US 2009/0153639 A1 · METHOD TO FORM LATENT IMAGE ON OVERCOAT LAYER, VISUALIZING METHOD OF LATENT IMAGE, AND VISUALIZING TOOL EMPLOYED WITH PRINTER DEVICE FORMING LATENT IMAGE AND VISUALIZING METHOD

Abstract

A method of forming a latent image portion on an overcoat layer by a difference in surface brilliance, at the time of layering an overcoat layer on a thermal transfer subject sheet by a heat transfer method, includes the steps of: setting at least two types of applied energy from the thermal head wherein a plurality of thermal elements are arrayed in line form, and layering the overcoat layer on the thermal transfer subject sheet; forming a difference in surface brilliance made up of a region of relatively high degree of brilliance and a region of relatively low degree of brilliance, based on the difference in the applied energy, to form a line pattern with a plurality of lines; and forming the lines by shifting a phase of a line pattern of the latent image portion and the line pattern of a background portion excluding the latent image portion.

Claims14

Dependent claims

A latent image forming method onto an overcoat layer to form a latent image portion on an overcoat layer by a difference in surface brilliance on said overcoat layer, at the time of layering an overcoat layer on a thermal transfer subject sheet by a heat transfer method, said method comprising the steps of:

setting at least two types of applied energy from the thermal head wherein a plurality of thermal elements are arrayed in line form at the time of heat transferring and layering said overcoat layer on said thermal transfer subject sheet;
forming a difference in surface brilliance made up of a region of relatively high degree of brilliance and a region of relatively low degree of brilliance, based on the difference in said applied energy, to form a line pattern with a plurality of lines;
and
forming said lines by shifting a phase of a line pattern of said latent image portion and said line pattern of a background portion excluding said latent image portion at the time of forming said line pattern.

1 more element

A printer device comprising:

thermal transfer subject sheet running means configured to run a thermal transfer subject sheet;
thermal transfer sheet running means configured to run a thermal transfer sheet on which at least an overcoat layer is formed by heat transfer on said thermal transfer subject sheet;
a thermal head whereupon a plurality of thermal elements are arrayed in line form in a direction orthogonal as to the running direction of said thermal transfer subject sheet;
and
control means configured to drive and control said thermal head;
wherein
said control means performs control of applied energy of said thermal head in at least two types, such that,
at the time of performing heat transfer to layer said overcoat layer on said heat transfer subject sheet, a difference in surface brilliance which is made up of a region of relatively high degree of brilliance and a region of relatively low degree of brilliance is formed on said overcoat layer, based on the difference in applied energy as to said overcoat layer of said thermal head,
a line pattern is formed with a plurality of lines, and
at the time of forming said line pattern, said lines are formed by shifting a phase of a line pattern of said latent image portion and said line pattern of a background portion excluding said latent image portion.

7 more elements

Dependencies are inferred from the claim text.

Method to form latent image on overcoat layer, visualizing method of latent image, and visualizing tool employed with printer device forming latent image and visualizing method

Life of this patent

Method to form latent image on overcoat layer, visualizing method of latent image, and visualizing tool employed with printer device forming latent image and visualizing method

Life of this patent

Abstract

Claims14