Work slip reading and summing device

A work slip reading and summing device comprising:

• reading head means having
• a first reading head for automatically reading a time base data line on which work contents for a printing machine are recorded according to kinds of work with a time axis by basing on a work graph which is prepared by recording the work contents for said printing machine, and for automatically reading item switching marks recorded on said work slip, and
• a second reading head for automatically reading timing marks which represent said time axis;
• reading mechanism having a processing circuit and a writing head to sum up total periods of time separately according to said kinds of work and said items so as to print out said total periods of time on said work slip by basing on data read by said first and second reading head;
• operation control circuit for summing up total periods of time separately according to said kinds of work and said item;
• operation panel having display means which displays said total time, and placing plate for placing said work slip thereon;
• whereby to automatically read said work time data line recorded on said work slip and to display the total periods of time which are obtained by summing up separately according to the kinds of work and the items so as to print out the result of summing up in a predetermined column of said work slip.