Gestetner 3180DNP, Operating Instructions Manual

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Operation Notes
113
6
• While making a master, do not leave the exposure glass cover or optional
Auto Document Feeder open.
• In Letter/Photo mode, moire patterns might occur when screened originals
are printed. In this case, make prints in Letter or Photo mode.
• When you use originals with light lettering, edges of the letters might be
printed clearly and the inside of the letters might be light. In this case, in-
crease the image density.
• When marks on the printing paper occur, clean the paper feed roller. See
p.116 “Maintaining the Machine”.
• If you make a print before the ink on the first print dries, the ink may adhere
to the paper feed roller and soil the print. Before printing on the reverse side
of a printed sheet or overprinting on a printed sheet, be sure that the ink on
the first print is adequately dry.
Print Paper
• When the paper is curled, stack the paper with the curl face down, otherwise
the paper might wrap around the drum or stains might appear.
• Postcards and the like do not absorb ink well. Offset images might appear on
the rear side of subsequent prints. Solid image originals will cause offset im-
age prints.
Originals
• If there is no margin or if there is a solid image area near the leading edge of
the original, make at least a 5 mm, 0.2", margin at the leading edge; otherwise,
the paper might wrap around the drum or the paper exit pawl might become
dirty and cause black lines on prints.
• If you use originals that have bold letters or solid images at the leading edges,
you might get prints with dirty edges. In this case, insert the widest margin
first, or raise the printing speed.
• Under the following conditions, the machine might not detect the original on
the exposure glass. If you press the
{
Master Making
}
mode select key again, the
machine will start making a master anyway:
• When you set a dark original on the exposure glass.
• When the original is not centered according to the size marks on the right
scale.
• If you do not open the exposure glass cover at an angle of more than 30
°
with the exposure glass when you replace originals.
• If the machine is installed under a strong light.
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