Dai Nippon Printing Co., Ltd.

Dai Nippon Insatsu Kabushiki Kaisha

Katsuyuki Ohshima

Mineo M Yamauchi

Masaki M Kutsukake

Tatsuya Kita

Takeshi Ueno

Jiro Onishi

Mikiko Kudo

Michio Kurata

Miyuki Hakamatsuka

Yoshihisa Ashida

Akiyoshi Sagara

Jitsuhiko Andoh

Tetsuo Irita

Disclosed herein are a thermal transfer printing sheet capable of efficiently transferring images, letters, symbols or the like to both surfaces of an image-receiving material, and a process of double-side transfer printing using the same. The thermal transfer printing sheet comprises a substrate sheet; an area for surface transfer printing, comprising at least a sublimable dye layer composed of sections of one or more colors; and an area for reverse transfer printing, comprising at least a hot-melt ink layer composed of sections of ohe or more colors, the two areas being alternately provided on one surface of the substrate sheet. An image is printed on the surface of an image-receiving material by using the area for surface transfer printing, and another image is printed on the back of the image-receiving material by using the area for reverse transfer printing. Double-side transfer printing can thus be efficiently conducted without leaving unused areas on the thermal transfer printing sheet.

Thermal transfer printing sheet and process of double-side transfer printing

A process for producing a card comprising:

Card and process for producing the same

The present invention provides a process for producing a card comprising:

According to the present invention, a gradation image such as photographs and a non-gradation image read by an image processing means 13 of FIG. 2 are edited and laid out. Based on the data file, a dye receiving layer 21 is formed on a gradation image forming area on a paper mount 26 of FIG. 3 by image generating means 18, and a gradation image 22 is formed by thermal transfer method on said dye receiving layer. A non-gradation image 23 such as character combined with the gradation image is printed before and after the formation of the gradation image. Further, a protective layer 24 is formed on the gradation image 22 or the non-gradation image 23 when necessary, by protective layer transfer means incorporated in the image forming means 18. Thus, a card such as a visiting card 20 with a photograph or a booklet such as a passport can be prepared. The gradation image and the non-gradation image can be transferred on plain paper, and by limiting the receiving layer area to the gradation image area, it is possible to form the images without impairing texture feeling and writability as plain paper. When the image is formed using a thermal transfer image receiving sheet with an arbitrary pattern (such as ground pattern), such pattern forms a background for the image, and this makes it possible to prevent falsification or alteration.

Image forming method, image forming apparatus and image forming member

A plurality of different kinds of information, for example, full-color photographic image information and attribute information such as a name, date of birth, etc., are input by use of a CCD scanner (1a), a camera (1b), a keyboard (1c), a mouse (1d), etc., with coordinate information assigned to each piece of information. The input pieces of information are matched with each other with reference to the coordinate information, and an arrangement of the coordinated information is determined with reference to layout information prepared separately, and then the information is printed out onto a card substrate. Thus, an ID card can be made accurately and efficiently. In addition, forgery prevention processing is applied by simultaneously inputting forgery prevention information and further falsification prevention processing is applied by carrying out emboss processing, thereby enabling an improvement in the security of the ID card. In addition, it is possible to prevent the making of forged cards and the undesired issue of cards which are not conformable to a particular production purpose by adding a special pattern (113) to a blank card (110) and applying print processing thereto after recognizing the special pattern by a card processing machine (112).

Growing community of inventors

Tokyo-To, Japan

Katsuyuki Ohshima