Abstract: A method of controlling an inkjet printer when printing on a substrate that is to be shrink wrapped on to an object (10), by loading an image file on to a raster image processor; undertaking raster image processing on the loaded image file to generate raster image data for controlling discharge of ink droplets on to the substrate; receiving an indication of a shape (19) of the object (10); and manipulating the generated raster image data in response to the indication of the shape (19) of the object (10) to alter the distribution and/or size of droplets applied to the substrate to take into account anticipated changes (14) in a dimension (11, 12, 13) of the substrate due to shrinkage into contact with the object (10). Also a printer for carrying out the method.

Abstract: A continuous inkjet printer (50) has an ink droplet generator (52) and a controller (58) that varies a modulating voltage applied to the ink droplet generator (52) and measures corresponding breakup times of a jet of ink into ink droplets to obtain a portion of a characteristic of breakup time against modulating voltage. The controller (58) obtains a variation range, varies the modulating voltage over the variation range to obtain the portion of the characteristic, calculates a gradient from the portion of the characteristic, compares the gradient with a predetermined gradient and, depending on whether the calculated gradient is less than or greater than the predetermined gradient, generates an adjusted variation range that is displaced in a first sense or a second, opposite sense, respectively, relative to the variation range.

Abstract: The invention describes a method and apparatus for characterising EHT tripping events and thus discriminating between false trip events and those that warrant the printer being shut down.

Abstract: The present invention relates to an inkjet ink comprising a colorant; a first resin; a second resin; an aminosilane; and an organic solvent; wherein the second resin is a styrene maleic anhydride and the second resin is different to the first resin.

Abstract: The present invention relates to an inkjet ink including a photo-chromic colorant and a UV absorber. The ink may be used as a time-temperature indicator and is particularly useful in packaging food and/or drink to provide an indication of the quality of the contents.

Abstract: The invention describes a method and apparatus for characterising EHT tripping events and thus discriminating between false trip events and those that warrant the printer being shut down.

Abstract: The present invention relates to an inkjet ink comprising a colorant; a first resin; a second resin; an aminosilane; and an organic solvent; wherein the second resin is a styrene maleic anhydride and the second resin is different to the first resin.

Abstract: The present invention relates to an inkjet ink comprising a photo-chromic colorant and a UV absorber. The ink may be used as a time-temperature indicator and is particularly useful in packaging food and/or drink to provide an indication of the quality of the contents.

Abstract: Inks for continuous ink jet printer, containing polyamide resins as binders and wherein the polyamide resins are characterized by having a glass transition onset temperature of 95.degree. to 175.degree. and preferably 120.degree. to 140.degree..