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Confidential
Paper Holding Section
The paper roll holding mechanism is a shaft support type. The paper roll holding section
consists of the shaft, paper roll fixed to the frame, main assembly, the holder, paper roll A
(for the inner diameter of the paper core: 25.4 mm {1 inch}) that fits the size of the paper roll core
used, and paper roll hold unit that holds the sides of the paper roll.
The paper roll hold unit is supported by the holding plate, paper roll so that it can open/
close. The plate, fixed slides into the groove of the shaft, paper roll and is automatically
locked when the paper roll hold unit pushes against the shaft, paper roll. To open the paper
roll hold unit, see the illustration (a sticker) on the plate, fixed: slightly lift the bottom of the
plate, fixed in the direction of the arrow (upwards) to release the lock, and then pull it toward
the near side to open the unit. (For the illustration of the sticker, see page 3-6.)
Note:
If the paper inner core dimension differs from the holder, paper roll A due to the paper thickness, you
can replace it with the holder, paper roll B (for the inner diameter of the paper core: 50.8 mm {2 inch})
or the holder, paper roll C (for the inner diameter of the paper core: 76.2 mm {3 inch}) packed in the
box. (See page 6-37, "Assembly and Disassembly." for replacement.)
Paper Load-absorbing Mechanism
The paper load-absorbing mechanism consists of four parts: the roller, paper roll tension, the
shaft, paper roll tension roller, the frame, paper roll tension, and the spring, paper roll
tension. The roller, paper roll tension receives the paper tension. The shaft, paper roll
tension roller supports the roller, paper roll tension so that the roller, paper roll tension can
rotate. The frame, paper roll tension fixes the previous two parts and is mounted on the shaft,
paper roll. The spring, paper roll tension is hooked on one end to the frame, main
assembly, and on the other end to the frame, paper roll tension.
Using the paper tensile force generated when feeding the paper, this mechanism oscillates the
roller, paper roll tension around the shaft, paper roll, and reduces the paper feeding load due
to inertia of the paper roll.
Note:
In order to use the function of this mechanism properly, paper must be fed along the paper route indicated
in the illustration on the paper roll hold unit. Feeding paper along the paper route other than the route
in the illustration may cause improper operation or printing disorders.
Paper NE Detector
The paper NE detector has two kind of detections, the primary NE detection and the
secondary NE detection. The primary NE detection can detect the amount remaining on the
paper roll using a reflecting photo sensor. After the primary NE detection, the secondary
detection can be used to return the status when the paper is fed to the length specified by the
memory switch setting. (See SW No. 2, 3 in Table 2-8 [page 2-22])
The paper NE detector is mounted on the frame, paper roll tension, and is secured with the
screw, NE detector. The position of the paper NE detector can be altered to adjust the setting
for the amount remaining on the paper roll. (See "Paper NE detector setting method"on page
3-9.)
2-2 Operation Principles
Rev. A
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