This research objective is as follows: 1) to the invention of printing ink sathaeng Chase, devices, printers, inkjet type 2) to reduce the duration of the chase of sathaeng laser toner. Types of inkjet 3) to study the Group's satisfaction with the device, you have to use the chase of sathaeng laser toner. Types of inkjet Population and sample 1) population that is used to learn the printer repair technicians. General computer repair shop 2) samples that are used to learn this time, namely, the population used to learn this is the printer repair technicians, amphur Muang, Phitsanulok province.
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