Geometrical instruments – Gauge – Collocating
Patent
1986-11-19
1988-11-22
Haroian, Harry N.
Geometrical instruments
Gauge
Collocating
33615, B41B 100, G03B 2702
Patent
active
047855495
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
The present invention relates to a method and apparatus for producing and editing microfiche masters.
FIELD OF THE INVENTION
Microfiche masters typically comprise a plurality of film frames of reduced size mounted in an array by any suitable means in such manner that reproductions of the master can be made for dissemination to users. However, in some circumstances frames in a particular microfiche master may require editing so that information provided to users is current. This applies particularly to maps of urban areas showing the location of public utilities such as drains and sewers, and power and gas supply conduits. These public utilities are constantly being modified in a typical urban area and thus the master maps require amendment to keep them up to date. The information from the master maps is frequently stored on microfiche so as to reduce handling of the masters and to facilitate reproduction of the information. In the past there has not been available a convenient means for editing microfiche masters.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention there is provided a method for the production and editing of microfiche masters which comprises firstly establishing on a transparent adhesive backing sheet a plurality of reduced size exposed film frames each located in a particular location and orientation, identifying the need to replace one of the film frames on the adhesive backing with an edited substitute film frame, removing the film frame to be replaced from the adhesive backing sheet, and placing an apertured device over the place from which the film frame was removed so as to provide a guide for placement of the substitute film frame in the same location as the removed film frame.
In accordance with another aspect of the present invention there is provided a template apparatus for use with production and editing of microfiche masters, which comprises a base plate arranged to receive and retain a microfiche master to be edited in a precise location, and a template means containing an aperture arranged to fit over an area of the master so as to provide a guide for placement of an exposed film frame.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is an exploded, perspective view of a template apparatus in accordance with the present invention;
FIG. 2 is an upper perspective view of a punch which can be used in the method of the present invention; and
FIG. 3 is a view, similar to FIG. 1, showing the template apparatus in use in editing a microfiche master.
DESCRIPTION OF THE INVENTION
In the production of a microfiche master, original source documents are typically microfilmed at a predetermined reduction factor. The exposed frames are then cut out from the microfilm by any suitable means. The cut out exposed frames may then be placed on a clear adhesive base sheet with the emulsion side of the frame uppermost. The clear adhesive base sheet may conveniently be formed of a plastics material. Essentially any material which will adhere to the exposed frames, is suitable. An especially suitable product is sold by Molex Microfilm Products, Inc. under the name "Molex-Fiche". Molex-fiche is a clear flexible plastics material which has been surface treated to enable exposed film frames to adhere to it.
The exposed frame may be placed on the clear adhesive base sheet by any convenient means such as by use of the template apparatus of FIG. 1. The apparatus of FIG. 1 comprises a rectangular flat base plate 10 having mounted thereon a first pair of upstanding locating pins 12 adjacent one longitudinal edge of the base plate 10. At a point between the pins 12 the adjacent edge of the base plate 10 is formed with an arcuate recess 14. The pins 12 are used to locate the clear adhesive base sheet, the location of which is shown by the dotted line 16. The base sheet has formed in it a pair of apertures corresponding to the pins 12 such that t
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Brown Albert M. B.
Ellis Arthur R.
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