EA toner technology and image quality in electrophotography printing

Abstract EN

The main factors that govern the quality of the electrophotography printed image are the small uniform particle sizes of toner transfer to the paper and fixed by heat and pressure with/without oil to give a stable multicolor image and the most problems that the large particle sizes of toner, which gives roughly details of image.

The research utilized an experimental research method.

The purpose of this study was to determine the significant differences that exist in the measurable print attributes (density, dot gain, print contrast, color gamut and ΔE) of conventional & EA (Emulsion Aggregation) toner on different printers.

The experiment was conducted in digital workflow, CMYK color Test target (color chart IT8 7/3) was output by using three digital printers, which all printers are similar on the technology of building image but different on type of toner, 8000 AP printer use Conventional Toner and fusing with oil, 5000AP printer use EA toner with oil and DocuColor 250 printer use EA toner without oil, Only the attributes of density, dot gain, print contrast, color gamut and ΔE were used to compare the two toner technologies, as they were the all attributes that measured patches made up of solid and halftone dots, The findings of this study represent specific printing or testing conditions.

The findings of this research comparing EA toner (with and without oil) with Conventionally toner (with oil) lead to the conclusion that EA toner record high density, loss gain on high light dots and wider color gamut, On the contrary conventional toner record smaller ΔE, higher dot gain, with this findings, Despite EA toner go on better than conventional toner in recording a higher density and more saturation colors, except that the small uniform particle sizes led to loss of the fine details on high light areas which require large uniform particle sizes, or looking for achieving better deposition and fixing high light dots with the small uniform particle sizes of EA toner.