Abstract: A saw blade for an electric saw tool with a drive shaft making a reciprocating arcuate swing motion, the saw blade comprising a saw plate which has centrally a coupling part for connecting and fixing the saw plate to the drive shaft of the saw tool and has an appearance as being elliptic, and has cutting teeth on the outer periphery. Also, a saw blade for an electric saw tool with a drive shaft making a reciprocating arcuate swing motion, the saw blade having at one end a coupling part for connecting and fixing the saw blade to the drive shaft of the saw tool and having at the other end cutting teeth of the saw blade, and height of the cutting teeth being smaller in the order from near to at both ends of a line of the teeth.

Abstract: A saw blade for an electric saw tool with a drive shaft making a reciprocating arcuate swing motion, the saw blade comprising a saw plate which has centrally a coupling part for connecting and fixing the saw plate to the drive shaft of the saw tool and has an appearance as being elliptic, and has cutting teeth on the outer periphery. Also, a saw blade for an electric saw tool with a drive shaft making a reciprocating arcuate swing motion, the saw blade having at one end a coupling part for connecting and fixing the saw blade to the drive shaft of the saw tool and having at the other end cutting teeth of the saw blade, and height of the cutting teeth being smaller in the order from near to at both ends of a line of the teeth.

Abstract: A high-security, low-cost, corrosion proof, insect proof such as ant proof, low in formic aldehyde concentration level and significantly useful adhesive for wood is provided and a woody material such as plywood manufactured by the use of the adhesive is also provided.

Abstract: A both-face automatic original feeding apparatus wherein a plurality of originals having images on their first and second surfaces are successively supplied from an original stacking portion to a predetermined position for reading an original, and each original is reversely rotated through a switch-back path after the first surface of the original passes through the predetermined position, thereby supplying the original to the predetermined position again to direct the second surface of the original to the predetermined position.

Abstract: An original document feeding apparatus introduces an original document to a reading position to read image information of the original document, provided is a first delivery passage for delivering the original document from the reading position, a second deliverying passage branching off from the first delivery passage, and conveyance route switching unit selectively movable between a first position for introducing the original document to the first delivery passage and a second position for introducing the original document to the second delivery passage, each without projecting in the first delivery passage.

Abstract: A blade holder attached to a saw handle. The saw blade includes a slot on one side, and is engaged inside the blade holder and is securely held in place by stoppers formed inside the holder's frame and by pressure applied by spring action. This spring action is created via a turning of a knob and attached pressing part and protrusion. When the knob is in a loosened position, the blade is easily removed and replaced through a holder receiving part. A new blade is received through the receiving part and by tightening the knob, the new blade is thereby secured in the holder.

Abstract: An automatic original feeding device has a mounting unit for mounting originals, a first sheet conveying path for conveying an original mounted on the mounting unit to a predetermined position, and a second sheet conveying path for guiding the original output from the predetermined position to a discharging unit. The device can be opened to expose the first and second sheet conveying paths. The device also includes display units, each provided in the vicinity of the corresponding one of the first and second sheet conveying paths, for displaying information about originals remaining in the first and second sheet conveying paths.

Abstract: In order to supply a sheet to an image forming device, there is provided a manual insertion guide for supporting a manually inserted sheet and a cassette for supporting a sheet to be automatically supplied, and a guide portion for guiding the sheet fed from the cassette is integrally formed with the manual insertion guide. The manual insertion guide has side regulating members for regulating the side edges of the manually inserted sheet.

Abstract: An image fixing apparatus includes a heater; a film movable together with a recording material in contact with the heater; a pressing member for establishing press-contact between the heater and the film and between the film and the recording medium; and a shutting device for shutting power supply to the heater upon release of the pressure contact.

Abstract: An image heating device includes a heater; an endless belt movable together with a recording material carrying an image; wherein the image carried upon the recording material is heated through the endless belt by heat from the heater; a lateral shift controller for controlling the endless belt to shift laterally in the alternating directions within a predetermined range; and a lateral shifting range controller for controlling the range by the lateral shift controller.

Abstract: An image forming apparatus includes image forming device for forming an unfixed image on a recording material; a fixing device for fixing the unfixed image on the recording material, the fixing device including a heater which is stationary in use, a film in sliding contact with the heater and a pressing member cooperative with the film to form a nip for receiving the recording material, and an opening portion for opening the apparatus for permitting jam clearance operation of the recording material in the fixing device. The pressing member and the film are separated from each other in association with opening of the opening portion.