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Agitator for Thixotropic Ink

IP.com Disclosure Number: IPCOM000076178D
Original Publication Date: 1972-Jan-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 52K

Publishing Venue

IBM

Related People

Dwyer, JT: AUTHOR

Abstract

Adherence of heavily pigmented inks, like MlCR ink, to a supply roll is improved substantially by a relatively inexpensive multifingered oscillating agitator blade operatively driven from the conventional Carroll press ink lever cam.

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Agitator for Thixotropic Ink

Adherence of heavily pigmented inks, like MlCR ink, to a supply roll is improved substantially by a relatively inexpensive multifingered oscillating agitator blade operatively driven from the conventional Carroll press ink lever cam.

As cam shaft 1 (Fig. 1) rotates, cam 2 through roller follower 3 pivots lever 4 at 5 against the bias of spring 6, to actuate dog 7 to advance ratchet wheel 8 incrementally to rotate ink supply roll 9. As roll 9 rotates partially immersed in a reservoir 10 containing a MICR or other thixotropic ink 11, a conventional adjustable doctor blade 12 wipes the lower surface of roll 9. Ink is intermittently transferred from this wiped surface of roll 9 via an ink transfer roll 13 to inking roll
14. A flexible link 15 connects roll 13 to lever 4 so that cam 2 will periodically carry roll 13 into contact with roll 9.

An agitator blade 16, with depending fingers (Fig. 2) that extend into ink 11, is operatively connected to shaft 17 so as to be oscillated thereby through the medium of a link 18 pivotally connected to lever 4 and to a short link 19 that, in turn, is keyed to shaft 17. Thus, as lever 4 is rocked one way by cam 2 and the other way by return spring 6, it will oscillate shaft 17 and blade 16 through links 18,19. This effectively and inexpensively assures adherence of the ink to ink supply roll 9.

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