Kyocera KM-2540 - Manual (Page 20)

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Originals and Paper Sizes
This section explains the notation used in this guide when referring to
sizes of originals or paper sizes.
As in A4 and B5, which may be used either in the horizontal or vertical
direction, in order to indicate the orientation of the original/paper,
horizontal orientation is indicated by an additional R character.
Set direction Indicated size
a
a. The size of original/paper that can be used depends on the
function and source tray. For further details, refer to the page
detailing that function or source tray.
Vertical direction
For original/paper, dimension A is longer than B.
A4, B5, A5, B6,
A6, 16K
Horizontal direction
For original/paper, dimension A is shorter than B.
A4R, B5R, A5R,
B6R, A6R, 16KR
B B
A A
Original Size
B B
A
A
Original Size