EBS Ink-Jet Systems EBS-6200, User Manual

Page: 85 / 124

EBS-6200
Printer User's Manual
Chapter 4 - Operating the Printer
#1.0
83
20091020
Below you can see a sam
parameter; the travel speed is constant (NOTE: in order to make the overprint legible, it is not shown
to scale): ple print " ABCD " which differs for various settings of the Resol. dot/cm
Resol. dot/cm:24
Resol. dot/cm:12
Resol. dot/cm:6
h measurements of the timing frequency (print rate) can be taken with the ROWS SPEED
and from the PRINTING submenu. The result of the measurement depends on the settings o
peed
,
Generator
,
Resol. dot/cm
and
Cnv spd m
Roug
comm f
the
S /min
print parameters from
PRINTING
.
4.6.2
T
co l
gene
to the rotational speed of
th a inted. Therefore
th p
betwe
pulse
speed
. Shaft-encoder
he shaft-encoder is an electromechanical indicator of rotary speed. The shaft-encoder axle is
up ed mechanically with an object that moves on a factory conveyor, for example. Pulses are
rated at the shaft-encoder outp oportional ut. The pulse frequency is pr
e xle. The pulses determine the moments at which rows of overprints are to be pr
e ulse frequency depends on the travel speed, the transmission ratio of a mechanical gear
en a moving product, the shaft-encoder's axle and the type of encoder, i.e., the number of
s per rotation. That is why an external encoder is applied for timing when variable or unstable
conveyors are used.
Signal cable
SHAFT-ENCODER axle
Pulses for slow rotation of the SHAFT-ENCODER axle This manual does not con
Pulses for fast rotation of the SHAFT-ENCODER axle
description of the types of
mechanical gear to be used to
coup
tain any
le mechanically encoders with
conveyors. A variety of solutions is
available and specific user
requirements can fully be met.
Fig. 4.6.2.1. Shaft-encoder
PRINTING submenu):
arameter can be determined by measuring the encoder
constant with the CONVEYER MEASUREMENTS service command - see also section
4.4.4.11 Defining Some Print Parameters by Measuring Conveyor Travel Speed
.
´
The Resol. dot/cm parameter (see section
4.4.3.5 Print Parameters
) defines image resolution.
The resolution is expressed as a number of dots per centimetre. The visual effect of a change to
the parameter is a change in the width of characters (graphical images) and the length of the
entire text file.
The timing frequency (print rate) is influenced by two print parameters (available with the
PRINTING PARAMETERS command from the
´
The Enc const p/m parameter (see section
4.4.3.5 Print Parameters
) defines the number of
pulses generated by the shaft-encoder while the object covers a distance of 1m . If the shaft-
encoder is used for timing purposes and the Enc const p/m parameter is set to a constant value,
no increase or decrease in the conveyor travel speed has any impact on the character width.
The setting for the Enc const p/m p