Abstract: A personal computer (PC) and a programmable controller are used to automatically reposition the turn bars and compensation rollers used in a folder for a web printing press. By providing linear transducers for each of the turn bars and compensation rollers disposed at each level of the folder, analog information as to the actual position of each is provided to the programmable controller. The PC provides digital information to the programmable controller as to the desired position and an error signal is computed for controlling the operation of the drive motors so as to reduce the error signal to zero. When setting up the folder to run a new job, the turn bar settings and compensation roller positions are manually accomplished, but upon command, the settings for that job may be stored in the memory of the PC for use the next time that particular job is to be run.

Abstract: A conventional pocket for delivering signatures in a bindery line is modified by providing a lift plate which is hinged to the leading edge of the pocket's signature support tray. A suitable actuator under control of the system's computer is made to raise and lower that lift plate, depending upon the number of machine cycles which will be executed before that particular pocket will be called upon to deliver a signature to the magazine being assembled. If more than a predetermined number of machine cycles will take place before a signature must be delivered, the actuator lifts the lift plate and, in doing so, elevates the leading edge of the signature stack to the point where the lowermost signature is positioned out of contact with the hopper's separator disc. This prevents unwanted abrasion and marring of signatures.

Abstract: A video imaging technique used in a bagging assembly for magazines, books or the like. The bagging assembly selectively adds onserts and tip-ons to the magazines prior to being bagged in a polybag. The invention includes a method of selectively adding onserts which are contained in a plurality of storage bins by implementing a vision system using a video camera. The vision system defines a plurality of video windows which are used for identifying a dot code pattern which is printed on a mailing label by an ink-jet printer. The dot code pattern identifies which ones of a plurality of storage bins are to be actuated to subsequently dispense an onsert onto the magazine as it passes thereunder. By using a vision system, the dot code pattern can be offset vertically or horizontally, or skewed up to 15 degrees. The vision system creates a pair of video windows used for first sensing reference marks, and three windows for subsequently sensing characters positioned therebetween.