Abstract: The pattern printed sheet 1 of the present invention includes a substrate 2 and a non-visible light-reflective transparent pattern 3 printed on a surface of the substrate, wherein an ink for forming the transparent pattern 3 contains a non-visible light-reflective material capable of selectively reflecting a light having a wavelength in a non-visible light range, and the transparent pattern 3 printed on the surface of the substrate 2 has a multilayer structure in section which is repeated at predetermined intervals as observed by a scanning electron microscope, and reflects only a circular polarization component in a predetermined rotation direction relative to an incident light applied thereto.

Abstract: The pattern printed sheet 1 of the present invention includes a substrate 2 and a non-visible light-reflective transparent pattern 3 printed on a surface of the substrate, wherein an ink for forming the transparent pattern 3 contains a non-visible light-reflective material capable of selectively reflecting a light having a wavelength in a non-visible light range, and the transparent pattern 3 printed on the surface of the substrate 2 has a multilayer structure in section which is repeated at predetermined intervals as observed by a scanning electron microscope, and reflects only a circular polarization component in a predetermined rotation direction relative to an incident light applied thereto.

Abstract: An electro-developing recording medium has a reference zone exhibiting a substantially-constant transparency to prepare correction data for correcting image pixel signals obtained by an optical and electronic reading of a developed image of the electro-developing recording medium. The reference zone is located at a margin area of an image recording area of the electro-developing recording medium. Further, the reference zone is located adjacent to a side edge of the image recording area of the electro-developing recording medium. The electro-developing recording medium includes an electrostatic information recording medium and an electric charge keeping medium. The electric charge keeping medium has the reference zone exhibiting the substantially-constant transparency. The electric charge keeping medium is formed as a liquid crystal display, and the reference zone can be defined as an empty space from which a portion of a liquid crystal of the liquid crystal display has been eliminated.

Abstract: According to the invention wherein leading electrodes of the respective electrode layers of an integrated type of information recording medium are bundled up on the same side, and a flexible printed board having electrodes corresponding to the respective leading electrodes and a interconnecting pattern printed thereon is superposed on the integrated type of information recording medium to lead electrodes out thereof, and wherein an integrated type of information recording medium is encased in a case formed by an upper lid provided with an image exposure window, etc., and a lower lid, electrodes can be assuredly led out of the integrated type medium, and the integrated type medium can be protected and mass produced.

Abstract: A photographing operation control device having an electro-developing recording medium to electronically develop an image formed thereon. The developing or photographing operation of the electro-developing recording medium is performed during a period when a recording medium activating signal is outputted. An exposure period for which the electro-developing recording medium is exposed is set based on a measured photometry value. When the exposure period is longer than a standard period for which the recording medium activating signal is outputted, the recording signal activating signal is outputted as pulse signals for a period equal to the exposure period. The operation period for which the pulse signals are outputted is set in such a manner that a total amount of the output period of the recording medium activating signal is equal to the standard period.

Abstract: An image reader to optically and electronically read a developed image of an electro-developing recording medium, where the electro-developing recording medium has a reference zone exhibiting a substantially-constant transparency. An optical sensor senses light rays passing through the reference zone, and converts the sensed light rays into optical data. Correction data is prepared based on the optical data. Image data is read from the developed image of the electro-developing recording medium according to the correction data. The correction data is updated whenever the image data is read from the developed image of the electro-developing recording medium. The electro-developing recording medium includes an electrostatic information recording medium and an electric charge keeping medium, and the electric charge keeping medium has a reference zone exhibiting a constant transparency.

Abstract: An electro-developing type camera uses an electro-developing recording medium including an electrostatic information recording medium and an electric charge keeping medium. The camera has a transparency sensor for detecting dark-zone-transparency data at a portion of the electric charge keeping medium corresponding to a dark zone defined on a light receiving surface of the electrostatic information recording medium. It is determined whether or not the dark-zone-transparency data is substantially equal to reference-transparency data. If the dark-zone-transparency data is not substantially equal to the reference-transparency data, it is warned that the electro-developing recording medium has been recorded on.

Abstract: A developing operation control device using an electro-developing recording medium on which an image is developed while an electric voltage is applied thereto. With starting the voltage application to the electro-developing medium, a voltage applied to a liquid crystal display included in the electro-developing recording medium is increased. When a predetermined time has passed since the voltage application to the electro-developing recording medium is started, an exposure onto the electro-developing recording medium is started. By starting the exposure, a bright portion occurs on the electro-developing recording medium, and the voltage applied to the bright portion of the liquid crystal display is quickly raised in comparison with a dark portion. The voltage application to the electro-developing recording medium is stopped at a predetermined timing.

Abstract: A holder assembly includes at least two holder members for holding electro-developing recording media, respectively, and a connecting member for connecting the holder members to each other through the intermediary thereof, and each of the holder members is hinged to the connecting member. An electro-developing type camera includes a photographing lens system for focusing a light beam derived from an object, and an optical separator for separating the light beam, passing through the photographing lens system, into at least two light beam components. The photographing lens system and the optical separator are constituted and arranged such that the light beam components are focused on different image planes, respectively. The holder assembly is shaped and positioned such that the electro-developing recording media are included in the different image planes, respectively.

Abstract: A packaged integrated information recording system has a plurality of information recording media radially arranged on a disk substrate. Each of the recording media comprises a liquid crystal recording medium including a liquid crystal-polymer composite layer with polymer balls filled in a liquid-crystal phase, stacked on a first electrode layer and a photoelectric sensor including a second electrode layer and a photoconductive layer formed on a transparent substrate. The liquid crystal recording medium and photoelectric sensor are stacked directly, or through an interlayer on each other while the liquid crystal recording layer and photoconductive layer are opposed to each other. The recording media may also be arranged in a row on a film substrate provided with feed holes on both side edges and received in a closable case such that it can be drawn. Alternatively, the recording media on a film substrate may be received in a packaging case having a window openable and closable by a shutter to unroll the film.