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DocuPrint 900/1300 User’s Guide
Introducing the DocuPrint 900/1300
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Step 1: Generating Latent Image
The printhead, also known as the print cartridge, generates electrons and
controls their emission from an array of holes in the printhead. The electrons
are projected onto the insulating surface of the imaging drum. There are
10,944 holes in the printhead. Each hole prints one dot position across the
web. Dots are positioned in the direction of the web by synchronizing the
projection of electrons with the rotation of the drum.
The print pattern
originates in the VISTA
console. A printed page
description is sent to the
RIP (raster image
processor), to form an
electronic dot image. This
image is processed in the
print RAM to create the
data and timing signals
necessary to control the
operation of the circuit
boards that generate and
control the flow of
electrons. (Together, these
boards are known as the
driver board set.) Finally, the driver board set applies the voltages to the
printhead, which in turn generates and modulates the electrons.
The resulting charged pattern (latent image) is not visible at this stage.
Step 2: Applying Toner
As the imaging drum rotates
past the toner roller (toner
magnet), the latent image is
made visible by applying
toner.
The toner is a black powder
that includes a small amount
of magnetic material. The
toner magnet roller holds the
toner as it rotates past the
imaging surface.
The latent image on the drum
attracts toner particles from
the toner roller and holds
them on the imaging drum.
Printhead
Imaging
drum
The printhead
projects electrons onto
the imaging drum,
an invisible image
(charge) on the drum.
Printhead
drum
Imaging
Toner
Toner
magnet
Toner is attracted
to the charged
surface, creating
a visible image.
DocuPrint 900/1300 User’s Guide
2-1
C h a p t e r
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System Components:
Basic Operation and Control
This chapter describes the basic operation and control of the following system
components that make up the DocuPrint 900/1300 printing system:
VISTA console
Duplex printer cabinet
Dual print engines
Two print engine card cages
Operator control panel
Main switch and circuit breaker panel
Printing system support devices
Radiant fuser cabinet
Fuser control cabinet
Vacuum cabinet
Power tower
Programmable logic controller
Web guide controller
Six DC power supplies
Drive train motor
Computer cabinet
Optional cartridge tape drive
Service switch
100BASE-T hub
Page tracker computer
VISTA PC base unit
Uninterruptible power supply
Large roll unwinder
Output pacer
Printhead washer/dryer unit
