Carriage Motor Specification; Printerhead Specification; Paper Feeding Motor Specification; Pw Detector Specification - Epson Stylus PHOTO RX600 Service Manual

EPSON Stylus PHOTO RX600/610, RX620/630

2.2.1.1 Carriage Motor Specification

Table 2-1. CR Motor Specification
Item
Type DC Motor with brush
+ 42V (DC) ±5% (printable voltage to the driver)
Voltage
22.65 Ω ± 10%
Resistance
17.3 mH ± 25%
Inductance
Drive PWM system, rated current chopping system
Drive IC A6615

2.2.1.2 Printerhead Specification

Black Ink : 90 nozzles
Color Ink : 90 nozzles x 5 colors (C, M, Y, LC, LM)

2.2.1.3 Paper Feeding Motor Specification

Table 2-2. PF Motor Specification
Item
Type 4-phase 200-pole HB stepping motor
+ 42V (DC) ±5% (printable voltage to the driver)
Voltage
30 Ω ± 10%
Resistance
3.5 mH ± 20%
Inductance
Drive Bipolar driving
Drive IC A6615
Operating Principles
Specifications
Specifications

2.2.1.4 PW Detector Specification

Stylus PHOTO RX600/610, RX620/630 has newly employed a PW (Paper Width)
sensor that is described in detail below.
Purpose of Detection
•
To prevent printing with no characters on cut sheet.
Detector Specification
Item
Detecting method
Open-collector
electric characteristic
Switching Mode
Detected State
Paper existent
Paper non-existent
Note: Paper head signals shall be converted by means of 8-bit A/D conversion.
PW Detector Control
There are two controlling methods using PW detector as follows:
Control of preventing print with no characters
Before start of print (immediately after paper head feed is complete) or during
print, this control detects the existence of paper with PW detector, driving CR
and PF motors and prevents print with no characters on paper sent to paper
guide, which applies to only right and left edges of paper.
Control of restriction to run-off
This control detect paper edges with PW detector at the time of printing with
no margin, and restrict the printing run-off quantity. It detects 4 edges when
no margins are set for 4 sides of paper. For each mode, run-off area thin-out
control is set that further compensates for run-off mask area at the time of
printing with no characters.
Mechanism
Specification
Photoelectric conversion method (reflection type)
(SHARP GP2S40V)
Collector withstand-voltage: not more than 30V
Sinc current : not more than 0.2mA
Driving voltage : 3.3 ± 5%
Switching Mode Detector Output
Open Voltage low
Close Voltage high
Revision C
15