Browse Prior Art Database

Typewriter Like Photoprinter

IP.com Disclosure Number: IPCOM000090396D
Original Publication Date: 1969-Apr-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 60K

Publishing Venue

IBM

Related People

Noell, NG: AUTHOR [+2]

Abstract

Typewriter-like photoprinter 10 has a luminous composing strip or belt 11 that is viewable through window 12 in light-tight casing 13. The operator is thus allowed to position a character relative to other characters in a line before printing.

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Typewriter Like Photoprinter

Typewriter-like photoprinter 10 has a luminous composing strip or belt 11 that is viewable through window 12 in light-tight casing 13. The operator is thus allowed to position a character relative to other characters in a line before printing.

Photoprinter 10 includes type font 14 that is variously positioned to present individual characters 15 into alignment with light source 16 and projection lens 17 for projection of a character onto photosensitive film 18 via mirror 19. The latter includes an upper surface 20 that is only partially silvered so as to transmit light to strip 11 as well as reflect light to film 18. Mechanism, not shown, is provided, for normally spacing the strip 11 and film 18 in increments proportional to characters printed.

Keyboard 21 includes a two-position mode selection key 22 that permits selection of either an automatic or a manual mode of operation. In the manual mode, depression of key 23 commences a cycle of operation by withdrawal of clutch latch 24 from single revolution clutch arbor 25 to connect control cam shaft 26 to continuously rotating input shaft 27. Arbor 25 rotates through 180 degrees to a point where it is intercepted by secondary clutch latch 28. During the 180 degrees rotation, type font 14 is positioned to select the desired character and low-intensity lamp 29 of light source 16 is illuminated to project a low intensity image of the selected character onto strip 11. The intensity of illumi...