Paper Characteristics
There are various types of paper used in the field, and the characteristics of paper impact significantly on the printing defect (running error, image blurring, skipped letters, odors, etc) of the printers and its kinds. To resolve these problems, we provide characteristics evaluation service on various types of paper.
Surface of bond paper and recycled paper
| Bond paper(X100) | Recycled paper(X100) |
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| Bond paper (X500) | Recycled paper (X500) |
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Surface of coated paper and un-coated regular paper
| Coated paper | Un-coated paper |
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Characteristics Evaluation items
| 1 Basic weight 2 Thickness 3 Density 4 Moisture content 5 Tensile 6 Ph value |
7 Friction coefficient 8 Clark stiffness 9 Gurley stiffness 10 Surface resistance 11 Smoothness 12 Fibrous direction |
Paper type and Failure modes
| Bond paper Coated paper OCR Recycled paper Self-adhesive paper Tack paper Pressure-sensitive paper Pre-printed paper |
flip, transcription defect, warpage toner peel-off, flip image blurring stacking defect, dirt in paper powder sensor insufficient transferring, drum contamination, unprinted character folded paper, glue adhesion degradation in paper feeding, odor, coloring flip, odor, shifted printing |
Paper feeding and coefficient of static friction
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General Characteristic | |
| Friction coefficient between natural rubber roller and paper | 1.3 - 1.4 | |
| Friction coefficient between papers (PPC paper) | 0.4 - 0.7 | |
| PPC paper Typical office paper used in electronic copying machine. There are acid paper and alkaline paper, character of each friction is; 
Bending resistance Resisting force against the force of folding the paper. |
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| The higher fiction coefficient between paper or feeding pressure is, the more frequently papers fed in stack (stack feeding).
On the other hand, when the paper has small bending resistance, chance of stack feeding increases regardless the frictional force. |
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Paper Feeding and contributing factor
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The less paper smoothness becomes, the more frequently stack feeding takes place. Beck second The greater Beck second is, the lower smoothness is. |
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The higher moisture content becomes, the less chance of stack feeding takes place. |