Control method for microfilm image reader

Abstract

A control method of a microfilm image reader is provided for reducing the amount of image data to be transferred from a scanner to a host computer, making the transfer time short and hence lengthening the free time of a bus, reducing the storage capacity needed for storing the image data, and simplifying the operation procedure by omitting the process of eliminating the black frame portion when printed out. The host computer supplies the scanner with a window parameter containing a range of reading area, and the scanner detects only an image area from all the reading area to transfer image data of the detected image area to the host computer together with attribute information containing the size of the image area. The attribute information may be managed by a header system, and data on a print position of the target image may be contained in the attribute information.

Dependencies are inferred from the claim text.