What’s The Pros & Cons of Epson, Toshiba and Ricoh Print Head?

At present, the most common UV printer nozzles in the industry are Epson, Toshiba and Ricoh. The life, accuracy and stability of the nozzle directly affect the use of subsequent equipment. The core is to look at the price of the nozzle, the cheap nozzle is not expensive, in fact, this is a lot of customers are not particularly aware of the nozzle, and now for everyone to spread some small common sense about the UV printer nozzle.

UV flatbed printer

From the perspective of print fineness, Epson’s nozzle is the finest, followed by Toshiba and Ricoh again. The color printed by the Epson nozzle is more saturated, because it has a finer orifice and a smaller ink point, which improves the overall printing effect. Toshiba nozzles are second only to Epson, Ricoh’s nozzles are larger, and the three machines will be more obvious at the same time.

inkjet printer head

We know that the print speed is determined by the fineness of the printhead, the quality of the print, and the size of the print. The same print material, print pattern, print format to compare, Epson’s print speed is the slowest, followed by Ricoh, and finally Toshiba. Toshiba prints are twice as fast as Epson.

1, printing accuracy: Epson dx5 nozzle (ink point 3.5pl)> Toshiba CE4 nozzle (ink point 5pl)> Ricoh G5 nozzle (ink point 7pl)
2, nozzle life: Toshiba CE4 nozzle (36-60 months)> Ricoh G5 nozzle (9-18 months)> Epson five generation nozzle (2-6 months).

print head3, the price of the nozzle: Ricoh 5 generation nozzle (more than 20,000 RMB)> Toshiba nozzle (more than 10,000 RMB)> Epson fifth generation nozzle (price instability around 6000RMB).
4, nozzle stability: Toshiba CE4 nozzle > Ricoh G5 nozzle > Epson five generation nozzle. 5, printing speed: Toshiba CE4 nozzle > Ricoh G5 nozzle > Epson five generation nozzle.

Customers can decide according to their own comprehensive needs. Epson is a civilian nozzle, Toshiba and Ricoh are industrial nozzles. Toshiba nozzles are currently the most cost-effective in the industry, and they are the most widely selected, which greatly reduces the maintenance costs in the later period.

UV printers

Ricoh print head Gen6-MH5320/5340 will be available soon

The Ricoh Gen6 printheads are available in two models, the MH5320 and 5340 printheads. It is also a print head that Ricoh uv flatbed printer manufacturers pay attention to the market at the end of this year and beyond. This paper analyzes the product composition/positioning, characteristics and time-to-market of the print head.

print head

Ricoh MH5320/5340 print head product composition

Customers can freely choose one color or two colors as needed. The more colors you choose, the lower the speed and accuracy, and the longer and shorter cables.

Product Composition

MH5320 (1 head two colors)
MH5340 (1 head four colors)
MH532020C (length: 195mm)
MH5320 45C (length: 453mm)
When one color is used: 150dpi×4 columns/color→600dpi
When using 2 colors: 150dpi × 2 columns / color → 300dpi
4 colors when used: 150dpi × 1 column / color → 150dpi

Ricoh MH5320/5340 print head product positioning

Injection flow rate = number of printheads × number of orifices × ignition frequency, Gen6-MH5320/5340 print head is mainly for industrial high-speed UV printing.

At present, Ricoh gen print head series has:

Gen6-MH5320/5340
Gen5-5420/5421, MH521MF/F, MH5440/MH5441, MH5220;
Gen4-MH2620/2820, MH2420, GH2220

Ricoh MH5320/5340 printhead three features

(1) High productivity

print headIncreased ignition frequency → increased ink discharge per unit time

MH5420 single-level grayscale printing mode: 30Khz, multi-level grayscale printing mode: 20Khz

MH5320 multi-level printing gray scale: 50Khz in the same resolution mode, saving half of the time

(2) High precision

Support multi-level grayscale printing: Provide an optimized visual experience for different application scenarios

If it is a close shot, select the droplet print;

If it is a distant view, choose large drop printing;

For everyday use, mix large, medium and small droplets.

(3) High ink compatibility

MH5420/5440: UV/solvent

MH5421/5441: Waterborne

Ricoh MH5320/5340 time to market

print headAccept order: April 2019

Bulk supply: Summer 2019

Actually consider the development of the corresponding motherboard program, machine development and debugging, supporting ink, coating, varnish and other links. Conservative points estimate that the time to market will be until the end of December 2019. At this stage, we can adopt a wait-and-see attitude and try to choose again after the second half of next year. At least 1 year Ricoh print headto see if this printhead is suitable.

How to clean the Ricoh print head? Detailed steps, look here!

From the overall structure of Ricoh print head, we can see that it has two filters and two exhaust pipes on a Ricoh print head, and one printhead has two color channels. It is to say, one filter and one exhaust pipe control one color channels. Ok, now, the cleaning procedure begins.

Ricoh printhead cleaning steps:

Step 1: Remove the whole printhead (including filters) from the UV printer and unscrew the plug of one exhaust pipe.
Step 2: Use a syringe to draw cleaning fluid and inject the fluid into the printhead from filter on the same side of the exhaust pipe. The cleaning fluid and ink will flow out from the exhaust pipe opened.
Step 3: Repeat the above operations several times until the liquid flowing out is transparent.
Step 4: Draw a tube a air and inject it into the same filter, and then screw on the lid of the exhaust pipe after the residual liquid is discharge.
Step 5: Draw cleaning liquid and inject it from the same filter, and the cleaning liquid will flow from the nozzles this time.
Step 6: After the liquid that flows from the nozzles becomes transparent, and then inject air the filter to discharge the residual liquid, just like the way we mentioned above.
Step 7: Clean the another print color channel with the same method.
Step 8: After the cleaning is finished, clean the printhead surface with a clean dust-free cloth.

Notice: During the cleaning process, don’t let the cleaning liquid contact with the plug of the nozzle cable.
Printing heads is the most core component of a digital UV printer, a good maintenance of printhead can improve the machine’s use experience, be conducive to the smooth progress of printing business, as well as extend the working life of the print head. Not only for Ricoh print heads, but also for all kinds of other UV printing heads.