1. Read all of these instructions carefully and thoroughly and save them for later reference.
2. Follow all warnings and instructions in the manual as well as marked on the product.
3. If the printer has been used just now, please not touch the print head for overheating.
4. Do not put your fingers under the tractor cover of the left and right tractors when installing the tractor
paper.
5. Unplug this product from the power outlet before cleaning. Do not use liquid or aerosol cleaners. Use a
damp cloth for cleaning.
6. Do not use this product near water.
7. Do not place this product on an unstable cart, stand or table. The product may fall, causing serious
damage to you or the product.
8. Slots and openings on the cabinet and the back or bottom are provided for air ventilation. To ensure
reliable operation of the product and to protect it from overheating, do not block or cover these
openings. The openings should never be blocked by placing the product on a bed, sofa, rug or other
similar surface. This product should never be placed near or over a radiator or heater. This product
should not be placed in a built-in installation or kiosk stand unless proper ventilation is provided.
9. This product should never be placed near or over a radiator or heat origin, and should avoid of direct
sunshine.
10. Do not locate this product where the cord will be walked on. When the cord or the plug is mangled,
please stop using and get a new one replaced. Make sure the old one is far away from the printer, so it
can avoid someone who does not know the inside story getting damage.
11. Do not use in locations subject to high humidity or dust levels. Excessive humidity and dust may cause
equipment damage or fire.
12. Never push objects of any kind into this product though cabinet slots as they may touch dangerous
voltage dots or short out parts.
13. Don’t remove the printer’s out-cover and repair the printer. When needed, call or take it to the
professional.
14. To ensure safety, please unplug this product prior to leaving it unused for an extended period. The wall
outlet you plan to connect to should be nearby and unobstructed.
15. Unplug this product from the power outlet and leave servicing to qualified service personnel under the
following conditions:
A. When the power cord or plug is damaged or frayed.
B. If liquid has been spilled into the product.
C. If the product has been exposed to rain or water.
D. If the product does not operate normally when the operating instructions are followed. Adjust only
those controls that are covered by the operating instructions since importer adjustment of other
controls may result in damage and will often require extensive work by a qualified technician to
restore the product to normal operation.
E. If the product has been dropped or the cabinet has been damaged.
F. If the product exhibits a distinct change in performance, indicating a need for service.
Note: The contents of this manual may be changed without prior notice.
* All parts of the printer can be recycled. When it is abandoned, we can call it back freely. Please
2.4 Installing the Printer ............................................................................................................................4
2.5 Installing and Dismantling the Front Table...........................................................................................5
2.5.1 Install the Front Table ...................................................................................................................5
2.5.2 Dismantle the Front T
2.6 Installing the Paper Feed Knob ...........................................................................................................6
2.7 Installing the Ribbon Cartridge ............................................................................................................6
2.8 Connecting to Your Computer .............................................................................................................7
2.8.1 Connecting to the USB Interface
2.8.2 Connecting to the Parallel Interface..............................................................................................8
2.8.3 Connecting to the Serial Interface ................................................................................................8
B.3 Printable Area ...................................................................................................................................40
B.3.1 Cut Sheet, Card, Post Card........................................................................................................40
B.3.2 T ractor Paper..............................................................................................................................40
This versatile, 24-pin, flatbed High-speed Bill printer is ideal for a wide range bill printing requirements,
includes national standards GB18030 big capacity Chinese character set, elaborated design in speed, copy
capability and paper thickness applicability. Especially for value-added tax invoice, common invoice,
various service trades invoice, narrow card printing and continuously bill printing.
Flatbed Paper-feed Mechanism
Flatbed paper-feed mechanism can avoid crease caused by tractor rolling. So that some document papers,
such as multi-ply invoice, envelope, postcard and label and so on, can smoothly in and out without jam.
Automatic paper Load/Eject Function
Cut sheet may be fed from the front of the printer automatically. Finish printing, the paper may be
automatically fed back to the front of the printer. Tractor paper is installed on the tractor. Press
LOAD/EJECT key, paper may be fed to print position automatically. Finish printing, the paper may be fed to
the front of the printer in order to tear conveniently.
Zero tear-off Function
This causes tractor paper to be automatically fed to the tear-off position at the edge of the window cover, for
easy tear-off at the perforations after printing. This zero tear-off capability helps eliminate paper wastage.
Paper Eject Function
This function allows users pressing the facility function button on the control panel to eject the cut sheet or
tractor paper from the printer.
High Resolution Graphics
A maximum resolution of 360 × 360 DPI enables the printer to produce fine, sharp graphics.
Emulation
The printer supports the OKI 5530SC and Epson ESC/P-K2 emulation as standard.
Large Capacity Data Buffer Area
132KB large capacity data buffer area can minimize the employing time of your computer, it allows your
computer to release the printing buffer area to other work.
Contain Letter Character Font
This printer contains variously fonts of Roman, Sans Serif, Courier, Prestige, Script, OCR- A, OCR- B,
Orator and so on which making printed document prettier.
Bar Code Function
The printer contains the following standard bar codes: EAN-13, EAN-8, Interleaved 2 of 5, Matrix 2 of 5,
Industrial 2 of 5, Code 39, Code 128 B, Code 128 C, and NW 7.
User- Friendly Control Panel
Current print status and access to all printer functions is available via simple commands from the control
panel. In addition, the control panel is used to access the menu system (Setup Menu System) with
complete control over the printer’s set-up functions.
Automatic Interface Switching
The DP550 includes a USB interface, a parallel interface, an Ethernet interface or a serial interface
(According to the specific interface standards). The printer automatically detects the type of data transfer
received from the host computer and switches to the respective interface type.
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