The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 17, 1989
Filed:
Jan. 29, 1987
Yoshio Idota, All of Kanagawa, JP;
Yukio Karino, All of Kanagawa, JP;
Hiroshi Hayashi, All of Kanagawa, JP;
Hideki Tomiyama, All of Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A process for forming an image by silver salt diffusion transfer comprising developing a light-sensitive element which comprises a support having provided thereon a light-sensitive silver halide emulsion layer which has been imagewise exposed to light by an alkaline processing composition in the presence of a silver halide solvent so that at least a part of silver halide unexposed in said emulsion layer is converted to a transferable silver complex salt, and then transferring at least a part of said silver complex salt to an image-receiving layer containing a silver precipitating agent to form an image on said image-receiving layer, wherein the concentration of said silver precipitating agent in said image-receiving layer is in the range of from 2.times.10.sup.-6 to 8.times.10.sup.-6 mol/m.sup.2 and at least one of said light-sensitive element and said alkaline processing composition contains at least one of a compound represented by formula (I) and a compound represented by formula (II) ##STR1## wherein R.sub.1 represents a phenyl group or a phenyl group substituted by an alkyl group having 1 or 2 carbon atoms; R.sub.2 and R.sub.3 each represents a hydrogen atom, an alkyl group having from 1 to 3 carbon atoms, or a hydroxyalkyl group having from 1 to 3 carbon atoms; and R.sub.4 and R.sub.5 each represents a hydrogen atom, an alkyl group having from 1 to 3 carbon atoms, a phenyl group, a phenyl group substituted by an alkyl group having from 1 to 3 carbon atoms; ##STR2## wherein R.sub.6 and R.sub.7 each represents a hydrogen atom or an alkyl group having from 1 to 3 carbon atoms; R.sub.8 represents an alkyl group having from 1 to 4 carbon atoms; and n represents an integer of from 1 to 3.