Canon iR C2880 series, Руководство по обслуживанию

Страница: 438 / 610

Chapter 15
15-4
15.2.6 Grid (TYPE=6)
0014-3140
/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
Use this text print to check color displacement, right angles, and straight lines.
- Color Displacement
If color displacement is found, suspect a scar in the ITB and a fault in the drum unit.
- Right Angle, Straight Lines
If the right angles or straight lines are not correct, suspect a fault in the laser exposure system, a fault in the shape of the registration (inside/ outside) roller, and a
fault in the secondary transfer outside roller.
F-15-3
15.2.7 MCYBk Horizontal Stripes (TYPE=10)
0014-3149
/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
Use this test print to check the density of dark areas of individual colors, balance among colors, and white lines associated with development.
(1) Solid Density of Individual Colors and Balance Among Colors
(a) the density must not be appreciably low (too light).
(b) if the density of a specific color is too low (too light), suspect a fault in the developing system.
(2) While Line
If a white line is found in a specific color, suspect a fault in the development system, transfer system and drum of that particular color.
(3) Uneven Density at the Front/Rear
If uneven density is found in a specific color, suspect a fault in the development system, transfer system and drum of that particular color.
F-15-4
15.2.8 64-Gradation (TYPE=12)
0014-3153
/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
Use this test print to check the gradation of Y, M, C, and Bk at once.
2.5 1.5mm
2.5 1.5mm