Toshiba MR-3022, MR-3018 Original Size Detection, Original tray width sensor, Original width size

3.2Original Size Detection

The original tray width sensor, original length detection sensor, and original width detection sensors-1 and -2 work in combination to detect the size of originals.

Original tray width sensor

Original width detection sensor-1

Original width detection sensor-2

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Original length detection sensor

Fig. 3-5

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. Then the original width sensors -1 and -2 and the original length detection sensor detect the size of the original being transported. Based on the detection result of these sensors, the size of the original is finally determined.

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
			(LT series)	(A4 series)
L	H	H	-	B5-R
H	L	H	ST-R	A5-R
L	L	H	LD / LT	A3 / A4
L	H	L	8.5 x 8.5 / LT-R / LG / 13"LG	A4-R / FOLIO
L	L	L	COMPUTER	B4 / B5
	H (= high level): Open		L (= low level): Short

© 2005 - 2011 TOSHIBA TEC CORPORATION All rights reserved	MR-3018/3020/3021/3022
	DESCRIPTION OF OPERATIONS

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