US4460350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous printed paper stacking device
Assignee: Unisys Corp
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Filing: 1982-11-08
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Granted: 1984-07-17
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Expires: 2002-11-08
Abstract
Abstract Apparatus is disclosed for positioning a continuous paper form having uniformly positioned seams and emanating from a high speed printing device, such as from a high-speed computer printer, in a bin or stacker. Air jets positioned on the stacker are utilized in a mode whereby air bursts from the jets impinge at discrete locations on a top surface of the form as it emanates from the printer. The air bursts cause the continuous paper form to fold naturally in a stacker bin at the paper seams.
Inventors
- 👤 Faquir C. Mittal
- 👤 Joseph M. Curley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:18
CPC Classifications
B; B65; B65H; B65H45/00; B65H45/02; B65H45/06; B65H45/10; B65H45/101; B65H45/1015; B41; B41J; B41J11/00; B41J11/58
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
210 words
Apparatus for folding and stacking a continuous sheet of fold form paper which is provided with periodic seams comprising: (a) means including air jets located on opposite sides of said fold form paper for emitting directional streams of air thereon; (b) means for receiving said continuous sheet of paper after passing said air jets; (c) means for detecting a position of said seams with respect to said air jets; (d) means for activating said air jets for emitting opposed directional streams of air in response to a signal from said means for detecting a position of said seams, whereby synchronization with a passage of said seams opposite said air jets is effected to cause consecutive sheets to fold over one another for forming a uniform stack of paper on said receiver from said continuous sheet of paper; and (e) means for remembering a last actuated one of said air jets, said means including an air jet sensor having solenoids and a plunger selectively moved into one of a pair of opposed openings in said air jet sensor in response to an associated one of said solenoids being energized, said plunger having a flag member operable with a light sensor for blocking a light beam detector carried by said light sensor.
Claim 2
Dependent Claim
210 words
Apparatus for folding and stacking a continuous sheet of fold form paper which is provided with periodic seams comprising: (a) means including air jets located on opposite sides of said fold form paper for emitting directional streams of air thereon; (b) means for receiving said continuous sheet of paper after passing said air jets; (c) means for detecting a position of said seams with respect to said air jets; (d) means for activating said air jets for emitting opposed directional streams of air in response to a signal from said means for detecting a position of said seams, whereby synchronization with a passage of said seams opposite said air jets is effected to cause consecutive sheets to fold over one another for forming a uniform stack of paper on said receiver from said continuous sheet of paper; and (e) means for remembering a last actuated one of said air jets, said means including an air jet sensor having solenoids and a plunger selectively moved into one of a pair of opposed openings in said air jet sensor in response to an associated one of said solenoids being energized, said plunger having a flag member operable with a light sensor for blocking a light beam detector carried by said light sensor.
Claim 3
Dependent Claim
25 words
Apparatus in accordance with claim 1, further including: (a) means coupled to said receiving means for adjusting same in accordance with height of said stack.
Claim 4
Dependent Claim
36 words
Apparatus in accordance with claim 2, wherein said means for adjusting comprises: (a) first and second light detection means for detecting a minimum and maximum height of said paper stack with respect to said air jets.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |