摘要:
A perforation detection device of a contact piece type to be built into a camera. A detection section of a first contact piece arranged on the rear surface side of a path in which the perforations of a film advance in a film feeding stage is constructed of a metal ball which is a separate member from that of the first contact piece. This metal ball comes in pressure contact with a second contact piece arranged on the front surface side of the film as the perforations pass. When the metal ball faces a perforation of the film, this metal ball comes in contact with both the first and the second contact pieces to provide a continuity between the first and second contact pieces, so that the position of the perforation is detected. In the film feeding stage, the metal ball comes in rolling contact with the film surface. The contact pieces have a very small resistance to the film feed, and it is scarcely possible that the film will be injured.
摘要:
In a mechanism for feeding a film, used in a camera, etc., in which a film having one perforation formed at a specified position relative to each frame or a film having a plurality of perforations formed at specified positions relative to each frame with unequal intervals therebetween as a whole is used, a sprocket 13 is employed for controlling to forward the film frame by frame. The sprocket is locked by a lever before an initial forwarding of thefilm is carried out, and it is unlocked from the lever when the film is forwarded to move the lever, so that the relationship of engagement between a tooth of the sprocket and the perforations of the film is ensured to be constant and synchronous during the initial feeding of the film.
摘要:
The present invention provides a composite structure for display device, which includes a display device able to display exercise information and audiovisual entertainment, and the display unit is connected to an exercise equipment by means of a connecting port. Moreover, the display device comprises a control unit, a processor unit and an application interface. The control unit is responsible for adjustment of brightness, contrast, and vertical and horizontal positioning, and the processor unit is responsible for exercise information and adjustment control of audiovisual entertainment. Furthermore, the application interface is connected to the processor unit by means of the connecting port. Hence, the display device including the control unit, the processor unit and the application interface enables an exerciser to achieve the objective of working out to keep fit and enjoying entertainment when exercising on the exercise equipment.
摘要:
A facile synthesis route for preparing SBA-15 silica of platelet shape and very short mesochannels was developed by introducing a small amount of Zr(IV) ions in the first synthesis solution. The synthesis route can be easily extended to prepare SBA-15 materials with various organic functional groups in one pot.
摘要:
A facile synthesis route for preparing SBA-15 silica of platelet shape and very short mesochannels was developed by introducing a small amount of Zr(IV) ions in the first synthesis solution. The synthesis route can be easily extended to prepare SBA-15 materials with various organic functional groups in one pot.