Citizen CLP-621 Technical Manual

2-2. Operation of Control Parts
2-17 CLP-621 & CLP-631
(4) Thermal print head
The thermal print head has the following thermal elements. It also has the print head driver
circuit.
• 864 dots for CLP-621
• 1275 dots for CLP-631
(5) Sensors
The following 7 sensors are used:
Sensor name Description
Head Up Sensor Photointerrupter.
Transparent Sensor Photo sensor using the phototransistor.
Reflective Sensor Photo sensor consisting of 2 LEDs and 1
phototransistor.
Tension Sensor (Front/Rear) Photo sensor using the phototransistor. Located on the
front and rear of the Ribbon Unit.
Head Temperature Sensor Thermistor incorporated in the print head.
PF Motor Temperature Sensor Thermistor attached to the PF Motor.
Ribbon Motor Temperature Sensor Thermistor attached to the Ribbon Motor F.
(6) Motor
Three motors are used. The PF Motor is a stepping motor to feed media. The Ribbon Motor F
and Ribbon Motor R are stepping motors to take up and supply ribbon, respectively.
(7) Parallel I/F (IEEE1284)
This is the parallel I/F to transmit and receive parallel data between the printer and the host. It
supports Centronics Compatible mode, NIBBLE mode and ECP mode.
Parallel I/F, serial I/F, or USB I/F is automatically selected when data is received.
(8) Serial I/F (RS-232C)
This is a circuit to transmit and receive serial data between the printer and the host.
Parallel I/F, serial I/F, or USB I/F is automatically selected when data is received.
(9) USB (Universal Serial Bus) I/F
This is a circuit to transmit and receive serial data between the printer and the host using the
USB.
Parallel I/F, serial I/F, or USB I/F is automatically selected when data is received.
(10) Ethernet I/F (O
ption)
This is a circuit which supports Ethernet protocol. LAN connection is possible.
(11) Wireless LAN I/F (Option)
This is a circuit which supports Ethernet protocol. Wireless LAN connection is possible.

Citizen CLP-621 Specifications

General

USB port	No
RS-232 interface	Yes
Optional connectivity	Ethernet
USB 1.1 ports quantity	1
USB 2.0 ports quantity	0
Connectivity technology	Wired
Flash memory	2 MB
Certification	UL, C-UL, FCC class A, CCC, CE Marking
Internal memory	8 MB
Number of fonts	2
Built-in barcodes	PDF417, UPC-A, UPC-E
Built-in processor	32 Bit RISC
Mean cycles between failures (MCBF)	1000
Power consumption	2400 mA
Power requirements	100 - 240V, 50 / 60Hz
Compatible operating systems	Windows 2000, XP, Vista
Core diameter	25.4 mm
Ribbon length	360 m
Media thickness	0.0635 - 0.254 mm
Maximum label length	812 m
Maximum roll diameter	127 mm
Supported paper width	19.5 - 118 mm

Weight and Dimensions

Depth	114 mm
Width	91 mm
Height	104 mm