Dai Nippon Insatsu Kabushiki Kaisha

Tsunehiko Imamoto

Satoru Horiguchi

Akio Yanase

The record surface of a work slip on which work contents for a printing machine are recorded with a time axis separately according to the kinds of work, is read, so that the total periods of times are obtained separately according to the kinds of work. The total periods of time are displayed, and printed out.

Work slip reading and summing device

A system in which data for controlling amounts of ink for a number of printing machines, having a variety of printing plates, are measured with one measuring device. This invention provides a printing image area measuring device which can detect a printing image area with high accuracy even if the surface of a printing plate is uneven, which device is simple in construction, low in manufacturing cost and high in measurement accuracy, and which can provide in-line automatic measurement in a printing line.

Offset printing plate printing image area measuring device

A method of detecting the lengths of normal operation time and downtime, and at least approximate causes for downtime, of a printing press during each preassigned period of production time. During the progress of each production period there are derived from the printing press its electrical control signals which are indicative of the printing operation and at least approximate downtime causes. The control signals are sequentially recorded in the form of corresponding, visually identifiable marks. A visual examination of the marking provides the desired data. There is also disclosed herein a recorder of typical construction for recording the signals in the practice of the inventive method.

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Yokohama, Japan

Tsunehiko Imamoto