Abstract: The number of dots per inch or resolution may be specified within a image on a document or within a postal indicia and later checked to determine if the image or document or the postal indicia has the correct resolution. The foregoing is accomplished by specifying that the image on the substrate will be printed with n plus m dots per inch; rotating a ink jet head having n nozzles per inch about a axis parallel to a substrate by an angle &thgr; so that the ink jet head will produce an image on the substrate having (n/cos &thgr;) dots per inch; storing in a data center that the specified image will be printed with (n/cos &thgr;) dots per inch; analyzing the image to determine if the image has (n/cos &thgr;) dots per inch; and comparing the number of dots per inch in the analyzed image with the number of dots per inch stored for the specified image to determine if they have the same number of dots per inch.

Abstract: A method for producing a composite image that includes a first and second image. The second image embeds information in the first image in a manner that the second image will change in appearance when the first and second images are scanned or photocopied.

Abstract: A method for assigning unique printer resolutions or signatures, i.e., a unique number of dots per inch, to a class, or models of printers or lines of postage meters. The number of dots per inch or resolution may be specified within a image on a document or within a postal indicia and later checked to determine if the image on document or the postal indicia has the correct resolution. The foregoing would be able to detect an image or postal indicia that was scanned into a computer and printed with a printer that did not have the number of dots per inch specified in the image or postal indicia.

Abstract: A method for detecting a copy of a composite image that includes a first image and a second image that has information embedded in the second image that will change in appearance when the first and second images are scanned or photocopied. The foregoing is accomplished by scanning the first and second images, and detecting a change in appearance of the second image that indicates the first and second images were scanned or photocopied.

Abstract: A method that enables the recipient to receive notification of the letter mail, flats and/or packages (mail) that the recipient is going to receive prior to the delivery of the mail. The recipient is then able to inform a post or courier e.g., Federal Express®, Airborne®, United Parcel Service®, DHL®, etc. of the manner in which the recipient would like the mail delivered. The post and courier hereinafter will be referred to as “carrier”. For instance, the recipient may want the mail physically delivered to their house faster or slower, or the mail physically redirected to the recipient's temporary address, or physically delivered to the recipient's agent, or physically delivered to the recipient's attorney, or physically returned to the mailer, or have the carrier open the physical mail and have the post e-mail or fax the contents of the envelope to the recipient and/or parties designated by the recipient.

Abstract: A method that enables the recipient to receive notification of the letters, flats and/or packages (mail) that the recipient is going to receive prior to the delivery of the mail. The recipient is then able to inform a post or courier, e.g., Federal Express®, Airborne®, United Parcel Service®, DHL®, etc., of the manner in which the recipient would like the mail delivered if the sender elects to permit the recipient to divert the mail. The post and courier hereinafter will be referred to as “carrier”. For instance, the recipient may want the mail physically delivered to their house faster or slower, or the mail physically redirected to the recipient's temporary address, or physically delivered to the recipient's agent, or physically delivered to the recipient's attorney, or physically returned to the mailer, or have the carrier open the physical mail and have the post email or fax the contents of the envelope to the recipient and/or parties designated by the recipient.

Abstract: An ink supply system for a plurality of ink jet printheads offset from each other at different elevations includes an ink reservoir having a single outer casing and a plurality of individual ink wells inside of the casing, the plurality of individual ink wells arranged in a stepped relationship from each other and extending from a first ink well at a highest elevation to a last ink well at a lowest elevation, each of the plurality of individual ink wells supplying ink to and being lower in elevation than a corresponding one of the plurality of ink jet printheads for the purpose of controlling the negative pressure applied to the printheads to properly control the meniscus position at the nozzles for proper operation of the printheads; an ink supply having ink stored therein; and structure for supplying ink to the first ink well.

Abstract: A thermally insulated calorimeter includes a vessel with a chamber containing liquid nitrogen. The vessel is formed of four walls arranged proximately in parallel, each pair of adjacent walls delimiting a space. An inner wall forms the chamber, two partition walls are between the inner wall and an outer wall which is exposed to atmosphere. Each space contains a gas at atmospheric pressure. Each spacing is selected to minimize heat transfer from the atmosphere to the inner chamber, by establishing a maximum spacing for which the air is stagnant. A cover for the vessel has a set of walls with spacings similar to those of the vessel. Sealing for such spacing is provided for a removable main cover and a removable top cover for the calorimeter sample block.