Abstract: A printer according to an embodiment of the present invention is a printer which transports a recording medium, provided with a plurality of laminated sheets, along a predetermined transport path including a curved portion. The printer is provided with a dot head for printing the recording medium, a platen roller which faces the dot head with the recording medium therebetween, and a feed guide which is located on the downstream side of the dot head and the platen roller with respect to the direction of transport and guides the recording medium in a manner such that the recording medium is bent in a direction opposite to that in which the curved portion is bent.

Abstract: In a chain comprising interconnected link plates at least some of which come into sliding contact with one or more chain guides, at least some of the link plate edges that come into sliding contact with the guides have a convex curvature with different curvatures on the front and rear sides of an apex at an intermediate location. The radius of curvature on the front side of the apex is greater than the radius of curvature on the rear side of the apex. The front and rear curvatures can be circular or cycloidal. Alternatively, one of the front and rear portions can be circular while the other is cycloidal.

Abstract: A printer according to an embodiment of the present invention is a printer which transports a recording medium, provided with a plurality of laminated sheets, along a predetermined transport path including a curved portion. The printer is provided with a dot head for printing the recording medium, a platen roller which faces the dot head with the recording medium therebetween, and a feed guide which is located on the downstream side of the dot head and the platen roller with respect to the direction of transport and guides the recording medium in a manner such that the recording medium is bent in a direction opposite to that in which the curved portion is bent.

Abstract: There is provided a rolling slide member coming in contact with a mating member in a rolling or sliding manner, wherein a plurality of grooves having an inclination of 0 to 30 degree and a groove depth of 0.5 to 15 ?m are formed in a circumferential direction at the time of grinding a contact surface with the mating member. In the contact surface, the axial surface waviness is set to 0.1 or more in the filtered centerline waviness (WCA) and the axial surface roughness is set to 0.7 or more in the ten-point height of roughness profile (Rz) by the grooves 26.

Abstract: A head carrier on which a print head of a dot matrix printer is mounted has a head mount and a mount support. The head mount is fitted to a carrier shaft that is placed in a direction crossing a direction of supplying a recording medium, and moved along the printing surface on a recording medium. A mount support is fitted movably along a carrier guide that is placed with one end connected to the head mount, and the other end placed parallel to the carrier shaft.

Abstract: There is provided a rolling slide member coming in tact with a mating member in a rolling or sliding manner, rein a plurality of grooves having an inclination of 0 to 30 degree and a groove depth of 0.5 to 15 ?m are formed in a circumferential direction at the time of grinding a contact face with the mating member. In the contact surface, the axial surface waviness is set to 0.1 or more in the filtered centerline waviness (WCA) and the axial surface roughness is set to 0.7 or more in the ten-point height of roughness profile (Rz) by the grooves 26.

Abstract: The improved sample loading sheet for loading an assay sample in specified lane positions in a gel electrolyte layer in an electrophoresis plate to be used in a gel electrophoretic apparatus is formed of cation-exchange chromatographic paper and has part or all of at least one of its principal surfaces coated with a water-resistant resin film. The sheet enables DNA samples to be positively absorbed and migrate to produce ladder patterns at high resolution.

Abstract: An image scanner includes a convey path for a document sheet, convey rollers for moving the document sheet along the convey path, an image sensor for reading an image from the document sheet while said document sheet passes in front of said image sensor, and a driving section for driving said convey rollers to move the document sheet forward. The driving section of the image scanner drives the convey rollers to move the document sheet backward it is detected that the document sheet has passed the image sensor.