7 is a representation of another foreground/background pattern selection ДЇIGS. 6 is a graphical representation of an alternate foreground/background pattern selection ДЇIG. 5 is a graphical representation of one of the foreground/background pattern combinations of FIG. 4 is a graphical representation of the foreground and background patterns and their possible combinations, utilized to generate the void pantographs ДЇIG. 3 is a graphical depiction of various dot configurations and sizes utilized in the present invention ДЇIG. 2 is a graphic illustration of a plurality of pantographs generated by the system of FIG. 1 is a pictorial illustration of a computer printing system utilizing the present invention ДЇIG. We have one here, but for the life of me I can't find it.ДЇIG. The void pantographs are made as a 2 line screen 1 bit tiff. The exact nature of this invention, as well as the objects and advantages thereof, will become readily apparent from consideration of the following specification in conjunction with the accompanying drawings in which like reference numerals designate like parts throughout the figures thereof and wherein:ДЄ method of generating a large number of different void pantographs quickly and easily enables selecting a void pantograph that works best with a particular copy machine make and model. By using different combinations of two different dot patterns to generate the foreground patterns and two different dot patterns to generate the background patterns, the number of different pantographs that can be generated is almost limitless. The background dot patterns are generated by varying the dot size and dot placement on an x-y grid. The foreground dot patterns are generated by varying the dot size, and dot placement in an x-y grid. The present invention provides a method of generating a large, almost limitless, number of different void pantographs, quickly and easily, which can be tested on the printer and copier combination of interest, allowing selection of a VP that works best for that combination.ДЄ large number of different void pantographs are generated for testing with a particular make and model of machine in order to select the void pantograph that works best with a particular make and model machine. The designing of VPs for the mobile printing world of today, which involves electro photographic printing methods presents an almost insurmountable problem because of the great variety of printing machines. Void pantographs are traditionally designed for use with a specific printing technology, such as flexo, gravure, offset or screen printing, for example. Void pantographs (VPs) have been an important part of the security printing industry for quite a while.

Aronoff and Margaret Sturgill, Hewlett-Packard Labs, 3404 E. * Paper in the Heavy category may not run through a standard printer.The present invention relates to void pantographs and more particularly, pertains to a method of generating a very large number of different void pantographs. A great weight for letter pressing.Д¬ommon weights not very common 134lb cover-236lb cover. 300gsmДЎ2: End of the road, these papers are extremely heavy and usually require specialty equipment to print, not your everyday home printer. 218gsm Heavy weights 10-12ДЎ0: Looking for a heavy business card? This is the sheet for you! At this weight you start to max out most common copiers, so check that your machine can handle it!ДЎ1: Very heavy cover weight, great for super thick invitations and business cards that will take up a whole lot of space in a wallet.Д¬ommon weights 120lb cover, 130lb cover. This is the perfect weight for items that are going to take some wear and tear such as menus, information sheets and table tents.Д¬ommon weights 80lb cover. 165gsmДЁ: Slightly lighter than your average business card. 150gsmД§: A light cardstock, good for self mailing.Д¬ommon weights 60lb cover, 110lb index. Typical weight for those magazine inserts bugging you to subscribe.Д¬ommon weights 90lb index, 67lb bristol, 8pt. 135gsm Medium weights 6-9Д¦: The lightest of the cardstock weights. Great when you want to make an impression with news letters or term papers.ДЈ: The weight of a nice piece of stationery or brochure, excellent for double sided printing and presentations.Д¤: The be all end of all of light paper weights, easily print double sided with minimal show through even when held up to light.ДҐ: The heaviest of the text weights, any heavier and it would be considered a cardstock! Excellent for two sided printing and multiple paged brochures.Д¬ommon weights 100lb text. 75gsmДў: Your typical stationery weight, a bit heavier than your everyday copy paper and thus a bit more opaque.

This is the weight youвЂ™d find in most copiers!Д¬ommon weights 20lb text/50lb bond. 1: Standard copy paper and some other papers that are just a tiny bit lighter.

Void pantograph i-130