Abstract: A rotation detecting apparatus for use in producing a photo film cassette has an opaque detecting dog device secured in a manner rotatable together with a rotatable inserter. A light source device applies collimated light flux to the detecting dog device. A detection hole is formed through the detecting dog device, for receiving application of the collimated light flux, and passing light through the detection hole when openings at ends thereof are aligned with one another in a direction of the collimated light flux. A photo receptor receives the passed light passed through the detection hole, and outputs a detection signal according to an amount of the received passed light. In the retention, a trailer of photo film is picked up by the inserter. The inserter is rotationally inserted through a passageway of the photo film cassette. The trailer is fastened on a trailer fastener of a spool.

Abstract: A light emitting array unit for emitting line-shaped light is provided. A first light emitting element array includes a first group of plural light emitting elements, for emitting a first train of spotted lights. A second light emitting element array is disposed to extend substantially in parallel with the first light emitting element array, and includes a second group of plural light emitting elements arranged alternately with the plural light emitting elements in the first group, for emitting a second train of spotted lights. A first prism element group receives incidence of the first spotted light train, and emits the first spotted light train in a predetermined direction. A second prism element group receives incidence of the second spotted light train, and emits the second spotted light train in the predetermined direction. The line-shaped light is constituted by the first and second spotted light trains and is emitted.

Abstract: A light emitting array unit for emitting line-shaped light is provided. A first light emitting element array includes a first group of plural light emitting elements, for emitting a first train of spotted lights. A second light emitting element array is disposed to extend substantially in parallel with the first light emitting element array, and includes a second group of plural light emitting elements arranged alternately with the plural light emitting elements in the first group, for emitting a second train of spotted lights. A first prism element group receives incidence of the first spotted light train, and emits the first spotted light train in a predetermined direction. A second prism element group receives incidence of the second spotted light train, and emits the second spotted light train in the predetermined direction. The line-shaped light is constituted by the first and second spotted light trains and is emitted.

Abstract: When a database of a database memory of a server is updated by a distributed data processing process performed by clients on an object to be controlled, a replication trigger generator generates a replication trigger. Based on the replication trigger, an updating information transfer unit transfers updating information to another server. A database updating processor of the server which has received the updating information updates the database stored in the database memory.