Color measurement instrument capable of both strip reading and spot reading

• US 7,322,527 B2
• Filed: 04/28/2005
• Issued: 01/29/2008
• Est. Priority Date: 04/30/2004
• Status: Active Grant

• Current Assignee: X-Rite Incorporated (Danaher Corporation)
• Original Assignee: X-Rite Incorporated (Danaher Corporation)
• Inventors: Newton, Paul D., Weber, Michael J., Baker, Douglas V., Sutton, Todd A.
• Primary Examiner(s): Lee; Michael G.
• Assistant Examiner(s): VO, TUYEN KIM
• Application Number:
  US11/116,866
• Publication Number:
  US 20050242191A1
• Time in Patent Office: 1,006 Days
• Field of Search: 235/454, 23546243-46245, 235/472.01
• US Class Current: 235/472.01
• CPC Class Codes: G01J 3/02 Details
• CPC Class Codes: G01J 3/0272 Handheld
• CPC Class Codes: G01J 3/0283 using a charging unit
• CPC Class Codes: G01J 3/0291 Housings; Spectrometer accessories; Spatial arrangement of elements, e.g. folded path arrangements
• CPC Class Codes: G01J 3/50 using electric radiation detectors
• CPC Class Codes: G01J 3/524 Calibration of colorimeters
• CPC Class Codes: G01N 21/251 Colorimeters; Construction thereof
• CPC Class Codes: G01N 21/5907 Densitometers
• CPC Class Codes: G01N 21/8483 Investigating reagent band test-element handling not specific to a test method G01N33/4875; analytical elements specific to chemical analysis of biological material G01N33/52; autometer with reagent band G01N35/04

Abstract

A color measurement instrument that is capable of both spot reading and strip reading. The instrument includes a handheld unit and a docking unit. When removed from the docking unit, the handheld unit is used for spot reading. When docked in the docking unit, the handheld unit and the docking unit are used together for strip reading. The handheld unit includes a self-storing target that is deployed for spot reading and stored for strip reading. The handheld unit also includes a self-storing calibration plaque that is deployed for calibration and stored otherwise. When docked, the handheld unit teeters on the docking unit between a normally closed position and a manually selectable open position to accommodate a variety of sample thicknesses.

Claims

1. A color measurement unit comprising:

a housing;

a color measurement engine within said housing;

a self-storing calibration assembly including a calibration plaque and an arm supporting said calibration plaque on said housing, said self-storing calibration assembly movable between an operative position in which said calibration plaque is aligned with said color measurement engine and a storage position in which said calibration plaque is unaligned with said color measurement engine.

2. A color measurement unit as defined in claim 1 wherein:

said housing defines a recess; and

at least a portion of said self-storing calibration assembly is located within said recess when said self-storing calibration assembly is in the storage position.

3. A color measurement unit as defined in claim 1 wherein;

said arm defines a pocket; and

said calibration plaque is located within said pocket.

4. A color measurement unit as defined in claim 3 wherein:

said housing defines a recess; and

said pocket and said calibration plaque are located within said recess when said self-storing calibration assembly is in the storage position.

5. A color measurement unit as defined in claim 1 further comprising a docking unit, said color measurement unit being selectively docked in said docking unit, said self-storing calibration assembly being configured to move to the operative position when said color measurement unit is undocked, said self-storing calibration assembly being incapable of moving to the operative position when said color measurement unit is docked.

6. A color measurement instrument comprising:

a color measurement engine; and

a self-storing calibration assembly including a calibration plaque, said self-storing calibration assembly movable between an active position in which said calibration plaque is aligned with said color measurement engine and a storage position in which said calibration plaque is unaligned with said color measurement engine, said self-storing calibration assembly connected to said color measurement instrument in both positions;

wherein said self-storing calibration assembly comprises;

a support arm defining a pocket; and

a calibration plaque located within said pocket.