JPS56143428A - Heat developing diazo type copying material - Google Patents

Heat developing diazo type copying material

Info

Publication number
JPS56143428A
JPS56143428A JP4673780A JP4673780A JPS56143428A JP S56143428 A JPS56143428 A JP S56143428A JP 4673780 A JP4673780 A JP 4673780A JP 4673780 A JP4673780 A JP 4673780A JP S56143428 A JPS56143428 A JP S56143428A
Authority
JP
Japan
Prior art keywords
acid
releasing agent
copying material
thio
urea
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.)
Pending
Application number
JP4673780A
Other languages
Japanese (ja)
Inventor
Kaneo Yamamoto
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP4673780A priority Critical patent/JPS56143428A/en
Publication of JPS56143428A publication Critical patent/JPS56143428A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/52—Compositions containing diazo compounds as photosensitive substances
    • G03C1/61—Compositions containing diazo compounds as photosensitive substances with non-macromolecular additives
    • G03C1/615—Substances generating bases

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Abstract

PURPOSE:To stabilize a copying material at ordinary temp., elongate the shelf life and allow the mqterial to color at a low heating temp. by adding a specified amount of a thermally base releasing agent such as (thio)urea and an ecidic or neutral salt of a specified heat sensitive org. acid as a base releasing accelerator by >=50wt% to the amount of the releasing agent. CONSTITUTION:To a photosensitive layer is added (thio)urea, thiosemicarbazide, carbohydrazide or alkyl-substituted (thio)urea as a thermally base releasing agent by >=30wt% to the total composition of the layer and further added a neutral or acidic salt of a heat sensitive org. acid such as formic acid, acetic acid, propionic acid, lactic acid, malic acid, maleic acid or tartaric acid of Zn, Mg, Ca or Ba as a base releasing accelerator by >=50wt% to the amount of said releasing agent. A heat developing copying material contg. the releasing agent and the accelerator in a single layer together with a diazonium compound and a coupler is applied to a substrate having an under-coat of colloridal silica or starch and polyvinyl alcohol to manufacture copying paper. Thus, a clear image is obtd. on the white ground at about 150 deg.C. This copying material is not colored naturally during storage.
JP4673780A 1980-04-11 1980-04-11 Heat developing diazo type copying material Pending JPS56143428A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4673780A JPS56143428A (en) 1980-04-11 1980-04-11 Heat developing diazo type copying material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4673780A JPS56143428A (en) 1980-04-11 1980-04-11 Heat developing diazo type copying material

Publications (1)

Publication Number Publication Date
JPS56143428A true JPS56143428A (en) 1981-11-09

Family

ID=12755635

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4673780A Pending JPS56143428A (en) 1980-04-11 1980-04-11 Heat developing diazo type copying material

Country Status (1)

Country Link
JP (1) JPS56143428A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4860621A (en) * 1971-11-26 1973-08-25

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4860621A (en) * 1971-11-26 1973-08-25

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