Konica Minolta bizhub C658 Service Manual page 1797

bizhub C658/C558/C458/C368/C308/C258
* When the image of magenta is longer than the image of black (K)
[2]
[1]
[1] Rotational direction of the transfer belt
[3] Before correction
[5] Black (K)
[7] After correction
(5) Correction of color shift in the sub scan direction
• If the image of each color (Y, M, C) is misaligned with respect to the image of black (K) in the sub scan direction, changing the write start
timing in the sub scan direction can correct the color shift. Color shift correction needs to be performed separately for the respective
colors (Y, M, C).
• Color shift correction control is activated when the image stabilization sequence is started.
* When the image of magenta is misaligned with respect to the image of black (K) in the sub scan direction
[2]
[1]
[1] Rotational direction of the transfer belt
[3] Before correction
[5] Color shift
[7] After correction
(6) Skew (image skew)
• If the image of each color (Y, M, C) is tilted against the image of black (K) in the sub scanning direction, the image skew can be corrected
by tilting the G3 lens of the print head unit. Image skew correction needs to be performed separately for the respective colors (Y, M, C).
• Image skew is adjusted at timing when the image stabilization sequence is started.
* When the image of magenta is tilted against the image of black (K)
[2]
[1]
[1] Rotational direction of the transfer belt
[3] Before correction
O THEORY OF OPERATION bizhub C658/C558/C458/C368/C308/C258 > 3. WRITE
[3] [7]
[6]
[5] [4]
[6]
[3] [7]
[6] [4]
[5]
[3] [7]
[4]
[6]
[5]
O-22
[8]
[2] Transfer belt
[4] Magenta (M)
[6] Color shift
[8] No color shift
[8]
[2] Transfer belt
[4] Black (K)
[6] Magenta (M)
[8] No color shift
[8]
[2] Transfer belt
[4] Black (K)
SECTION (PH SECTION)