Abstract: An original cover closer is described in which a compression coil spring can stably and surely work, an original cover can expeditiously and smoothly be operated, and the compression amount of the compression coil spring can be set and changed in an extremely easy manner. The cover closer comprises: a mounting member mounted to the main body of a copying machine; a supporting member pivotally attached to the mounting member and operable to support the original cover; a first slider and a second slider which are slidably installed in the supporting member; and a compression coil spring inserted between these sliders and operable to urge the original cover in the direction to open, wherein at least one of the sliders is formed integrally with a spring cover which covers the compression coil spring even when the original cover is opened.

Abstract: An original cover closer is described in which a compression coil spring can stably and surely work, an original cover can expeditiously and smoothly be operated, and the compression amount of the compression coil spring can be set and changed in an extremely easy manner. The cover closer comprises: a mounting member mounted to the main body of a copying machine; a supporting member pivotally attached to the mounting member and operable to support the original cover; a first slider and a second slider which are slidably installed in the supporting member; and a compression coil spring inserted between these sliders and operable to urge the original cover in the direction to open, wherein at least one of the sliders is formed integrally with a spring cover which covers the compression coil spring even when the original cover is opened.

Abstract: In an original pressing plate hinge including a fixing member, an original pressing plate supporting member pivotably installed via a hinge pin to the fixing member, a slider slidably housed in the supporting member, a cam member fixed between the slider and the free end of the supporting member in contact with the slider, and a coil spring provided resiliently between the slider and the free end of the supporting member, the cam member is omitted to prevent an original or document set on the platen glass for copying or printing from being stained with or spoiled by a lubricant when the original touches the cam member to which the lubricant sticks, and instead a pressure receiving pin is used and a cam slider is used in place of the slider. To prevent a heavy original pressing plate from abruptly falling, a fluid damping member is housed in the coil spring and disposed between the cam slider and the top plate or free end of the supporting member.

Abstract: In an original pressing plate hinge including a fixing member, an original pressing plate supporting member pivotably installed via a hinge pin to the fixing member, a slider slidably housed in the supporting member, a cam member fixed between the slider and the free end of the supporting member in contact with the slider, and a coil spring provided resiliently between the slider and the free end of the supporting member, the cam member is omitted to prevent an original or document set on the platen glass for copying or printing from being stained with or spoiled by a lubricant when the original touches the cam member to which the lubricant sticks, and instead a pressure receiving pinis used and a cam slider is used in place of the slider. To prevent a heavy original pressing plate from abruptly falling, a fluid damping member is housed in the coil spring and disposed between the cam slider and the top plate or free end of the supporting member.

Abstract: In order to eliminate the cam member, which is mounted to the mounting member side and to which grease is applied, to prevent, as much as possible, the portions to which grease has been applied from becoming exposed to the side of an original placed on the contact glass, an original cover closer is arranged from a mounting member, which has a mounting base and side plates, which are raised from both sides of the mounting base, and has the abovementioned mounting base mounted to the main device unit side, a supporting member, which supports an original cover, has a back plate as well as side plates and a top plate, which are bent from the back plate, and has one end of each of the side plates being rotatably mounted via a hinge pin to the corresponding side plate of the abovementioned mounting member, a cam slider, which is fitted inside the supporting member in a manner enabling sliding towards the side of the abovementioned mounting member, a pressure bearing pin, which is axially mounted between the respect

Abstract: In an original pressing plate hinge including a fixing member, an original pressing plate supporting member pivotably installed via a hinge pin to the fixing member, a slider slidably housed in the supporting member, a cam member fixed between the slider and the free end of the supporting member in contact with the slider, and a coil spring provided resiliently between the slider and the free end of the supporting member, the cam member is omitted to prevent an original or document set on the platen glass for copying or printing from being stained with or spoiled by a lubricant when the original touches the cam member to which the lubricant sticks, and instead a pressure receiving pin or roller is used and a cam slider is used in place of the slider. To prevent a heavy original pressing plate from abruptly falling, a damping member is housed in the coil spring and disposed between the cam slider and the top plate or free end of the supporting member.