Filter
Top Products
Paper Feed System
Both the Paper Input Bin and the Single Sheet Input Slot merge into one, main input
area. Paper placed in either of these areas enables the Paper Out Sensor (sensor
202), which informs the DC Controller that paper is present.
When the printer receives a print job and is ready to print, the DC Controller
enables the Laser/Scanner Assembly and the Motor. Paper motion begins when the
DC Controller energizes solenoid SL1. This causes the paper pick up roller to rotate
once. Two actions occur as a result of this rotation. First, the paper kick plate pushes
the paper against the pick-up roller. Second, the pick-up roller grabs the top sheet
and advances it to the Feed Assembly drive rollers. To ensure that only one sheet is
fed, a main separation pad, along with two subpads, hold the remainder of the stack
in place.
The feed assembly drive rollers advance the paper to the Paper Registration
photosensor (PS203). This sensor informs the DC Controller of the exact location of
the paper’s leading edge, so that the image being written on the photosensitive drum
can be precisely positioned on the page. The feed assembly drive rollers then
advance the paper to the transfer area where the toner image on the photosensitive
drum is transferred to paper.
After the image is transferred, the paper enters the fusing assembly where heat from
the fuser and pressure from the Pressure Roller permanently bond the toner image
to paper. The Paper Exit Sensor (PS201) determines that paper has successfully
moved out of the fusing area. The fusing assembly exit rollers deliver paper to
either the Output Paper Bin or the Front Output slot, depending upon the position of
the Face-up/Face-down lever.
Functional Overview 5 - 15