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Title: Inked paper transport mechanism employing a pair of beveled rollers
Claims: What is claimed is: 1. An inked paper transport mechanism comprising: a. a first pair of beveled drive rollers; and, b. a second pair of drive rollers for driving inked sheets between said first pair of drive rollers and said second pair of drive rollers, said second pair of drive rollers having rounded peripheries biased against the beveled portions of said first pair of drive rollers, said inked sheets having inked portions contacting said rounded peripheries of said second pair of drive rollers. 2. The device as set forth in claim 1 wherein said beveled portions of said first pair of drive rollers are oriented at an angle of between 25.degree. -35.degree. with respect to the longitudinal axis of the support shaft for said first pair of beveled drive rollers. 3. The device as set forth in claim 2 wherein said beveled portions make an angle of about 30.degree. with respect to the longitudinal axis of the support shaft for said first pair of beveled drive rollers. 4. The device as set forth in claim 1 further including a guide arm for rotatably supporting said second pair of drive rollers, together with means for pivotably supporting said guide arm so that said second pair of drive rollers are biased against said first pair of drive rollers by gravity. 5. The device as set forth in claim 2 further including a guide arm for rotatably supporting said second pair of drive rollers together with means for pivotably supporting said guide arm so that said second pair of drive rollers are biased against said first pair of drive rollers by gravity. 6. The device as set forth in claim 5 wherein one portion of said guide arm is coupled to said second pair of drive rollers and a second portion of said guide arm is rotatably coupled to a third pair of drive rollers for driving paper emerging from a printing station toward said first and second pair of drive rollers. 7. The device as set forth in claim 6 further including a paper guide means positioned intermediate said first and second pair of drive rollers on the one hand and said third pair of drive rollers on the other hand. 8. An inked paper transport mechanism comprising: a. a first pair of beveled drive rollers mounted on a beveled roller drive shaft, said drive rollers being beveled at an angle of between 25.degree. and 35.degree. with respect to the longitudinal axis of said beveled roller drive shaft; b. a second pair of drive rollers for driving inked sheets between said first pair of drive rollers and said second pair of drive rollers, said second pair of drive rollers having rounded peripheries biased against the beveled portions of said first pair of drive rollers, said inked sheets having inked portions contacting said rounded peripheries of said second pair of drive rollers; and, c. means for mechanically biasing said first pair of drive rollers and said second pair of drive rollers together at a contact force of about three ounces at each contact portion. 9. The mechanism as set forth in claim 8 wherein said angle is 30.degree.. 10. An inked paper transport mechanism comprising: a. a first pair of beveled drive rollers mounted upon a drive shaft and wherein the bevel angle with respect to the longitudinal axis of said drive shaft is 30.degree., the diameter of the largest portion of each beveled drive roller is about 13/4 inches and the diameter of the smallest portion of each beveled drive roller is about 11/8 inches; b. a second pair of drive rollers for driving inked sheets between said first pair of drive rollers and said second pair of drive rollers, said second pair of drive rollers having rounded peripheries biased against the beveled portions of said first pair of drive rollers and wherein the diameter of said second pair of drive rollers is about 11/8 inches, said inked sheets having inked portions contacting said rounded peripheries of said second pair of drive rollers; and, c. means for mechanically biasing said second pair of drive rollers against said first pair of drive rollers to the extent to produce contacting forces at said rounded peripheries of about three ounces. 11. The mechanism as set forth in claim 10 wherein said biasing forces are produced solely by the force of gravity, acting upon said second pair of drive rollers and the support therefor. Other info: Inventors: Greene, Robert I. (Rochester, NY, US) Madigan, Thomas M. (Pittsford, NY, US) Application Number: 538485 Filing Date: 1975-01-03 Publication_date: 1976-05-04 Assignee: Itek Corporation (Lexington, MA) Primary Class(es): 271/188 101/232, 271/272, 271/307, 400/636 Other Classes: US Patent Ref:
Other Refs: Primary Examiner: Blunk, Evon C. Assistant Examiner: Saifer, Robert Attorney: Blair; Homer O., Nathans; Robert L., Glanzman; Gerald H. |
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