Datamax-o'neil Corporation

Hand Held Products, Inc.

Datamax Corporation

Ronald Schwallie

Jose Fernando Sanchez Gutierrez

H Sprague Ackley

Thomas Axel Jonas Celinder

Richard Hatle

Kenneth Colonel

George Vazac

Jose Sanchez

A method for evaluating a print quality of a printed document that is printed by a printer is provided. The printer comprises a pre-print image scanner, a post-print image scanner, and a printhead disposed between the pre-print image scanner and the post-print image scanner. The method comprises generating a pre-printing image of a print media, generating the printed document, generating a post-printing image of the printed document, generating a validation image by comparing the post-printing image with the pre-printing image, and comparing the validation image with the source image.

Methods, apparatuses, and systems captures image of pre-printed print media information for generating validation image by comparing post-printed image with pre-printed image and improving print quality

Methods, apparatuses, and systems for scanning pre-printed print media to verify printed image and improving print quality

Methods, apparatuses, and systems for verifying printed image and improving print quality

The disclosed embodiments illustrate a thermal printer apparatus that includes a media sensor. The sensor generates an input signal indicative of a measure of a media transmissivity/reflectivity. Further, the thermal printer includes a processor that is configured to receive the input signal from the sensor, while the media is stationary with respect to a print head. The processor further determines one or more characteristics of the input signal. Thereafter, a first transmissivity/reflectivity threshold is determined based on the one or more characteristics in the input signal. Further, the processor receives the input signal from the sensor, while the media traverses with respect to the print head. Subsequently, the processor determines one or more current characteristics of the input signal while the media traverses with respect to the print head. A media jam condition is detected based on the one or more current characteristics and the first transmissivity/reflectivity threshold.

Methods, systems, and apparatuses for detecting a media jam condition

An apparatus and method for automatically calibrating a media sensor configured to detect advancing print media in a printing device. In some embodiments, the apparatus selects a first light intensity level and a second light intensity level greater than the first light intensity level. A light source unit, such as a light emitting diode or laser diode is activated to emit light at the second light intensity level. The light passes though print media, for example, a roll of self-adhesive labels, that is advanced along a print path of the printing device. The amount of light transmitted through the print media is measured as the print media advances. If the measured lightincreasesdecreases, the light source unit is reactivated to emit light at the first light intensity level. In some embodiments, the apparatus identifies whether print media has changed or an out-of-stock condition exists.

Media detection apparatus and method

An apparatus and method for automatically calibrating a media sensor configured to detect advancing print media in a printing device. In some embodiments, the apparatus selects a first light intensity level and a second light intensity level greater than the first light intensity level. A light source unit, such as a light emitting diode or laser diode is activated to emit light at the second light intensity level. The light passes though print media, for example, a roll of self-adhesive labels, that is advanced along a print path of the printing device. The amount of light transmitted through the print media is measured as the print media advances. If the measured light increases, the light source unit is reactivated to emit light at the first light intensity level. In some embodiments, the apparatus identifies whether print media has changed or an out-of-stock condition exists.

A thermal transfer print head is disclosed. The print head includes a housing configured and dimensioned to be installable within the printer, a plurality of resistive heating elements positioned on an external surface of the housing and in thermal contact with a printable media, the resistive heating elements receive electrical energy from the printer and have adjustable thermal output, and a print head memory positioned within the housing and accessible by the thermal printer, the print head memory including a first and second memory regions, the first memory region configured to store a printing profile pertaining to operating parameters of the resistive heating elements and the second memory configured to store usage data pertaining to operation of the print head.

Growing community of inventors

Lake Mary, FL, United States of America

Ronald Schwallie