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US 4,939,552 AGranted
Copying apparatus with drum or fixing roller cleaning belt driven from document scanner
AssigneeMinolta Camera Kabushiki Kaisha
InventorMasahiro Nakanishi
Life of this patent
Estimating the term…
Abstract
A cleaning device for cleaning the surface of an element of a copying apparatus to be cleaned by contacting a cleaning web therewith is connected to a driving mechanism of a scanning member of the copying apparatus and is driven in correlative movement with the scanning member. It is driven only when the scanning member returns to its original position by a one way clutch and by a constant amount of movement irrespective of the amount of movement of the scanning member.
Claims18
A copying apparatus, comprising:
- a photoconductive drum;
- a scanning means for scanning a document placed on a document support table and irradiating an image of the scanned document on a surface of said photoconductive drum, said scanning means having a scanning member movable from a scanning starting position and a scanning ending position and back to said scanning starting position, and a means for driving said scanning member in said movement;
- a developing means for developing an electrostatic latent image formed on the photoconductive drum into a toner image;
- a cleaning means for removing toner remaining on the surface of said photoconductive drum after a toner image has been removed from said drum, said cleaning means having a cleaning web in contact with said surface and a means for transporting said cleaning web for changing the portion of said cleaning web contacting said surface;
- and
- a connecting means for connecting said transporting means for the cleaning web to said driving means for said scanning means, said connecting means including means for transmitting a driving force of said driving means to said transporting means as said scanning member returns to the scanning starting position from the scanning ending position.
3 more elements
A copying apparatus, comprising:
- a photoconductive drum;
- a scanning means for scanning a document placed on a document support table and irradiating an image of the scanning document on a surface of said photoconductive drum, said scanning means having a scanning member movable from a scanning starting position and a scanning ending position and back to said scanning starting position, and a means for driving said scanning member in said movement;
- a developing means for developing an electrostatic latent image formed on the photoconductive drum into a toner image;
- a cleaning means for removing toner remaining on the surface of said photoconductive drum after a toner image has been removed from said drum, said cleaning means having a cleaning web in contact with said surface and a means for transporting said cleaning web for changing the portion of said cleaning web contacting said surface;
- and
- a connecting means for connecting said transporting means for the cleaning web to said driving means for said scanning means, said connecting means including means for transmitting a driving force of said driving means to said transporting means only as said scanning member moves within a predetermined range of movement.
3 more elements
A copying apparatus, comprising:
- a photoconductive drum;
- a scanning means for scanning a document placed on a document support table and irradiating an image of the scanned document on a surface of said photoconductive drum, said scanning means having a scanning member movable from a scanning starting position and a scanning ending position and back to said scanning starting position, and a means for driving said scanning member in said movement;
- a developing means for developing an electrostatic latent image formed on the photoconductive drum into a toner image;
- a cleaning means for removing toner remaining on the surface of said photoconductive drum after a toner image has been removed from said drum, said cleaning means having a cleaning web in contact with said surface and a means for transporting said cleaning web for changing the portion of said cleaning web contacting said surface;
- and
- a connecting means for connecting said transporting means for the cleaning web to said driving means for said scanning means, said connecting means including speed reducing means having a predetermined speed ratio for making the amount of cleaning web transported less than the distance said scanning member is moved.
3 more elements
A copying apparatus, comprising:
- a photoconductive drum;
- a scanning means for scanning a document placed on a document support table and irradiating an image of the scanned document on a surface of said photoconductive drum, said scanning means having a scanning member movable from a scanning starting position and a scanning ending position and back to said scanning starting position;
- a developing means for developing an electrostatic latent image formed on the photoconductive drum into a toner image;
- a cleaning means for removing toner remaining on the surface of said photoconductive drum after a toner image has been removed from said drum, said cleaning means having a cleaning web in contact with said surface and a means for transporting said cleaning web for changing the portion of said cleaning web contacting said surface;
- and
- a driving means for driving said transporting means for transporting said cleaning web for a distance corresponding to the distance from the scanning starting position and the scanning ending position.
3 more elements
A copying apparatus, comprising:
- a photoconductive drum;
- a scanning means for scanning a document placed on a document support table and irradiating an image of the scanned document on a surface of said photoconductive drum, said scanning means having a scanning member movable from a scanning starting position and a scanning ending position and back to said scanning starting position, and a means for driving said scanning member in said movement;
- a developing means for developing an electrostatic latent image formed on the photoconductive drum into a toner image;
- a cleaning means for removing toner remaining on the surface of said photoconductive drum after a toner image has been removed from said drum, said cleaning means having a cleaning web in contact with said surface and a means for transporting said cleaning web for changing the portion of said cleaning web contacting said surface;
- and
- a connecting means for connecting said transporting means for the cleaning web to said driving means for said scanning means, said connecting means including means for transmitting a driving force of said driving means to said transporting means as said scanning member moves the distance between the scanning starting and the scanning ending position.
3 more elements
A copying apparatus, comprising:
- a photoconductive drum;
- a scanning means for scanning a document placed on a document support table and irradiating an image of the scanned document on a surface of said photoconductive drum, said scanning means having a scanning member movable from a scanning starting position and a scanning ending position and back to said scanning starting position, and a means for driving said scanning member in said movement;
- a developing means for developing an electrostatic latent image formed on the photoconductive drum into a toner image;
- means for transferring the toner image on said photoconductive drum onto a copy paper;
- means for fixing the toner image of the copy paper, said fixing means having a pair of rollers, one of which contacts the side of the copy paper having the toner image thereon;
- a cleaning means for removing toner remaining on the surface of said one roller after a toner image has been said drum, said cleaning means having a cleaning web in contact with the surface of said one roller and a means for transporting said cleaning web for changing the portion of said cleaning web contacting said surface;
- and
- a connecting means for connecting said transporting means for the cleaning web to said driving means for said scanning means, said connecting means including means for transmitting a driving force of said driving means to said transporting means as said scanning member returns to the scanning starting position from the scanning ending position.
5 more elements
A copying apparatus, comprising:
- a photoconductive drum;
- a scanning means for scanning a document placed on a document support table and irradiating an image of th scanned document on a surface of said photoconductive drum, said scanning means having a scanning member movable from a scanning starting position and a scanning ending position and back to said scanning starting position, and a means for driving said scanning member in said movement;
- a developing means for developing an electrostatic latent image formed on the photoconductive drum into a toner image;
- means for transferring the toner image on said photoconductive drum onto a copy paper;
- means for fixing the toner image of the copy paper, said fixing means having a pair of rollers, one of which contacts the side of the copy paper having the toner image thereon;
- a cleaning means for removing toner remaining on the surface of said one roller after a toner image has been fixed on a copy paper, said cleaning means having a cleaning web in contact with the surface of said one roller and a means for transporting said cleaning web for changing the portion of said cleaning web contacting said one roller;
- and
- a connecting means for connecting said transporting means for the cleaning web to said driving means for said scanning means, said connecting means including means for transmitting a driving force of said driving means to said transporting means only as said scanning member moves within a predetermined range of movement.
5 more elements
A copying apparatus, comprising:
- a photoconductive drum;
- a scanning means for scanning a document placed on a document support table and irradiating an image of the scanned document on a surface of said photoconductive drum, said scanning means having a scanning member movable from a scanning starting position and a scanning ending position and back to said scanning starting position, and a means for driving said scanning member in said movement;
- a developing means for developing an electrostatic latent image formed on the photoconductive drum into a toner image;
- means for transferring the toner image on said photoconductive drum onto a copy paper;
- means for fixing the toner image of the copy paper, said fixing means having a pair of rollers, one of which contacts the side of the copy paper having the toner image thereon;
- a cleaning means for removing toner remaining on the surface of said one roller after a toner image has been fixed to a copy paper, said cleaning means having a cleaning web in contact with the surface of said one roller and a means for transporting said cleaning web for changing the portion of said cleaning web contacting said surface of said one roller;
- and
- a connecting means for connecting said transporting means for the cleaning web to said driving means for said scanning means, said connecting means including speed reducing means having a predetermined speed ratio for making the amount of cleaning web transported less than the distance said scanning member is moved.
5 more elements
A copying apparatus, comprising:
- a photoconductive drum:
- a scanning means for scanning a document placed on a document support table and irradiating an image of the scanned document on a surface of said photoconductive drum, said scanning means having a scanning member movable from a scanning starting position and a scanning ending position and back to said scanning starting position;
- a developing means for developing an electrostatic latent image formed on the photoconductive drum into a toner image;
- means for transferring the toner image on said photoconductive drum onto a copy paper;
- means for fixing the toner image of the copy paper, said fixing means having a pair of rollers, one of which contacts the side of the copy paper having the toner image thereon;
- a cleaning means for removing toner remaining on the surface of said one roller after a toner image has been fixed to a copy paper, said cleaning means having a cleaning web in contact with the surface of said one roller and a means for transporting said cleaning web for changing the portion of said cleaning web contacting said surface of said one roller;
- and
- a driving means for driving said transporting means for transporting said cleaning web for a distance corresponding to the distance from the scanning starting position and the scanning ending position.
5 more elements
A copying apparatus, comprising:
- a photoconductive drum;
- a scanning means for scanning a document placed on a document support table and irradiating an image of the scanned document on a surface of said photoconductive drum, said scanning means having a scanning member movable from a scanning starting position and a scanning ending position and back to said scanning starting position, and a means for driving said scanning member in said movement;
- a developing means for developing an electrostatic latent image formed on the photoconductive drum into a toner image;
- means for transferring the toner image on said photoconductive drum onto a copy paper;
- means for fixing the toner image of the copy paper, said fixing means having a pair of rollers, one of which contacts the side of the copy paper having the toner image thereon;
- a cleaning means for removing toner remaining on the surface of said one roller after a toner image has been fixed to a copy paper, said cleaning means having a cleaning web in contact with said surface of said one roller and a means for transporting said cleaning web for changing the portion of said cleaning web contacting said surface of said one roller;
- and
- a connecting means for connecting said transporting means for the cleaning web to said driving means for said scanning means, said connecting means including means for transmitting a driving force of said driving means to said transporting means as said scanning member moves the distance between the scanning starting and the scanning ending position.
5 more elements
Dependencies are inferred from the claim text.