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Temperature Monitored Data Flow Control For Thermal Receipt Printing

IP.com Disclosure Number: IPCOM000198993D
Publication Date: 2010-Aug-20
Document File: 2 page(s) / 28K

Publishing Venue

The IP.com Prior Art Database

Abstract

This inventions is related to a temperature monitored data flow control for thermal receipt printing. More specifically, this inventions involves temperature feedback from the printing device and a data flow regulator in the driver software on the host device.

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Temperature Monitored Data Flow Control For Thermal Receipt Printing

Thermal receipt printing technology has improved tremendously to print large amounts of data quickly, coupled with the improvements in data transfer (USB 2.0,
3.0, etc) enables todays receipt printers to handle printing data never before experienced. However, thermal printing faces the chances of over-heating when the frequency of high-dot-density images are printed on the thermal head. As a safety feature, the printer itself shuts down the printing mechanism when the temperature reaches a given threshold. This is an undesirable behavior in a retail industry when a printer stops printing as it stops the flow of the business process. This invention aims to regulate the data flow to the printer for printing, so as to minimize the frequency of the over-heating safety mechanism from being invoked.

This inventions involves temperature feedback from the printing device and a data flow regulator in the driver software on the host device. When the driver is informed of certain temperature thresholds being reached, it will slow down the data transmission and hence giving the printer time to cool down in between data bursts.

This invention involves an implementation on the printing device end to provide feedback on the current thermal head temperature to the host. The information is packed into the status bytes that is received by the host for interpretation.

Upon receiving the temperature reading, the ho...