Toshiba e-studio555 User Manual

9
© 2009 - 2011 TOSHIBA TEC CORPORATION All rights reserved e-STUDIO555/655/755/855
PROCESS RELATED SECTION
9 - 5
9.4.2 Description of operation
The function and operation of each signal are as follows.
On-off signal (HVTM-0A, HVDAC-0A, HVDDC-0A, HVTT-0A, HVTBB-0A):
These signals are the on-off signals of each bias output to the main charger (main charger wire and
grid), developer bias (AC/DC), transfer belt power supply roller, and transfer belt cleaning brush. When
these signals move to a low level, the generating circuit of each bias on the high-voltage transformer
becomes on status, thus the current or voltage is output.
Reference voltage (Vctr) (HVMVR-1A, HVDVR-1A, HVTVR-1A):
These analog voltages are the reference for each output of the main charger grid, developer bias (DC)
and transfer belt power supply roller. Each output of the high-voltage transformer can be changed
linearly by changing these reference voltages.
The output procedure of the reference voltages is shown below.
• The adjusted values of the main charger bias, developer bias and transfer bias in the NVRAM are
output to the ASIC.
↓
• The data of the reference voltage is output from the ASIC to the D/A converter.
↓
• Digital-to-analog conversion at the D/A converter
↓
• The reference voltage (Vctr) of each bias is output to the high-voltage transformer.
↓
• The high-voltage transformer generates the output current or output voltage proportionate to the
reference voltage.
* The reference voltage (Vctr) can be adjusted in the Adjustment Mode (05).
* The output of the transfer belt cleaning brush was adjusted at a constant value when the high-
voltage transformer was shipped from the factory, and this adjusted value has been fixed since then.
Developer AC bias generating clock (HVTAC-0A):
This clock signal is a reference for the AC component of the developer bias.
Leak detection signal (HVTER-0):
This signal detects the abnormality (leakage) of the high-voltage transformer output. When the
abnormality is detected, the signal moves to a low level.

Toshiba e-studio555 Specifications

Power

power supply	120 Volts; 20 Amps
power consumption	Maximum 2.0kW
warm-up time	Appx. 130 Seconds

Printing and Copying

copy/print resolution	2400 x 600 dpi
copy/print speed	55 / 65 / 75 / 85 cpm
print speed	55 / 65 / 75 / 85 ppm

Scanning

scan speed	80 spm LT-Size @300 dpi
scan resolution	150 dpi, 200 dpi, 300 dpi, 400 dpi, 600 dpi
file format	TIFF, PDF, JPEG, XPS, MS Word, MS Excel, Searchable PDF w/ Adv. Scanning option

Memory and Storage

memory	1GB RAM, 60 GB HDD
fax memory transmission	500MB (HDD)
reception	500MB (HDD)

Connectivity

connectivity	Ethernet 10/100BaseT, USB 2.0, 802.11b/g Wireless LAN, Bluetooth (HCRP)
protocol support	IPX/SPX, TCP/IP (IPV4/V6), EtherTalk, AppleTalk PAP, LPR/LPD, IPP w/Authentication, Port 9100
operating systems	Windows 2000/XP/2003/Vista/2008, Mac X OS 10.2.4/10.3/10.4/10.5, UNIX, Linux, CUPS

Weight and Dimensions

dimensions	28” x 31” x 46” (W x D x H)
weight	462 lbs
standard paper supply	2 x 500-Sheet Drawer; 2 x 1, 250-Sheet Tandem Drawer; 100-Sheet Stack Feed Bypass