US3775711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Micro film duplicating device
Assignee: Canrad Hanovia Inc
•
Filing: 1972-05-26
•
Granted: 1973-11-27
•
Expires: 1992-05-26
Abstract
Abstract The disclosure is directed to a machine in which a roll of heat sensitive film is drawn across an exposing mechanism which uses a film carrier for holding the negative which is to be copied, the film and negative being held in contact with each other through the use of a pressure differential device. The film is exposed through the use of a mercury vapor lamp, the rays of which are controlled through a shutter surrounding the lamp. A pair of metering rolls moves the film past a cutter which cuts it to the proper length, at which time it is conveyed through a developer and upon emerging from the developer, an air knife cools the film where it is delivered through the use of a conveyor to a collecting station.
Inventors
- 👤 D Burgess
- 👤 C Alexson
- 👤 R Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:23
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/14; G03B27/30; G03B27/306
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
156 words
A microfilm duplicating device including: a. a frame; b. a film exposure mechanism having an exposure area mounted on said frame and including a first light passing surface and a cover member movable with respect to said light passing surface and closing thereagainst; c. film supply means constructed and arranged to deliver film to said exposure mechanism; d. means for delivering selected lengths of film to said exposure mechanism; e. means for selectively moving said cover member with respect to said surface to permit film to be moved therebetween and for positively contacting the film upon closure; f. means for elevating the film above said exposure area when said cover member is lifted to permit film to be moved therepast while not contacting the exposure area; g. a light source mounted to direct exposing light through said light passing surface; and, h. shutter means for controlling the transmission of light to the film to be exposed.
Claim 2
Dependent Claim
156 words
A microfilm duplicating device including: a. a frame; b. a film exposure mechanism having an exposure area mounted on said frame and including a first light passing surface and a cover member movable with respect to said light passing surface and closing thereagainst; c. film supply means constructed and arranged to deliver film to said exposure mechanism; d. means for delivering selected lengths of film to said exposure mechanism; e. means for selectively moving said cover member with respect to said surface to permit film to be moved therebetween and for positively contacting the film upon closure; f. means for elevating the film above said exposure area when said cover member is lifted to permit film to be moved therepast while not contacting the exposure area; g. a light source mounted to direct exposing light through said light passing surface; and, h. shutter means for controlling the transmission of light to the film to be exposed.
Claim 3
Dependent Claim
21 words
The structure set forth in claim 1 and means for supplying vacuum between said light passing surface and said cover member.
Claim 4
Dependent Claim
17 words
The structure set forth in claim 1 and cutoff means for cutting the film after exposure thereof.
Claim 5
Dependent Claim
28 words
The structure set forth in claim 3 and said cutoff means being arranged adjacent said film delivery means to permit cutting of a single length of exposed film.
Claim 6
Dependent Claim
15 words
The structure set forth in claim 1 and said delivering means including metering roller members.
Claim 7
Dependent Claim
17 words
The structure set forth in claim 1 and developer means arranged to receive film after exposure thereof.
Claim 8
Dependent Claim
48 words
The structure set forth in claim 6 and said developer means including: a. heat developing means; b. a housing; c. film conveying means arranged to receive the film and convey the same while holding the same in substantially planar relation whereby film delivered therefrom will be substantially flat.
Claim 9
Dependent Claim
25 words
The structure set forth in claim 7 and cooling means arranged adjacent the outlet of said developer means for immediately cooling the film delivered therefrom.
Claim 10
Dependent Claim
33 words
The structure set forth in claim 6 and conveyor means arranged to receive the film after development thereof, said conveyor being arranged to move the film through light transmitted from said light source.
Claim 11
Dependent Claim
25 words
The structure set forth in claim 6 and film transport means arranged to receive the exposed, cut film and deliVer the same to said developer.
Claim 12
Dependent Claim
30 words
The structure set forth in claim 10 and said film transport means including film driving members spaced along said transport means the spacing therebetween providing continuous movement of the film.
Claim 13
Dependent Claim
73 words
The structure set forth in claim 1 and said cover moving means including; a. a cam follower on said cover; and, b. a cam member with means for driving the same and arranged and constructed to capture said follower and draw the cover into close contact with said surface during a portion of its movement and lifting said cam follower during a portion of its movement thereby shifting said cover from said surface.
Claim 14
Dependent Claim
65 words
The structure set forth in claim 1 and said shutter means including: a. a light transmitting aperture defined in a first light shielding member which member is arranged between said light source and said light passing surface; b. a rotatably mounted shutter device including a pair of spaced light blocking elements defining a light transmitting aperture therebetween; and c. means for oscillating said shutter device.
Claim 15
Dependent Claim
67 words
The structure set forth in claim 13 and said means for oscillating said shutter device including: a. drive means including a source of rotary power; b. eccentrically mounted lever means between said rotary power source and said shutter device whereby said shutter is opened at a first speed, said speed is increased over a second portion of movement and said speed is decreased as said shutter closes.
Claim 16
Dependent Claim
28 words
The structure set forth in claim 1 and control means permitting film delivery only when said cover member is moved from closed position with respect to said surface.
Claim 17
Dependent Claim
19 words
The structure set forth in claim 1 and control means shifting said shutter upon closure of said cover member.
Claim 18
Dependent Claim
163 words
A microfilm duplicating device including: a. a frame; b. a film exposure mechanism having an exposure area mounted on said frame and including a first light passing surface and a cover member movable with respect to said light passing surface and closing thereagainst; c. film supply means constructed and arranged to deliver film to said exposure mechanism; d. means for delivering selected lengths of film to said exposure mechanism; e. means for selectively moving said cover member with respect to said surface to permit film to be moved therebetween and for positively contacting the film upon closure; f. a light source mounted to direct exposing light through said light passing surface; g. shutter means for controlling the transmission of light to the film to be exposed; h. developer means arranged to receive film after exposure thereof; and i. conveyor means arranged to receive the film after development thereof, said conveyor being arranged to move the film through light transmitted from said light source.
Claim 19
Dependent Claim
163 words
A microfilm duplicating device including: a. a frame; b. a film exposure mechanism having an exposure area mounted on said frame and including a first light passing surface and a cover member movable with respect to said light passing surface and closing thereagainst; c. film supply means constructed and arranged to deliver film to said exposure mechanism; d. means for delivering selected lengths of film to said exposure mechanism; e. means for selectively moving said cover member with respect to said surface to permit film to be moved therebetween and for positively contacting the film upon closure; f. a light source mounted to direct exposing light through said light passing surface; g. shutter means for controlling the transmission of light to the film to be exposed; h. developer means arranged to receive film after exposure thereof; and i. conveyor means arranged to receive the film after development thereof, said conveyor being arranged to move the film through light transmitted from said light source.
Claim 20
Dependent Claim
21 words
The structure set forth in claim 17 including means for supplying a pressure differential between said cover member and said frame.
Claim 21
Dependent Claim
17 words
The structure set forth in claim 17 including cutoff means for cutting the film before development thereof.
Claim 22
Dependent Claim
18 words
The structure set forth in claim 19 wherein said cutoff means is disposed adjacent said film exposure mechanism.
Claim 23
Dependent Claim
36 words
The structure set forth in claim 17 including means for elevating the film above said exposure area when said cover member is lifted to permit film to be moved therepast while not contacting the exposure area.
Claim 24
Dependent Claim
49 words
The structure set forth in claim 17 wherein said developer means includes: heat developing means, and film conveying means arranged to receive the film and convey the same adjacent said heat developing means while holding the same in substantially planar relation whereby film delivered therefrom will be substantially flat.
Claim 25
Dependent Claim
25 words
The structure set forth in claim 22 including cooling means arranged adjacent the outlet of said developer means for immediately cooling the film delivered therefrom.
References Cited (Backward Citations)
US1099694A
Cited
US2630743A
Cited
US3320867A
Cited
US3288047A
Cited
US3509807A
Cited
US3583799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |