Browse Prior Art Database

Hot Roll Fuser Safety Interlock

IP.com Disclosure Number: IPCOM000088373D
Original Publication Date: 1977-Jun-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Brown, LC: AUTHOR [+2]

Abstract

In this copier the hot roll fuser is slidably supported by one or more rails, such that it can be moved out of the copier for jam clearing, inspection, cleaning and/or repair. The fuser's support rail includes a mechanical safety stop, functioning to limit the extent to which the fuser can be moved out of the copier. This same stop also functions to actuate a copier-enable switch when the fuser has been returned to its operating position within the copier.

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Hot Roll Fuser Safety Interlock

In this copier the hot roll fuser is slidably supported by one or more rails, such that it can be moved out of the copier for jam clearing, inspection, cleaning and/or repair. The fuser's support rail includes a mechanical safety stop, functioning to limit the extent to which the fuser can be moved out of the copier. This same stop also functions to actuate a copier-enable switch when the fuser has been returned to its operating position within the copier.

In Fig. 1, copier 10 is shown with hot roll fuser 11 moved out of the copier, for example, to clear a jam in the area of the fuser rolls 12 and 13. The fuser is supported by at least one rail 14.

Fig. 2 shows the copier's rear and front walls 15 and 16, respectively, as dotted lines. Rail 14 is shown supported by and cooperating with five stationary rollers 17 which are mounted to the copier's frame (not shown) so as to define a horizontal roller surface along which rail 14 slides.

When the fuser is in its extended, inoperative position, as shown in Figs. 1 and 2, a mechanical stop 18, carried by rail 14, engages a stationary portion 19 of the copier's frame, to limit the extent to which the fuser can be extended. Thus, accidental dropping of the fuser is avoided.

When the fuser is returned to its operating position, within the copier, stop 18 engages and actuates fixed-position switch 20. This switch must be actuated in order for the copier to be placed in an operable, ready con...