Senior Design Detailed Design Review Notes

Senior Design Detailed Design Review Notes

Taken by Whitney Domigan

Feb. 13, 2009

Note- These notes are slightly edited. Only the most relevant notes and comments are here.

Speakers:

M- Marcos

N- Bill Nowak

K- John Knapp

A- John Anry

S- Grace Spirington

C- Tony Condelo

Notes:

C- concern with not having springs in design- load is effected by paper thickness, need some compliance

K- there are other printers today that achieve 3-4000 psi

C- his lab just ordered a scanner for quantifying pressure on certain films (accuracy +/- 2%)

M- what are we delivering at end of SDII? Looks like parameters and data are a big part of that that, what effects our results most? Delivering more than just the hardware

C- what are we doing about cleaning the fuser? will we need it? What do we load to without the paper to get the correct paper load?

N- clarify why we are using springs, how much does load change with different paper or springs?

C- check paper width used in calculations…

N- what about the time constant? How does time affect the fusing?

A- what is the range of E values for paper? with humidity?

**C- can get us a better E_paper value

C- concerns about bottom roller deflection may be significant

C- concerns with our applied load being too low- he’s gotten more on order of 6000 lb required

K- check accuracy of ANSYS models

K- go back and look at generated pressure

C- they get 1.3-3 mm deflections with 5000 psi

A- for future presentations, rework computer data to make understandable for audience

C- with their set up, draw ~200-250 W at 5000 psi

S- worry about heating in the cavity of the printer, where are losses going?

C- if rollers heat up, could make toner stick to rollers

M- if we go outside RIT for machining, may have higher costs than inside RIT

**K- has info on paper damage vs. pressure he can get to us

C- concern about paper not entering nip perfectly parallel and the damage that could come from that

K- find the limit load of our design!