HP DesignJet T850 DesignJet T850 Printer Series DesignJet T950 Printer SeriesU - Page 141

Small color differences between adjacent scanbars

Get HP DesignJet T850 PDF manuals and user guides View all HP DesignJet T850 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 141 highlights

5. If the problem persists, proceed to analyze areas I and J of the diagnostic plot across modules =, 1 and 3. In the three examples below, the top example is ideal, the middle example can be regarded as acceptable; but, if you see something similar to the bottom example (or worse), call HP support and report "grain in area fills". Small color differences between adjacent scanbars When scanning wide plots, sometimes slightly different colors can be seen at both sides of the junction between two scanbars. This issue, if present, can be easily seen by analyzing patterns A and G of the diagnostic plot at the intersection between scanbars. Here are some examples: NOTE: The black arrow indicates the scanning direction. Sometimes the color mismatch between adjacent modules can be enormous, showing a serious scanner malfunction, as in the following example. If this occurs, see Completely wrong colors on page 141. 132 Chapter 16 Troubleshooting copy and scan quality issues (only MFP)

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
  • 177
  • 178
  • 179
  • 180
  • 181
  • 182
  • 183
  • 184
  • 185
  • 186
  • 187
  • 188
  • 189
  • 190
  • 191
5.
If the problem persists, proceed to analyze areas I and J of the diagnostic plot across modules =, 1
and 3. In the three examples below, the top example is ideal, the middle example can be regarded as
acceptable; but, if you see something similar to the bottom example (or worse), call HP support and
report “grain in area fills”.
Small color differences between adjacent scanbars
When scanning wide plots, sometimes slightly different colors can be seen at both sides of the junction
between two scanbars. This issue, if present, can be easily seen by analyzing patterns A and G of the
diagnostic plot at the intersection between scanbars.
Here are some examples:
NOTE:
The black arrow indicates the scanning direction.
Sometimes the color mismatch between adjacent modules can be enormous, showing a serious
scanner malfunction, as in the following example. If this occurs, see
Completely wrong colors
on page
141
.
132
Chapter 16
Troubleshooting copy and scan quality issues (only MFP)