HP Stitch S1000 User Guide - Page 98

Possible difficulties with printhead alignment, A pattern shows more than one good correction

Page 98 highlights

Pattern K L M N O P Q R S T U V Affected printhead Y0 C0 M0 Y0 K1 C1 M1 Y1 K1 C1 M1 Y1 Correction type Scan axis, color to color Substrate axis, color to color Substrate axis, color to color Substrate axis, color to color Scan axis, printhead to printhead Scan axis, printhead to printhead Scan axis, printhead to printhead Scan axis, printhead to printhead Substrate axis, printhead to printhead Substrate axis, printhead to printhead Substrate axis, printhead to printhead Substrate axis, printhead to printhead Take this into account when trying to compensate for any misalignment observed in the printhead alignment diagnostics plot. The central correction is 20 (15 for A), being the default value for each pattern in the Internal Print Server. Possible difficulties with printhead alignment A pattern shows more than one good correction Occasionally you may find that a pattern has two or more possible good corrections, separated by two or more steps. This could be due to wrinkles on the substrate that change the printhead-to-paper spacing along the scan axis. To avoid this, ensure that the substrate is cold before starting the alignment, and advance it at least 70 cm (28 in) to ensure that it is not deformed by the previous job. Printhead alignment diagnostics plot The printer offers a printhead alignment diagnostics plot, to assess the quality of the current printhead alignment. To print it, in the Internal Print Server click Printer > Printhead alignment > Verify alignment > Print. NOTE: You can use the diagnostics plot to check printhead alignment, then fine-tune the values by following the instructions on the diagnostics plot. Also, if the substrate is similar to one that you already use, you can print only the diagnostic plot (much faster than printhead alignment) and fine-tune the values in the Internal Print Server. IMPORTANT: The diagnostic plot is not designed to fine-tune automatic printhead alignment; in that case, the diagnostic plot is only used to check printhead alignment. The next picture shows an example of the diagnostics plot. Each part is described following the terminology of the manual alignment. Row0 is the row of printheads closer to the substrate output, while Row1 is the row of printheads closer to the substrate input. In the same plot there is an area in which the carriage layout is described with the appropriate labels, just for reference. 92 Chapter 8 Printer calibration ENWW

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Pattern
Affected printhead
Correction type
K
Y0
Scan axis, color to color
L
C0
Substrate axis, color to color
M
M0
Substrate axis, color to color
N
Y0
Substrate axis, color to color
O
K1
Scan axis, printhead to printhead
P
C1
Scan axis, printhead to printhead
Q
M1
Scan axis, printhead to printhead
R
Y1
Scan axis, printhead to printhead
S
K1
Substrate axis, printhead to printhead
T
C1
Substrate axis, printhead to printhead
U
M1
Substrate axis, printhead to printhead
V
Y1
Substrate axis, printhead to printhead
Take this into account when trying to compensate for any misalignment observed in the printhead alignment
diagnostics plot.
The central correction is 20 (15 for A), being the default value for each pattern in the Internal Print Server.
Possible difficulties with printhead alignment
A pattern shows more than one good correction
Occasionally you may find that a pattern has two or more possible good corrections, separated by two or more
steps. This could be due to wrinkles on the substrate that change the printhead-to-paper spacing along the scan
axis. To avoid this, ensure that the substrate is cold before starting the alignment, and advance it at least 70 cm
(28 in) to ensure that it is not deformed by the previous job.
Printhead alignment diagnostics plot
The printer offers a printhead alignment diagnostics plot, to assess the quality of the current printhead
alignment. To print it, in the Internal Print Server click
Printer
>
Printhead alignment
>
Verify alignment
>
Print
.
NOTE:
You can use the diagnostics plot to check printhead alignment, then fine-tune the values by following
the instructions on the diagnostics plot. Also, if the substrate is similar to one that you already use, you can print
only the diagnostic plot (much faster than printhead alignment) and fine-tune the values in the Internal Print
Server.
IMPORTANT:
The diagnostic plot is not designed to fine-tune automatic printhead alignment; in that case, the
diagnostic plot is only used to check printhead alignment.
The next picture shows an example of the diagnostics plot. Each part is described following the terminology of
the manual alignment. Row0 is the row of printheads closer to the substrate output, while Row1 is the row of
printheads closer to the substrate input. In the same plot there is an area in which the carriage layout is
described with the appropriate labels, just for reference.
92
Chapter 8
Printer calibration
ENWW