Division (c) Job Structure

This section describes how to determine the number of images per job to use when measuring a product under the TEC test procedure, and jobs per day for the TEC calculation.

For purposes of this test procedure, the product speed used to determine the job size for the test is the manufacturer's reported maximum claimed simplex speed for making monochrome images on standard-sized paper (8.5″ × 11″ or A4), rounded to the nearest integer. This speed will also be used for reporting purposes as the Product Speed of the model. The default output speed of the product, which is to be used in the actual testing, is not measured and may differ from the maximum claimed speed due to factors such as settings for resolution, image quality, printing modes, document scan time, job size and structure, and paper size and weight.

Fax machines should always be tested with one image per job. The number of images per job to be used for all other IE products is to be computed according to the following three steps. For convenience, Table 8 provides the resultant images per job computation for each integral Product Speed up through 100 images per minute (ipm).

1. (i)

   Calculate the number of jobs per day. The number of jobs per day varies with Product Speed:

   For units with a speed of eight ipm or less, use eight jobs per day.

   For units with a speed between eight and 32 ipm, the number of jobs per day is equal to the speed. For example, a 14 ipm unit uses 14 jobs per day.

   For units with a speed of 32 ipm and above, use 32 jobs per day.

2. (ii)

   Calculate the nominal amount of images per day ^f1 from Table 5. For example, a 14 ipm unit uses ${\mathrm{0.50\; \times \; 14}}^2$ , or 98 images per day.

   Table 5
   Imaging Equipment Job Table
   Product type	Rating to use	Formula (images per day)
   Monochrome (except fax)	monochrome speed	$${\mathrm{0.50 \times \; ipm}}^2$$
   Colour (except fax)	monochrome speed	$${\mathrm{0.50 \times \; ipm}}^2$$

3. (iii)

   Calculate the number of images per job by dividing the number of images per day by the number of jobs per day. Round down (truncate) to the nearest integer. For example, a figure of 15.8 should be reported as 15 images per job, rather than rounding to 16 images per job.

   For copiers below 20 ipm, there should be one original per required image. For jobs with large numbers of images, such as those for machines greater than 20 ipm, it may not be possible to match the number of required images, particularly with limits on the capacity of document feeders. Therefore, copiers 20 ipm and above may make multiple copies of each original as long as the number of originals is at least ten. This may result in more images being made than required. As an example, for a 50 ipm unit that requires 39 images per job, the test may be done with four copies of ten originals or three copies of 13 originals.