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HITACHI Printer
Basic Operation Manual
INK JET PRINTER FOR INDUSTRIAL MARKING
Model UX
Thank you for purchasing the Hitachi IJ Printer Model UX. This printer employs a noncontact, ink-jet method to print onto a print target. This Basic operation manual describes the basic handling procedures of the Hitachi IJ Printer Model UX. If the printer is improperly handled or maintained, it may not operate smoothly and may become defective or cause an accident. It is therefore essential that you read the Instruction manual to gain a complete understanding of the printer and use it correctly. After thoroughly reading the manual, properly store it for future reference.
IF you changed the language of screen by mistake,see the Instruction Manual chapter 7.8 "Selecting Languages".
●Ink and makeup 2-
2.1 Ink and makeup
(1) Ink and makeup replenishment
The printer employs an automatic ink/makeup replenishment system. While the printer is operated, the ink reservoir automatically supplies the ink and the makeup reservoir automatically supplies the makeup to the ink main tank at regular intervals. If the ink or makeup replenisher level is too low, an alarm is issued. In this case, replenish the ink or makeup without delay. (For the replenishment procedures, see Section 8.)
(2) Ink periodic replacement
For the replacement procedures, see “Technical Manual Chapter 6”. ●While the IJ printer ink circulates for operations, it reacts with the atmospheric air elements and deteriorates with time. Therefore, it needs periodic replacement. The guide for determining the replacement interval conforms to the handling guidance of each ink.
*What is makeup? :
The makeup serves as the replenisher that makes up for the constituent loss due to ink evaporation during ink ejection. It is also used as a cleaning solution.
2. USAGE PRECAUTIONS
(3) When using the cartridge bottle makeup as the cleaning solution
(^1) Open the makeup cartridge bottle by turning its cap.
● Do not remove the over cap.
CAUTION
(^2) Use the makeup by transferring it to the cleaning bottle.
Cap^ Over cap
Makeup cartridge bottole
Cleaning bottole
● If the cleaning solution is not available, pour the makeup of the makeup cartridge bottle into the cleaning bottle before the makeup cartridge bottle is set. ● Tighten the cap of the makeup cartridge bottle after use. Turn it upside down to check if there is No leakage of makeup. ● If the makeup in the makeup cartridge bottle is used as cleaning solution, the content of makeup in the makeup cartridge bottle is reduced. When it is set in the printer, please use the makeup cartridge bottle which contains more than half of its content. ● In the makeup accidentally spilled, promptly wipe it up with the wiping paper.
CAUTION
●Print head cleaning 2-
2.3 Print head cleaning
Take the following precautions when cleaning ink from around the nozzle.
(1) Orient the end of the print head downward and pour makeup onto the dirty part and clean while catching the makeup in a beaker.
(2) After cleaning, thoroughly wipe the print head with wiping paper and allow it to dry. ●Thoroughly dry the nozzle, charge electrode, deflection electrode, mounting base and fringe of the gutter. Confirm that the parts are sufficiently dry before starting the next operation. If operated while wet, the printer will not start normally. ●While the print head is wet, do not orient its end upward.
(3) Never immerse the print head in the makeup.
(4)When printing is frequently performed or the distance between the print material and the print head is short, ink splashes may stain the end of the print head and the print head cover. If this condition is left unresolved, the stained status will be made worse, resulting in a print error or emergency stop. If a print error or emergency stop frequently occurs because of stain due to ink splashes, stop the operation in progress and clean the end of the print head (around the nozzle, charge electrode, deflection electrode, mounting base and gutter) and the print head cover. Do this in addition to the cleaning to be performed at the end of each day’s work.
Air purging of the print head is effective against staining due to ink splashing. See the Technical Manual “3.1 Print head air purge”.
Cleaning range
Do not pour the makeup over this section. Wipe the print head clean with wiping paper dampened with the makeup.
Nozzle
Deflection electrode
Charge electrode
Gutter
2-4 ●Shutdown
2.4 Shutdown (no-cleaning stop)
When you press the SHUTDOWN → OK at HOME screen, the printer stops after completing its automatic nozzle cleaning sequence. If you repeatedly activate the SHUTDOWN → OK to stop an operation, excessive makeup will enter the printer, thereby thinning the ink or producing an unduly high ink main tank solution level. If it is absolutely necessary to repeatedly stop the printer operation, use the following procedure. (For detail the HOME screen, refer to “Instruction Manual”.)
TEST
Shutdown Process Confirmation Shutdown will stop the ink jet. Solution 1. To stop the ink jet, press .
- To stop the ink without cleaning, press <No-cleaning stop>.
CONFIRMATION
OK No-cleaningstop Close
Press SHUTDOWN at HOME screen, and the message "Shutdown Process
Confirmation" appears.
Press No-cleaning stop on the message "Shutdown Process Confirmation".
**1: Do not use the SHUTDOWN → OK to stop operation more than two successive times. 2: When operation was stopped using SHUTDOWN → No-cleaning stop , if left in that state, the ink will become stuck in the nozzle and cause ink stream bending, nozzle clogging, and printing disturbance. Apply makeup to the nozzle orifice to wash it within 30 minutes after a stop to cause the ink to eject once again.
The no-cleaning stop procedure works even while the startup sequence is being executed. (The SHUTDOWN → OK is inoperative during the startup sequence.)
Press SHUTDOWN.
2-6 ●Ink concentration control
No Ink Concentration Control The current settings have made ink concentration control unavailable. Solution Contact your local distributor.
CONFIRMATION
Close
2.7 Ink concentration control
(1) The ink is automatically controlled to maintain optimum concentration for printing.
(2)If an error occurs in the viscometer which is used to control ink concentration, take care of the following points: There are three types of viscometer errors: “Inside Temperature Sensor Fault”, “Viscometer Reading Instability”, and “Viscometer Reading Out of Range”. When a “Inside Temperature Sensor Fault” occurs, the unit will enter the fault stop state. Re-start is possible by pressing the Close , but the setting will be changed to the state in which ink concentration control based on the measured result using the viscometer is not performed thereafter. Once the setting of automatic concentration control is released, every time the power is turned on, the following message will appear. Cancel the message by pressing the Close and be sure to inform your nearest local distributor.
When “Viscosity Reading Instability” or “Viscosity Readings Out of Range” occurs, the unit will not enter the fault stop state and printing can be continued. However, you should contact your nearest local distributor for inspection.
2.8 Gutter cleaning
The IJ printer collects ink not used for printing from the gutter. At the same time, it sucks in atmospheric gas, dust, and other matter from the air. If these substances are mixed with the ink in the gutter, undissolved components in the ink or makeup may stick to the gutter. If the system is run for 24 consecutive hours without automatic cleaning, these components will gradually accumulate in the gutter. This, together with the ink stream coming into contact with it, may cause such errors as “an error stemming from a dirty head”. Clean the gutter and its perimeters with makeup periodically. Perform the procedures descibed in “6.6 Cleaning the Gutter” in Technical Manual, and claen the gutter and the recovery route. Should the solution above do not work, contact your nearest distributor.
●External views 3-
3. COMPONENT NAMES AND FUNCTIONS
3.1 External views
(1) External views(UX-D,E)
Operating status indicator lamps Displays "Ready", "Fault" and "Warning"
USB cover
On / Stop switch (*Standard Model only)
Main power switch
Power lamp
Maintenance cover Opened/closed for ink and makeup replacement and other maintenance purposes.
Print head This section performs printing.
RFID reader Power cable Reads ID of ink and makeup for certification.
(2) External views(UX-B)
Power lamp
Main power switch
Power cable
Maintenance cover Opened/closed for ink and makeup replacement and other maintenance purposes. Print head This section performs printing.
USB cover
Operating status indicator lamps Displays "Ready", "Fault" and "Warning"
Maintenance cover knob Pull toward you to open.
Maintenance cover knob Pull toward you to open.
RFID reader Reads ID of ink and makeup for certification.
●Main body internal parts arrangement 3-
3.2 Main body internal parts arrangement
Makeup reservoir
Ink reservoir
Recovery filter
Ink filter
Main ink tank
Inner cover
Ink cartridge bottle(*1)
Makeup cartridge bottle (*1)
Appearance with inner cover removed
(*1) The Ink cartridge bottle and the makeup cartridge bottle are optional parts.
Lever handle Lever handle Pressure adjusting screw
3-4 ●Print head
3.3 Print head
Print head cover lock thumbscrew
Nozzle orifice
Minus deflection electrode
Gutter
Plus deflection electrode
Charge electrode
Plus deflection electrode
Nozzle orifice
Gutter
Minus deflection electrode
Charge electrode
Print head cover lock thumbscrew
[UX-D,B]
[UX-E]
Air exhaust port
3-6 ●Screen display
Main Ink Tank Too Full The ink level in the main ink tank is too high. Cause1. The valve (MV2) or valve (MV7) is faulty.
- The High Level sensor in the main ink tank is faulty. Solution1. Drain proper amount of ink in the main ink tank.
- Check the High Level sensor.
- Contact your local distributor.
Main Ink Tank Too Full
The ink level in the main ink tank is too high. Cause1. The valve (MV2) or valve (MV7) is faulty.
- The High Level sensor in the main ink tank is faulty. Solution1. Drain proper amount of ink in the main ink tank.
- Check the High Level sensor.
- Contact your local distributor.
(2) Message
For details of message, refer to "9. When Warning or Fault was generated".
[New HMI]
[Previous HMI]
Message name (^) Message type
Message No.
The Description, Cause and Solution
Button
Close HELP
Message No. Message name^ HELP
The Description, Cause and Solution
Button
●Installing Precautions 4-
● The employed ink and makeup contain organic solvents. Furnish an adequate space for the ink/makeup handling area and printer installation site. A space of at least 200 m must be provided per print head. Ensure that adequate ventilation is provided. Follow all regulation in your country.
CAUTION
3
IJ printer
Maintenance area
300 mm
Top view
300 mm
300mm
750mm
4. INSTALLING PRECAUTIONS
● Ensure that there is no flame- or arc-generating device around the printer. The ink and makeup are both flammable and may cause fire. Fire can be generated by matches, lighters, cigarettes, heaters, stoves, gas burners, welders, grinders and static electricity. Arcs may be generated from open-type relays, switches, and brush motors. Before handling the ink and makeup, remove static electricity from your body, peripheral equipment, and so on. In the interest of safety, position a dry-chemical fire extinguisher near the printer.
● Since the ink and makeup contain organic solvents, install the printer at an adequately ventilated location. Never install the printer in an enclosed space. Connect exhaust equipment to the printer in order to prevent it from filling with organic solvent vapor.
WARNING
(1) Provide a clearance around the IJ printer for daily operation, handling, and maintenance access (see the figure at right). (2) The print head needs to be cleaned with the makeup while the printer is operated and stopped (daily maintenance). Adopt a fixed structure in consideration of print head cover and print head removal. (3) Installation must be completed so that no vibration will be applied to the IJ printer main body, print head, or print head cable. If they are vibrated, print quality deterioration and print irregularity may be incurred (the maximum permissible vibration value is 1.96m/s ). (4) The IJ printer main body must be installed with a levelness error of not over ±1°. (5) The IJ printer main body must be electrically insulated from the other equipment (conveyors, packing machines,etc.), photoelectric switches, and the rotary encoder. (6) The standard distance between the printing head and the object to be printed on is as indicated in the right-hand table. The smaller the clearance between the print head and print target, the smaller the character height and the better printing. (7) The IJ printer proper requires maintenance as the occasion may demand including replenishment of ink and makeup and replacement of filter. (8) If ambient humidity is 85 to 90%RH, you must purge inside of print head by air. It is necessary for dry-clean air, regulator for pressure of air and air filter. (Quantities of the air are 1L / minutes.)
- Leave a maintenance area of at least 20 cm for the upside of printer.
Distance between the printing head and the object to be printed on
Nozzle diameter Distance
65 μm 10 to 30mm
2
●Installing Precautions 4-
(14) If you try to fix the print head with a magnetic substance (such as iron), the cover switch will malfunction resulting in an "Cover Open" error. This, you must only use nonmagnetic resins or metals for fixing the print head.
(15) In the case of carrying the printer proper, use the handles in the drawing below.
Print head
Print head cable
Bend R 0.5m
Connect a duct to this port (50 mm in diameter).
Exhaust duct connection port
(10) When using the printer for upward or lateral printing, ensure that the rising print head cable upper end is positioned not more than 0.5 m above the print head.
(11) If you fixed the print head, ensure that the minimum bend radius of the print head cable is at least 150 mm. Handle the headcable with care when wiring it. If the minimum bend radius is less than 150mm, the tubes and wires inside the headcable might be broken. (12) The ink stream may bend for some reason or other (due, for instance, to dirt). The facilities positioned in the direction of ink ejection should be partially covered as needed to avoid ink accumulation. (13) When connecting an exhaust duct to the printer, install a damper and adjust the wind velocity at the intake port to 0.3 to 0.5 m/s. (Use an anemometer for verification. If the wind velocity is too high, the makeup consumption increases.)
5-1 ●Print head air purge
5.1 Print head air purge
If the makeup remains in the electrode section after cleaning or if you use the IJ printer at a high humidity, moisture condensation may occur within the print head, causing leakage from the deflection electrode section. It is also important to remember that dust or splashed ink accumulation on the deflection electrode section may cause leakage. Performing the following air purge procedure for the print head interior is effective in preventing such leakage.
5. INSTALLATION CHECK ITEMS
If the air-purge amount is excessive, print irregularities may occur. After air-purge pressure adjustment, be sure to perform a printing test to verify the printing results.
(1) Situations requiring an air purge
When the printer is used in a highly humid place such as a beer or other beverage can line (If you use the printer in an environment in which the relative humidity is 85% or higher, complete the print head air-purge procedure). When a water drainage blow sequence is performed before printing. When the printer is used in a place where a considerable amount of paper powder or other dust exists. When the printing distance is short so that the end of the print head is splashed with ink. When you use inks that are indicated on the handling guidance of each ink to complete air-purge procedure.
(2) Air-purging procedure
Introduce clean dry air into the print head air purge connection port (Rc 1/8 (PT 1/8)×screw) in the rear of the printer main body at a pressure of about 0.1 to 0.3 MPa. If it is possible that the employed air tanks oil or water, turn it into clean dry air with an air filter, micro-mist separator, or the like before introducing it into the printer main body.
NOTICE
Max. tightening torque:1.5N m.
6-2 ●Wiring precautions
(3) Precautions related to welding current of welder
Signal (weak electric) ground and frame ground are connected because the ink drops of the IJ printer are electrically charged.
The ink drops are electrically charged by impressing a volt- age between the charging electrode and ink column as shown at the left. Therefore, the ink always becomes signal ground. In addition, since the ink is always connected to frame ground by the clamp, etc. of the circulation path, separating signal ground and frame ground is difficult.
Charge theory
Therefore, when a large current (for example, the welding current of a welder) flows from the outside through frame ground, the current is also diverted to signal ground and the PC boards may be damaged. For this reason, when performing welding work near the IJ printer, proceed as follows:
Method
Be sure to insulate the printhead and IJ printer frame to keep the welding current from flowing to the control section of the printer, and to make a separate ground connection for the printer. If this method is used, welding work becomes possible even while the IJ printer is operating.
●Fire is strictly forbidden around the IJ printer The ink and makeup are both flammable. Welding sparks may cause ignition or a fire. Take measures so that sparks do not enter the surrounding area whether or not the IJ printer is operating, and ventilate sufficiently. Just in case, ensure safety by installing a powder type fire extinguisher nearby.
WARNING
