Browse Prior Art Database

Film Frame Spacing Control for Flow Camera

IP.com Disclosure Number: IPCOM000092121D
Original Publication Date: 1968-Sep-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Gratkowski, F: AUTHOR [+2]

Abstract

This control unit maintains a constant film frame pitch for a flow camera even if the length of the documents to be photographed exceeds that corresponding to a preselected standard frame length. For example, if the standard frame length corresponds to that for an 11'' document, an 8'' x 13'' legal-size document would span two frames without a transverse separation strip between frames and with the unused portion of the second frame being blank.

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Film Frame Spacing Control for Flow Camera

This control unit maintains a constant film frame pitch for a flow camera even if the length of the documents to be photographed exceeds that corresponding to a preselected standard frame length. For example, if the standard frame length corresponds to that for an 11'' document, an 8'' x 13'' legal-size document would span two frames without a transverse separation strip between frames and with the unused portion of the second frame being blank.

As document 1 to be photographed, drawing A, is fed into the nip of feed roll 2 and idler 3, it moves arm 4 of microswitch 5 to activate motor M. The latter rotates feed roll shaft 6, driving 1 and also through pulley-belt drive 7 rotating shaft 8. Cam 9 and feed roll 10 are rotated by 8. As 9 rotates, microswitch arm 11 rides out of detent notch 12 to the high point of cam 9, closing microswitch 13. Roll 10 and idler 14 advance photographic film strip 15 upward past an exposure station not shown. M operates concurrently to advance document 1 and strip 15 preselected, relative distances when either 5 or 13 is closed, since 5 and 13 are connected in parallel as in drawing B. Notches 12 are circumferentially spaced to correspond to a preselected frame length L including a transverse separation strip between adjacent frames for a document 1 of preselected length.

If document 1 is within the preselected length, such document passes 4 and opens 5 at or before 13 opens. M thus stops to...