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EP PRINTING Jonathan Erbelding Sakif Noor
EP PRINTINGJonathan Erbelding
Sakif Noor
REVIEW OF BACKGROUND
Electrophotographic Printing (EP) test rig originally from Kodak
P09503 modified for improved usability and automation
LabView controls implemented for automation
Has station for major steps:Charging, Exposure, Toner, TransferFusing occurs on a different rig
Exposure step is performed with a negative. Cannot print file from computer.
Our Problem: Test pattern cannot be specified from computer
EP PROCESS (PART 1 OF 2)
EP PROCESS (PART 2 OF 2)
CUSTOMER NEEDS
Customer Needs and Objectives
Project Category Need Number Customer Need Description Importance
EP Printing Test Rig
Hardware1.1 Interfaces with current Test Rig hardware 9
1.2 Exposes photoconductor for selective discharge step 9
Software
2.1 Accepts computer input to specify exposure image 9
2.2 Controls exposure charge of photoconductor 3
2.3 Interfaces with current LabView control 3
Quality 3.1 Provides resolutions competitive with standard printers 9
Cost 4.1 Fits within budget 1
Other5.1 Is safe 3
5.2 Maintenance of system is documented 9
FUNCTIONAL DECOMPOSITION (CURRENT)
FUNCTIONAL DECOMPOSITION (SOLUTION)
METRICS AND SPECS VALUES
METRICS AND SPECSPARETO FROM HOUSE OF QUALITY
DPI
Erro
r in
spee
d (o
f mot
or/ca
rriag
e)
Smal
lest
Ste
p (m
otor
res)
Tim
e re
solu
tion
(Lig
ht sou
rce)
Prin
t Are
a
Max S
pd fo
r car
riage
File
form
attin
g
Volta
ge A
fter e
xpos
ure
Metho
ds to
gen
erat
e pa
ttern
Labv
iew In
terfa
ce
Budge
t0
20
40
60
80
100
120
140
160
180 Pareto of Spec Importance
Import
ance S
core
CONSTRAINTS
1) Can ONLY modify the exposure step of the current rig.a) Has to fit into current rig: ~15"wide x 10" x 12" high
space but more, non-rectangular, space is available & can be measured
b) does not adversely affect other stations
2) Potential safety hazards must be clearly visible, marked, and avoidable
DELIVERABLES
1) Functioning exposure setup integrated into current rig.
2) Senior design paper detailing design process.
3) Manual with instructions for safety, use, and
maintenance.
CONCEPTS LED Bar-An array of tiny LEDs is individually turned on and
off to apply the light
-Harvest from printer
LASER Head-Laser is directed by a reflector of some sort while
turned on and off very quickly
-Harvest from printer
Digital Micromirrors-Commonly used in projectors
-Build custom head
Image from Reference 3
Image from Reference 2
Image from Reference 5
SUGGESTED STAFFINGDiscipline Quantity Skills Needed For:
EE 1-2-Motor control, interfacing with circuitry and microcontrollers.*
ME/ISE 1-2
-Systematic disassembly of printer and integration of resulting exposure setup into physical rig. Basically anything involving arranging and supporting the physical components.
-LabVIEW* and some motion control.
Comp E 0-1
-Print pattern file handling and possibly some driver work, all for Windows.*
-Also could be of use in motor control, interfacing with circuitry and controllers.
*The overall program will have to somehow interface with the existing LabVIEW program. This may be as simple as having it call another program to print or the entire program may be in LabVIEW.
Total should be 3 or 4 people.
QUESTIONS?
REFERENCES1. Digital micromirror device. (2013). Retrieved from Wikipedia.com:
http://en.wikipedia.org/wiki/Digital_micromirror_device
2. Harris, T. (2007, March 14). How Laser Printers Work. Retrieved from HowStuffWorks.com: http://computer.howstuffworks.com/laser-printer.htm
3. Lamb, R. (2012, May 22). How LCD Projectors Work. Retrieved from HowStuffWorks.com. : http://electronics.howstuffworks.com/lcd-projectors.htm
4. Newegg Inc. ( 2013, April 18). Laser Printers, Monochrome. Retrieved from Newegg.com: http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=100008048%20600046504&IsNodeId=1&bop=And&Pagesize=100
5. Nuuja, R. E., & Potini, S. (2009, April). The reinvention of LED printing: New Xerox HiQ LED delivers colourful, high-resolution output. Retrieved from www.office.xerox.com: http://www.office.xerox.com/latest/W74WP-01E.pdf
