System Description; Transmit Mechanism - Toshiba e-studio191f Service Manual

6 System Description

6.1.

Transmit Mechanism

The transmit mechanism consists of components which feed, scan and eject documents, as well as send
signals. These components and their functions are as follows:
CIS (Contact Image Sensor)
6.1.1. ADF Mechanism
The ADF (Automatic Document Feeder) automatically feeds paper into the unit, and consists of ADF Roller
and Separation Roller. The document is placed face up on the Document Tray before being fed into the unit.
The ADF Roller feeds individual pages into the scanning area.
The Separation Roller and ADF Pad separates documents placed on the ADF, preventing multiple feeding.
6.1.2. Transmit Guide Unit
The Transmit Guide Unit is an auxiliary part used for feeding and ejecting documents. It consists of the
Transmit Guide, Control Panel Chassis, Feed Roller, Eject Roller, and Eject Pinch Roller and Feed Pinch
Roller. This unit also provides the white scanning area and serves as a base for electronic white reference.
6.1.3. Transmit Mechanism Drive System
This system feeds documents through the transmitting mechanism, and consists of rollers, gears, belts and
a stepper motor.
The motor, a Stepper Motor, controlled by the CPU, drives the ADF Roller, Feed Roller and Eject Roller,
with the speed based on the density of the picture information.
The Feed Roller feeds the document to the scanning point and ejects the document out of the machine.
6.1.4. Verification Stamp Unit
The Verification Stamp Unit stamps the "X" mark on the face of the document after the document is
successfully transmitted or stored.
6.1.5. Scanner Block
The scanner block consists of the CIS (Contact Image Sensor) Assembly.
The in-line Lens Array focus the image information and pass it to the CIS.
The CIS array converts the image information into the electronic signals.
Stamp Unit
187
Motor
DP-1910F