HP Scitex LX850 HP Scitex LX850 & LX820 Printers: Maintenance and troubles - Page 83

Marks on the substrate, Substrate jams, The printer cannot detect the Image Registration Line

Get HP Scitex LX850 PDF manuals and user guides View all HP Scitex LX850 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 83 highlights

Double-sided printing Marks on the substrate In some cases, the already-printed Side A could be marked while printing Side B, mostly due to friction between the printed substrate side and the print platen. The severity of the marks depends on the substrate and on the print settings. You are recommended to proceed as follows to avoid marking Side A in this way. 1. Reduce the vacuum level when printing Side B to reduce friction between the platen and the substrate. 2. Reduce the substrate tension when printing Side B. 3. You could try increasing the curing/drying time when printing Side A to improve ink adherence. Substrate jams 1. Any substrate jams experienced seen while printing Side A can be solved using the standard procedures described in the Handling Substrate chapter see The substrate has jammed on page 49 2. The thermal heat applied to the substrate while printing the side A, could generate plastic deformations, that remain will printing Side B. Those deformations, and depending on the substrate used, could generate substrate jams while printing the side B. To avoid Substrate Jams while printing double-sided: a. If you can reduce the curing and heating temperature while printing Side A and B. b. Increase the Pen to paper space while printing Side B. c. Increase substrate tension while printing Side B. d. Use substrate diverters in Side B. e. If you can use another substrate less sensitive to thermal heat. The printer cannot detect the Image Registration Line In some cases the detection of the Image Registration Line (dotted or continuous) could cause the system error 78.7:01, use the following procedure to troubleshoot the issue. 1. Check that the registration line is positioned as described in the User's Guide at the beginning of the platen. 2. Check that Side A of the substrate is clean. 3. Check that the substrate-advance sensor is clean: see Clean the substrate-advance sensor on page 33. 4. Check that you are printing in single-job mode, as this option is not enabled for queue mode. 5. Check that the substrate is capable of being detected. If it is translucent, or not white enough, the sensor cannot detect it. 6. LX850 only: Ensure that the ink collector kit is not installed. ENWW Marks on the substrate 77

  • 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
Marks on the substrate
In some cases, the already-printed Side A could be marked while printing Side B, mostly due to friction
between the printed substrate side and the print platen. The severity of the marks depends on the
substrate and on the print settings. You are recommended to proceed as follows to avoid marking Side
A in this way.
1.
Reduce the vacuum level when printing Side B to reduce friction between the platen and the
substrate.
2.
Reduce the substrate tension when printing Side B.
3.
You could try increasing the curing/drying time when printing Side A to improve ink adherence.
Substrate jams
1.
Any substrate jams experienced seen while printing Side A can be solved using the standard
procedures described in the Handling Substrate chapter see
The substrate has jammed
on page
49
2.
The thermal heat applied to the substrate while printing the side A, could generate plastic
deformations, that remain will printing Side B. Those deformations, and depending on the
substrate used, could generate substrate jams while printing the side B. To avoid Substrate Jams
while printing double-sided:
a.
If you can reduce the curing and heating temperature while printing Side A and B.
b.
Increase the Pen to paper space while printing Side B.
c.
Increase substrate tension while printing Side B.
d.
Use substrate diverters in Side B.
e.
If you can use another substrate less sensitive to thermal heat.
The printer cannot detect the Image Registration
Line
In some cases the detection of the Image Registration Line (dotted or continuous) could cause the system
error 78.7:01, use the following procedure to troubleshoot the issue.
1.
Check that the registration line is positioned as described in the
User's Guide
at the beginning of
the platen.
2.
Check that Side A of the substrate is clean.
3.
Check that the substrate-advance sensor is clean: see
Clean the substrate-advance sensor
on page
33
.
4.
Check that you are printing in single-job mode, as this option is not enabled for queue mode.
5.
Check that the substrate is capable of being detected. If it is translucent, or not white enough, the
sensor cannot detect it.
6.
LX850 only:
Ensure that the ink collector kit is not installed.
ENWW
Marks on the substrate
77
Double-sided printing