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Method to Overcome Stiction During Receipt Feed

IP.com Disclosure Number: IPCOM000188437D
Original Publication Date: 2009-Oct-07
Included in the Prior Art Database: 2009-Oct-07
Document File: 2 page(s) / 199K

Publishing Venue



Paper deflector for thin receipt paper and polymer film media.

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Method to Overcome Stiction During Receipt Feed

Thin receipt paper and polymer film media tend to stick to almost every surface due to static electricity, even in humid conditions. When the paper sticks to the top of the receipt printer, the paper can back up and cause the printer to jam. A paper path throat deflector takes advantage of the paper ejection out of the printer and overcomes the stiction. Figure 1 shows the deflector in use on a thermal printer.

Figure 2 below shows the disclosure idea described above, with paper force (F) as it is fed out of the paper exit, where the force direction is 'redirected' with the normal force
(N) present with the front 'rib support'. The friction force (f) shown are between the polymer paper and the 'rib support' on printer top cover. As explained above, 'static cling' force is reduced when the surface area that its in contact with is reduced, and the 'rib support' that is added on top of the printer cover does just that, by keeping the polymer paper away from the printer top cover surface, where the friction force seen by the polymer paper as it is being fed out of the printer is less than the original design shown above. With the reduced 'static cling' friction force and improved paper force direction, it reduced/eliminates the chance of the polymer paper getting 'stuck' and piling up and around the p...