Brushing – scrubbing – and general cleaning – Machines
Reexamination Certificate
2000-01-03
2001-02-20
Spisich, Mark (Department: 1744)
Brushing, scrubbing, and general cleaning
Machines
C015S102000, C015S103500
Reexamination Certificate
active
06189173
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a device for removing a substance deposited on the surface of a sheet and, more particularly, to a device for removing toner or similar image forming substance from the surface of a recording sheet.
A device having the above capability has recently been proposed in order to recycle recording sheets carrying images formed by an electrophotographic copier or similar image forming apparatus. Usually, an image formed on a sheet consists of relatively thick and large masses of toner forming major parts of the image, and fine solitary toner particles spaced from the masses. The conventional device has a problem that because many of the solitary toner particles exist around the edges of the image, a separating member included in the device cannot remove all the solitary particles from the sheet. Another problem is that the separating member cannot be smoothly separated from the sheet and is apt to be damaged.
SUMMARY OF THE INVENTION
It is, therefore, an object of the present invention to provide a device capable of surely removing the entire substance deposited on a sheet.
It is another object of the present invention to provide a device for removing a substance deposited on a sheet, and capable of smoothly separating the sheet from a separating member while causing a minimum of damage to the separating member.
In accordance with the present invention, a device for removing a substance deposited on the surface of a sheet has a separating member for exerting, when brought into contact with the substance on the sheet, an adhering force on the substance, and for separating the substance from the sheet when separated from the sheet. A back-up member backs up the rear of the separating member moving with the sheet contacting it. A pressing member faces the back-up member, and presses the sheet and separating member. Projections are formed on the surface of the back-up member on which the rear of the separating member slides.
Also, in accordance with the present invention, a device for removing a substance deposited on the surface of a sheet has a separating member for exerting, when brought into contact with the substance on the sheet, an adhering force on the substance, and for separating the substance from the sheet when separated from the sheet. A back-up member backs up the rear of the separating member moving with the sheet contacting it. A pressing member faces the back-up member, and presses the sheet and separating member. A moving device causes at least a part of the sheet and at least a part of the separating member, once brought into contact with each other and then separated, to again contact each other, and then moves the sheet and separating member.
Further, in accordance with the present invention, a device for removing a substance deposited on the surface of a sheet has a separating member for exerting, when brought into contact with the substance on the sheet, an adhering force on the substances and for separating the substance from the sheet when separated from the sheet. The separating member is movable along an endless path with the sheet contacting it. A back-up member backs up the rear of the separating member. A separator roller separates the sheet from the separating member. The back-up member and separator roller are located inside of the endless path and downstream, in the intended direction of sheet transport, of a nip where the sheet and separator roller contact each other. Grooves are formed in the separator roller at predetermined intervals in the axial direction.
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Maruyama Tooru
Saito Masatoshi
Watanabe Hisao
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh & Company, Ltd.
Spisich Mark
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