Title:
TRANSFER SHEET FOR ELECTROSTATIC PHOTOGRAPHY
Document Type and Number:
WIPO Patent Application WO/1979/000898
Kind Code:
A1
Abstract:
Copolymer comprising a major amount of hydrophobic monomer such as acrylic ester, methacrylic acid ester, aromatic vinyl and vinyl cyanide, and a minor amount of hydrophilic monomer such as acrylic acid and methacrylic acid is stably dispersed in water without the aid of emulsifier. The aqueous dispersion of this copolymer is coated on paper to provide a transfer sheet having better affinity to toner particles, compared to plain paper sheet, when used in wet-type and dry-type electrostatic photographies, thereby providing images of high quality. Polyethyleneimine or polyepoxy compounds may be added to the aqueous dispersion to crosslink the copolymer, thus resulting in the improvement of transfer heet characteristics for copying. To be more effective in writing quality, polyacrylamide is added.
Inventors:
YAMAZAKI A (JP)
Application Number:
PCT/JP1979/000086
Publication Date:
November 15, 1979
Filing Date:
April 05, 1979
Export Citation:
Assignee:
NIPPON JUNYAKU KK (JP)
YAMAZAKI A (JP)
YAMAZAKI A (JP)
International Classes:
D21H17/37; G03G7/00; (IPC1-7): G03G7/00
Foreign References:
| JPS4979243A | 1974-07-31 | |||
| JPS4979244A | 1974-07-31 | |||
| JPS5123739A | 1976-02-25 | |||
| JPS5143148A | 1976-04-13 | |||
| JPS5177231A | 1976-07-05 | |||
| JPS5178235A | 1976-07-07 | |||
| JPS493935B1 | 1974-01-29 | |||
| JPS4945734A | 1974-05-01 | |||
| JPS4945735A | 1974-05-01 | |||
| JPS5099735A | 1975-08-07 | |||
| JPS5099736A | 1975-08-07 | |||
| JPS5099737A | 1975-08-07 | |||
| JPS5099738A | 1975-08-07 | |||
| JPS5099739A | 1975-08-07 | |||
| JPS5339387A | 1978-04-11 | |||
| JPS5352711A | 1978-05-13 |
Download PDF:
Previous Patent: ELECTROSTATIC RECORDING MEDIUM
Next Patent: METHOD AT THE DIGESTION OF CELLULOSE-CONTAINING MATERIAL
Next Patent: METHOD AT THE DIGESTION OF CELLULOSE-CONTAINING MATERIAL