Hewlett-packard Company

Hewlett-packard Development Company, L.p.

Craig S Huston

Dale R Davis

Bruce E Mortland

Said Zamani-Kord

Kenneth J Knight

Todd R Medin

Peter C Morris

William D Meyer

Carmalyn Lubawy

Steven B Elgee

Glenn T Gentile

Steve Elgee

Mark Flores

A print medium is encoded with information bearing indicia. A transparent layer or substrate which receives the printed information during printing has a first surface, a second surface and a leading edge. A strip of tape is applied to the first surface. A machine readable information bearing indicia is applied to at least one surface of the tape strip. The indicia is formed by a pattern of fluorescent material which upon excitation by radiation of a given spectral excitation range emits radiation in a fluorescent spectral range. The tape reflects radiation in the given excitation spectral range and in the fluorescent spectral range. One type of indicia is a bar code pattern, although other types can also be employed.

Tape indicia on clear film media

A substrate structure encoded with information bearing indicia includes a substrate having a first surface and a second surface. Formed on the first surface is a first information bearing indicia defined by a fluorescent material. A second information bearing indicia is defined by a fluorescent material positioned adjacent to the second surface, the second indicia and the first indicia in an overlapping relationship. The substrate structure includes apparatus for preventing interference between the first indicia and the second indicia during a detection process. The interference preventing apparatus can include reflective or absorptive coatings formed on the first and second surfaces of the substrate, the first and second information bearing indicia positioned on the respective reflective coatings, a thin metal foil layer positioned between the first indicia and the second indicia, or a black background disposed between the first and second indicia.

Techniques to prevent leakage of fluorescing signals through print media or indicia tape

A technique for marking media with indicia in such a way as the media may be loaded into the printer in any orientation. These indicia marks are read by a printer for the purpose of identifying the media, determining the orientation of the media, and providing additional information about the media. The indicia encodes the necessary information for the printer to identify the media as well as additional information about the media that may be useful for the printer. In a typical embodiment, the indicia will be invisible to the human eye but machine readable. On sheets of media, indicia are placed in the margin of the media in eight corners of the page, four on the front and four on the back. The indicia are placed and orientated such that the indicia are in the same relative position and orientation to the printer regardless of the orientation in which the media is loaded into the printer.

Orientation independent indicia for print media

A print medium with encoded data and a print media detection system for use in detecting at least one characteristic of the sheet of print medium based on the encoded data are disclosed. The encoded data is designed to minimize its visual perceptibility. The print media detector is designed to recognize various characteristics of print media based upon the encoded data and transmit information regarding these characteristics to a printing device so that one or more operating parameters of the printing device can be adjusted to help optimize print quality for the particular characteristics of a particular print medium. A printing device including the print medium and print media detection system is also disclosed. A method of detecting one or more characteristics of print media used in a printing device is additionally disclosed. Further characteristics and features of the print medium, print media detection system, printing device, and method are described herein, as are examples of various alternative embodiments.

Print media and method of detecting a characteristic of a substrate of print media used in a printing device

A system and method for controlling image transfer device operations through use of sensed indicia disposed on at least one edge of the image transfer medium. A signal responsive to the sensed indicia is produced and transferred to a control signal. The control signal is recognizable by the image transfer device for controlling print operations, thereby configuring the device for the specific media being utilized. In a preferred embodiment of the invention indicia are placed on the four edges of the media. The indicia can be in the form of a bar code encoding such information as brand, media type, orientation, and size. Preferably the indicia include nonvisible, fluorescing ink.

System and method for controlling an image transfer device

Rolls of printer paper are marked with information which indicates the length of paper remaining on a roll by measuring the distance between indicia successively applied by two separate print drums which each apply indicia at substantially equally spaced first and second intervals, respectively. The length of paper remaining on the roll is determinable by measuring the spacing between indicia applied by each drum. Some of the applied indicia may also be bar-coded with roll length indicia which includes a second means of determining length of paper remaining on a print roll and other information such as paper type, total roll length and name of the manufacturer. The indicia can be applied at speeds of paper travel substantially higher than the fastest known dynamic printing techniques.

Growing community of inventors

Bayside, CA, United States of America

Craig S Huston