Abstract:
A processing apparatus is provided which can be easily transported to whatever location is required. The apparatus has no open tanks of processing solution, the possibility of spillage of the solutions being therefore eliminated.

Description:
FIELD OF THE INVENTION  
         [0001]    This invention relates to the processing of photographic material. The invention particularly relates to a transportable processing unit for processing photographic material.  
         BACKGROUND OF THE INVENTION  
         [0002]    The invention relates to the photographic processing of film and paper in a processing machine, e.g. a minilab. Processing machines are not usually portable. It is desirable to have a processing machine or minilab that is portable. It is also desirable to have a processing machine without the need to empty the chemicals therefrom, or have a hydraulic truck to move it. Such a machine can be used at events where the machine could be quickly set up to process customer films on site. The machine could be transported in van or a truck or even the boot of a car. Such events include big events like the Olympic games or football matches to local fairs and sports events. Other locations could be on passenger ships and trains, for example the Eurostar train. It will be understood that these are examples only and the invention is applicable to any site where the processing of photographic film is wanted.  
           [0003]    As stated above, processing machines are not generally transportable. Most machines are large, heavy and contain several liters of chemicals. Attempts have been made to make a portable processor. Some small tabletop machines have been made. These are mostly manual and are certainly not apparently dry in operation. Also, these machines do not demonstrate the film throughput or automated operation suitable for the small minilab market. A small minilab is defined as one that can process between 10-20 rolls of 135-36 film every hour when working at full capacity.  
           [0004]    A mobile processor is disclosed in W093/04404. This document describes a “suitcase processor” which is computer controlled. The processor is in the form of a case-like container. The base of the container includes processing units in which film to be processed is accommodated. The lid of the container houses containers which contain chemicals for processing the film. The chemicals can be fed to the processing units in the base by means of valves operable under control of a computer, also within the case-like container. This processor is portable but cannot handle the capacity of a minilab. In addition there is a strong possibility of leakage of the processing chemicals.  
         SUMMARY OF THE INVENTION  
         [0005]    It is an aim of the invention to provide an easily transportable processing machine in which there are no open tanks containing processing solutions.  
           [0006]    According to the present invention there is provided a portable processing apparatus for processing photographic material including a processing chamber housed in a transportable unit, the unit being adapted to house a replaceable sealed cartridge containing the processing solutions in individual containers and a sealed waste container, both the cartridge and the waste container being connectable to the processing chamber via fluid tight valve connectors, substantially no processing solution being held in the processing chamber between processing operations.  
           [0007]    The machine according to the invention is apparently dry, i.e. there are no open tanks containing processing chemical solutions which may leak. It is also easily transportable and the set up time for processing is short. The processing machine may therefore be placed in a multitude of outlets, or events which may not normally be associated with photo-processing. The owner of the processor can maximize the return on his investment in the processor by being able to place his processor wherever there is a market demand for photographs. The processor is also suitable for environments such as ships and trains where the movement thereof would normally interfere with the quality of processing. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0008]    The invention will now be described, by way of example, with reference to the accompanying drawings, in which:  
         [0009]    [0009]FIG. 1 is a schematic view of an embodiment of the invention;  
         [0010]    [0010]FIG. 2 is a side view of the embodiment shown in FIG. 1;  
         [0011]    [0011]FIG. 3 is a schematic view of a second embodiment of the invention; and  
         [0012]    [0012]FIG. 4 is a schematic view of a third embodiment of the invention. 
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0013]    [0013]FIGS. 1 and 2 are schematic views of one embodiment of the invention.  
         [0014]    The processor  2  takes the form of a movable unit, as illustrated in the figures. The unit is in the region of one meter high and has a width and depth of approximately 0.5 meters. These measurements are typical only and are not to be taken as limiting the invention in any way.  
         [0015]    The front of the unit is provided with an LCD display  8  and keypad  10 . An entry door  12  for the film is also provided at the front of the unit. These are provided at a height convenient for the operator.  
         [0016]    At the top of the unit there is provided a hinged lid  4  which lifts upwards. Situated beneath the hinged lid  4  is a recess in which a sealed cartridge  6  is located. The cartridge  6  houses the chemical solutions required by the photofinishing process. The cartridge  6  can consist of an assembly of containers for each of the solutions required for the process. A suitable cartridge would be a Kodak Flexicolor SM™ cartridge. The cartridge  6  is easily placed or plugged into the processor. This can be by means of dry break connectors. Such connectors ensure a fluid tight seal between the cartridge and the processing space. Also no processing fluid is wasted due to leakage. A suitable connector is described in EP 0992451. The cartridge is designed to be replaceable. As the cartridge  6  is a sealed unit there is no danger that there will be any spillage of the processing solutions. The use of sealed cartridges and dry break connectors ensures that the operator is not exposed to any of the processing fluid at any point. There is no danger that the operator of the processor will come into contact with any of the chemicals.  
         [0017]    In the lower part of the unit  2  there is provided an exit slot  14  for the delivery of the processed articles. A waste collection door  16  is also provided in the lower part of the unit  2 . Situated within the unit behind the waste collection door  16  is a waste container  18 . The waste container is a sealed unit in which the solutions which have been used in the processor are stored. The waste container is connected to the processor with dry break connectors as described above with respect to the cartridge  6 . When the waste container  18  is full it may be removed from the unit  2 . As the waste container  18  is a sealed unit there is no danger of any spillage of the used solutions. There is no danger of the operator of the unit coming into contact with the waste solutions.  
         [0018]    It is possible for the supply and waste containers to be in an integral package rather than two separate containers. A suitable package could be a bag-in-box arrangement as disclosed in EP 0738922. Processing solution is fed from the bag via a first dry break connector to the processor and used processing solution is returned to the container via a second dry break connector.  
         [0019]    The main body of the unit  2  houses a rotatable drum processor, not shown. A suitable drum processor is disclosed in GB 0023091.2, the contents of which are herein incorporated. Such a processor can be adapted to be contained within the portable unit  2 . The drum processor disclosed in the reference uses only a small volume of processing solution for each given stage of the process. The small volume of solution is added to the length of material and is spread repeatedly over the entire length thereof. Each stage of the process is done in the same space, each processing solution being added and removed sequentially from the processing space.  
         [0020]    The processor has a cylindrical chamber which is rotated during processing. Film is loaded around the inner circumference of the chamber when the chamber is stationary. A metered amount of processing solution is introduced into the chamber and the chamber rotated. The whole volume of the solution is thus spread over the whole area of the film. Any remaining solution is removed from the chamber at the end of each stage and stored in the waste container until such time as it may be removed from the processing unit and safely disposed of. Although the inclusion of a processor as described in GB 0023091.2 is a preferred embodiment for the invention it will be understood that any suitable processing equipment may be used. The important criteria is that the processor does not feature open tanks full of processing solutions.  
         [0021]    Processors are usually far too heavy to move without special equipment. The processor of the invention has wheels  20  provided at the base of the unit  2 . The wheels give the unit mobility so that is can be wheeled into the position where it is required. At least one of the wheels  20  is provided with braking means  22 . The braking means  22  ensure that the processing unit does not move while processing takes place. FIG. 2 shows a handle  24  provided on the back wall of the unit to facilitate movement. It is of course possible to provide the handle on any suitable surface of the unit.  
         [0022]    Wheels are the preferred mode of transport of the unit. However it will be obvious that any suitable transport means may be used, for example, it would be possible to use an air cushion or such like.  
         [0023]    A power lead  26  extends from the rear of the unit  2 . It is possible however for the processor to use battery power should this be necessary.  
         [0024]    It will be understood that the processing unit will house other devices, such as a motor for rotation of the drum, heaters, pumps, fans, a CPU, etc. For simplicity, only those features which are essential for an understanding of the invention are specifically mentioned and described.  
         [0025]    The unit may be located and set up wherever it is required. The processing unit is provided with power and allowed to warm up. Processing may then take place. The power supply may be from a mains supply if the processor is located indoors or may be from a generator should the processor be located outdoors.  
         [0026]    After the film is processed the processor may be powered down and immediately transported. Thus the processor only needs to be stationary for the processing of the film. If the motion of the processor is relatively constant, such as on a train or a ship, then the film may be processed while the processor is moving. Once the photographic material has been processed the solution used goes into the waste container. Therefore when the material is not being processed the processing chamber is essentially empty. The portable processor can therefore be shaken or tipped or rolled on wheels without risk of liquid spill.  
         [0027]    [0027]FIG. 3 is a schematic view of a second embodiment of the invention. This embodiment includes a printer processor within the portable unit.  
         [0028]    The unit  30  comprises both a film and paper processor and is in the region of one meter high and has a width of approximately 0.7 meters and a depth of approximately one meter. These measurements are typical only and are not to be taken as limiting the invention.  
         [0029]    The top of the unit  30  is provided with a film entry door  32  for the film to be entered into the unit. Behind the film entry door  32  is a film exit container  34  including a film exit slot  35 . A keypad  36  is provided towards the front of the top of the unit  30 . A VDU  38  is located behind the keypad  36 . A paper cassette  40  for holding the paper is provided towards the back of the unit  30 . A hinged flap  42  is provided at the front of the unit  30 . A chemical cartridge as described above may be inserted through the flap  42  for connection with the processor.  
         [0030]    The lower part of the unit  30  is provided with a waste collection door  44  for the removal of waste solution as described above. A print delivery door  46  may also be located at the front of the lower part of the unit  30 .  
         [0031]    As described above, the unit  30  houses a rotatable drum processor. In this embodiment the unit  30  also houses a scanner and a paper processor. The paper processor may, for example, be a surface application processor, a spray application processor or an ink jet printer. A surface application processor is disclosed in pending EP application no. 00204540.9. A spray application processor is disclosed in EP 0984324A1. These are examples only of suitable processors. Any paper processor which does not have open tanks of solution may be incorporated within the unit  30 .  
         [0032]    The base of the unit  30  is provided with wheels  48 . A handle, not shown, is also provided on the back wall of the unit to facilitate movement.  
         [0033]    When exposed film is brought to the unit  30  the operator inserts the film into the film entry door  32 . The film is processed as described in relation the embodiment shown in FIG. 1. However, in unit  30  the film is scanned prior to exiting the unit from film exit slot  35 . The scanned images may be seen on VDU  38 . The operator uses the keypad  36  to determine the software to be used for processing the film and also to manipulate the scanned images seen on the VDU  38 . The process is as known in any conventional combined film and paper processor, e.g. a Gretag™ minilab.  
         [0034]    It will be understood that the film and paper processor as described is an example only. The important features are that both the film and paper processors do not have open tanks. The configuration of the parts of the unit described should not be taken as limiting the invention in any way.  
         [0035]    It will be understood that it is not essential for one portable unit to accommodate both the processor and the printer. It is possible to have them in separate portable units.  
         [0036]    [0036]FIG. 4 is a schematic view of a separate portable paper processor that may be used in combination with a portable processor as described with reference to FIGS. 1 and 2.  
         [0037]    The paper processor unit  50  is in the region of one meter high, has a width of approximately 0.5 m and a depth of approximately one meter. These measurements are typical only.  
         [0038]    The top of the unit  50  is provided with a film entry door  52  for processed film to be entered into the unit. Behind the film entry door  52  is a print delivery exit  54 , for example a conveyor. A keypad  56  is provided towards the front of the top of the unit  50 . A VDU  58  is located behind the keypad  56 . A paper cassette  60  for holding the paper is provided towards the back of the unit  50 . A hinged flap  62  is provided at the front of the unit  50 . A chemical cartridge as described above may be inserted through the flap  62  for connection with the processor.  
         [0039]    The lower part of the unit  50  is provided with a waste collection door  64  for the removal of waste solution as described above.  
         [0040]    In this embodiment the unit  50  houses a scanner and a paper processor. The paper processor may be any suitable processor, as described above.  
         [0041]    The base of the unit  50  is provided with wheels  66  A handle, not shown, is also provided on the back wall of the unit to facilitate movement.  
         [0042]    It will be understood by those skilled in the art that the above described processors are examples only of the invention. The essential features of the invention are that the processor is transportable and that the processor is an “apparently dry” processor, i.e. there are no open tanks full of processing solutions.  
         [0043]    The invention has been described in detail with reference to preferred embodiments thereof. It will be understood by those skilled in the art that variations and modifications can be effected within the scope of the invention.  
       Parts List  
       [0044]    2 Processor unit  
         [0045]    4 lid  
         [0046]    6 cartridge  
         [0047]    8 LCD display  
         [0048]    10 keypad  
         [0049]    12 door  
         [0050]    14 exit slot  
         [0051]    16 door  
         [0052]    18 container  
         [0053]    20 wheel  
         [0054]    22 braking means  
         [0055]    24 handle  
         [0056]    26 power lead  
         [0057]    28 unit  
         [0058]    30 door  
         [0059]    32 container  
         [0060]    34 exit slot  
         [0061]    36 keypad  
         [0062]    38 VDU  
         [0063]    40 cassette  
         [0064]    42 flap  
         [0065]    44 door  
         [0066]    46 door  
         [0067]    48 wheel  
         [0068]    50 unit  
         [0069]    52 door  
         [0070]    54 exit  
         [0071]    56 keypad  
         [0072]    58 VDU  
         [0073]    60 paper cassette  
         [0074]    62 flap  
         [0075]    64 door  
         [0076]    66 wheel