Sheet discharging device that chooses a sheet discharging speed according to the sheet's length or rigidity
AssigneeCanon Kabushiki Kaisha
InventorsNoriyoshi Ueda, Yuji Takahashi, Makoto Kitahara
Life of this patent
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Abstract
A sheet discharging device has a sheet support, a sheet discharge part, a detector and means for controlling the transport condition at the time of sheet discharge. The detector detects the length or characteristic of a sheet before its discharge. Thus a transport condition of a sheet can be changed at the time of its discharge dependent on its length or characteristic and the sheet is discharged adjustably.
Claims70
An image reading device comprising, means for forwarding originals, image reading means for reading images on the originals forwarded by said forwarding means, means for discharging the originals the images on which were read by said reading means, an original support for receiving originals discharged by said discharging means, a detector for detecting the length of an original to be discharged by said discharging means and for transmitting a detection signal and means for controlling said discharging means according to the detection signal sent by said detector, wherein said controlling means is constructed and arranged to control said discharging means at least a first discharging speed, a second discharging speed which is lower than the first discharging speed, and a third discharging speed which is lower than the second discharging speed.
A sheet discharging device comprising, a sheet support for discharged sheets, means for discharging sheets onto said sheet support, a detector for detecting the length of a sheet to be discharged by said discharging means in a discharging direction and transmitting a sheet length detection signal and means for controlling said discharging means according to the detection signal transmitted by said detector, wherein said control means changes the discharging speed of a sheet based on the detection signal transmitted by said detector and wherein a sheet which is determined by the said detector to be greater than a predetermined size is discharged, at an early stage, at a lower speed than a sheet which is determined to be shorter than the predetermined size and, at a later stage, at a higher speed than at the early stage.
A sheet discharging device comprising, a sheet support for discharged sheets, means for discharging sheets onto said sheet support, a detector for detecting the length of a sheet to be discharged by said discharging means in a discharging direction and transmitting a sheet length detection signal and means for controlling said discharging means according to the detection signal transmitted by said detector, wherein said control means changes the discharging speed of a sheet based on the detection signal transmitted by said detector and wherein a sheet which is detected by the said detector to be larger than a pre-determined size is discharged at an early stage, at a lower stage than a sheet which is smaller than the pre-determined size, at an intermediate stage at a higher speed than at the early stage, and then at a last stage it is discharged at a lower speed than at the intermediate stage.
A sheet discharging device comprising, a sheet support for discharged sheets, means for discharging sheets onto said sheet support, a detector for detecting the length of a sheet to be discharged by said discharging means in a discharging direction and transmitting a sheet length detection signal and means for controlling said discharging means according to the detection signal transmitted by said detector, wherein said controlling means reduces the discharging speed of a sheet while the sheet is passing through said discharging means and said controlling means is constructed and arranged to control said discharging means at least at one of a first discharging speed, a second discharging speed which is lower than the first discharging speed and a third discharging speed which is lower than the second discharging speed.
A sheet discharging device comprising, a sheet support, means for discharging sheets on to said sheet support, a detector for determining the length of a sheet to be discharged by said discharging means in a discharging direction and transmitting a detection signal and means for controlling said discharging means according to the detection signal transmitted by said detector, while a sheet is passing through said discharging means whereby the shorter the sheet length detected, the slower the discharge speed and wherein, where the length of a sheet detected by said detector is greater than a fixed length, said controlling means reduces the discharging speed upon lapse of a fixed time after said pass detection signal is transmitted and, where the length of a sheet detected by said detection is shorter than a fixed length, said controlling means reduces the discharging speed upon lapse of a second fixed time which is shorter than said fixed time after said pass detection signal is transmitted.
A sheet discharging device, comprising means for discharging a sheet to a certain position, information generating means for generating information as to flexible rigidity of the sheet and means for controlling sheet discharge at a discharge speed according to the information generated by said information generating means, wherein said control means changes the discharging speed of a sheet based on the information generated by said information generating means.
A sheet discharging device comprising:
- discharging means for discharging a sheet;
- support means for receiving and supporting a sheet discharged by said discharging means;
- information generating means for generating information about a length of a sheet in a direction of discharge;
- and
- controlling means for controlling said discharging means after sheet discharging has started at a predetermined speed so that the discharge of the sheet is completed at a speed which corresponds to the information generated by said information generating means and is lower than the predetermined speed.
A sheet discharging device comprising:
- discharging means for discharging a sheet;
- supporting means for receiving and supporting a sheet discharged by said discharging means;
- information generating means for generating information about a length of a sheet in a direction of discharge;
- and
- controlling means for changing a sheet discharging speed of said discharge means after a time period determined in accordance with the information generated by said information generating means has expired after the sheet has passed a predetermined position.
An image forming device comprising:
- an image forming means for forming an image on a sheet;
- transportation means for transporting a sheet to said image forming means;
- discharging means for discharging a sheet on which an image is formed by said image forming means;
- supporting means for receiving and supporting a sheet discharged by said discharging means;
- information generating means for generating information about the length of a sheet in a direction of discharge;
- and
- controlling means for controlling said discharging means so that the discharge of the sheet is completed at a speed which corresponds to the information generated by said information generating means and is lower than a speed at which the discharge of the sheet started.
An image reading device comprising:
- reading means for reading an image on the sheet;
- transportation means for transporting a sheet to said reading means;
- discharging means for discharging a sheet whose image is read by said reading means;
- supporting means for receiving and supporting a sheet discharged by said discharging device;
- information generating means for generating information about the length of a sheet in a direction of discharge;
- and
- controlling means for controlling said discharging means after the discharge of the sheet started at a predetermined speed so that the discharge of the sheet is completed at a speed which corresponds to the information generated by said information generating means and is lower than the predetermined speed.
An image reading device comprising:
- reading means for reading an image on a sheet;
- transporting means for transporting a sheet to said reading means;
- discharging means for discharging a sheet whose image is read by said reading means;
- placing means for receiving and placing a sheet discharged from said discharging means;
- information generating means for generating the information about the length of a sheet in a direction of discharge;
- and
- controlling means for changing sheet discharging speed of said discharging means when a period of time set according to the information generated by said information generating means has elapsed after the sheet has passed a predetermined position.
An image forming device comprising:
- reading means for reading an image of an original;
- transporting means for transporting an original to said reading means;
- discharging means for discharging an original whose image is read by said reading means;
- supporting means for receiving and supporting an original discharged by said discharging means;
- information generating means for generating the information about the length of an original in a direction of discharge;
- controlling means for changing sheet discharging speed of said discharging means when a period of time set according to the information generated by said information generating means has elapsed after the sheet has passed a predetermined position;
- and
- image forming means for forming an original image read by said reading means, onto a sheet.
A sheet discharging device comprising:
- discharging means for discharging a sheet;
- supporting means for receiving and supporting a sheet discharged by said discharging means;
- information transmitting means for transmitting information about the length of a sheet in a direction of discharge;
- and
- controlling means for changing a sheet discharging speed of said discharging means when a period of time set according to the information transmitted by said information transmitting means has elapsed after the sheet has passed a predetermined position, wherein said controlling means changes the sheet discharging speed from a first speed to a second speed when the sheet length according to the information transmitted by the information transmitting means is within a first range, and changes from the first speed to a third speed when the sheet length is within a second range.
An image reading device comprising:
- reading means for reading an image on an original;
- transporting means for transporting an original to said reading means;
- discharging means for discharging an original whose image is read by said reading means;
- supporting means for receiving and supporting an original discharged by said discharging device;
- information generating means for generating information about the length of an original in a direction of discharge;
- controlling means for controlling said discharging means after the discharge of the sheet started at a predetermined speed so that the discharge of the sheet is completed at a speed which corresponds to the information generated by said information generating means and is lower than the predetermined speed;
- and
- image forming means for forming an original image on a sheet read by said reading means.
An image forming device comprising:
- image forming means for forming an image on a sheet;
- transporting means for transporting a sheet to said image forming means;
- discharging means for discharging a sheet to said image forming means;
- discharging means for discharging a sheet on which an image is formed by said image forming means;
- supporting means for receiving and supporting a sheet discharged by said discharging means;
- information generating means for generating information about the length of a sheet in a direction of discharge;
- and
- controlling means for changing sheet discharging speed of said discharge means when a period of time set according to the information generated by said information generating means has elapsed after the sheet has passed a predetermined position.
Dependencies are inferred from the claim text.