheet of paper.

6. ) The claims of 1, where the substrate is impregnated with a liquid resin.

7. ) The claims of 6, where the substrate is coated with a substance to facilitate reliability of the paper handling equipment.

8. ) The claims of 6, where the resin is substantially similar to Evercoat™

Fiberglass Resin or Bondo™

All-Porpose Fiberglass Resin.

9. ) The claims of 6, where the incomplete substrate is substantially similar to Dissolvo™

D60S.

10. ) The claims of 1, where the hardener is encapsulated in micro-spheres that are made permeable or broken by heat, cold, pressure, penetrating electromagnetic radiation (probably microwave) after the sheets of substrate have been assembled.

11. ) The claims of 1, where the 2D printing device that delivers a powder hardener such as a laser printer.

12. ) The claims of 11, where the powder consists of micro-spheres containing a liquid hardener.

13. ) The claims of 1, with sheets of resin impregnated substrate inserted between each hardener printed sheet.

14. ) The claims of 1, where each sheet of substrate is adhered into a window of a carrier sheet to facilitate effectiveness of the paper handling mechanism.

15. ) The claims of 13, where each sheet of substrate is adhered into a window of a carrier sheet to facilitate effectiveness of the paper handling mechanism, similar to that presented in FIG. 1A.