The installation of color laser printer is growing every year. More and
more people use laser printer to print photography with poor printing
quality or paper stuck. What is problem happening when using laser printer
for photographic printing?
Color saturation:
The most critical is color saturation of printing image. Basically, the
color calibration of laser printer is based on common paper (80~100 gsm)
before delivery. If it is more thickness (for example, the paper of
conventional development system is over 180 gsm), the color saturation
will be reduced. How to increase both of paper thickness and color
saturation at same time?
Printing speed:
Slow down printing speed can take more time for toner transfer, avoid
paper stuck and increase color saturation. In the market, there are many
different types such as 4~5 ppm (pages per minute), 16 ppm and over 20
ppm. Fortunately, printing speed is possible to be controlled by selection
icon of paper material. Recommended speed (paper material) is 106~160
gsm.
Paper polarity:
Fortunately, toner is negative polarity of almost laser printers. Looking
for the paper with positive polarity for photographic printing and it is
possible to conduct more negative polarity toner to increase color
saturation.
Moisture:
Moisture tends to make pulp fibre expansion, raising paper thickness and
uneven roughness. Coating skill perhaps is one of solutions. Apply
synthetic paper to replace pulp paper is a good alternative to resist
moisture completely.
Thermal stress:
Many people recommend inkject glossy photo paper or premium paper for
laser photographic printing. Be careful! The heating temperature of fuser
can rise up to 200 degree C during printing. The potential risk of thermal
stress is possible to melt-down the coating material of paper surface or
crack happening. Particular, printing is operating at low speed. Thickness
again! The thickness of those products is over 80~100 gsm.
Resolution:
Due to toner is dry powder in natural, the paper has no connection with
resolution. The image resolution is decided by printer engine, toner
dimension and printing language. 600 x 600 dpi can offer remarkable
picture image quality. 1200 x 1200 and 2400 x 2400 dpi will improve more
grades of gray level and better cubic effect for special application such
as medical or military.
The testing had done with HP CLJ 2500/2550/5500, EPSON Aculaser
900/1900/4000 and Konica Minolta magicolor 23xx. That means it is
compatible to different printer engines for different printing speed, dpi,
toner, fuser temperature and so on. We name it is Laser Printing Photo
Paper.
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