Pressure measuring film for measuring pressure in small contact area
First Claim
Patent Images
1. A method for measuring pressure comprising the steps of:
- providing a pressure measuring film in which a toner layer with a definite thickness is held between an adhesive layer formed on a first support and an inactive adhesive layer formed on a second support;
subjecting said inactive adhesive layer to activation treatment, so that said inactive adhesive layer becomes adhesive;
applying pressure to said pressure measuring film by contacting said pressure measuring film with an object;
stripping said first support from the pressure measuring film; and
examining an amount of said toner remaining on said second support to determine an amount of the applied pressure.
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Abstract
A pressure measurement method using a pressure measuring film in which a toner layer with a definite thickness is held between an adhesive layer formed on a first support and an inactive adhesive layer formed on a second support. Prior to applying the pressure to be measured to the measuring film, the inactive adhesive layer is activated to have an adhesive property. After pressure to be measured is applied to the film, the first support is removed and the applied pressure is determined based on the amount of toner attached to the second support. Using a toner having extremely small size, an extremely low pressure applied to an extremely small contact area can be measured. Also the pressure measuring film is not affected by use conditions (temperature, humidity). The inactive adhesive layer may be formed of a thermoplastic resin adhesive which can be activated by heating to become adhesive.
20 Citations
18 Claims
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1. A method for measuring pressure comprising the steps of:
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providing a pressure measuring film in which a toner layer with a definite thickness is held between an adhesive layer formed on a first support and an inactive adhesive layer formed on a second support;
subjecting said inactive adhesive layer to activation treatment, so that said inactive adhesive layer becomes adhesive;
applying pressure to said pressure measuring film by contacting said pressure measuring film with an object;
stripping said first support from the pressure measuring film; and
examining an amount of said toner remaining on said second support to determine an amount of the applied pressure. - View Dependent Claims (2, 3, 4, 5)
wherein said step of examining further comprises determining the applied pressure based on a color formed by said different color toners remaining on said second support.
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6. A pressure measuring film comprising:
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first and second supports;
an adhesive layer formed on said first support; and
a recording means for measuring and recording a magnitude and a location of pressure applied to said pressure measuring film;
wherein said recording means comprises a toner layer formed by laminating different color toners each having a uniform thickness. - View Dependent Claims (8, 9, 10, 11, 12, 13)
an inactive adhesive layer formed on said second support; and
a release agent layer formed between the toner layer and said inactive adhesive layer;
wherein said toner layer with a definite thickness is held between said adhesive layer and said inactive adhesive layer.
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13. The pressure measuring film according to claim 6, wherein said recording means comprises:
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an inactive adhesive layer formed on said second support;
wherein said toner layer with a definite thickness is held between said adhesive layer and said inactive adhesive layer.
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7. A pressure measuring film comprising:
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first and second supports;
an adhesive layer formed on said first support; and
a recording means for measuring and recording a magnitude and a location of pressure applied to said pressure measuring film;
wherein said recording means comprises;
an inactive adhesive layer formed on said second support;
a toner layer with a definite thickness held between said adhesive layer and said inactive adhesive layer; and
a release agent layer formed between the toner layer and said inactive adhesive layer. - View Dependent Claims (14, 15, 16, 17, 18)
a toner layer formed by laminating different color toners each having a uniform thickness.
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Specification
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Current AssigneeFujifilm Corporation (Fujifilm Holdings Corporation)
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Original AssigneeFuji Photo Film Co Limited (Fujifilm Holdings Corporation)
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InventorsShigyo, Masao
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Primary Examiner(s)Lefkowitz, Edward
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Assistant Examiner(s)Feguson, Marissa
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Application NumberUS09/568,968Time in Patent Office1,482 DaysField of Search737/15, 737/05, 56/45, 561/53, 563/46, 430/58.4, 430/58, 430/257, 349/119, 335/42, 156/234, 116/203, 116/208, 116/205, 116/211US Class Current116/200CPC Class CodesG01L 1/247 using distributed sensing e...
