Abstract: A photosensitive material transfer method in a photographic printer machine includes a multiple-row transfer mode in which the photosensitive material pieces are separated into multiple rows and the rows of the photosensitive material pieces are transferred in controlled speeds and an inter-row transfer mode in which other photosensitive material pieces are carried across regions between the multiple rows so as to run in one or more rows. The multiple-row transfer mode and the inter-row transfer mode are selectively effected during the transfer of photosensitive material pieces from an exposure station to a development station.

Abstract: A pulverulent material feeder apparatus includes a bottom plate extending horizontally and inner and outer cylinders disposed on the bottom plate in a coaxial relation. These cylinders define therebeween a material transporting space. A material extruding gap is formed between a lower edge of the inner cylinder and the bottom plate. The apparatus further includes a rotatable annular member connected to a rotatable shaft mounted at the coaxial center by means of spokes so that the annular member is disposed along the inner periphery of the outer cylinder and a gap adjusting cylinder which is disposed along the outer periphery of the inner cylinder and adapted to be adjusted with respect to the vertical position thereof for thereby making it possible to adjust the size of the extruding gap.

Abstract: A humidity detecting resistor porcelain element, with at least one portion of an electrode being made of a resistance heating unit and the electrode serving for the resistance heating unit and humidity detecting element, and a humidity detecting apparatus using the humidity detecting resistor porcelain element. The heating and cleaning operations of the humidity detecting resistor porcelain can be uniformly and efficiently performed, thus ensuring the stable humidity detection. Also, the circuit construction of the humidity detecting apparatus can be simplified. They can be provided for use in the detecting and controlling operations of the various humidities.