OID printing requirements(2)

OID printing requirements(2)

2.4 Tolerance of Center alianment of printed OID II Dots

Each complete OID Codes are constructed by a Matrix of Dots with identical size. The orientation of the dots is used to determine the "meaning" of the code. Therefore, locations of Dots MUST be consistent wiht the index film being generated by the Sonix Authorization Tools. The tolerance of the centre alignment should be well controlled within 10um. The best sensitivity can be performed by having Dot's diameter well controlled within 40um to 65um.

2.5 Contrast among the printed OID dots

Refer to Section 1, the ink being used to print Index layer should contain Carbon. The higher carbon level can give better contrast of dot pattern image during capturing.Hence, better sensitivity performance can be achieved. It is worth reminding the importance on controlling the use of INK upon the size&shape of the dots

2.6 Printing Environment

It is highly recommended to monitor the printing environment as cleanness as possible. Contamination of dust will easy distort the sensitivity or even degrade the Hit-Rate(OR increase the Error-Rate) of the OID II system

2.7 Verification on Index layer by using office use laser printer

Index layer of OID II systerm can be verified by office use laser printer which can support printing resolution up to 1200dpi. This function is very useful and essential during development stages. To print the index layer from the laser printer, the printer is required to set to finest resolution. Reading and decoding performance can further be enhanced by increasing the intensity of INK or by ensuring the printer rolling works properly.

2.8 Recommendation of Laser Printer:

MODEL: EPSON EPL2120, HP4000 series or others printer that can support printing resolution of TRUE 1200dpi.