at the required size; rasters will be printed too close together or too far apart.
The calculations take you through a series of steps as shown below. There is also a worked
example and a problem solving section afterwards.
Step 1: Define the required raster pitch for the application.
Step 2: Select the encoder, gearing and pitch factor that gives an actual raster pitch close to that
required.
Step 3: Check the calculated print performance (size and speed) is adequate.
Step 4: Calculate the printer width from the pitch factor and enter it.
Step 5: Check print samples for performance.
Step 1: Define the Required Raster Pitch for the Application
For each raster type on each printhead type there is a drop pitch which gives the best quality print,
i.e. 1:1 aspect ratio at the default printer settings. This value is known as the ideal pitch; a table
later in the section lists them. For a particular application you may want to choose a different pitch,
bearing in mind that the aspect ratio can be adjusted using the Print Height setting (see “Changing
the System Setup”).
The required raster pitch is calculated by:
Required raster pitch (mm)
Printed Length(mm)
Number of Characters x Character Width (rasters)
That is: Printed Length(mm)
Number of Rasters in Message
Where:
Printed length = length of message on product. This must be less than the length of any area left
clear for printing.
Number of characters = number of characters in the longest line of the message.
Character width = number of rasters in each character; see the following table.
(Alternatively, obtain the number of rasters in the message by creating the message on the printer
and noting the x-position of the cursor just after the end of the message.)
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