GB946217A - Improvements in thermoprinting apparatus and method - Google Patents

Improvements in thermoprinting apparatus and method

Info

Publication number
GB946217A
GB946217A GB25867/63A GB2586763A GB946217A GB 946217 A GB946217 A GB 946217A GB 25867/63 A GB25867/63 A GB 25867/63A GB 2586763 A GB2586763 A GB 2586763A GB 946217 A GB946217 A GB 946217A
Authority
GB
United Kingdom
Prior art keywords
lamp
capacitor
assembly
relay
switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB25867/63A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of GB946217A publication Critical patent/GB946217A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/02—Exposure apparatus for contact printing
    • G03B27/14—Details
    • G03B27/30—Details adapted to be combined with processing apparatus
    • G03B27/306—Heat development
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/145—Infrared

Abstract

946,217. Control systems for space discharge apparatus. MINNESOTA MINING & MANUFACTURING CO. Oct. 20, 1959 [Oct. 20, 1958], No. 25867/63. Divided out of 946,216. Heading H2H. [Also in Division H1] In a thermographic contact copying apparatus a flash lamp 35 having electrodes at opposite ends of an elongated portion of the lamp envelope filled with a noble gas such as xenon at a pressure of from 500 to 760 mm. Hg and the bore of the elongated portion being not more than 2 mm., and having a trigger electrode 42 mounted parallel to but separate from the narrow bore portion, is supplied from a storage capacitor 84 charged by a half-wave rectifier unit. To ensure that the rate of feed of the assembly of original and copy paper past the lamp is so related to the frequency of the radiation pulses from the lamp that the assembly is uniformly irradiated, a double cam 60 geared to a roller which feeds the assembly through the machine controls the time at which charging of the capacitor 84 starts and the time at which the trigger electrode 42 is energized from the capacitor 88. The main switch 75 having been closed to energize the machine drive motor 46, the entry of an assembly of original and copy paper into the machine closes a switch 74 which energizes a time delay relay 102 which in turn releases a latch 66 on the shaft of the cam 60 and energizes a relay 107 completing the primary of the transformer 77. The purpose of relay 102 is to ensure a further flashing of the lamp after the original and copy paper have allowed the switch 74 to open. When this has occurred the cam 60 is held by its latch 66 in the position shown so that both capacitors 84, 88 are held discharged. If a power failure occurs a switch 94 normally held open by a relay 93 closes to discharge the capacitor 84 through resistor 92 and interlock switches 111 have the same effect if the machine cover is opened, while opening of the main switch 75 has the same effect also. In order to maintain the lamp output constant in spite of mains fluctuations, the voltage across the capacitor 84 is kept constant by a voltage divider pick-off circuit 112 which by co-operation with a constant reference voltage &c. via transistor amplifiers 119, 121 alters the impedance of a winding 132 in the charging circuit. The description is identical with that of Specification 946,216.
GB25867/63A 1958-10-20 1959-10-20 Improvements in thermoprinting apparatus and method Expired GB946217A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US768328A US3056904A (en) 1958-10-20 1958-10-20 Thermoprinting apparatus and method

Publications (1)

Publication Number Publication Date
GB946217A true GB946217A (en) 1964-01-08

Family

ID=25082183

Family Applications (2)

Application Number Title Priority Date Filing Date
GB25867/63A Expired GB946217A (en) 1958-10-20 1959-10-20 Improvements in thermoprinting apparatus and method
GB35596/59A Expired GB946216A (en) 1958-10-20 1959-10-20 Improvements in thermoprinting apparatus and method

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB35596/59A Expired GB946216A (en) 1958-10-20 1959-10-20 Improvements in thermoprinting apparatus and method

Country Status (4)

Country Link
US (1) US3056904A (en)
JP (2) JPS374696B1 (en)
ES (1) ES252740A1 (en)
GB (2) GB946217A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105556293A (en) * 2013-09-26 2016-05-04 通用电气公司 Lamp assembly for a thermographic nondestructive evaluation system

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1173495B (en) * 1961-09-29 1964-07-09 Kalle Ag Method and device for producing heat copies
DE1168927B (en) * 1962-02-15 1964-04-30 Zindler Lumoprint Kg Method for making a copy and device for carrying out this method
US3441347A (en) * 1964-06-04 1969-04-29 Agfa Ag Apparatus for producing reflex copies
US3405265A (en) * 1964-12-04 1968-10-08 Gevaert Photo Prod Nv Thermographic copying method and apparatus having means for uniformly pre-heating the copy sheet
US3253530A (en) * 1965-03-08 1966-05-31 Polaroid Corp Photographic apparatus
US3630606A (en) * 1966-03-28 1971-12-28 Pitney Bowes Sage Inc Electrophotographic system
US3475589A (en) * 1966-05-04 1969-10-28 Bell & Howell Co Thermal exposure device
US3506354A (en) * 1967-12-22 1970-04-14 Minnesota Mining & Mfg Copier
US3598993A (en) * 1969-03-06 1971-08-10 Agfa Ag Imaging apparatus using a magnetizable printing ink with a temperature dependent magnetic permeability
US3637976A (en) * 1969-06-14 1972-01-25 Ricoh Kk Fixing device of toner images
US3655285A (en) * 1969-07-24 1972-04-11 Addressograph Multigraph Illumination control for photocopying machine
US3884578A (en) * 1973-08-07 1975-05-20 Raymond Albert Roosen Photographic copying apparatus

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2385736A (en) * 1943-02-12 1945-09-25 Westinghouse Electric Corp Capacitor charging and discharging control
US2443006A (en) * 1944-05-24 1948-06-08 Farnsworth Res Corp Voltage regulator
US2491342A (en) * 1945-06-14 1949-12-13 Townshend John Horace Stroboscope
US2441822A (en) * 1945-11-06 1948-05-18 Raytheon Mfg Co Condenser charging and discharging system
CA552750A (en) * 1947-05-10 1958-02-04 Minnesota Mining And Manufacturing Company Heat-sensitive copying-paper
US2486250A (en) * 1947-12-24 1949-10-25 Donald R Middleton Voltage regulator
NL144070C (en) * 1948-02-27
US2774013A (en) * 1949-04-07 1956-12-11 Gen Electric Electric discharge lamp
US2663816A (en) * 1949-09-28 1953-12-22 Sylvania Electric Prod Electric discharge lamp
US2722631A (en) * 1950-03-15 1955-11-01 Gen Electric Flashtube triggering circuit
US2733371A (en) * 1950-05-12 1956-01-31 Internally conducttvely coated
US2740895A (en) * 1950-08-21 1956-04-03 Minnesota Mining & Mfg Thermoprinting apparatus
DE857228C (en) * 1950-12-10 1952-11-27 Blaupunkt Werke Gmbh Voltage limiting circuit for electrical discharge devices
US2875395A (en) * 1953-10-09 1959-02-24 North Electric Co Battery charger apparatus
US2866151A (en) * 1955-01-18 1958-12-23 Kay Lab Voltage regulator with non-linear networks in control circuit
US2925549A (en) * 1955-10-03 1960-02-16 Federal Ind Ind Group Inc Electric power responsive system
US2844733A (en) * 1956-04-02 1958-07-22 Minnesota Mining & Mfg Reflex thermoprinting
US2919369A (en) * 1956-06-01 1959-12-29 Harold E Edgerton Flash tube and apparatus
US2914720A (en) * 1957-08-05 1959-11-24 Lorain Prod Corp Voltage and current regulator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105556293A (en) * 2013-09-26 2016-05-04 通用电气公司 Lamp assembly for a thermographic nondestructive evaluation system
CN105556293B (en) * 2013-09-26 2018-12-04 通用电气公司 Lamp/subassembly for thermal imagery nondestructive evaluation system

Also Published As

Publication number Publication date
GB946216A (en) 1964-01-08
JPS374696B1 (en) 1962-06-15
US3056904A (en) 1962-10-02
JPS4028015B1 (en) 1965-12-10
ES252740A1 (en) 1960-04-01

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