Toshiba Estudio 162 Owners Manual

e-STUDIO162/162D/151/151D UNPACKING AND INSTALLATION  5 - 12
11. Interface
A. USB
Connector
4-pin ACON UBR23-4K2200
Type-B connector
Cable
Shielded twisted pair cable
(2 m (6 feet) Max.: high-speed transmission equivalent)
Pin configuration
The pin numbers and signal names are listed in the following table.
B. Parallel interface
This printer uses a bi-directional parallel interface. Use the supplied
interface cable.
Connector
36-pin ACON RBE42-36K1153 female connector or equivalent con-
nector
Cable...

e-STUDIO162/162D/151/151D COPY PROCESS  6 - 1
[6] COPY PROCESS
1. Functional diagram
(Basic operation cycle)
(20 microns thick)
Aluminum drum  Pigment layer (0.2
to 0.3 microns thick) An OPC drum is used for the photoconductor.
(Structure of the OPC drum layers)
OPC layer
Main charger
Laser beam
MG rollerCleaning blade
Drum
Transfer unit
Resist roller
Exposure Main high voltage unit
Saw toothCharge
Drum
Cleaning
Cleaning blade
Waste toner box
Paper release Fus ing
Separation
Heat roller
Heater...

e-STUDIO162/162D/151/151D COPY PROCESS  6 - 2
2. Outline of print process
This printer is a non-impact printer that uses a semiconductor laser
and electrostatic print process. This printer uses an OPC (Organic
Photo Conductor) for its photoconductive material.
First, voltage from the main corona unit charges the drum surface and
a latent image is formed on the drum surface using a laser beam. This
latent image forms a visible image on the drum surface when toner is
applied. The toner image is then...

e-STUDIO162/162D/151/151D COPY PROCESS  6 - 3 Step-3: Developing (DC bias)
A bias potential is applied to the MG roller in the two component
magnetic brush developing method, and the toner is charged negative
through friction with the carrier.
Non-image area of the drum surface charged with negative potential
repel the toner, whereas the laser exposed portions where no negative
charges exist, attract the toner. As a result, a visible image appears on
the drum surface.
Toner is attracted over the shadowed...

e-STUDIO162/162D/151/151D COPY PROCESS  6 - 4 Step-7: Optical discharge (Semiconductor laser)
Before the drum rotation is stopped, the semiconductor laser is
radiated onto the drum to reduce the electrical resistance in the OPC
layer and eliminate residual charge, providing a uniform state to the
drum surface for the next page to be printed.
When the electrical resistance is reduced, positive charges on the
aluminum layer are moved and neutralized with negative charges on
the OPC layer.
Charge by the...

e-STUDIO162/162D/151/151D OPERATIONAL DESCRIPTIONS  7 - 1
[7] OPERATIONAL DESCRIPTIONS
1. Outline of operation
The outline of operation is described referring to the basic configuration.
(Basic configuration)
(Outline of copy operation)
Setting conditions
1) Set copy conditions such as the copy quantity and the copy density
with the operation section, and press the COPY button. The infor-
mation on copy conditions is sent to the MCU.
Image scanning
2) When the COPY button is pressed, the scanner section...

e-STUDIO162/162D/151/151D OPERATIONAL DESCRIPTIONS  7 - 2
2. Scanner section
A. Scanner unit
The scanner unit in the digital copier scans images.
It is composed of the optical unit and the drive unit. The optical unit
performs scanning in the main scan direction with the light receiving
elements (color CCD). The drive unit performs scanning in the sub
scanning direction by moving the optical unit.
B. Optical system
Two white lamps are used as the light source.
Light radiated from the light source is...

e-STUDIO162/162D/151/151D OPERATIONAL DESCRIPTIONS  7 - 3
3. Laser unit
The image data sent from the MCU (image process circuit) is sent to
the LSU (laser unit), where it is converted into laser beams.
A. Basic structure
The LSU unit is the writing section of the digital optical system.
The semiconductor laser is used as the light source, and images are
formed on the OPC drum by the polygon mirror and f
θ lens, etc.
The laser beams are passed through the collimator lens, the cylindrical
lens, the polygon...

e-STUDIO162/162D/151/151D OPERATIONAL DESCRIPTIONS  7 - 4
A. General description
General block diagram (cross section)
Top view
(1) Heat roller
A Teflon roller is used for the heat roller and a silicone rubber roller is
used for the lower heat roller for better toner fusing performance and
paper separation.
(2) Separator pawl
Three separator pawls are used on the upper heat roller. The separa-
tor pawls are Teflon coated to reduce friction with the roller and prevent
a smear on the paper caused by the...

e-STUDIO162/162D/151/151D OPERATIONAL DESCRIPTIONS  7 - 5
(1) Cassette paper feed operation
1) The figure below shows the positions of the pick-up roller, the
paper feed clutch sleeve, and the paper feed latch in the initial
state without pressing the COPY button after lighting the ready
lamp.
The paper feed latch is in contact with the projection of the clutch
sleeve.
2) When the COPY button is pressed, the main drive motor starts
rotating to drive each drive gear.
The pick-up drive gear also is driven...