摘要:
A co-winding type thermal transfer sheet is constituted by forming on one surface side of a substrate film a heat-fusible ink layer comprising a pigment and a particulate binder, and causing a tracing paper to be peelably bonded onto the heat-fusible ink layer by the medium of an adhesive layer. The thus constituted co-winding type thermal transfer sheet is capable of providing an original image which can be reproduced by use of a blueprint process so as to provide blueprint images having a high precision and a high contrast.In addition, a co-winding type thermal transfer sheet may also be constituted by forming a heat-fusible ink layer on one surface side of a substrate film and causing a transparent resin sheet to be peelably bonded onto the heat-fusible ink layer by the medium of an adhesive layer containing a cross-linking agent. The thus constituted co-winding type thermal transfer sheet is capable of providing an image excellent in wear resistance on the transparent resin sheet. The transparent resin sheet after the image formation may be used as an OHP (overhead projector) sheet. without contaminating the sheet having no liquid absorbing property.
摘要:
When a temporary adhesive layer for peelably bonding a transfer-receiving material to a thermal transfer sheet comprising a substrate film and a heat-fusible ink layer disposed on one side thereof is caused to comprise a specific adhesive, an excellent composite thermal transfer material is provided. In such a composite thermal transfer sheet, the thermal transfer sheet is firmly bonded to the transfer-receiving material so as not to cause wrinkles or deviation, both of these members may easily be peeled from each other so that the ink layer is exactly transferred to the paper in a transfer region and it is not transferred thereto at all in a non-transfer region, whereby the transfer-receiving material is not contaminated. An antistatic treatment provides a composite thermal transfer sheet causing no trouble due to charging at the time of or after printing operation. When at least one end portion of a sheet-type composite thermal transfer sheet is fixed, there is provided a composite thermal transfer sheet wherein unintended peeling is prevented.
摘要:
A co-winding type thermal transfer sheet is constituted by forming on one surface side of a substrate film a heat-fusible ink layer comprising a pigment and a particulate binder, and causing a tracing paper to be peelably bonded onto the heat-fusible ink layer by the medium of an adhesive layer. The thus constituted co-winding type thermal transfer sheet is capable of providing an original image which can be reproduced by use of a blueprint process so as to provide blueprint images having a high precision and a high contrast.In addition, a co-winding type thermal transfer sheet may also be constituted by forming a heat-fusible ink layer on one surface side of a substrate film and causing a transparent resin sheet to be peelably bonded onto the heat-fusible ink layer by the medium of an adhesive layer containing a cross-linking agent. The thus constituted co-winding type thermal transfer sheet is capable of providing an image excellent in wear resistance on the transparent resin sheet. The transparent resin sheet after the image formation may be used as an OHP (overhead projector) sheet without contaminating the sheet having no liquid absorbing property.
摘要:
A film winding member and a shutter cocking member are movable as a unit until the shutter is cocked, and then the film winding lever moves by itself. The film winding member is stopped when a film position sensing lever senses a hole in the film indicating the frame position. Means are provided to prevent a shutter release member from being moved until the film has been advanced and the film winding member has been returned to its initial position. The film advancing operation and the shutter cocking operation are accomplished with one stroke of the film winding member.
摘要:
A flash emitter is automatically actuated upon releasing the shutter when the brightness of an object to be photographed is below a predetermined level. Upon the flashwise photographing, the diaphragm aperture is also automatically controlled in accordance with the distance between the camera and the object.BACKGROUND OF THE INVENTIONThis invention relates to shutters for photographic cameras with a flash equipment and more particularly it is concerned with a shutter of the type described in which a flash emitter is automatically actuated upon releasing the shutter when the brightness of an object to be photographed is below a predetermined level.SUMMARY OF THE INVENTIONThe present invention has as its object the provision of a shutter for photographic cameras with a flash equipment in which a flash emitter is automatically actuated, upon releasing the shutter, when the brightness of an object to be photographed is below a predetermined level.Another object of the invention is the provision of a shutter for photographic cameras with a flash equipment in which, upon flashwise photographing, the diaphragm aperture is automatically controlled in accordance with the distance between the camera and the object to be photographed.Additional and other objects and features of the invention will become evident from the description set forth hereinafter when considered in conjunction with the accompanying drawings.