Canon i-SENSYS MF744Cdw

Overview

Although the nip width of the Fixing Assembly cannot be adjusted with this machine, it can be checked. By checking the nip width when fixing failure occurs, it is possible to judge whether there is a problem with the Fixing Assembly.

Field Remedy

Check the nip width of the Fixing Assembly by the following procedure.

1. Print a solid black image on an A4/LTR size paper using the cartridge of this machine and bring it to the customer site.
2. Load the solid black printed paper with its printing side facing down in a cassette of the machine.
3. Use an external device to print a solid white image.
4. Open the Front Cover after approx. 25 seconds, leave it for 10 seconds or more, and then take out the printed paper.
5. Measure the widths of the glossy part of the toner on the printed paper, and check that they are within the range as follows.
   • Center (a): 6.0 to 7.0 mm
   • Edge (b) and (c): 6.0 to 7.0 mm each
   • Difference between left and right ( | b - c | ): 1.0 mm or less