Data recording camera
阅读：79发布：2023-06-16
专利汇可以提供Data recording camera专利检索，专利查询，专利分析的服务。并且A data recording camera for periodically photographing oscilloscope displays, using a self-threading takeup cassette which may be removed without fogging remaining film, and a solenoid-driven pivoted-blade shutter which closes during automatic film advancing. Film is supplied from a supply spool and automatically severed adjacent the cassette by a solenoiddriven knife prior to release of the cassette from the camera. Data is projected from the oscilloscope face onto the emulsion side of the film by a lens system, and a removeable data slide may have the data written on it contact printed onto the rear side of the film by an internal lamp. The film is automatically advanced before and after the data card is projected onto it, and the camera is disabled during operations likely to fog the film. The interlocks also disable the camera when the cassette is not in place, when it is full, when the camera is out of film and when the film supply compartment is open. The electronic control circuit controls the duration of shutter opening, with decade incremental selection of duration, and also boosts shutter opening by applying an initial opening voltage higher than the subsequent holding voltage. Delay circuits allow the shutter to begin closing before the film is moved, and hold the shutter closed to allow time for film movement to be completed.，下面是Data recording camera专利的具体信息内容。
1. A data recording camera, comprising a first light-tight housing having a film exposure gate therein, a supply spindle for holding a supply of film within said housing, a shutter in said housing positioned to interrupt light passing from outside said housing to said gate, a lens system in said housing for imaging data at said film exposure gate, a film advancing mechanism for advancing film from said supply through said gate, a takeup cassette for receiving said film after said film passes through said gate, said cassette comprising a second lighttight housing having a light-tight entrance slot therein, and a takeup spindle journalled within said second housing and engageable from outside said cassette for rotation, said takeup spindle being adapted to grasp the end of said film and automatically roll said film up on said takeup spindle, a film cutoff mechanism in said first housing adjacent said entrance slot of said cassette and operative to sever said film adjacent said entrance slot, and a control circuit for controlling the operation of said shutter, film advancing mechanism and cutoff mechanism in a desired sequence, said control comprising an anti-advance interlock circuit operative to disable said film advancing mechanism, said anti-advance interlock circuit comprising a switch means activated by a movable portion of said camera to complete said anti-advance interlock circuit, whereby film advance will be disabled when said movable portion is moved.
2. A data recording camera is described in claim 1 and wherein said first housing is formed with a recess therein for accepting said takeup cassette, said cassette fitting within said recess to receive film from the interior of said first housing into the interior of said second housing without exposing the film to light, said first housing having an exit slot therein positioned to be juxtaposed with said entrance slot when said cassette is fully inserted into said recess, said camera further comprising a release mechanism operative to retain said cassette in said recess at selected times and to automatically release said cassette from said recess after operation of said film cutoff mechanism.
3. A data recording camera as described in claim 1 and wherein said film advancing mechanism comprising a drive roller disposed adjacent the path of the film through said camera downstream of said gate, an idler roller disposed adjacent the film path opposite said drive roller in confronting relation to the periphery of said drive roller, and a drive mechanism connected to said drive roller for rotating said drive roller to advance the film.
4. A data recording camera as described in claim 3 and wherein said film advancing mechanism further comprises a retraction mechanism connected between said drive roller and said idler roller and operative to move said drive roller and idler roller relative to each other inTo and out of said confronting relation.
5. A data recording camera as described in claim 4 and wherein said drive mechanism comprises a rotary-motion solenoid and said retraction mechanism comprises a linear-motion solenoid.
6. A data recording camera as described in claim 2 and wherein said control circuit further comprises a manual switch means for initiating a sequence of operations leading to ejection of said cassette from said first housing, and a cycling mechanism triggered by said switch and operative to first drive said film advancing mechanism to advance a predetermined length of film through said first housing and into said cassette, and secondly to trigger said film cut-off mechanism after said predetermined length has been advanced into said cassette, said release mechanism operating to release said cassette from said recess in response to the operation of said film cut-off mechanism.
7. A data recording camera as described in claim 6 and wherein said cycling mechanism comprises a drive motor actuated by said manual switch, and having a drive shaft, first and second cam means borne on said drive shaft, and first and second cam-actuated switch means having followers actuated by said first and second cam means respectively, said first switch means being actuated by said first cam means before said second switch means is actuated by said second cam means, said first switch means being connected to said control circuit to trigger operation of said film advancing means, and said second switch means being connected to said control circuit to trigger operation of said film cutoff means.
8. A data recording camera as described in claim 7 and wherein said first cam means actuates said first switch means a plurality of times for each actuation of said manual switch means to advance said film a plurality of frame lengths.
9. A data recording camera as described in claim 1 and wherein said first light-tight housing has a movable door therein giving access to said lens system, said door serving as said movable portion of said camera and said switch being activated by the opening of said door, whereby said film advancing mechanism will be disabled when said door is open.
10. A data recording camera as described in claim 1 and wherein said first light-tight housing has a movable door therein giving access to said supply spindle, said door serving as said movable portion of said camera and said switch means being activated by the opening of said door, whereby said film advancing mechanism will be disabled when said door is open.
11. A data recording camera as described in claim 1 and wherein said first housing is formed with a recess therein for accepting said takeup cassette, said cassette serving as said movable portion of said camera, said switch means being disposed in said recess and being activated by the removal of said cassette, whereby said film advancing mechanism will be disabled when said cassette is removed.
12. A data recording camera as described in claim 1 and wherein said housing is formed with a data receiving slot, and said camera further comprises a data card having a transparent portion insertable through said slot into the interior of said camera adjacent said film exposure gate and a light source within said housing adapted to print the data from said data card onto the film in said exposure gate, said data card serving as said movable portion of said camera and said switch means being activated by the removal of said data card from said housing, whereby said film advancing mechanism will be disabled when said data card is removed.
13. A data recording camera as described in claim 1 and wherein said control circuit comprises a forced-advancement interlock circuit operative to force operation of said film advancing mechanism, said forced advancement circuit comprising a trigger circuit and a switch means activated by a movable portion of said camera to complete said trigger circuit, whereby film advancement will be Forced when said movable portion is moved.
14. A data recording camera as described in claim 13 and wherein said first light-tight housing has a movable door therein giving access to said lens system, said door serving as said movable portion of said camera and said switch means being activated by the closing of said door, whereby said film advancing mechanism will be forced to operate when said door is reclosed.
15. A data recording camera as described in claim 13 and wherein said housing is formed with a data receiving slot, and said camera further comprises a data card having a transparent portion insertable through said slot into the interior of said camera adjacent said film exposure gate and a light source within said housing adapted to print the data from said data card onto the film in said exposure gate, said data card serving as said movable portion of said camera and said switch means being activated by the insertion of said data card into said slot, whereby said film advancing mechanism will be forced to operate when said data card is reinserted into said slot.
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