Dai Nippon Printing Co., Ltd.

Pigeon Corporation

Hidekazu Okuno

Mitsuru Kitamura

Masato Taninaka

Masahiko Fujishiro

Katsushi Tsutsui

Two original images to be recorded are prepared as data (S). A plurality of unit regions, each having an adequate area to record interference fringes of visible light, are defined and positioned on a hologram recording surface (S). A gradation pattern, with which appearance probabilities of two record attributes gradually change in space, is overlapped onto the recording surface, and to each unit region, one of either record attributes is assigned according to the appearance probabilities of the respective record attributes at each individual position (S). In each unit region, to which the first record attribute is assigned, the first original image is recorded as an interference fringe pattern, a diffraction grating pattern, or a scattering structure pattern, and in each unit region, to which the second record attribute is assigned, the second original image is recorded as an interference fringe pattern, a diffraction grating pattern, or a scattering structure pattern (S), and a record pattern is formed on a physical medium (S).

Method for preparing a hologram recording medium

A breast-milk pad can be produced relatively easily, such that it reduces an uncomfortable sensation to the skin surface of a user, and has excellent shape retention properties. A method for producing the breast-milk pad is also disclosed. The breast-milk pad can include a material that is made up by stacking: a back sheet that prevents permeation of liquid; a top sheet that contacts the body; and an absorber that is disposed between the back sheet and the top sheet. The top sheet and the back sheet are bonded to each other in an outer peripheral portion. Cutout portions obtained by cutting the absorber can be formed in positions facing each other at the outer peripheral portion such that cutout width of each of the cutout portions gradually narrows down inwardly. The top sheet and the back sheet can be bonded to each other on the inner side between the cutout portions, and the breast-milk pad can further include bonding portions for bonding inner surfaces of the top sheet together, which are superposed at each of the cutout portions, in a state in which the product is folded up along a folding line connecting the cutout portions facing each other so that the top sheet forms the inner surfaces.

Growing community of inventors

Tokyo, Japan

Hidekazu Okuno