Canon QY8-1360-000 Service Manual page 59

BJC-7100
3) Aligning the print heads
Because two BJ cartridges are installed in the printer, differences in how they are
secured and in the cartridges themselves can shift the way ink is ejected onto the
paper. To even out any differences and ensure satisfactory print quality, follow the
procedure below for adjusting the relative positions of the print heads after
completing the setup procedure on the PC.
1) Load two or more sheets of standard A4-size plain paper into the sheet feeder.
2) Following the instructions on the Printer Driver's control sheet, print a Print Head
Alignment Pattern.
3) Check the printed patterns to select the optimum A (vertical), B (horizontal), C
(bidirectional 1) and D (bidirectional 2) alignment values.
4) Following the instructions on the Printer Driver's control sheet, print a High-
Resolution Adjustment Pattern.
5) Check the printed pattern to select the optimum E (horizontal 1), F (bidirectional
1), G (horizontal 2) and H (bidirectional 2) adjustment.
6) Following the instructions on the Printer Driver's control sheet, quit the print
head alignment procedure.
7) You can print the nozzle check pattern to check the print head alignment values
after completing this procedure. To print the nozzle check pattern, refer to 3.8
Service Mode (Page 3-21) .
Standard Mode
Fast Mode
(A) Vertical alignment
value (-3 to +3)
(B) Horizontal alignment
value (-7 to +7)
(E) Horizontal 1
alignment value
(-3 to +3)
(F) Bidirectinal 1
alignment value
(-3 to +3)
Figure 3-7 Checking Print Head Alignment
3-5
Part 3: Operating Instructions
(C) Bidirectional 1
alignment value
(-7 to +7)
(D) Bidirectional 2
alignment value
(-7 to +7)
(G) Horizontal 2
alignment value
(-3 to +3)
(H) Bidirectional 2
alignment value
(-3 to +3)