Method for compiling sheets in a bindery process
AssigneeCraftsman Printing Company
InventorJames W. Nail
Life of this patent
Estimating the term…
Abstract
A method for compiling and processing a plurality of differently printed groups of sheets into collated sets is disclosed, and wherein each of the printed sheets has an indicium printed thereon at a predetermined location, and with the predetermined location for the sheets of each group being different from the location of the indicia on the sheets of the other groups. A sheet from each of the groups is sequentially deposited onto predetermined spaced locations of an advancing conveyor to form collated sets, and a sensor is provided for scanning each sheet as it moves to the conveyor to detect whether an indicium is present at the proper predetermined location, and such that the sensor is adapted to identify an improperly collated sheet as well as a missing sheet.
Claims7
A method of compiling a plurality of differently printed groups of sheets into collated sets, and which is characterized by the ability to accurately detect an improperly collated sheet as well as a missing sheet in each collated set, and comprising the steps of
- placing an indicium on each of the printed sheets at a predetermined location thereon, and with the predetermined location on the printed sheets of each group being different from the location of the indicia on the other groups of sheets,
- sequentially conveying a sheet from each of the groups of sheets along a predetermined path of travel and onto predetermined spaced locations of an advancing conveyor means and so as to form a set of overlying collated sheets at each of said spaced locations, and
- scanning each of the sheets during their advance along said path of travel and before being placed on said conveyor to detect whether an indicium is present at the proper predetermined location on each of the sheets, and so as to identify an improperly collated sheet as well as a missing sheet, with said scanning step including directing a light beam toward each sheet, and receiving a portion of the light beams which is reflected from the sheet, and with said directing and receiving steps being conducted while each sheet is at a predetermined location along said path of travel.
Dependencies are inferred from the claim text.