Biuged Laboratory Instruments BGD 626, Instruction Manual, Page: 5 / 7

4. 2. Proofing unevenly
Reason Examination & Solution Reference Column
Insufficient
distributing time or
wrong distributing
method.
Examination: observe whether the ink attach with the
platen homogeneously.
Solution: extend distributing time; use metal and
rubber platen to distribute ink intermittently.
Distribution must be intermittent so
that the ink can be dispersed
homogeneously.
Rubber platen or
main axletree is
damaged.
Examination: take apart the platen or axletree to
observe.
Solution: change the damaged part.
Platen and axletree are made in
Germany or Japan.
4. 3. Color is distorted
Reason Examination & Solution Reference Column
Insufficient pressure
(especially for lubricous
surface).
Examination: press
“
Emergency Stop Button
”
during
proofing to examine the width of the ink bar.
Solution: adjust the width of the ink bar to 5-6mm
The width of ink bar can be adjusted
by adjusting the pressure device.
The substrate has poor
adhesiveness or deep
grain.
Solution: take a little ink, dilute it with transparent ink
(lacquer varnish) to reduce the viscosity and increase
the fluidity, and then enhance the proofing pressure.
Modify the viscosity and fluidity of the
ink has little effect on the color. Retain
the adjusted ink for color matching
next time can obtain higher accuracy.