Incremental printing of symbolic information – Ink jet – Controller
Patent
1996-09-30
2000-08-01
Barlow, John
Incremental printing of symbolic information
Ink jet
Controller
347 86, 399 25, B41J 2938, B41J 2175
Patent
active
060974052
ABSTRACT:
A detection apparatus for use in printing devices is disclosed including a container for storing a printing composition, a light source, a light detector, and a light waveguide. The waveguide conducts light from the source to the detector which is configured to enable printing by the device when the light from the source is detected. The detection apparatus may also, or alternatively, be configured to enable printing when either or both the container is coupled to the device in a printing orientation and/or the container with a printing composition having a particular characteristic is coupled to the device. In such configurations, the waveguide fails to conduct light from the source to the detector when the container is not in the printing orientation and/or the container with the particular characteristic is disconnected from the device.
A printing device is also disclosed including a printing mechanism that prints an image, a printing composition, a body in which the printing composition is stored, a control mechanism that enables printing by the printing mechanism, and a circuit that includes a movable waveguide. The waveguide has a conducting position in which the control mechanism enables the printing mechanism and a nonconducting position in which the control mechanism disables the printing mechanism.
A container including a waveguide is additionally disclosed.
Methods are further disclosed that detect if a printing composition supply is coupled to the device in a printing orientation and/or if a printing composition supply having a particular characteristic is coupled to the device.
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Axtell James P.
Lo Clement C.
Anderson Erik A.
Barlow John
Hallacher Craig A.
Hewlett--Packard Company
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