Ink jet printing head
Ink jet printing head
Patent Agent: Fitzpatrick Cella Harper & Scinto - New York, NY, US
Patent Inventors: Hiroki Tajima, Minoru Nozawa, Ryoichiro Kurobe
Applicaton #: 20070008379
Class: 347058000 (USPTO)
Disclosed is an ink jet printing head attachable to/detachable from an ink jet printing apparatus, which includes an electric wiring member formed of a TAB tape to which terminals are provided, and which has a wiring exposed through an end section of the electric wiring member, the terminals accepting signals by making contact with a connection portion on the part of the apparatus when the head is attached to the apparatus. An opening is provided to a supporting member which supports the electric wiring member, the opening extending in a direction traversing an area where the electric wiring member is supported. Thereby, movement of liquid, such as water and ink, to the end section is blocked, the liquid moving through a gap between a back surface of the electric wiring member and a surface of the supporting member.
SUMMARY OF THE INVENTION
 The present invention was made by taking the abovementioned issues into consideration, and aims at providing an ink jet printing head with a highly electrical reliability at low cost, by effectively preventing inconveniences entailed in an incident where liquid, such as water drops and ink, comes moving to a portion, in which a conductive member is exposed, of an electric wiring member of the printing head, and the like.
 In an aspect of the present invention, there is provided an ink jet printing head attachable to/detachable from an ink jet printing apparatus, comprising:
 an ejection portion including ink ejection openings, and elements which generate energy for ejecting ink from the ink election openings;
 a tape-formed electric wiring member provided with: external signal connection terminals which make contact with connection terminals of the ink jet print apparatus when the ink jet printing head is attached to the ink jet printing apparatus; terminals connected to the elements; and a wiring for transmitting signals including drive signals for the elements by connecting the terminals and the external signal connection terminals; and
 a supporting member, which supports the ejection portion and the electric wiring member, and which includes an opening extending in a direction traversing across an area where the electric wiring member is supported.
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