Modified Linear Abraser Device to Measure Image Permanence of Electrophotographic Toner to Coated Paper Substrate
Publication Date: 2004-Dec-23
The IP.com Prior Art Database
This disclosure describes the use of a modified model 5700 Taber Linear Abraser (a commercially available scratch testing device) for measuring the image permanance (fix) of electrophotograhpic prints made on heavy bias weight papers.
Image permanence (toner fix) is determined by the adhesion of toner to substrate achieved during the fusing stage of Electrophotography. Many devices have been used to evaluate this important property. One method is the crease test, which involves creasing the paper using a controlled load and quantifying the toner removed when the crease is re-opened flat. This test is only suitable on uncoated papers up to a paper weight of approximately 160 grams per square meter. For heavier papers, and generally for all coated papers, the crease test is inadequate. In the case of coated papers there is typically a strong interaction from the fold-crack behavior of the coating itself. Furthermore there are many cases where the image permanence failure mode of interest is a scratch test rather than a crease test.
The model 5700 Taber Linear Abraser, a commercially available scratch testing device, has been modified to produce a new device satisfying the following requirements:
· The device generates a signal that correlated well to the results of psychophysical testing and this signal was easily quantified using image analysis.
· The device is suitable for measuring image permanence on color solid images