Eastman-kodak Company

Heidelberger Druckmaschinen Ag

Thomas K Sciurba

Michael Thomas Dobbertin

James D Allen

Alan Earl Rapkin

James A Zimmer, Jr

Tomas Roztocil

Peter R Connelie

A method of synchronizing the timing of a plurality of physically coupled print engines wherein the receiving sheet is inverted between a first and a second print engine including determining any change in the speed of the master print engine relative to the speed at original set up and adjusting the timing parameters within the slave print engines based on the speed of the master engine.

Print engine speed compensation

The present invention relates to a method for providing paper stack level calibration in a reproduction apparatus. According to various aspects of the invention, methods are provided for continuous feeding with a transition from one supply to another, and leaving a controlled number of sheets in the prior supply.

Method for controlling stack-advancing in a reproduction apparatus

In the present invention an image-forming production system includes a marking engine. The marking engine outputs a plurality of printed sheets at a first speed. An inserter is connected to receive the plurality of printed sheets from the marking engine and insert an insert sheet fed at a second speed. The inserter control board transmits synch pulse signals to an inserter speed adjust unit controller when a plurality of sheets approach the inserter speed adjust unit. The inserter speed adjust unit transmits a signal to the inserter speed adjust unit controller indicating an arrival of each of the plurality of sheets. The inserter speed adjust unit controller compares the measured arrival time with the synch pulse signal to adjust a speed of the plurality of sheets and the insert sheet to a third output speed.

Post processor inserter speed and timing adjust unit

A system and method for providing the ability to more effectively control a paper stack in a reproduction apparatus. The level control behavior of the paper stack is characterized, and accordingly, additional lift commands are signaled when the behavior indicates that such increments are necessary. The behavior is characterized by sampling data during a sampling period including switch initiated increments. Upon characterization, additional increments are initiated by a source other than the switch initiated increments to more effectively control the paper stack.

Method and system for providing sheet stack level control

An image-production system includes a marking engine. The image-forming production system may also include an inserter. The marking engine includes a marking engine controller, a speed adjust system and a registration system. The registration system aligns sheets going to an imaging unit. The speed adjust system controller includes a speed adjust system controller. When at least one sheet approaches the speed adjust system, the marking engine controller transmits a synch pulse signal to the speed adjust system controller. The speed adjust system transmits a signal to the speed adjust system controller of the arrival time of the at least one sheet. The speed adjust system compares the measured arrival time with the synch pulse signal to adjust a speed and timing of the sheet before the sheet is transferred to the registration system.

Apparatus for a pre-registration speed and timing adjust system

A method of operating a vacuum corrugated belt feeder, which may or may not have a positive air pressure separator, during non-feed cycle time. &ldquo;The result being&rdquo; to separate a sheet from a sheet supply stack, which method comprises agitating the top sheets in the stack by actuating the vacuum and/or the positive air pressure separator during non-feed cycle time.

Airknife and vacuum control changes to improve sheet acquisition for a vacuum corrugated feed supply

A reproduction apparatus includes a communication interface having an RS-232 interface and a modem, thereby permitting both on-site and remote communication with a diagnostic and administrative device. The RS-232 interface and modem enable the use of standard hardware and non-dedicated telephone lines for the purpose of recording apparatus usage, feature utilization, and performing diagnostic routines on the reproduction apparatus.

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Webster, NY, United States of America

Thomas K Sciurba