Porosity check to control hardness, flow of liquid and discharge
Porosity check to control hardness, flow of liquid and discharge
Size fit Inspection on exterior pollution and abrasion status
Characteristics of liquid Inspection on absorption depending on viscosity and surface tension
Inspection on ink flow and consumption From the first writing to the last Inspection on writing quality Inspection on writing performances depending on writing conditions
Chemical resistance Inspection on reactivity depending on solvents Inspection on swelling and shrinkage rate