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PROFLOW ATX OVERVIEW 12.8 Technical Reference Manual Chapter Issue 6, Jan 16 Figure 12-4 T ransfer Head Unit S t atus During Charging Action The Archimedes screw and conditioning gr id stop rotatin g, the system pressure…

PROFLOW ATX

OVERVIEW

Chapter Issue 6, Jan 16 Technical Reference Manual 12.7

Print Medium

Recharging

At the end of a print stroke, if the print medium demand sensor detects that the

print medium level is low, the ProFlow ATx system recharges the transfer head

from the print medium cartridge.

Figure 12-3 Demand Sensor

During the recharge process, the print rails remain raised to support the transfer

head, and system pressure is applied to the ProFlow ATx system to prevent any

leakage. The print medium pressure is released, raising the crosshead piston

and creating a void in the conditioning chamber. Pneumatic pressure is applied

to the print medium cartridge driving print medium to the transfer head inlet and

on to the Archimedes screw. The Archimedes screw rotates for a set period of

time delivering the print medium into the conditioning chamber. The rotating

conditioning grid prepares and distributes the print medium ready for applica-

tion.

View on Left Hand Front Corner

Print Medium Demand Sensor

Print Medium Cartridge

Transfer Head Inlet

PROFLOW ATX

OVERVIEW

12.8 Technical Reference Manual Chapter Issue 6, Jan 16

Figure 12-4 Transfer Head Unit Status During Charging Action

The Archimedes screw and conditioning grid stop rotating, the system pressure

is relaxed, and print medium idle pressure is applied.

NOTE

Recharging the transfer head is an automatic process and requires no interven-

tion from the machine operator.

Rolling Conditioning During recharging, the conditioning grid rotates. This action keeps the print

medium in the optimum condition required for successful printing.

During the print process the rotation of the conditioning grid, working together

with the print medium pressure, forces print medium into the apertures of the

stencil.

Cross Section on Left Hand Side of Transfer Head

Paste Pressure

Piston

Archimedes Screw

Conditioning

Grid

Crosshead Piston

System Pressure

Medium

Inlet Port

Direction of

Print Carriage

Medium

Cross Section on Left Hand Side of Transfer Head

Conditioning

Grid

PROFLOW ATX

OVERVIEW

Chapter Issue 6, Jan 16 Technical Reference Manual 12.9

Transfer Head

Base Cover

The ProFlow ATx system has a base cover which is fitted to the base of the

transfer head to keep the print medium sealed during:

• Non-operation

• Fitting/Removal of the Transfer Head

• Temporary Storage

NOTE

Temporary storage time is dependent on the print medium used, see manufac-

turers recommendations. If storage time exceeds the recommendation, the

ProFlow transfer head must be emptied and cleaned.

The transfer head base cover:

• Prolongs the life of the print medium by sealing the transfer head

• Prevents the operator from coming into contact with the print medium when

removing or fitting the transfer head

• Prevents damage to the wiper blades and skis when removing or fitting the

transfer head

• Prevents print medium from dripping into the printer when removing or

fitting the transfer head

View on Front Left Corner

Base Cover

Locking Clips

Transfer Head Sealing Plug