Hand-held apparatus with measuring device and printer

摘要

The hand-held apparatus of the present invention includes an integral printer and measuring device so that measurement information obtained from the measuring device may be automatically printed, used to determine additional information to be printed such as price information, or merely displayed. A measuring wheel having detectable marks disposed about the periphery thereof is rotatably mounted on the housing of the apparatus in proximity to a sensor that detects the marks. This sensor is positioned on the housing to not only detect the marks on the measuring wheel but to also detect the presence or absence of a label dispensed from the housing so as to provide an on-demand printing mode of operation. A controller is responsive to the sensor in the on-demand mode of operation for controlling a printhead to print on a supply when the previously printed supply has been removed from the apparatus. The controller is also responsive to the sensor in a second mode of operation for counting the marks that pass the sensor as the measuring wheel is rotated when the apparatus is rolled across a dimension of an object to be measured, such as the length, width or height of the object./!