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HP 46/81 idler gear
09-05-2022, 03:21 AM
Post: #14
RE: HP 46/81 idler gear
(09-05-2022 01:35 AM)RPZ Wrote:  I don’t think any of the gears were meant to be sacrificial. My guess is that they picked a material for wear and sound. I’m sure they did a bunch of testing but there is no substitute for age. Thinking of the card reader gummy wheel.

The only reason I can think of for sacrificial use is that if the printer driver fails, the carriage can slam against the side of the printer casing and damage the mechanicals and/or the motor. Once a line is printed, the software only waits in a permanent testing loop for the carriage to home, but it does not have any timeout code if the carriage fails to return, so the motor will keep pushing the carriage into the casing. I have no idea if the PIK chip caters for this situation internally. If the motor timing components on the printer driver circuit board fail, this could occur but seems a rare event.

cheers

Tony
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Messages In This Thread
HP 46/81 idler gear - Duane Hess - 09-30-2020, 10:34 PM
RE: HP 46/81 idler gear - RPZ - 09-30-2020, 11:46 PM
RE: HP 46/81 idler gear - RPZ - 10-03-2020, 12:26 AM
RE: HP 46/81 idler gear - Sadsilence - 10-06-2020, 11:24 AM
RE: HP 46/81 idler gear - RPZ - 10-06-2020, 08:32 PM
RE: HP 46/81 idler gear - Sadsilence - 10-07-2020, 06:55 AM
RE: HP 46/81 idler gear - RPZ - 10-07-2020, 03:21 PM
RE: HP 46/81 idler gear - markhen - 10-13-2020, 04:42 PM
RE: HP 46/81 idler gear - Sadsilence - 10-15-2020, 10:15 AM
RE: HP 46/81 idler gear - RPZ - 10-20-2020, 08:37 PM
RE: HP 46/81 idler gear - Duane Hess - 10-28-2020, 09:56 AM
RE: HP 46/81 idler gear - Duane Hess - 10-28-2020, 09:57 AM
RE: HP 46/81 idler gear - RPZ - 09-05-2022, 01:35 AM
RE: HP 46/81 idler gear - teenix - 09-05-2022 03:21 AM
RE: HP 46/81 idler gear - Duane Hess - 09-20-2022, 06:14 AM
RE: HP 46/81 idler gear - RPZ - 09-25-2022, 09:23 PM
RE: HP 46/81 idler gear - Duane Hess - 09-26-2022, 05:23 AM
RE: HP 46/81 idler gear - RPZ - 09-27-2022, 07:21 PM



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