Abstract: A document holder is disclosed including a semi-rigid inner member extending along at least a portion of the length of the holder. A layer of padding material is provided on one side of the inner member and a protective outer layer covers the padding material on the inner member. A suitable arrangement for securing at least one document against the inner member is provided along with a hinge that permits one portion of the holder to be folded over against the inner member in order to protect the document.

Abstract: A still video adapter device is detachably mounted to a back portion of a camera body, in place of a rear cover. The light passing through an objective lens of the camera body is relayed by a relay optical system and split into two groups, one being directed to an image sensor for the still video photography, the other to a light measuring element for the exposure control. The output of the light measuring element is integrated and compared with a given value, thereby generating a signal for interrupting the flash light emission when the integrated value reaches the given value.

Abstract: A magnetic separator comprises a magnet and an iron cylinder rotatable in a gap in the magnet. The cylinder and the lower pole face of the magnet define a separator chamber. An aqueous suspension of magnetizable and non-magnetic particles is supplied to the separator chamber through channels extending through the magnet.