Brushing – scrubbing – and general cleaning – Implements – Fabric
Reexamination Certificate
1999-01-13
2001-01-09
Thomas, Alexander S. (Department: 1772)
Brushing, scrubbing, and general cleaning
Implements
Fabric
C360S128000, C428S077000, C428S196000, C428S201000
Reexamination Certificate
active
06170115
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a cleaning tape for use in cleaning photographic material transporting rollers in a photographic processor.
2. Description of the Prior Art
In general, a number of paired transporting rollers, composed of drive side transporting rollers and driven side transporting rollers press-contacted with the drive side transporting rollers, are arranged along a transporting passageway of a negative film or a photographic (printing) paper in the photographic processor so that the negative film or photographic paper can be transported along the transporting passageway. In this photographic processor, when the transporting rollers are contaminated by contaminants, such as dirt, built up thereon, the transporting rollers slip against the photographic material. As a result, the transport of the photographic material cannot be performed with accuracy.
For avoidance of this problem, various cleaning methods are proposed. One typical prior cleaning method is that the transporting rollers in the photographic processor are cleaned out with separately prepared waste. This cleaning method however is poor in workability in requiring that, after operation of the photographic processor is stopped, the transporting rollers in the photographic processor are cleaned out manually from a handhole of the processor.
There is proposed another cleaning method in which a tape having on one side surface thereof a liquid absorbing layer of a non-woven fabric impregnated with a solvent such as acetone or alcohol is passed through the pairs of transporting rollers to clean out the contaminants on the transporting rollers by means of the liquid absorbing layer impregnated with the solvent. This cleaning method however sometimes causes problems in that sensors are contaminated by the solvent with which the liquid absorbing layer is impregnated and in that the working environment becomes worse by evaporation of the solvent.
There is proposed still another cleaning method in which a tape, simply having an adhesive layer, on an adhesive layer, one side surface thereof is passed through the pairs of transporting rollers to transfer the contaminants on the transporting rollers to the adhesive layer. This cleaning method of however involves problems in that the adhesive layer sometimes adheres to not only the transporting rollers, but also other parts, accidentally, so that the tape is captured by them. As a result of this, smooth cleaning is hindered so as to inevitably produce reduced efficiency of the cleaning.
SUMMARY OF THE INVENTION
In the light of these circumstances, the present invention has been made. It is the object of the invention to provide a cleaning tape capable of reliably cleaning out contaminants on the transporting rollers of the photographic processor with efficiency and without being rolled into the transporting rollers.
To achieve the above object, the present invention provides a cleaning tape for use in cleaning transporting surfaces of transporting rollers arranged along a photographic material transporting passageway, wherein a tape body is provided on at least one side thereof with an adhesive layer, with a distance away from one lengthwise end thereof, and a porous screen is laid on the adhesive layer.
The cleaning tape of the invention is constructed such that when a surface of a portion of the tape body forming thereon the adhesive layer is in a non-pressurized state, the porous screen protrudes from a surface of the adhesive layer so that the cleaning tape can show substantial non-tackiness, while on the other hand, when the surface of the portion of the tape body forming thereon the adhesive layer is in a pressurized state, the adhesive layer emerges from porous portions of the porous screen so that the cleaning tape can show substantial tackiness.
It is preferable that the entire length of the adhesive layer is set to such a length that the transporting rollers can turn not less than one turn.
Further, it is preferable that a ratio (S
1
/S
2
) of an area S
1
of exposed surfaces of the adhesive layer emerged from the porous portions of the porous screen and an area S
2
of part of the adhesive layer on which the porous screen is provided is in the range of from 50/1 to 1/10.
REFERENCES:
patent: 3789452 (1974-02-01), Nemoto
patent: 4408241 (1983-10-01), Ogawa
patent: 5223329 (1993-06-01), Amann
patent: 2078558 (1982-01-01), None
patent: 97/10596 (1997-03-01), None
Narukami Shinji
Tanaka Naomitsu
Nitto Denko Corporation
Thomas Alexander S.
Wenderoth , Lind & Ponack, L.L.P.
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