Canon irc2570, irc3170, irc3100 Handbuch

5-57

a. Solid Density of Individual Colors and Balance Among Colors

- the density must not be appreciably low (too light).

- if the density of a specific color is too low (too light), suspect a fault in the developing system.

- if the density of all colors is low (too light), suspect a fault in the laser exposure system and the transfer block.

b. While Line

If a white line is found in a specific color, suspect a fault in the development system of that particular color.

c. Uneven Density at the Front/Rear

If uneven density is found in a specific color, suspect a fault in the development system of that particular color. If it is found in all colors, suspect a fault in the drum

unit, ITB unit, and laser exposure system.

F-5-4

iR C3100 /  /  / iR C3100N /  /  /  / iR C2570 /  / iR C3170 /  / iR C3170i / iR C2570i

Use this test print to check the gradation of Y, M, C, and Bk at once.

F-5-5

iR C3100 /  /  / iR C3100N /  /  /  / iR C2570 /  / iR C3170 /  / iR C3170i / iR C2570i

Use this test print to check the gray balance, gradation of individual colors (YMCBk), and fogging.

a. Gray Balance

Check the grayscale area to see if the densities of all colors are even.

b. Gradation

Check the gradation of individual colors (YMCBk) and for any difference in color.

c. Fogging

If fogging is found in the white area, suspect a fault in the developing system, a fault in the drum unit, and poor adjustment of the laser exposure system.

2.5

1.5mm

2.5

1.5mm