Epson 2070 Service Manual - Page 51

Platen Gap Adjustment, Table 2-2. Platen Gap and Print Speed

Get Epson 2070 - LQ B/W Dot-matrix Printer PDF manuals and user guides
UPC - 010343812277
View all Epson 2070 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 51 highlights

LQ-2070 Service Manual Operating Principles 2.1.3 Platen Gap Adjustment You can adjust the platen gap (the gap between the platen and printhead) to allow the printer to use paper of different weights or thicknesses. When you move the platen gap adjust lever forward or backward, the carriage guide shaft rotates. This rotation moves the carriage either toward or away from the platen and changes the platen gap. This adjustment function has nine ranges for the adjustment, and the adjustment position is detected by platen gap (PG) switches. Lever, PG, Adjust PG SW Platen Gap Adjustment Slot Close Open Figure 2-3 Platen Gap Adjustment Lever Moving the platen gap adjust lever beyond position 2 changes the print speed mode to Copy mode, and the speed slows down to about 2⁄3 normal to protect the printhead. The following table show you the relationship between the platen gap and the print speed. Table 2-2. Platen Gap and Print Speed Paper Type Paper Thickness (mm) Single Sheet 0.065 (14 lb) 0.1 (22 lb) Continuous Paper (Single Sheet) 0.14 (24 lb) 0.065 (14 lb) 0.09 (20 lb) Continuous ~0.18 (1+1 P) Paper (Multipart) ~0.25 (1+2 P) Labels Envelopes ~0.32 (1+3 P) 0.07 - 0.19 0.16 - 0.32 0.16 - 0.40 0.22 - 0.44 0.23 - 0.46 0.26 - 0.52 Card Stock 0.22 Adjust Lever Position 0 0 1 0 0 1 2 3 2 2 3 4 4 6 2 PG SW Closed Closed Closed Closed Closed Closed Open Open Open Open Open Open Open Open Open Print Speed Normal Normal Normal Normal Normal Normal Copy Copy Copy Copy Copy Copy Copy Copy Copy Rev.A 2-3

  • 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
2.1.3 Platen Gap Adjustment
You can adjust the platen gap (the gap between the platen and printhead) to allow the printer to use paper of
different weights or thicknesses. When you move the platen gap adjust lever forward or backward, the
carriage guide shaft rotates. This rotation moves the carriage either toward or away from the platen and
changes the platen gap. This adjustment function has nine ranges for the adjustment, and the adjustment
position is detected by platen gap (PG) switches.
Moving the platen gap adjust lever beyond position 2 changes the print speed mode to Copy
mode, and the
speed slows down to about
2
∕
3
normal to protect the printhead. The following table show you the relationship
between the platen gap and the print speed.
Table 2-2. Platen Gap and Print Speed
Paper Type
Paper
Thickness
(mm)
Adjust Lever
Position
PG SW
Print Speed
Single Sheet
0.065 (14 lb)
0
Closed
Normal
0.1 (22 lb)
0
Closed
Normal
0.14 (24 lb)
1
Closed
Normal
Continuous
Paper (Single
Sheet)
0.065 (14 lb)
0
Closed
Normal
0.09 (20 lb)
0
Closed
Normal
Continuous
Paper
(Multipart)
~0.18 (1+1 P)
1
Closed
Normal
~0.25 (1+2 P)
2
Open
Copy
~0.32 (1+3 P)
3
Open
Copy
Labels
0.07 — 0.19
2
Open
Copy
Envelopes
0.16 — 0.32
2
Open
Copy
0.16 — 0.40
3
Open
Copy
0.22 — 0.44
4
Open
Copy
0.23 — 0.46
4
Open
Copy
0.26 — 0.52
6
Open
Copy
Card Stock
0.22
2
Open
Copy
Platen Gap Adjustment Slot
Lever, PG, Adjust
PG SW
Open
Close
Figure 2-3 Platen Gap Adjustment Lever
LQ-2070 Service Manual
Operating Principles
Rev.A
2-3