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THERMAL INK JET PRINTHEAD PRIMING TOOL

IP.com Disclosure Number: IPCOM000027426D
Original Publication Date: 1996-Dec-31
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 120K

Publishing Venue

Xerox Disclosure Journal

Abstract

Proposed is a tool that provides a means for individually priming stubborn jets off-line from the primingkapping station of a TU (Thermal Ink Jet) printing machine. The tool allows for customer-site wand priming of ink jet printheads without an expensive vacuum pump and fluid separator. Additionally, the tool provides a method for automatically aligning a priming tube over the ink jet apertures so that the operation can be

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XEROX DISCLOSURE JOURNAL

THERMAL INK JET PRINTHEAD PRIMING TOOL U. S. C1. 347/001 Mark S. Petrush

Proposed Classification

Int. C1. B41j 02/01

Proposed is a tool that provides a means for individually priming stubborn jets off-line from the primingkapping station of a TU (Thermal Ink Jet) printing machine. The tool allows for customer-site wand priming of ink jet printheads without an expensive vacuum pump and fluid separator. Additionally, the tool provides a method for automatically aligning a priming tube over the ink jet apertures so that the operation can be

XEROX DISCLOSURE JOURNAL - Vol. 21; No. 6 NovemberDecember 1996 355

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THERMAL INK JET PRINTHEAD PRIMING TOOL (CONT'D)

accomplished without special training or technical knowledge of the printhead. As shown in the accompanying Figure, the tool comprises an upper half 10 and a lower half 12 clamshell-type centering guide, an inlet vacuum tube 14, a sliding vacuum shoe assembly 16, and a priming tube 18. The centering guide, which comprises the upper half 10 and lower half 12, may be formed from an injected-molded plastic. The upper half 10 has a plurality of tabs 24 designed to snap into a receiving position and fit tightly in the lower half 12. Alternatively, the upper half 10 may be molded to the lower half 12 via a live hinge. The lower half 12 has at least two snap tabs 20 that allow the tool to be affved to a TIJ printhead in the same manner as the shipping seal retainer thereof. Since snap tabs 20 are difficult to access from under the tool, one skilled in the art will appreciate that one side of the tabs may be molded with a long trigger (not shown) to operate the tabs and to additionally function as a travel limit that avoids part breakage. Both the upper half 10 and lower half 12 have an elongated slot 26 and 28 respectively that are flanked by ways (not shown) to provide a slideway such that the vacuum shoe assembly 16 can traverse the length of the...