JPS58107394A - Thermal transfer recording method - Google Patents

Abstract

PURPOSE:To obtain good stability of recorded pictures at low cost by a method in which the surface of a drum-shaped dielectric material is electrically charged and adhered with toners, an usual paper and a thermal head are orderly bonded with the toner layer, and then they are selectively energized to hot-bond the toners with the usual paper. CONSTITUTION:A dielectric drum is uniformly charged negatively or positively by using a corona charger, e.g., Corotron, etc., and then toners are uniformly adhered to the surface of the dielectric drum by a magnetic brush developer, etc. After this, an usual paper and thermal head are closely contacted with the toners and then the thermal head is partly energized, whereupon the toners in the place corresponding to the energized material are melted and transferred to the usual paper. Then, the charge is removed and the toners not transferred are removed from the drum by a cleaner. By repeating the processes, recording can be made many times.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thermal transfer recording method, particularly to a recording method for forming an image on plain paper using a thermal head.

A recording method using thermal paper is called a heat-sensitive recording method, and a method that generally uses heat-sensitive recording paper.

The thermal recording method involves selectively applying heat to a recording paper called thermal recording paper, which has a thermosensitive coloring layer made of two components that react and develop color when melted on a base paper. This is a method to obtain an image by supplying it and developing heat-sensitive color.

This method uses thermal recording paper as the only consumable and is very easy to maintain, so it is widely applied to printers and facsimile machines. Adhesion of adhesives, etc. containing have shortcomings.

The method is to overlay plain paper on a thermal transfer sheet with a heat-melting ink layer on the base paper, selectively heat the thermal transfer sheet with a thermal head, and transfer the ink from the thermal transfer sheet onto the plain paper to record. It is something.

This type of thermal transfer recording method records by transferring heat-melting ink onto plain paper, so the recorded material has a good shelf life. Additional entries during training etc. can also be made well. However, the thermal transfer recording method has the disadvantage that recording costs are high because it requires the bleed portions of two sheets of thermal transfer sheet and plain paper to obtain one sheet of recorded matter.

The present invention provides a thermal transfer recording method that eliminates such surface defects of the conventional method, uses a thermal head, has good storage stability of recorded materials, and can obtain good recordings at low cost. be.

According to the present invention, the surface of a dielectric material formed into a drum shape is uniformly charged and toner is evenly adhered to the surface, and then plain paper and a thermal head are brought into close contact with the toner in that order. There is obtained a thermal transfer recording method characterized in that an image is obtained by selectively causing a heating element to generate heat to melt and adhere toner to plain paper.

The present invention will be described below with reference to Examples. First, the dielectric drum is uniformly charged positively or negatively using a charging machine called a corotron or scorotron. Next is the magnetic brush current aircraft.

Alternatively, toner is uniformly applied to the surface of the dielectric material using a cascade printing machine or the like. After that, plain paper and a thermal head are brought into close contact with the toner, and when a part of the heating element of the do is heated, the toner at a position corresponding to the heated heating element is melted and transferred to the plain paper. Then, the dielectric drum is neutralized using a corotron or scorotron, and the toner that has not been transferred to the plain paper by the cleaner can be removed from the dielectric drum.

Next, the toner and dielectric drum used in this recording method will be explained. The toner used in this method can be a normal toner used in electrophotography employing a heat fixing method, but it must be non-adhesive to the dielectric drum.

Next is the dielectric material, which is fine as long as it is heat resistant and has a good charge retention property, but it must be non-adhesive to normal heat fixable toner, preferably polyethylene terephthalate or Boria Z toy. have characteristics.

In the above recording process, a vinyl resin toner was used as the toner, and a dielectric drum was made of polyethylene.

According to the present invention, the thermal transfer recording method reduces the cost of recording and has good storage stability.

Claims (1)

[Claims] Formed into a drum shape, the surface of the dielectric material is uniformly charged, toner is applied uniformly, and then plain paper and a thermal head are placed on top of the toner in that order. - A thermal transfer recording method characterized by selectively heating a heating element of a multihead to melt and adhere toner to plain paper to obtain an image quality.