Abstract: A printing apparatus performs printing by scanning a carriage unit over a print medium based on information transmitted from an external apparatus. The body of the carriage unit includes a removable printhead having a plurality of nozzles for discharging ink; a heat source detection unit for detecting the number of heat sources driving the nozzles; and a voltage generation unit for supplying a voltage to the heat sources for driving the nozzles in accordance with the number of heat sources detected by the heat source detection unit.

Abstract: Printing apparatus which performs printing by scanning a carriage unit over a print medium based on information transmitted from an external apparatus. The body (53) of the carriage unit includes: a removable printhead (51) having a plurality of nozzles for discharging ink; a heat source detection unit (59) for detecting the number of heat sources driving the nozzles; and a voltage generation unit (60) for supplying a voltage to the heat sources for driving the nozzles in accordance with the number of heat sources detected by the heat source detection unit.

Abstract: A DNA fragment coding for squamous cell carcinoma-associated antigen is first isolated and prepared by DNA recombination techniques. The fragments thus obtained are useful as diagnostic reagents for the squamous cell carcinoma and as immunogens.

Abstract: An electric contact with a base metal used as a switch wherein the non-welded peripheral portion of the contact is prevented from bow-like bending and from peeling off. The electric contact with a base metal having a contact promoting shape is formed by die forging of a contact material joined to the base metal by resistance welding. The composite contact material is prepared by coating the core material of Ag-oxide contact material with non-oxide contact material. The side of the material in contact with the base metal is of non-oxide contact material. The contact material may be pressed to fill a groove preformed in the base metal, welded to protrusions preformed in the base metal, welded to the bottom of a cut preformed in the base metal, or welded to bottoms of recesses preformed in the base metal.

Abstract: A process for the detection of cancer comprises an immunological assay of a glycolipid present in blood, thoracic cavity fluid, abdominal dropsy or urine wherein the glycolipid can be any one selected from the group consisting of:(1) asialo GM.sub.1 : galactosyl-N-acetylgalactosaminyl-galactosyl-glucosyl-ceramide;(2) asialo GM.sub.2 : N-acetylgalactosaminyl-galactosyl-glucosyl-ceramide;(3) fuco GA.sub.1 : fucosyl-galactosyl-N-acetylgalactosaminyl-galactosyl-glucosyl-ceramide; and(4) paragloboside: galactosyl-N-acetylglucosaminyl-galactosyl-glucosyl-ceramide.These glycolipids have been found to increase in body fluids with a proliferation of cancer cells.