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Side-Loaded Adjustment Eccentric

IP.com Disclosure Number: IPCOM000044477D
Original Publication Date: 1984-Dec-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Whitehead, K: AUTHOR

Abstract

A technique is described whereby a precise adjustment is obtained on the quadrature alignment of the forms emitter used on the IBM 5225 printer. The previous method of adjusting the forms emitter, as shown in Fig. 1, utilized an anchor screw 4 in one side of molded plastic housing 2, and a slotted hole 3. The anchor screw 4 held the emitter to mounting flange 5. A pin 1 installed in the hole 1 had an eccentric lug 6 that protruded into slotted hole 3. Rotating the pin 1, by means of slot 8, would tilt emitter axis 7 relative to the vertical. Tightening hex nut 9 to secure the adjustment would cause movement and the adjustment would be lost. It was necessary to loosen hex nut 9, make the adjustment, and retighten the nut several times in the hope of attaining the correct adjustment.

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Side-Loaded Adjustment Eccentric

A technique is described whereby a precise adjustment is obtained on the quadrature alignment of the forms emitter used on the IBM 5225 printer. The previous method of adjusting the forms emitter, as shown in Fig. 1, utilized an anchor screw 4 in one side of molded plastic housing 2, and a slotted hole 3. The anchor screw 4 held the emitter to mounting flange 5. A pin 1 installed in the hole 1 had an eccentric lug 6 that protruded into slotted hole 3. Rotating the pin 1, by means of slot 8, would tilt emitter axis 7 relative to the vertical. Tightening hex nut 9 to secure the adjustment would cause movement and the adjustment would be lost. It was necessary to loosen hex nut 9, make the adjustment, and retighten the nut several times in the hope of attaining the correct adjustment. The improved technique incorporates a groove in the pin with the eccentric lug 10, as shown in Fig. 2. A spring clip 11, held in place by screw 12, is attached to the edge of mounting flange 5 and provides a side load at groove 14 in order to prevent pin 10 from loosening. The spring clip 11 also locates and holds the pin 10 axially. Pin 10 has a hex end 13 to provide ease of adjustment.

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