Abstract: An imaging method capable of producing high-resolution full color images on substrates such as flexible plastics sheets to form weatherable signs for exterior display, the method comprising:(a) providing a plurality of carrier sheets, each comprising a flexible base material having on one surface thereof a strippable resin layer;(b) imaging each carrier sheet by passage through an electrophotographic copying apparatus so that a toner image corresponding to a section of a desired image is deposited and fused on said strippable resin layer of each sheet;(c) adhesively bonding the side of each carrier sheet bearing said toner image to a first substrate, each carrier sheet being positioned such that the desired image is formed from the arrangement of the imaged carrier sheets;(d) stripping from the composite comprising the first substrate, toner image and resin layer, the flexible base material of each carrier sheet, and,(e) adhesively bonding a second substrate to said resin layer,wherein at least one of the fir

Abstract: A photothermographic element comprising a substrate having coated thereon a photothermographic medium comprising a binder having dispersed therein an organic silver salt or complex, a photocatalyst and a reducing agent, characterized in that the photothermographic medium contains as an antifoggant, in the absence of mercury compounds, an effective antifogging amount of a compound of the general formula: ##STR1## characterized in that: X.sup.1 and X.sup.2 independently represent halogen atoms,X.sup.3 represents a halogen atom or an electron withdrawing substituent, andZ represents the necessary atoms to complete a ring system which may comprise a single ring or a fused ring system which rings may bear substituents.

Abstract: A composition which forms a hair bleaching solution when mixed with water comprising: hydrogen peroxide liberator, ammonia liberator, thickener and alkaline compound. A bleach accelerator and heavy metal complexing agent are preferably used in this composition.

Abstract: An effective thickening agent comprises particulate matter of less than 425 microns when said particulate matter comprises silica particles bonded to an acrylic polymer capable of hydrogen bonding.