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NOTE:
For normal paper feed, the drive frequency of the paper
feeding motor is set to 250 pps. In the vector print
mode,
the drive frequencies of the paper feeding motor and car-
riage motor are 350 pps.
Fig. 1-16. Bit Image Printing Operation
Carriage-scanning direction
Dot head
-LJ
¢
X(-)------x(+)
500pps
I
I
Acceleration
'{
range
:
' \
t----
Printing range ----'
l'
Deceleration range
Print
reference
position
P(N-10)
P(N)
I
I
P(M+10)
PIM)\
i
I
I
Po
That is, when bit image printing where the head position
moves from P(N) to P(M) is to be performed, the carriage
motor is accelerated for the 1 0-step acceleration range
from PiN-10) to
P(N),
the carriage motor is driven 500 pps
from
P(N)
to
P(M),
thereby executing bit image
printing.
The
10 steps of the head position from
P(M)
to
P(M+10) is ap-
plied to the paper feed as a deceleration range (see
Fig.
1-1 6.):
The carriage motor is stopped after
P(M+
1
O),
then the
paper
feeding motor is driven
for
250
pps.
For single density,
the paper is fed two
steps;
for double density, it is fed one
step.
-15-
Consequently, this offset is considered in cases where
#
4
wire is printed onto the same position as the
#
1 wire, re-
quiring that the carriage be fed 72 steps in the positive X-
axis direction and that the paper be fed six steps in the ne-
gative Y-axis direction.
3) Vector Printing
In the case of vector
printing,
plotting is started after pull-
ing the paper out for a continuous plotting operation
with-
in the y-axis plotting range. After moving the paper and
carriage (dot head) to arbitrary position by the forward
or
reverse rotation of the paper feeding and carriage motors,
the head coil of the desired color is
charged.
The configu-
ration of characters or the plotter mode is then executed
using the method described
below.
4) Bit Image Printing
In the case of bit image printing, the carriage motor is
accelerated or decelerated in order to increase printing
speed.
Fig. 1-15. Print Driving Signal Range of Each Wire
X(-)
X(+l
Heed
CJ
#
4 wire Print Driving signal range
11
4
11
3
11
2
11
l
reference
position
#
1 wire Print Driving signal range
P(
O)
P(24)
P(48)
P(72)
P(497) P(503)
P{527) P(551
I
P(-64)
P(-60)
Print
Fig. 1 -1 5 shows the range of the Print Driving signal for
each wire, where the print reference position of the head is
represented as P(O) and the head position as
P(n).
Fig. 1-14. Arrangement of Dot Wires
(
+ )--------
(-)
x
Unit:
mm
0.4
_._ __
___,~---1-
0. 4
0.4+-
_
__.._--==-
#
1 Black
#2 Cyan
#3 Magenta
#4 Yellow
(+)
YI
(-)
-
CE-140P
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