Special receptacle or package – For roll or reel – Plural rolls
Patent
1992-08-12
1994-02-22
Price, William I.
Special receptacle or package
For roll or reel
Plural rolls
206398, 206394, 206410, 206408, 206455, 206397, B65D 8566
Patent
active
052879640
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to the packing of photographic web materials, and more specifically to a packing system making it possible to transport very long webs wound round tubes.
BACKGROUND OF THE INVENTION
At present, photographic paper used for printing is supplied in two different forms: either by format as individual sheets, or as rolls which are generally cut after processing. For the latter use, the rolls are of different sizes, adapted to the machines which use them.
Presentation in rolls has made it possible to increase productivity. However, the printing machines need to be installed in dark rooms, to allow the machines to be loaded, since photographic paper must be protected from light. During production, the rolls are obtained by cutting a sheet of large width, e.g. >1 m, longitudinally into individual webs having a relatively narrow width, e.g. 95 mm, 102 mm, 127 mm, or more, which are wound up. The rolls are then individually packed in lightproof sleeves, e.g. as referred to in U.S. Pat. No. 4,876,125. At the time of use, the rolls have to be removed from their packing and positioned in the machines. All these operations must be carried out in the dark, and they are time consuming.
To improve the efficiency of the machines, packing has been designed, adapted to each machine. These types of packing, known as cartridges, are described, for example in U.S. Pat. No. 4,741,439. These cartridges make for easy use of the machine, since there is no longer the need for a room which can be put into total darkness when positioning the photographic paper in the machine. However, the roll lengths are limited and, at the time of their use, it is necessary to renew the cartridges frequently and to connect the webs to one another.
To increase productivity on the machines, one method is to increase the size of the rolls. However, the weight of the rolls becomes heavy and, on account of this, it becomes tedious to handle them, both when packing and removing them from the packing. At preset, rolls of up to approximately 500 m are used. The weight of these rolls is greater than 10 kg and the diameter is wider than 40 cm.
In view of their dimensions, the rolls offer greater stability when their axis is directed vertically. However the printing machines currently available on the market use rolls whose axes are directed horizontally. One purpose of the invention is therefore to avoid having to tilt the rolls.
SUMMARY OF THE INVENTION
Recent years have seen a trend towards bipolarization of the market in photographic printing; there has been on the one hand an increase in the number of small laboratories using automatic machines, whose loading system employs the cartridges referred to above and which offer limited productivity, and on the other hand a reduction in the number of processing laboratories supplying large numbers of prints, with a considerable increase in the volume of paper for each of these laboratories.
The invention is more specifically intended for procurement for "big" laboratories using a very large volume of paper.
To increase further the productivity of these "big" laboratories, one method would be to increase the lengths of the rolls; however, the weight becomes prohibitive for manual loading, and tilting the rolls becomes troublesome.
One aim of the invention consists in supplying packing able to hold rolls of great length, measuring between approximately 500 m and 2,000 m, designed to allow easy loading of the machines, with simple and low-cost devices.
Another aim of the invention is to supply packing which requires only a little packing material and labor, so to reduce production costs.
One aim of the invention concerns reusable collective packing for photographic web materials wound round tubes so as to form rolls. In this invention, the packing consists of the following:
a) a lightproof base adapted for handling by lift truck,
b) a rigid lightproof case which can be connected to the base through lightproof means; and
c) at least one spindle located within the
REFERENCES:
patent: 4058823 (1977-11-01), Mitchel et al.
patent: 5163556 (1992-11-01), Akao et al.
Bonnamour Robert G.
Jacquand Daniel R.
Bailey Clyde E.
Eastman Kodak Company
Price William I.
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