Moore Business Forms, Inc.

Mark E Ruchalski

Anthony V Moscato

Kevin J Hook

Orrin D Christy

Daniel E Kanfoush

Paul J Paroff

Daniel Charles Radice

Roger J Rowland

Kenneth C Chapin

Michael D Akins

David Hargreaves

Phillip C Jerzak

A modular ink delivery system using ink jet heads effectively supplies ink to a multi-level array of ink jet heads, and ensures that the heads remain in position during printing even if there is vibration of the supporting structures. Delivery is provided by a number of ink containing chambers, at least one for each level and stacked one atop the other. A connection extends from each chamber to at least one ink jet, and ink is automatically supplied to all of the chambers for example by pumping ink to the upper of the chambers, the ink then cascading downwardly from each upper chamber to a lower chamber through standpipe connections between them. The heads are positively held in place by a first circular bar and a second non-circular bar, which bars are operatively engaged by a mounting block for each head for guided movement. A tightenable screw and spring plunger may cooperate with an arcuate bushing for engaging the first bar, and a channel on a releasable clip and rollers on a portion of the mounting block may engage the second bar.

Modular ink mounting assembly and ink delivery system

Charged toner is transferred from an image member (such as an image cylinder or belt) to a web of imagable material (typically paper), preferably utilizing a rotating conductive impression cylinder. The toner, having a first polarity, is applied to the image member. The paper web, typically by contact with the impression cylinder, is moved into contact with the image member so that the toner transfers from the image member to the web under pressure. Even despite a high speed of movement of the web (e.g. 200 feet per minute or more), toner back scatter is substantially prevented by applying an electrical bias of the first polarity to the impression cylinder so as to impose an electric force field on the toner particles of sufficient intensity to overcome aerodynamic drag forces which would separate particles from the image areas between the impression cylinder and the image member. While the applied potential is typically between about 100-600 volts, in order to take care of all speeds and all types of toners and all types of printer geometries, a fixed potential of about 750 volts may be utilized. Where the image member is an image cylinder, a nip is provided between the cylinders at which, or immediately adjacent to, toner transfer takes place.

Trailing edge dust control

Growing community of inventors

West Seneca, NY, United States of America

Mark E Ruchalski