Zebra Technologies Corporation

Zih Corporation

Midway Manufacturing Corporation

David L Poole

Michael Kenneth Platt

Robert A Ehrhardt

Vincent C Adams

James W Ensinger

Douglas A Fox

Donald V Thielen

Eugene K Brown

Gary F Lynch

Rod DeMay

John Ham

Daniel F Donato

Jeffrey R Kaufman

David A West

William J Hamman

Kenneth V Naegele

Dan E Monnier

Thomas P Zwier

David S Zubriski

Davis S Zubriski

David Laurence George Worgan

Barry R Knott

An example disclosed method includes providing power transmissions from a power storage unit to a power converter of a printing device, the power converter to supply an available amount of power to a print mechanism, the print mechanism having separately controllable print elements; determining a required amount of power for an upcoming print operation that involves energizing the print elements, the print elements including a first group of the print elements and a second group of the print elements; when the required amount of power is less than or equal to the available amount of power, performing the print operation by simultaneously energizing the print elements; and when the required amount of power is greater than the available amount of power, performing the print operation by alternately energizing the first group of the print elements at first times and the second group of the print elements at second times.

Methods and apparatus for supplying power to a printer

Ethernet and Universal Serial Bus (USB) powered printing devices are provided. In particular, Ethernet and USB powered printers and methods of Ethernet powering of printers that support high speed printing and/or data intensive printing. Such high-speed and/or data intensive printing operations are able to be Ethernet or USB powered by providing for a power storage unit within the printer device that is able be charged during non-printing periods and provide for necessary energy bursts to support such higher powered processes. In addition, the present invention provides for devices and methods that allow for printers to operate with main power provided by conventional power mains and for back-up or secondary power to be supplied by Ethernet or USB power. Additionally, the invention provides for Ethernet or USB powering, both primary and back-up, of the data and configuration settings in the printer control and image generating electronics. In the back-up power mode, the Ethernet or USB power insures that data and configurations are not lost during periods of main power outage. The invention also provides a printer and method that can optimize a printing operation, e.g., by adjusting the speed of the printing operation according to the power required for the operation and/or the power available.

Ethernet and USB powered printers and methods for supplying Ethernet and USB power to a printer

Communication port powered printers and methods of powering of printers that support high speed printing and/or data intensive printing are discussed herein. Some embodiments may provide for a power storage unit within the printer device that is able be charged during non-priming periods and provide for necessary energy bursts to support such higher powered processes. Some embodiments may provide for devices and methods that allow for printers to operate with main power provided by conventional power mains and for back-up or secondary power to be supplied by the communication port. Some embodiments may further provide for configuration settings in printer control electronics based on the available power from the communication port.

Ethernet and USB powered printers and methods for supplying ethernet and USB power to a printer

A ribbon cartridge for a thermal transfer printer is configured to provide a retractable feed for a donor ribbon. The ribbon cartridge includes a housing, a roll of donor ribbon wound on a core within the housing, and a clutch operatively coupled to the core. A resilient structure is coupled to the clutch and to the cartridge housing such that the release of energy stored in the resilient structure by advance of the donor ribbon produces retraction of ribbon slack, if the donor ribbon is released or backfed. Alternatively, a ribbon roll having a self-contained clutching and slack take-up capability includes a hollow core configured to receive a roll of ribbon and a clutch having a friction component configured to induce frictional engagement with the core. At least one end of the clutch is adapted to be externally constrained, and a resilient component is located between the friction component and at least one end of the clutch.

Thermal ribbon cartridge or roll with slack ribbon retraction

A thermal printer that includes a thermally conductive sacrificial member disposed between the thermal print head and the web. The sacrificial member is held generally under tension and prevents the web from directly engaging the thermal print head. The sacrificial member may take one of many different forms, including a fixed strip or belt, a rotatable, continuous belt which slowly recirculates during printing to equalize wear across its surface, or a Moebius loop which further provides that wear is equalized across both sides of the belt. By providing a sacrificial member between the print head and web, wear and exposure of the print head is reduced, thereby prolonging the life of the print head.

Thermal printer with sacrificial member

A demand printer has an input structure for receiving command signals related to the operation of the printer; a control circuit coupled to the input structure, and a power supply circuit for processing command signals and generating corresponding control signals for controlling the operation of the printer. A switch circuit line is coupled to at least a first and a second point on the power supply circuit. The switch circuit line provides a first operating voltage for the operation of the printer when connected between the first and second points in the power supply circuit and provides a second operating voltage when the connection between said first and second points is opened by a severing structure. The severing structure projects into a base cavity of the case and is retained therein for maintaining an open circuit between the first and second points on the power supply circuit once said switch circuit line is severed. The severing structure includes a wall of the base cavity which has an control aperture extending therethrough, a severing body having a head end and a severing end wherein the severing end projecting through the control aperture and contacting and severing the switch circuit line; a retaining segment on the severing body operatively associated with the case when the severing body is inserted through the control aperture for retaining the severing body in contact with the switch circuit line to maintain an open circuit between the first and second points.

Ribbon drive system for a thermal demand printer

A demand printer for printing on media includes a ribbon take-up spindle for accumulating spent printing ribbon and facilitating removal of the spent ribbon from the spindle. The spindle has a surface with a protrusion bore formed therethrough. At least one protruding segment extends through the protrusion bore. The protruding segment controllably projects away from the spindle surface for maintaining a space between a portion of the spindle surface and the spent ribbon accumulated on the spindle. A biasing structure is operatively associated with the spindle and the protruding segment for controllably biasedly directing the protruding segment through the protrusion bore in the spindle. A retracting structure is provided for controllably compressing and expanding the biasing means to controllably move the protruding segment through the protrusion bore.

A novel demand printer is used for printing on tickets, tags, pressure sensitive labels and other media. The printer has a spring wrap clutch assembly operatively associated with a media delivery structure for use with a rotating shaft to maintain a constant tension on a ribbon. The spring wrap clutch assembly includes a coiled spring having a leg extending away from one end of the coil, a collar having a bore therein for receiving the coiled spring with the leg extending away from the collar, the rotating shaft extending through the coiled spring and the collar is attachable to the rotating shaft, and a plurality of ramped teeth positioned around the rotating shaft. Each of the ramped teeth has a sloped surface and the leg of the coiled spring controllably engages the ramped teeth.

Ribbon drive for a thermal demand printer

A thermal hand-held printer applicator is disclosed preferably having a roller for gripping the work, a governor for limiting the speed of the roller and thereby the speed of motion of the printer applicator over the work, a tachometer for measuring the roller speed, a print head for printing an image on one of a thermally sensitive web of self adhesive labels, drive means for advancing the web and ejecting one label onto the work, and smoothing means for applying the label to the work.

Hand-held label printer applicator

A thermal demand printer for printing on media is a novel system which includes a case structure including a hinged cover panel, easily removable guide structures and media hanger, and a single central support wall to which the various components are attached. The printer includes a power supply circuit for receiving power from an external source and conditioning it for operation of the printer. An input device is provided for receiving command signals related to the operation of the printer. A control circuit for processing the command signals and generating corresponding control signals for controlling the operation of the printer and a printhead assembly for processing the control signals and generating corresponding control signals for controlling the operation of the printer are mounted in the case structure and coupled to the input device and the power supply circuit. The printhead assembly includes a printhead support structure which controls the printhead. A ribbon take-up spindle, method of operating the take-up spindle using a PMDC motor, and a spring wrap clutch device help to control the tension in the transfer ribbon used in the printer. The printer also includes a medial sensor and a method of sensing media by way of detecting the opacity of the media passing through the sensor. The printer includes a method of printhead control using double data loading and a method of accelerating and decelerating media relative to the printhead using pulse width modulation.

Door structure for a thermal demand printer

Thermal demand printer

A thermal transfer printer includes an arrangement for continuously and automatically varying the rate of advance of the thermal transfer ribbon during printing, the rate of advance being correlated with the nature of the image being printed, and the variable advance rate being provided by a driven friction feed roller and a pair of ribbon guides which cooperate with the friction feed roller and are so positioned that the transfer ribbon is held tightly against the friction feed roller, contacting the circumference of the friction feed roller over more than 90.degree. its circumference and preferably at least 180.degree. of its circumference.

Thermal transfer printer with controlled ribbon feed

The cost and complexity of connecting electrically actuated devices to a game control microprocessor in a coin operated amusement game can be reduced by utilizing a standard control assembly including a memory element for each of the devices and where a control circuit is used to connect the assemblies in series with the microprocessor. Data and clock lines in the control circuit are used to transmit control signals to the devices and the control circuit can additionally include power supply lines and a ground line. A similar arrangement can be used to transport data representing the status of game operated switches to the microprocessor.

Growing community of inventors

Libertyville, IL, United States of America

David L Poole