Copy Process, General Description of Copying Process

3. COPY PROCESS

3.1 General Description of Copying Process

(2)Original exposure

Xenon lamp

16W

				(11)
(3)				(11)	Discharging
(3)	Data reading (scanning)				Discharge LED (red)

	CCD				Wavelength 660nm x14pcs
	600 dpi,	7400 pixel	(1)
	600 dpi,	7400 pixel		Charging
				Charging
				–790V
				(grid voltage)
	Image processing			(grid voltage)

(4)	Data writing
	Semiconductive laser
	Pw=4.3 nJ/mm2

Paper exit

(9)Fusing

Inductionheating (IH) method

(10)700~1240W

Cleaning

Blade method

(8)

Separation

ACH 5.5kV

C 4.0kV

L 2.5kV

DC -100V

1kHz

(7) Transfer

H 286 uA

C 286 uA

L 137 uA

(5) Development

Magnetic roller

Bias –550VDC Toner

+150VDC Carrier

Fig. 3-101

	Transfer bias
(6)	DC+580V

Bypass feeding

(100 sheets)

Drawer feeding

(upper/lower) (550 sheets)

PFP (upper/lower)

(550 sheets) or

LCF

(1250 sheets x 2)

(1)Charging: Applies negative charge on the surface of the photoconductive drum.



(2)Original exposure: Converts images on the original into optical signals.



(3)Data reading: The optical signals are con- verted into electrical signals.



(4)Data writing: The electrical signals are converted into light signal (laser emission) which exposes the surface of the photocon- ductive drum.



(5)Development: Negatively-charged toner adheres to the photoconductive drum and forms visible image.



(6)Transfer bias: Improves transfer efficiency.



(7)Transfer: Transfers the visible toner image on the photoconductive drum onto paper.



(8)Separation: Separates paper with the toner image from the photoconductive drum.



(9)Fusing: Fuses the toner image onto the pa- per by applying heat and pressure.



(10)Cleaning : Scrapes off the residual toner from the drum.



(11)Discharging : Eliminates the residual nega- tive charge from the surface of the photoconductive drum.

© 2003 - 2008 TOSHIBA TEC CORPORATION All rights reserved 3 -	e-STUDIO350/352/353/450/452/453
	COPY PROCESS

350, 353, 453, 452 specifications

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