# US 5,702,800 A · Abrasive tape for magnetic information reading apparatus for photographic use, abrasive tape package, and a method for cleaning the apparatus

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- Number: US 5,702,800 A
- Document ID: US5702800A
- Status: Granted
- Kind: A
- Application number: 08/618,351
- Filed: 1996-03-19
- Granted: 1997-12-30
- Earliest claimed: 1995-03-30
- Assignees: Fuji Photo Film Co., Ltd.
- Inventors: Keiji Mihayashi; Katsumi Ryoke
- Web page: https://patentgrep.com/patent/US5702800A

## CPC

- B24D 11/00: Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
- B24D 3/28: Resins {or natural or synthetic macromolecular compounds (B24D3/22 takes precedence)}
- B24D 3/34: characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
- Y10T 428/24372: Particulate matter
- Y10T 428/2438: Coated
- Y10T 428/24413: Metal or metal compound
- B24D: TOOLS FOR GRINDING, BUFFING OR SHARPENING (abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls B24B31/14; honing tools B24B33/08; lapping tools B24B37/11)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An abrasive tape for cleaning a magnetic information reading apparatus for photographic use. The tape comprises an abrasive layer including an abrasive and a binder and a support therefor. The support havs a characteristic thickness between 40 .mu.m and 180 .mu.m. An abrasive tape package for the apparatus comprises a cartrigde body, and a spool which is placed inside the cartrigde and rotatably supported by the cartrigde through a shaft. In the package, the spool is wound by the abrasive tape wherein the support has a thickness between 40 .mu.m and 180 .mu.m; the cartrigde has a feed passway for sending out the abrasive tape; and a pair of apparatus abrasive tape retainers are attached to the inside of the both ends of the shaft.

## Claims

### Claim 1

An abrasive tape for a magnetic information reading apparatus for photographic use comprising:
a support tape having a thickness between 60 .mu.m and 180 .mu.m;
an abrasive layer comprising an abrasive and a binder provided on one side of the support tape;
a hydrophilic colloid layer provided on another side of the support opposite the one side upon which the abrasive layer is provided.

### Claim 2 (depends on 1)

The abrasive tape according to claim 1, wherein the range of the surface roughness R.sub.a defined in Japanese Industrial Standards B 0601-1994 is from 0.05 to 0.6 .mu.m.

### Claim 3 (depends on 1)

The abrasive tape according to claim 1, wherein the abrasive has a Mohs hardness of not less than 5.

### Claim 4 (depends on 1)

The abrasive tape according to claim 1, wherein the abrasive is selected from the group consisting of iron oxide, alumina, chromium oxide, silicon carbide and diamond.

### Claim 5 (depends on 1)

The abrasive tape according to claim 1, wherein the abrasive has an average particle size from 0.1 to 10 .mu.m.

### Claim 6 (depends on 1)

The abrasive tape according to claim 1, wherein from 5 to 700 parts by weight of the binder is used per 100 parts by weight of the abrasive.

### Claim 7 (depends on 1)

The abrasive tape according to claim 1, having a thickness from 60.5 to 210 .mu.m.

### Claim 8 (depends on 1)

A method for cleaning a magnetic information reading apparatus for photographic use, comprising the step of cleaning the apparatus with the abrasive tape according to claim 1.

### Claim 9 (depends on 1)

The abrasive tape according to claim 1, wherein said support tape has a thickness between 60 .mu.m and 150 .mu.m.

### Claim 10 (depends on 9)

A method for cleaning a magnetic head of a photosensitive photograph apparatus, comprising the steps of installing the abrasive tape according to claim 9 in the photosensitive photography apparatus, and running said abrasive tape against the magnetic head of said apparatus.

### Claim 11 (depends on 1)

The abrasive tape according to claim 1, wherein said support tape has a thickness between 75 .mu.m and 180 .mu.m.