Toshiba MR-2017, MR-2020 Original Size Detection, Original width size Orange Yellow Gray

3.2Original Size Detection

Original tray width sensor

Fig. 3-3

3.2.1Outline

When an original is placed on the original tray, the width of the original is detected by the positions of the original width guides.

3.2.2Original tray width sensor

The original tray width sensor detects the width of an original placed on the original tray.

It is detected by the brush attached to the rack moving on the original tray width sensor, which is a board with the different length of the patterns written.

This brush is moved as the original width guide is moved. Signals (TWID0S, TWID1S, TWID2S) are opened and shorted to SG by this movement.

The combination of these short (= low level) and open (= high level) can determine the width of the orig- inal.

Sizes detectable in combination of these open and short of the signals are as follows:

TWID2S	TWID1S	TWID0S		Original width size	Original width size
(Orange)	(Yellow)	(Gray)		(LT series)	(A4 series)
H	H	H		LD / LT	A3 / A4
H	H	L		-	B5-R
H	L	H		ST-R	A5-R
L	H	H		LD / LT	A3 / A4
L	H	L		-	Postcard
L	L	H	8.5x8.5 / LT-R / KLG / 13”LG		A4-R / FOLIO
L	L	L		COMPUTER	B4 / B5
	H (= high level): Open			L (= low level): Short

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DESCRIPTION OF OPERATIONS

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06/09