Browse Prior Art Database

Coating Device for Re-Inking Printer

IP.com Disclosure Number: IPCOM000046452D
Original Publication Date: 1983-Jul-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 3 page(s) / 47K

Publishing Venue

IBM

Related People

Graham, AE: AUTHOR [+2]

Abstract

This device employs a flat wick, a concentric wick, a heated copper roller, and a heated copper mandrel in a re-inking station in a printer. The ink is melted and its flow is inherently controlled by wicks of aramid fibers or stainless steel, depending upon the viscosity of the ink.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 53% of the total text.

Page 1 of 3

Coating Device for Re-Inking Printer

This device employs a flat wick, a concentric wick, a heated copper roller, and a heated copper mandrel in a re-inking station in a printer. The ink is melted and its flow is inherently controlled by wicks of aramid fibers or stainless steel, depending upon the viscosity of the ink.

The article coated is a printing ribbon, typically a ribbon in a thermal printer, which is used after being recoated by this device at the printer. The materials in such a ribbon are selected to be resistant to heat. The ink preferably may be the normally solid ink described in [*].

Fig. 1 shows a side view of the device, and Fig. 2 a view at 90 to Fig. 1. A cylindrical holder 1 receives an ink stick 3, which is solid at room temperature. The lower end of ink stick 3 rests, by gravity, on wick 7, which has the long dimension of its strands flat or horizontal.

Flat wick 7, in which the strands are predominantly horizontal, is held in place by the stick 3 resting on it and by concentric wick 9 supporting it from the bottom. Concentric wick 9 is supported by a horizontal retaining rod 11 and resistive electrical heater members 13 on each side of wick 9. The long dimension of the strands of concentric wick 9 are predominantly vertical.

The lower end of concentric wick 9 contacts copper roller 15, which is mounted for free rotation. Resistive electrical heater members 17 (Fig. 2) are contiguous to roller 15. A ribbon l9 being re- inked fits between roller 15 and a fixed copper mandrel 21. Mandrel 21 has a circular top configuration. Resistive electrical heater members 23 are centrally mounted within mandrel 21.

A doctoring rod 25 having a doctoring surface 27 is pivoted to the device frame, such as at location 29. The end of rod 25 away from doctoring surface 27 contacts an adjustable cam 31.

The material of wicks 7 and 9 is a felt of NOMEX* aramid fibers, sold under the designation X-848 insulation tape by W. S. Libbey Co., when the ink is the preferred ink of the reference, as that ink is relatively low velocity. For high velocity inks, particularly those with polyamide resins, the material of w...