Chemical analysis film cartridge

• US 5,534,224 A
• Filed: 07/14/1994
• Issued: 07/09/1996
• Est. Priority Date: 07/16/1993
• Status: Expired due to Term

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Inventors: Abe, Yoshihiko
• Primary Examiner(s): Warden, Jill
• Assistant Examiner(s): Le, Long V.
• Application Number:
  US08/273,131
• Time in Patent Office: 726 Days
• Field of Search: 422/104, 422/102, 422/99, 422/63, 422/64, 422/66, 422/58, 436/43, 436/44, 436/46, 436/48, 436/887, 221/198, 221/226, 221/279
• US Class Current: 422/63
• CPC Class Codes: G01N 2035/00059 vacuum chucks
• CPC Class Codes: G01N 2035/00089 Magazines
• CPC Class Codes: G01N 2035/00108 Test strips, e.g. paper
• CPC Class Codes: G01N 35/00029 provided with flat sample substrates, e.g. slides G01N35/028 takes precedence
• CPC Class Codes: Y10T 436/11 Automated chemical analysis
• CPC Class Codes: Y10T 436/112499 with sample on test slide
• CPC Class Codes: Y10T 436/114165 with step of insertion or removal from test line

Abstract

A chemical analysis film cartridge having a box-like casing body with opposing first and second end walls and in which dry frameless chemical analysis film chips are stored in a stack between the end walls. A first opening is formed in a side wall of the casing body near the first end wall so that only the film chip nearest the first end wall can be removed from the casing body through the first opening. A second opening in the first end wall permits a suction pad to hold the film chip nearest to the first end wall and to take the film chip out of the casing body through the first opening. The width of the first opening is larger than the thickness of one film chip and smaller than double the thickness of one film chip. The suction pad is retracted so that the film chip abuts against the edge of the second opening on opposite sides of the suction pad, and then the suction pad is further retracted to pull the central portion of the film chip into the second opening, thereby reshaping the film chip into a predetermined warped-shape conforming to the shape of the first opening.

Claims

1. A chemical analysis film cartridge comprising:

a casing body having first and second end walls opposed to each other and in which a plurality of dry frameless chemical analysis film chips, each comprising a reagent containing layer formed on a support sheet, are stored in a stack extending between the end walls, a first opening being formed in a side wall of the casing body at a portion near the first end wall of the casing body so that only the chemical analysis film chip nearest the first end wall can be removed from the casing body through the first opening by moving the chemical analysis film chip in a direction substantially perpendicular to a direction in which the chips are stacked, and a second opening being formed in the first end wall of the casing body so that a film takeout means can hold the chemical analysis film chip nearest the first end wall through the second opening and deform the film chip into a predetermined warped shape to remove the film chip from the casing body through the first opening, the first opening having a shape and size that permit only the film chip having the predetermined warped shape to be removed through the first opening, wherein

the first opening and the second opening communicate with each other, and wherein a space (c) defined between an edge (20i) of the second opening and an upper edge (20j) of the first opening above the edge (20i) in the direction in which the chips are stacked is larger than the thickness of one chemical analysis film chip and smaller than double the thickness of one chemical analysis film chip.

2. A chemical analysis film cartridge as defined in claim 1 wherein said casing body comprises an urging means for urging the stack of the chemical analysis film chips toward the first end wall.

3. A chemical analysis film cartridge as defined in claim 1 or 2 wherein the first opening includes a projection which prevents the chemical analysis film chip nearest the first end wall from passing through the first opening when the film chip is not deformed by the film takeout means.

4. A chemical analysis film cartridge as defined in claim 1, wherein the width of the first opening in the direction in which the chips are stacked increases toward respective ends of the first opening.