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RECORDING SECTION
2.2
Reproduction Ratio Processing Section
The image is then reduced by one of the Reproduction ratio shown below.
After scaling, the image data is sent to the printing section.
(1) Regular reproduction
(2) Fixed reproduction
The image data is reduced by a reproduction ratio (fixed) that is set on the
user registration switches.
(3) Automatic reproduction
The image data is automatically reduced to fit on a single sheet of record-
ing paper even if the image data is longer than the recording paper.
(4) mm/inch conversion
Normally, the resolution of image data that is received in the G3 mode is
expressed using the millimeter unit system. The resolution of the printer,
however, is expressed using the inch unit system. For this reason, image
data of a resolution expressed in the millimeter unit system is converted to
resolution expressed in the inch unit system held by the printer. This is
called "mm/inch conversion." mm/inch conversion is performed regardless
of whether or not scaling types (1) to (3) described above are performed.
Next, let's describe an instance where image data of fine resolution is
printed on a 360 dpi (dots/inch) printer.
• Horizontal scanning direction
First, the mm system units are converted to inch system units. As one inch
is 25.4 mm:
Next, the printer calculates how many dots are used to print a single dot of
the image data.
4–8
Size of
Size of
Image
Recording
Data
Paper
A3
A4
A3
B4
B4
A4
8 (dots/mm)
25.4 (mm/inch) = 203.2 (dots/inch)
360 (dots/inch)
203.2 (dots/inch) = about 1.772
Reproduction
The image data is reduced by a ratio of 70%.
The image data is reduced by a ratio of 86%.
The image data is reduced by a ratio of 81%.
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