Step two Divide the totals by six (it’s always six, no matter how many characters are in the Postcode), and note the amount left over. In this example:
Step one Use the table to find row and column references for the characters in the Postcode and Delivery Point Suffix. Note that the sixth row/column is numbered 0 not 6.
• 6 goes into 22 three times with 4 left over. • 6 goes into 27 four times with 3 left over.
Step three Refer these ‘left over’ figures back to the table, finding the character where they intersect. For example, row 4 and column 3 gives the checksum character K. Even if your ‘left over’ character is zero (i.e. 6 into 24 goes four times with zero left over), this will relate to a row or column on the grid. Note: If you need to print a separate barcode for your own use on the front of a mailing item, then you must contact your Whistl Account manager for advice on positioning to ensure that this does not affect the readability of the CBC.
For example the letter S is in row 5 and column 5. Write these down in a grid like this (we’ve used an example Postcode of SN3 4RD and DPS of 1A), then add them up:
Using Window Envelopes Windows may be included on envelopes for a variety of reasons so it is necessary to ensure that the inclusion of a window(s) does not physically impact the mail piece in such a way that may prevent our machines from processing it. The following window options are permitted:
Option to have a window on the front
Option to have a window on the back
Example of Use
Requirements
The barcode and address is read through the window The barcode and address is printed on the front of the envelope and the window on the back is used for non-address information The barcode and address is read through one window on the front and the window on the back is used for non-address information
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The front face is defined as the side containing the indicia and the delivery address
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