Browse Prior Art Database

Media Feed Mechanism

IP.com Disclosure Number: IPCOM000039376D
Original Publication Date: 1987-May-01
Included in the Prior Art Database: 2005-Feb-01
Document File: 2 page(s) / 64K

Publishing Venue

IBM

Related People

Croll, RC: AUTHOR [+2]

Abstract

A device for feeding different size media into an output device from a single paper tray is shown in Fig. 1. As shown in Fig. 1, the cut sheet paper or envelopes 1 are stacked on the input tray 2. Corner buckler tab 3 restrains the media movement in the positive x and y directions. Right media restraint 4 prevents the media from rotating clockwise. The vertical angle 5 of the tray 2 (Image Omitted) should be positive to insure that the media 1 is in contact with restraints 3 and 4. Drive wheel 6 rotates clockwise to feed the media 1 out of the tray 2. The top sheet of the media 1 buckles between the corner buckler 3 and drive roller 6 and subsequently pops over the corner buckler 3. The right restraint 4 stabilizes the media 1 from rotating clockwise as the media 1 is moved in the positive y direction.

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Media Feed Mechanism

A device for feeding different size media into an output device from a single paper tray is shown in Fig. 1. As shown in Fig. 1, the cut sheet paper or envelopes 1 are stacked on the input tray 2. Corner buckler tab 3 restrains the media movement in the positive x and y directions. Right media restraint 4 prevents the media from rotating clockwise. The vertical angle 5 of the tray 2

(Image Omitted)

should be positive to insure that the media 1 is in contact with restraints 3 and 4. Drive wheel 6 rotates clockwise to feed the media 1 out of the tray 2. The top sheet of the media 1 buckles between the corner buckler 3 and drive roller 6 and subsequently pops over the corner buckler 3. The right restraint 4 stabilizes the media 1 from rotating clockwise as the media 1 is moved in the positive y direction. Drive roller 6 drives the media 1 until it contacts the alignment roller 7 which continues to drive the media 1 in the positive y direction. Alignment roller 7 also biases the media 1 to the right alignment surface 8, causing the corner of the media 1 to contact the alignment surface 8. Idler wheel 10 guides the media 1 in conjunction with surface 11. The media 1 rotates counterclockwise and translates in the positive y direction until the media 1 contacts the rear restraint 9.

(Image Omitted)

Alignment roller 7 continues to drive the media 1 into the using system. Figs. 2-5 show an inclined tray design for an improved single corner buckler. Inclined cut sheet paper trays using the single corner buckler technology have a frictional load component which prevents the corner buckler from floating relative to the paper stack. This may result in paper misfeeds due to an excessive load or multiple feeds due to an excessive clearance between the t...