Patent US3868877A successfully refreshed from Google Patents.
US3868877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film cutting device
Assignee: Canon Inc
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Filing: 1974-02-04
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Granted: 1975-03-04
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Expires: 1994-02-04
Abstract
Abstract An automatic film cutting device is used to cut rolled or strip film off into sheet film having a predetermined length. This film cutting device comprises detecting means for detecting film cutting marks on film to be cut off, film advancing means for advancing the film, and measuring means for measuring the advancement of the film. The measuring means is actuated in response to the output signal from the detecting means, and the film cutting means is actuated in response to the output signal generated by the measuring means when the film to be cut off is fed by a predetermined length, thereby cutting off the film into a predetermined length.
Inventors
- 👤 Akira Shoji
- 👤 Takao Toda
- 👤 Kano Tanaka
- 👤 Takashi Hirashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:05
CPC Classifications
G; G03; G03D; G03D15/00; G03D15/04; G03D15/043; G03D15/046; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4458; Y10T83/446; Y10T83/525; Y10T83/531; Y10T83/541; Y10T83/543
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
130 words
A film cutting device comprising: at least two detecting means for detecting film cutting marks disposed on a film spaced apart by a predetermIned distance, said two detecting means being arranged to be disposed such that when a mark or the projection thereof comes to be located near to one detecting means, the mark or the projection thereof adjacent to said mark or projection comes to be located near to the other detecting means spaced apart by the predetermined distance in the direction of feeding of the film; a film cutting means for cutting film; a control means for operating said cutting means when each of the detecting means generates their respective detecting signals; a feeding means for feeding said film into said detecting means and said film cutting means.
Claim 2
Dependent Claim
130 words
A film cutting device comprising: at least two detecting means for detecting film cutting marks disposed on a film spaced apart by a predetermIned distance, said two detecting means being arranged to be disposed such that when a mark or the projection thereof comes to be located near to one detecting means, the mark or the projection thereof adjacent to said mark or projection comes to be located near to the other detecting means spaced apart by the predetermined distance in the direction of feeding of the film; a film cutting means for cutting film; a control means for operating said cutting means when each of the detecting means generates their respective detecting signals; a feeding means for feeding said film into said detecting means and said film cutting means.
Claim 3
Dependent Claim
32 words
A film cutting device in accordance with claim 1, wherein said detecting means are spaced apart by an equal distance to that of the spacing between the adjacent cutting marks or projections.
Claim 4
Dependent Claim
33 words
A film cutting device in accordance with claim 1, wherein said detecting means are spaced apart by a distance slightly longer than the spacing between the adjacent film cutting marks or projections thereof.
Claim 5
Dependent Claim
32 words
A film cutting device in accordance with claim 1, wherein said detecting means are spaced apart by a distance slightly shorter than the spacing between the adjacent cutting marks or projections thereof.
Claim 6
Dependent Claim
70 words
A film cutting device as set forth in claim 3 wherein said control means includes a timer which is activated for a predetermined time in response to the output signal of one of said at least two detecting means, and said film control means is actuated so as to cut off said film in response to the output signal from the other detecting means while said timer is being activated.
Claim 7
Dependent Claim
75 words
A film cutting device as set forth in claim 3 wherein said film control means includes a timer circuit which is activated for a predetermined time in response to the film cutting operation of said cutting means, and a gate circuit for suppressing the output signals of said at least two detecting means when said timer circuit is being activated, whereby said film cutting means may be kept de-energized when said timer circuit is activated.
Claim 8
Dependent Claim
71 words
A film cutting device as set forth in claim 4 wherein said film control means includes a timer which is activated for a predetermined time in response to the output signal of one of said at least two detecting means, and said film control means is actuated so as to cut off said film in response to the output signal from the other detecting means while said timer is being activated.
Claim 9
Dependent Claim
76 words
A film cutting device as set forth in claim 4 wherein said film control means includes a timer circuit which is activated for a predetermined time in response to the film cutting operation of said film cutting means, and a gate circuit for suppressing the output signals of said at least two detecting means when said timer circuit is being activated, whereby said film cutting means may be kept de-energized when said timer circuit is activated.
Claim 10
Dependent Claim
47 words
Film cutting device in accordance with claim 3, wherein said control means further comprises: a flip-flop connected to one of said detecting means; an AND gate for operating said cutting means when the other detecting means generates a detecting signal after said flip-flop receives a detecting signal.
Claim 11
Dependent Claim
48 words
A film cutting device in accordance with claim 4, wherein said control means further comprises: a flip-flop connected to one of said detecting means; an AND gate for operating said cutting means when the other detecting means generates a detecting signal after said flip-flop receives a detecting signal.
Claim 12
Dependent Claim
67 words
A film cutting device in accordance with claim 3, wherein said control means further comprises: a flip-flop connected to one of said detecting means; a circuit for generating predetermined timing signals when said flip-flop receives a detecting signal; an AND gate for operating a cutting means when the other detecting means generates a detecting signal during the period when a signal is being gEnerated from said circuit.
Claim 13
Dependent Claim
68 words
A film cutting device in accordance with claim 4, wherein said control means further comprises: a flip-flop connected to one of said detecting means; a circuit for generating a predetermined timing signal when said flip-flop receives a detecting signal; an AND gate for operating a cutting means when the other detecting means generates a detecting signal during the period when a signal is being generated from said circuit.
Claim 14
Dependent Claim
67 words
A film cutting device in accordance with claim 3, wherein said control means further comprises: a flip-flop connected to one of said detecting means, a circuit for generating a predetermined timing signal in response to the operation of said cutting means; a gate circuit for intercepting the detecting signal from each of the detecting means during the period when the signal is being generated from said circuit.
Claim 15
Dependent Claim
67 words
A film cutting device in accordance with claim 4, wherein said control means further comprises: a flip-flop connected to one of said detecting means; a circuit for generating a predetermined timing signal in response to the operation of said cutting means; a gate circuit for intercepting a detecting signal from each of the detecting means during the period when the signal is being generated from said circuit.
Claim 16
Dependent Claim
147 words
A sheet material cutting device comprising: a cutting means for cutting sheet material; at least two detecting means for detecting marks disposed on a sheet material marked at predetermined spacing, said detecting means being arranged spaced apart by a slightly shorter distance than that of the spacing between adjacent marks or the projections thereof in the direction of feeding of said sheet material; a signal receiving means to receive a detecting signal of each detecting means for operating said cutting means, said receiving means comprising a signal output circuit for generating a predetermined timing signal when one of the detecting means generates a detecting signal, and said receiving means operating said cutting means when the other detecting means generates a detecting signal while the signal is being generated from said circuit; and a feeding means for feeding said sheet material to said detecting means and cutting means.
Claim 17
Dependent Claim
147 words
A sheet material cutting device comprising: a cutting means for cutting sheet material; at least two detecting means for detecting marks disposed on a sheet material marked at predetermined spacing, said detecting means being arranged spaced apart by a slightly shorter distance than that of the spacing between adjacent marks or the projections thereof in the direction of feeding of said sheet material; a signal receiving means to receive a detecting signal of each detecting means for operating said cutting means, said receiving means comprising a signal output circuit for generating a predetermined timing signal when one of the detecting means generates a detecting signal, and said receiving means operating said cutting means when the other detecting means generates a detecting signal while the signal is being generated from said circuit; and a feeding means for feeding said sheet material to said detecting means and cutting means.
Claim 18
Dependent Claim
147 words
A sheet material cutting device comprising: a cutting means for cutting sheet material; at least two detecting means for detecting marks on the sheet material disposed at predetermined spacing, said detecting means being arranged spaced apart by a slightly longer distance than that of the spacing between adjacent marks or the projections thereof in the direction of feeding of said sheet material; a signal receiving means to receive a detecting signal of each detecting means for operating said cutting means, said receiving means comprising a signal output circuit for generating a predetermined timing signal when one of the detecting means is generating a detecting signal, and said receiving means operating said cutting means when the other detecting means generates a detecting signal while the signal is being generated from said circuit; and a feeding means for feeding said sheet material to said detecting means and cutting means.
Claim 19
Dependent Claim
147 words
A sheet material cutting device comprising: a cutting means for cutting sheet material; at least two detecting means for detecting marks on the sheet material disposed at predetermined spacing, said detecting means being arranged spaced apart by a slightly longer distance than that of the spacing between adjacent marks or the projections thereof in the direction of feeding of said sheet material; a signal receiving means to receive a detecting signal of each detecting means for operating said cutting means, said receiving means comprising a signal output circuit for generating a predetermined timing signal when one of the detecting means is generating a detecting signal, and said receiving means operating said cutting means when the other detecting means generates a detecting signal while the signal is being generated from said circuit; and a feeding means for feeding said sheet material to said detecting means and cutting means.
Claim 20
Dependent Claim
140 words
A sheet material cutting device comprising: a cutting means for cutting sheet material, at least two detecting means for detecting marks on the sheet material disposed at predetermined spacing, said detecting means being arranged spaced apart by a slightly shorter distance than that of the spacing between adjacent marks or the projections thereof in the direction of feeding said sheet material; a signal receiving means to receive a detecting signal of each detecting means for operating said cutting means, said receiving means comprising a signal output circuit for generating a predetermined timing signal in response to the operation of said cutting means, and a gate circuit for intercepting detecting signals from each detecTing means while the output signal is being generated from said circuit; and a feeding means for feeding said sheet material to said detecting means and cutting means.
Claim 21
Dependent Claim
140 words
A sheet material cutting device comprising: a cutting means for cutting sheet material, at least two detecting means for detecting marks on the sheet material disposed at predetermined spacing, said detecting means being arranged spaced apart by a slightly shorter distance than that of the spacing between adjacent marks or the projections thereof in the direction of feeding said sheet material; a signal receiving means to receive a detecting signal of each detecting means for operating said cutting means, said receiving means comprising a signal output circuit for generating a predetermined timing signal in response to the operation of said cutting means, and a gate circuit for intercepting detecting signals from each detecTing means while the output signal is being generated from said circuit; and a feeding means for feeding said sheet material to said detecting means and cutting means.
Claim 22
Dependent Claim
141 words
A sheet material cutting device comprising: a cutting means for cutting sheet material; at least two detecting means for detecting marks on the sheet material marked at predetermined spacing, said detecting means being arranged spaced apart by a slightly longer distance than that of the spacing between adjacent marks or the projections thereof in the direction of feeding said sheet material; a signal receiving means to receive a detecting signal of each detecting means for operating said cutting means, said receiving means further comprising a signal output circuit for generating a predetermined timing signal in response to the operation of said cutting means, and a gate circuit for intercepting the detecting signals from each detecting means while the output signal is being generated from said circuit; and a feeding means for feeding said sheet material to said detecting and cutting means.
Claim 23
Dependent Claim
141 words
A sheet material cutting device comprising: a cutting means for cutting sheet material; at least two detecting means for detecting marks on the sheet material marked at predetermined spacing, said detecting means being arranged spaced apart by a slightly longer distance than that of the spacing between adjacent marks or the projections thereof in the direction of feeding said sheet material; a signal receiving means to receive a detecting signal of each detecting means for operating said cutting means, said receiving means further comprising a signal output circuit for generating a predetermined timing signal in response to the operation of said cutting means, and a gate circuit for intercepting the detecting signals from each detecting means while the output signal is being generated from said circuit; and a feeding means for feeding said sheet material to said detecting and cutting means.
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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |