Ricoh SP 200 Specifications download pdf (Page 22)

1.3 ORIGINAL SIZE DETECTION IN PLATEN MODE

In the optics cavity for original size detection, there are four reflective sensors

in the 115V machines, and six reflective sensors in the 230V machines. The

Original Width Sensors [A] detect the original width, and the Original Length

Sensors [B] detect the original length. These are the APS (Auto Paper

Select) sensors. Each APS sensor is a reflective photosensor.

While the main switch is on, these sensors are active and the original size

data is always sent to the CPU. However, the CPU checks the data only

when the platen cover is opened.

The original size data is taken by the main CPU when the platen cover

sensor [C] is activated. This is when the platen is positioned about 15 cm

above the exposure glass. At this time, only the sensor(s) located underneath

the original receive the reflected light and switch on. The other sensor(s) are

off. The main CPU can recognize the original size from the on/off signals

from the APS sensors.

If the copy is made with the platen fully open, the main CPU decides the

original size from the sensor outputs when the Start key is pressed.

[C]

A193D003.wmf

[B]

[A]

A193D526.wmf

1 August 1996 SCANNING

2-3

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 237 238

No comments

Ricoh SP 200 Specifications Page 22