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Browse Prior Art Database

Lock Mechanism for Printer Drum GAP Seal

IP.com Disclosure Number: IPCOM000084615D
Original Publication Date: 1975-Dec-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Bolan, PS: AUTHOR [+5]

Abstract

A spring loaded lock mechanism for a gap seal on a photoconductor drum provides a constant closing force, which can be easily altered and can accommodate changes in size.

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Lock Mechanism for Printer Drum GAP Seal

A spring loaded lock mechanism for a gap seal on a photoconductor drum provides a constant closing force, which can be easily altered and can accommodate changes in size.

In the figures, a sheathed seal core 1 is mounted in a "T" slot 2 of a holder 3. The holder 3 is moved up to open and down to seal the drum gap by eccentric shaft 4. The shaft raises the seal and holder 3 by bearing directly against the holder 3 at surface 5, but lowers the seal within 180 degrees rotation by pushing against several buttons 6 and springs 7 along the length of the holder 3, and which are retained in the spring mounting box 8 by cover plate 9.

The spring mounting box 8 is held to the bottom of the seal holder 3 by screws 10. This arrangement provides a positive lift, but in the locked position the seal is under spring pressure limiting the maximum applied force and accommodates variations in part size and deflection of the eccentric shaft.

In Fig. 2, shaft 4 is supported in bearings 11, mounted in drum end walls 13. At the front wall 13, shaft 4 is assembled through a mounting plate 12. A spring 16 behind the bearing 11 and a knob 17, pinned to the shaft 4, retain the shaft in place. Pin 18 at the rear of the knob 17 detents into either one of two holes 19 in the plate 12, there being one hole 19 for the locked or closed position and one for the open position.

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