B.3. Special Paper
Overhead Projection (OHP) Film
OHP film must be able to withstand the heat of fusing during the printing process. It should satisfy the con- ditions in Table B.3.
Table B.3 OHP Film Specifications
Item | Specification |
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Tolerance of heat | Must tolerate at least 190°C (374°F) |
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Thickness | 0.100 to 0.110 mm (3.9 to 4.3 mils) |
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Dimensional accuracy | ±0.7 mm (±0.0276 in) |
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Squareness of corners | 90° ±0.2° |
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To avoid trouble, OHP film must be delivered
If OHP film jams frequently, pull the top of the sheet very gently as it leaves the printer.
Adhesive-Backed Labels
The basic rule for printing on adhesive labels is that the adhesive must never come into contact with any part of the printer. Adhesive paper sticking to the drum or rollers will damage the printer.
Label paper must be manually fed.
Label paper has a structure comprising three lay- ers, as shown in Figure B.1. The top sheet is printed on. The adhesive layer consists of pres-
Adhesive label paper must be entirely covered by its top sheet, with no spaces between the individ- ual labels. Labels with spaces in between are apt to peel off, causing serious jam problems.
Some label paper is manufactured with an extra margin of top sheet around the edge. Do not remove the extra top sheet from the carrier sheet until after printing is finished.
Top sheet (white bond paper)
Adhesive
Carrier sheet
Figure B.1 Adhesive-back label
Acceptable | Unacceptable |
Top sheet 
Carrier sheet
Table B.4 lists the specifications for adhesive | Figure B.2 Label arrangement | |||
label paper. |
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Table B.4 Adhesive Label Specifications |
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Item |
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Weight of top sheet | 44 to 74 g/m² (12 to 20 lbs/ream) |
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Composite weight | 104 to 151 g/m² (28 to 40 lbs/ream) |
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Thickness of top sheet | 0.086 to 0.107 mm (3.9 to 4.2 mils) |
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Composite thickness | 0.115 to 0.145 mm (4.5 to 5.7 mils) |
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Moisture content | 4% to 6% (composite) |
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