Abstract: A combine is a work vehicle that autonomously travels on the basis of a preset travel route, and is provided with an autonomous travel allowance switch, which is an autonomous travel allowance operation member that allows autonomous travel, and a control device that functions as an autonomous travel control part that controls autonomous travel based on the travel route. The autonomous travel control part executes autonomous travel based on the travel route while the autonomous travel allowance switch is being operated (pressed).

Abstract: A combine is a work vehicle that autonomously travels on the basis of a preset travel route, and is provided with an autonomous travel allowance switch, which is an autonomous travel allowance operation member that allows autonomous travel, and a control device that functions as an autonomous travel control part that controls autonomous travel based on the travel route. The autonomous travel control part executes autonomous travel based on the travel route while the autonomous travel allowance switch is being operated (pressed).

Abstract: A combine harvester is provided with a controller, and the controller functions as an automatic traveler and a switch. The automatic traveler executes the automatic traveling of the combine harvester in the automatic straight work. The switch switches automatic traveling of the combine harvester to manual traveling, during the performing of the automatic traveling, when detecting a shift from an un-mowed area to an already mowed area.

Abstract: An image forming apparatus includes a plurality of image bearing components and a plurality of image writing units for writing an image on each of the image bearing components. The apparatus also includes a frame for supporting the plurality of the image bearing components and the plurality of image writing units. The frame has a plurality a of first holding parts for holding both ends of each of the image bearing components and a plurality of second holding parts for holding both ends of each of the image writing units.

Abstract: In a conventional color printer, especially an in-line type full color image forming apparatus, an aberration of optical axes caused by distortions of structures affect a performance of an image forming as a tilt aberration in a printed image. Accordingly, in a conventional color printer, distortions have to be prevented by strengthening rigidity of machine structures or parts of the machine. However, fine adjustment or assembling to strengthen rigidity generally causes an increase in cost and requires time-consuming adjustment. An apparatus in the present invention provides advantages of high accuracy and strengthened structure without increasing cost.

Abstract: A metal is attached on a passage-forming core by electrocasting to provide a primary metal layer. A plurality of grooves are formed on the primary metal layer and are filled with filler of low melting point. A metal is attached on the primary metal layer by electrocasting to provide a secondary metal layer. Openings are formed on the secondary metal layer adjacent to its opposite ends so as to communicate with the grooves. The filler in the grooves is melted to provide a plurality of coolant passages. The openings are filled with manifold-forming cores made of filler with low melting point. A metal is attached on the manifold-forming cores by electrocasting to provide tertiary metal layers. Through holes are formed on the tertiary metal layers. The passage-forming core is dissolved and the manifold-forming cores are melted to provide a gas passage and manifolds.