Jan 9 10 2007 Fuji Xerox Marking Module

Jan. 9 -10, 2007 Fuji Xerox Marking Module Design Team Fuji Xerox Confidential 1 / 12

1. Technology n Selected Technology VCSEL : Vertical Cavity Surface Emitted Laser IRECT : Image Registration Control Technology Wire Scorotoron+CLN ** HQ Digital Screen* VCSEL 2400 dpi ROS w/ IRECT* 2 ESB Cleaner** PR Traction Dｒive* STXH Photo Receptor* 6060 UI*** FC 2 Toner*** No Copier Option Dual Air Assist ＆Full ARRF ** OCT*** 80 ppm BNF w/ Oil** Belt Transfer* Front to Back Side Regi Control * * New Technology ** Modified MK 2 ***Common as MK 2 Fuji Xerox Confidential 2

2. Charge and Cleaner Drum ERU ● 2 -ESB Cleaner CC CRU with Wire/Grid Cleaner ● Parameters for 80 ppm ● Single Wire ● Wire/Grid Cleaner Fuji Xerox Confidential 3

2 -1. ESB CLEANER KEY PARAMETERS n XC ESB CLEANER 5100 n SFIDA MK 2 / Venezia ESB CLEANER 5090 n Key Parameter Fuji Xerox Confidential 4

3. Development -Speed increase : 1)Deve Motor →Mag-roll (keeping speed ratio 1. 75), HSG Auger 2)Cartridge Motor 3)Reserve Tank Motor Same as 「Fuhjin」 Target of Covering A/C : 100%(3 C) , 68%(K) = MK 2 Fuji Xerox Confidential 5

4. Bias Transfer Belt (May. 28, ‘ 03) n Merit t POB JAM improvement t Extend paper latitude ( 85 gsm Light Coated Stock) t Long Life (Target 400 kpv) Venezia 2 nd BTB 2 -ESB Cleaning Contact Roll Static Eliminate Plate BUR n Issue t Narrow Roll to Roll alignment (Need Jig Adjustment) m Strip Roll Alignment – Teflon coated Strip Roll – Back side teflon coated Belt 2 nd Roll Idle Roll Paper Pass 2 ESB Detach Saw t Belt Cleaning Life (ESB) n Development Plan t System test with final configuration: by the End of June m 40 mm diameter Belt m ESB Cleaning m Belt tracking Mech n Design Strategy t Same location and size of MK 2 BTR Unit Fuji Xerox Confidential 6

Venezia 2 nd BTB Configuration/Key Parameter (Nov. 13, ‘ 03) Venezia 2 nd BTB Configuration Contact Roll Static Eliminate Plate BUR Brush-B Drive Roll 2 nd Transfer HV Voltage = Same as Mk 2 Control Output range is from -0. 5 k. V to -8. 0 k. V. Voltage depends on Paper weight, Coat/Uncoat, Environment and System Resistivity. For example, -2. 5～-3 k. V@B zone（Digital Color Xpressions+、J paper） Static Eliminate Plate = -3 k. V(Fix) Stripping Roll = GND IBT Surface Velocity = 351. 858 mm/sec 2 nd BTB Belt Surface Velocity = IBT +5%Up(With Torque Limiter) Paper Pass D-Roll-B Scraper-B 2 -ESB Stripping Roll Brush-A D-Roll-A Scraper-A Paper Guide View Direction Surface Over Coat (9 um) Surface Rib 0. 45 mm Substrate Stripping Roll or Drive Roll Substrate Inside Rib (Now being developed) Back Surface Over Coat (2 um) 5 mm 2 nd BTB Belt Configuration (Cross Sectional View) 2 nd BTB Belt Inside Surface Length = 125. 8 mm(Diameter = 39. 4 mm) Width = 345 mm Resisitivity = 7. 5 -10 Log ohm(SARM 500 V) Drive Roll Diameter = 28 mm Width = 324 mm Resistivity = 6 Log ohm Max Hardness = 30 degree Stripping roll Diameter = 15 mm Divided into 12 pieces in axis direction Fuji Xerox Confidential 7

Why BTB? (Nov. 13, ‘ 03 training ws) <Conventional technology> Transfer Roll Method Coated paper applicability: 104 gsm or heavier Study done to improve paper strippability using conventional IBT technology ・Nip control by rubber structure on 2 nd X’fer Roll surface ・Bias application to electrode in Belt (SFIDA) ・Smaller BUR IBT Belt Further improvement is required in paper stripping performance for lighter paper. 28 mm (dia) BTR Wrapping Jam POB Jam <New technology for lighter paper> Bias Transfer Belt Method IBT Belt BUR X’fer Roll 28 mm (dia) Coated paper applicability： 64 gsm or heavier Paper feeding direction X’fer Belt 16 mm dia Strip Roll <X’fer nip exit area> <X’fer belt paper stripping area> Smaller curvature (close to flat plane) is effective to keep paper posture stable. Larger curvature (small-diameter roll) works for more reliable paper stripping. Fuji Xerox Confidential 8

Transfer Sub System (Nov. 13, ‘ 03 training ws) Drive Roll Stripping Roll Brush-B V-Tra Chute DTS D-Roll-B V-Tra#1 Scraper-B BTB=Bias Transfer Belt D-Roll-A Brush-A Scraper-A V-Tra#1 Cleaning Brush Fuji Xerox Confidential 9

Bias Transfer Belt Unit (Nov. 13, ‘ 03 training ws) Bias Transfer Belt Unit Fuji Xerox Confidential 10

Bias Transfer Belt & 2 -ESB (Nov. 13, ‘ 03 training ws) ESB Bias Transfer Belt Fuji Xerox Confidential 11

5. 80 ppm BNF (May. 28, ‘ 03) n Merit t Higher commonality of MK 2 (over 70%) t Known failuer mode Venezia BNF n Issue t Toner Blister on 105 gsm coated paper m Countermeasure – 1. Increase convexity amount from 200 to 300 microns keeping the current PAD length to ensure pressure at center area. – 2. Increase PAD length to 22 mm to ensure enough Dwell Time. m Test result: Positive results have been confirmed by both of the two countermeasures in initial evaluations. Secondary effect confirmation and parameter optimization are yet to be done. 90 t Heat Roll Life Mk 2 Mk 3 70 A 4 ppm m No problem was observed in heat-resistant Primer in 200 kpv run m Stripping latitude degradation was observed with 85 gsm coated paper in 150 kpv run. m 100 kpv-replacement operation must not be skipped in field. Mk 1 80 60 50 40 30 20 n Development Plan t Countermeasure selection for Blister problem: by the End of June t Life test : by the End of Oct. 10 0 50 ＭＫ１ １ ＭＫ 2 １ ＭＫ 3 １ 100 ２ ２ ２ 150 ３ ３ ３ 200 ４ ４ ５ ５ ４ 250 ６ ５ ６ ６ 300 gsm 350 OHP OHP Fuji Xerox Confidential 12