Matsushita Electric Industrial Co., Ltd.

Matsushita Electrical Industrial Co., Ltd.

Hajimu Oonishi

Tadaoki Yamashita

Yukio Sakai

Yukimasa Kuramoto

Yoshiki Hayashi

Robert C Wells

Kenichi Nishiuchi

Masaru Ikedo

A copying apparatus for synthesizing two images on one piece of copying paper. The apparatus includes a photosensitive body having a photosensitive surface, first and second light exposure assemblies disposed in spaced-apart relationship with respect to the path of rotation of the photosensitive surface and an image development assembly. In the first light exposure assembly, a first original positive image source controls light emitted from a first light source which light is transmitted to the photosensitive surface to create a first latent image of the information in the first original positive image source on a first portion of the photosensitive surface. No latent image is formed in the remainder or second portion of the photosensitive surface. In the second light exposure assembly, a second original positive image source controls light from a second light source, which light is transmitted to the photosensitive surface to form on at least a part of the second portion of the photosensitive surface a second latent image of the information in the second positive image source and to change the electric potential of the first portion of the photosensitive surface corresponding to the first latent image to the same electric potential as the second latent image portion. The photosensitive surface then passes the image development assembly in which toner adheres to the portions of the photosensitive surface on which the latent images have been formed but does not adhere to the portion of the photosensitive surface in which no latent image has been formed, thereby making the portion corresponding to the first and second latent images visible. The visible images are thereafter transferred to a piece of copying paper.

Copying apparatus for synthesizing images

A copying apparatus of the electrostatic type enables at least two images to be synthesized on one surface of a copying paper using original positive image sources without preparing negative image sources prior to the copying process. The copying apparatus can also synthesize a plurality of images in different colors on a single sheet of copying paper.

A method of converting a color negative image into an inverted positive color image and an apparatus for carrying out the method. The image of the color negative film is decomposed into three images each in one of the three primary colors through associated color filters. The individual images thus produced are recorded in a light transmissive recording medium in inverted images, which are then illuminated by a light source disposed at a side in opposition to the negative film, whereby the inverted images are projected through the same optical system including the aforementioned color filters as the one used for the projection onto a screen as the inverted positive image. The recording medium is constituted by a light transmissive ceramic dielectric exhibiting a memory function. The inverted positive image may be projected at a magnified scale.

Image converting and projecting method and apparatus for carrying out

A recorded disk preproducing system in which a signal pattern recorded on a master disk is transferred to a reproducing disk positioned in close contact with the master disk upon exposure to flashing light. The master disk includes a thin film of a light screening material such as in organic compound, chalcogen compound, or the like formed on a transparent glass substrate, and an information signal is recorded on the thin film as a pattern of varied light transmission. The reproducing disk has a thin film of a heat sensitive material such as amorphous chalcogen compound formed on a transparent resin substrate, and the optical density and/or a light reflectance of the heat sensitive thin film is varied in accordance with the recorded signal pattern of the master disk upon exposure to the flashing light.

Growing community of inventors

Hirakata, Japan

Hajimu Oonishi