Sample handling plate

• US 20050106074A1
• Filed: 12/10/2004
• Published: 05/19/2005
• Est. Priority Date: 08/08/2003
• Status: Active Grant

• Current Assignee: Enplas Corporation
• Original Assignee: Enplas Corporation
• Inventors: Sakamoto, Yasuyuki
• Granted Patent: US 7,410,617 B2
• Time in Patent Office: Days
• US Class Current: 422/102
• CPC Class Codes: B01L 2200/12 Specific details about manufacturing devices
• CPC Class Codes: B01L 2300/0819 Microarrays; Biochips
• CPC Class Codes: B01L 3/5085 for multiple samples, e.g. microtitration plates
• CPC Class Codes: B29C 2045/0043 preventing shrinkage by reducing the wall thickness of the moulded article
• CPC Class Codes: B29C 45/0025 Preventing defects on the moulded article, e.g. weld lines, shrinkage marks preventing defects on the preformed parts or layers B29C45/14836
• CPC Class Codes: G01N 21/0303 Optical path conditioning in cuvettes, e.g. windows; adapted optical elements or systems; path modifying or adjustment G01N21/031 - G01N21/15 take precedence

Abstract

A sample handling plate 1 has wells 4 on the side of the surface 1a thereof, and lightening portions 6 on the side of the reverse 1b thereof, each of the wells 4 substantially having the same shape and volume as those of each of the lightening portions 6 so that the amount of shrinkage on the side of the surface 1a is equal to that on the side of the reverse 1b during cooling after the injection molding.

Claims

1. A sample handling plate comprising:

a plate body having a surface and a reverse;

a plurality of fine recessed portions formed in said surface of the plate body; and

a recessed portion serving as a lightening portion formed in said reverse of the plate body, said lightening portion being formed so as to have a volume which is substantially equal to a total volume of all of said recessed portions.

2. A sample handling plate comprising:

a plate body having a surface and a reverse;

a plurality of first fine recessed portions formed in said surface of the plate body; and

a plurality of second fine recessed portions serving as lightening portions formed in said reverse of the plate body, said lightening portions being formed so as to have a total volume which is substantially equal to a total volume of all of said first fine recessed portions.

3. A sample handling plate as set forth in claim 2, wherein each of said plurality of lightening portions has the same shape as that of each of said plurality of first fine recessed portions.

4. A sample handling plate as set forth in claim 3, wherein said plurality of first fine recessed portions are arranged at intervals, and said plurality of lightening portions are arranged at the same intervals as those of said plurality of first fine recessed portions so as to be displaced from said plurality of first fine recessed portion by half of each of said intervals.

5. A sample handling plate as set forth in claim 3, wherein said plurality of lightening portions and said plurality of first fine recessed portions are arranged so as to be symmetrical with respect to a central plane in thickness directions of said plate body.

6. A sample handling plate comprising:

a plate body having a surface and a reverse;

a frame portion connected to said plate body so as to surround an outer periphery of said plate body;

a plurality of first fine protrusions formed on the surface of said plate body;

a plurality of second fine protrusions formed on the reverse of said plate body, each of said plurality of second fine protrusions having the same shape as that of each of said plurality of first fine protrusions,

wherein said plurality of first fine protrusions and said plurality of second fine protrusions are arranged so as to be symmetrical with respect to a central plane in thickness directions of said plate body.

7. A sample handling plate comprising:

a plate body having a surface and a reverse;

a fine recessed portion formed in said surface of the plate body; and

a reinforcing rib formed on said reverse of the plate body so as to protrude.

8. A sample handling plate comprising:

a plate body of a resin material having a surface and a reverse;

a fine recessed portion formed in said surface of the plate body; and

a member formed on the side of said reverse of the plate body so as to be integrated therewith, said member being made of a material having a lower coefficient of thermal expansion than that of said resin material.

9. A sample handling plate comprising:

a substantially flat plate body having a surface for allowing very small amounts of samples to adhere thereto at scattered points, and a reverse; and

a reinforcing rib formed on said reverse of the plate body.

10. A sample handling plate comprising:

a substantially flat plate body of a resin material having a surface for allowing very small amounts of samples to adhere thereto at scattered points, and a reverse; and

a member formed on the side of said reverse of the plate body so as to be integrated therewith, said member being made of a material having a lower coefficient of thermal expansion than that of said resin material.