Print head for micro-deposition of bio-molecules

• US 20040109045A1
• Filed: 12/06/2002
• Published: 06/10/2004
• Est. Priority Date: 12/06/2002
• Status: Abandoned Application

• Current Assignee: Eastman Kodak Company
• Original Assignee: Eastman Kodak Company
• Inventors: Kocher, Thomas E.
• Application Number:
  US10/313,072
• Publication Number:
  US 20040109045A1
• Time in Patent Office: Days
• US Class Current: 347/68
• CPC Class Codes: B01L 2300/0819 Microarrays; Biochips
• CPC Class Codes: B01L 2300/0838 Capillaries
• CPC Class Codes: B01L 2400/0439 ultrasonic vibrations, vibrating piezo elements
• CPC Class Codes: B01L 3/0268 using pulse dispensing or spraying, eg. inkjet type, piezo actuated ejection of droplets from capillaries

Abstract

A print head for depositing molecular liquids on a substrate comprising: a block of prezoelectic material including at least one void passing through the block and first and second electrodes respectively coating the void and the block, such that application of a voltage between the electrodes produces a radial force to constrict the void and eject liquid contained in the void.

Claims

1. A print head for depositing molecular liquids on a substrate comprising:

a block of piezoelectic material including at least one void passing through said block; and

first and second electrodes respectively coating said void and said block, such that application of a voltage between said electrodes produces a radial force to constrict said void and eject liquid contained in said void.

2. The print head of claim 1 wherein said at least one void contains a glass or plastic capillary tube for containing a molecular liquid to be ejected.

3. The print head of claim 1 including a plate on said block having an orifice aligned with said at least one void.

4. The print head of claim 1 including a tube connected to said orifice for supplying molecular liquid to said at least one void in said block.

5. The print head of claim 1 wherein said block is made of lead zirconate titonate material.

6. The print head of claim 1 wherein said block includes a linear array spaced of voids passing through said block.

7. The print head of claim 1 wherein said block includes an array of spaced voids passing through said block.