Patent ID: 8210078

Claim:
An apparatus for automatically trimming a plurality of printed products, comprising: a feeding conveyor arranged to grip and feed the printed products successively and continuously to a trimming station, wherein a leading print product of the plurality of printed products is first supplied through the feeding conveyor followed by a second print product of the plurality of printed products; a feeding conveyor drive operative to drive the feeding conveyor; at least one trimming station including a moveable yoke, at least one blade positioned on the moveable yoke, and a trimming transport device arranged to transport the plurality of printed products inside the at least one trimming station to a predetermined position for trimming, wherein the trimming transport device grips each of the plurality of printed products individually from the feeding conveyor, and wherein the trimming transport device has a velocity that matches a velocity of the feeding conveyor during a joint gripping of the respective printed products by the trimming transport device and the feeding conveyor; a yoke drive coupled to and operative to drive the yoke to trim each of the plurality of printed products, wherein the yoke drive is driven separately from the feeding conveyor drive, and wherein the at least one blade moves vertically to trim each of the plurality of printed products; and a control unit coupled to the yoke drive and to the feeding conveyor drive and operative to control the adjustment of the velocity of the feeding conveyor independently of the trimming transport device and the yoke for each of the plurality of printed products during a time window that begins when the leading printed product exits the feeding conveyor and ends when the trimming transport device grips the second printed product, wherein the adjustment is based on a format width of the printed product extending in a conveying direction.