The Team Clockwise from Left - Rachel Chrash (EE), Min-Shi Hsiao (EE), David Schwartz (Team Lead -...
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The Team Clockwise from Left - Rachel Chrash (EE), Min-Shi Hsiao (EE), David Schwartz (Team Lead - IE), Andrew Kearns (EE), Sasha Oliver (CE), Ruth Gay
The Team Clockwise from Left - Rachel Chrash (EE), Min-Shi
Hsiao (EE), David Schwartz (Team Lead - IE), Andrew Kearns (EE),
Sasha Oliver (CE), Ruth Gay (ME), Dan Summers (ME) and Phil Lopez
(ME). Special thanks to: Bill Nowak Consultant, Xerox Greg Miller
Consultant, Kodak John Wellin Consultant and Parts, Mechanical
Engineering Dr. Jon Arney Consultant, Center for Imaging Science
Dr. Susan Farnand Consultant, Center for Imaging Science John Bonzo
Parts, Brinkman Laboratory Electrophotographic Development and
Transfer Station Electrophotographic Development and Transfer
Station P09503 Project Objective The purpose of project P09503 is
to make an existing Electrophotographic Development and Transfer
Station functional and to improve the usability, safety and sensing
abilities. Electrophotography (EP), seen below, is the base
technology used in most modern day copiers and printers. The
functional station will be used for research in the RIT PRISM
Laboratory. Paper Delivery System The existing system required
manually catching the paper after application of toner from the
transfer drum. Risks of this operation include marred image quality
due to poor handing as well as high voltage and pinch point hazards
at the pneumatically operated transfer drum. The solution was to
create a system to catch the paper without user intervention.
Electrostatic Voltage Measurement System Monitoring the potential
on the photoconductor after charging and exposure will help to
understand the dark decay and charge uniformity of the
photoconductor. Mounts were machined in order to hold the
electrostatic probes within range of reading the potential of the
photoconductor. The probe was connected to the LabView interface to
centralize process data. LED Exposure System An LED array replaced
the current incandescent projector bulb to expose the
photoconductive material. The advantages an LED array is decreased
power consumption, longer system lifetime, minimal potential to
overheat, and inexpensive to replace if needed. The LEDs would also
prove to be a more reliable and versatile light source.
Electrophotographic Process Control and Automation Critical to
system functionality, all devices were connected to a PC via a Data
Acquisition Device and controlled by LabView. LabView was then
programmed to automate the electrophotographic process. LabView
provides the user the option for full automation or manual
operation for advanced users. Photoconductor Imaging System Imaging
the photoconductor following application of toner will increase the
flexibility of the user to monitor and understand the
electrophotographic process in conjunction with the electrostatic
voltage measurements. A mount was machined to hold a Nikon DLR
camera. The camera is controlled and images are viewable via
LabView. ISO Compliant Safety Signs The electrophotographic process
requires extremely high voltages and quick translational movements
to transfer electric charge and toner to a substrate. The
implementation of higher visibility warnings signs will alert
system users to hazards such as high voltage and pinch points. The
improved visibility warning signs will be compliant with the ISO
and will encompass the type of hazard along with safety information
in word and symbolic form. LED System LED Array Uniformity EP
Process Electrostatic Probe Mount User Interface and Camera Mount
Paper Delivery System