Color Imaging Using Variable Dot Thermal Wax Transfer
نویسندگان
چکیده
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than IS&T must be honored. Abstracting with credit is permitted. To copy otherwise , to republish, to post on servers or to redistribute on lists, requires prior specific permission and/or a fee. Abstract Traditionally, thermal transfer printing has been a binary process. This means that for a given location on a page, either a dot of colorant is deposited or is not. Various dithering techniques are used in order to create intermediate tone levels. In comparison, variable dot thermal transfer utilizes colorant dots with a continuum of possible sizes. Consequently, dithering techniques used for traditional fixed dot size thermal transfer printing are not needed. This results in greatly improved image quality. The resolution of variable dot thermal transfer has been shown to be considerably better than ink jet or traditional thermal transfer and comparable to dye diffusion. Furthermore, variable dot thermal transfer has speed, cost and permanence advantages with respect to other color printing technologies.
منابع مشابه
The Color between the Dots
Reflectance models of halftone images, such as the Murray-Davis equation for monochrome and the Neugebauer equations for color, generally are not satisfactory predictors of average reflectance or tristimulus values (TSVs), even when used with the Yule-Nielsen nfactor. CIE colorimetric measurements of halftone dots and the paper between the dots for cyan, magenta, and yellow wax thermal transfer...
متن کاملSpectral reflection and dot surface prediction models for color halftone prints
The proposed new spectral reflection model enhances the classical Clapper-Yule model by taking into account the fact that proportionally more incident light through a given colorant surface is reflected back onto the same colorant surface than onto other colorant surfaces. It comprises a weighted mean between a component specifying the part of the incident light that exits through the same colo...
متن کاملAccelerated Thermal Cycling Test of Microencapsulated Paraffin Wax/Polyaniline Made by Simple Preparation Method for Solar Thermal Energy Storage
Microencapsulated paraffin wax/polyaniline was prepared using a simple in situ polymerization technique, and its performance characteristics were investigated. Weight losses of samples were determined by Thermal Gravimetry Analysis (TGA). The microencapsulated samples with 23% and 49% paraffin showed less decomposition after 330 °C than with higher percentage of paraffin. These samples were the...
متن کاملEffects of heat generation and thermal radiation on steady MHD flow near a stagnation point on a linear stretching sheet in porous medium and presence of variable thermal conductivity and mass transfer
The present paper was aimed to study the effects of variable thermal conductivity and heat generation on the flow of a viscous incompressible electrically conducting fluid in the presence of a uniform transverse magnetic field, thermal radiation, porous medium, mass transfer, and variable free stream near a stagnation point on a non-conducting stretching sheet. Equations of continuity, momentum...
متن کاملSpectral prediction model for variable dot-size printers
By printing a variable number of droplets onto the same pixel location, ink jet printers produce pixels at variable dot-sizes yielding several darkness levels. Varying the number of printed droplets affects the ink volume deposited onto the substrate. In the present contribution, we explore the possibility of producing accurate spectral reflectance predictions at all pixel dot-sizes. For this p...
متن کامل