FO-50A
FO-70A
Separation rubber5. Recording blockLast page of document
5-1. General view
Back of document
Recording paper(CUTTER MODEL)
Scanner frame
First page of document
Platen roller
Cutter guide
Pinch roller
Feed plate
Paper feed roller
Fig. 4
3-5. Documents requiring use of document carrier
Paper guide
1) Documents smaller than 148mm x 140mm.Head guide
PO rollerCutter unit
Thermal head
2) Documents thinner than the thickness of 0.06mm.
(NON CUTTER MODEL)Recording paper
3) Documents containing creases, folds, or curls, especially those whose
Scanner frame
surface is curled (maximum allowable curl is 5mm).
4) Documents containing tears.Platen roller
5) Carbon-backed documents. (Insert a white sheet of paper betweenPO guide
the carbon back and the document carrier to avoid transfer of carbon
to the carrier.)
6) Documents containing an easily separable writing material (e.g., those
written with a lead pencil).
7) Transparent documents.
8) Folded or glued documents.Paper guide
Head guide
Document in document carrier should be inserted manually into theThermal head
feeder.
Fig. 6
4. Document release5-2. Driving
Via the pulse motor gear shaft, the reduction gear, and the recording
4-1. General
paper feed gear, rotation of the pulse motor is conveyed to the recording
To correct a jammed document or to clean the document running paper fsur-eed roller to feed the recording paper.
face, pull the insertion side of document center of the operation panel.
5-3. Recording
To open the upper document guide, the operation panel must be opened
first.Use of a thermal head permits easier maintenance and low operating
costs.
4-2. Cross section view1) Thermal head
The thermal head consists of 1728-dot heat elements arranged in a sin-
gle row and has the resolution of 8 dots/mm. The maximum recording
speed is 10ms/line. The thermal head also incorporates a 1728-dot shift
register latch and output control driver circuit. Low power consumption is
achieved by dividing the head into nine segments.
2) Structure of the recording mechanism
Operation panel unit
Recording is accomplished by pressing the thermal head on the record-
ing paper against the platen roller.Scanner frame unit
CIS release leverThe main scan (horizontal) is electronically achieved, while the subscan
(vertical) is achieved by moving the recording paper by the recording
platen roller.
Lower cabinetPWB case unit
Usually, the cause for uneven print tone is caused by misalignment of
the thermal head or uneven contact with the roller.
It can by checked in the following manner.
1) Check if the thermal head power and signal cables are properly routed.
2) Check that the thermal head pivot moves smoothly up and down.
3) Check that the thermal head support bracket is secured without any
play.
Fig. 5
4) Check to see that the recording platen roller has proper concentricity,
in the case of a print tone variation evenly repeated down the page.
5) Replace the thermal head with a new one and check to see if the
same trouble occurs.
3 � 2 |
ACEC
