FO-880PL/PT/HU
FO-880GG/CS
Separation rubber5. Recording blockLast page of document
(1) General view
Back of document
RP release plate
First page of document
Platen roller
PO roller
PU roller
Paper feed springPinch roller
Paper feed rollerPO gudeRotation
plate
Fig. 4Film cartridge
RP
3-5. Documents requiring use of document carrierhopper
1) Documents smaller than 148mm x 140mm.
2) Documents thinner than the thickness of 0.06mm.
Take-upSupply
3) Documents containing creases, folds, or curls, especially those whosesideside
surface is curled (maximum allowable curl is 5mm).Thermal Haad Film sensor Imaging film
lever
4) Documents containing tears.Fig. 6
5) Carbon-backed documents. (Insert a white sheet of paper between5-1. Driving
the carbon back and the document carrier to avoid transfer of carbon
In the drive mechanism, the rotating force of the pulse motor for both
to the carrier.)
transmission and reception is transmitted to the paper supply roller, the
recording paper feed roller and imaging film drive gear through the pulse
6) Documents containing an easily separable writing material (e.g., those
written with a lead pencil).motor axle gear, reduction gear and planetary gear.
7) Transparent documents.
5-2. Recording
8) Folded or glued documents.
This equipment employs the thermal transcription system which used
Document in document carrier should be inserted manually into the thermal head imaging film.the
feeder.1) Thermal head
The thermal head is composed of 2,016 heating elements in traverse
line, and the resolution power is 8 dots/mm. The maximum speed is 10
4. Document releasems/line.
4-1. General2) Structure of recording mechanism
To correct a jammed document or to clean the document running sur-Recording is achieved by applying a suitable pressure to the thermal
head through the imaging film of the recording paper feed roller and the
face, pull the insertion side of document center of the operation panel.
recording paper.
To open the upper document guide, the operation panel must be opened
The main scanning is electronically done, and the sub-scanning is me
first.
chanically done (by sending the recording paper with the recording pa-
per feed roller).
4-2. Cross section view
3) Recording paper transfer sequence
Operation panel unita) The recording paper stored in the RP hopper is fed with the PU roller,
and the recording paper is stopped when the P-IN sensor is turned
on by sensing its lead edge.
b) Hereafter, the imaging film and recording paper are transferred with
the recording paper feed roller, and thermal transcription is done on
the recording paper.
c) After thermal transcription, the imaging film is taken up by the roller
on the take-up side, and the recording paper is discharged by the PO
roller.
As basic, the density unevenness mainly results from the longitu-
Lower cabinet
dinal misalignment of the thermal head to the heater line. Otherwise,
Fig. 5the head is in uneven contact with the recording paper feed roller, or
the imaging film is wrinkled.
The following items are described as the simplified checking method.
1 Are the power and signal cables of the thermal head suitably treated?
2 Does the same symptom appear even if the thermal head pres-sure
spring is replaced?
3 Is the feed roller of the recording paper concentric? (Density is un-
even at intervals.)
4 Does the same symptom appear even if the thermal head is replaced?
5 Is the imaging film stained or wrinkled?
3 � 2 |
ACEC
