JP2007238311A5

JP2007238311A5 -

Info

Publication number: JP2007238311A5
Application number: JP2006066479A
Authority: JP
Filing date: 2006-03-10
Publication date: 2009-04-23
Anticipated expiration: 2026-03-10

Claims

An image forming system including an image forming apparatus that forms an image and a plurality of sheet conveying devices connected to the image forming apparatus in multiple stages,
Communication means and said image forming apparatus and the sheet conveying devices communicate,
A sheet feeding unit for starting sheet feeding when sheet feeding is instructed via the communication unit;
The first conveyance time required from when the sheet feeding is instructed until the sheet arrives at the specific position in the image forming apparatus is from the sheet conveying apparatus where the sheet feeding is instructed to the specific position in the image forming apparatus. An image forming system comprising: an adjusting unit configured to adjust a rotation speed of a conveying roller in the sheet conveying apparatus so as to reach a predetermined target time according to a distance .

The sheet conveying apparatus is
First sheet detecting means for detecting arrival of a sheet in a conveying path in the sheet conveying apparatus;
A first timing unit that counts a second conveyance time required from when the sheet feeding is instructed until a sheet is detected by the first sheet detection unit;
The adjusting unit is configured to calculate a third transport time calculated from a distance from a position where the first sheet detection unit is installed to a specific position in the image forming apparatus and a transport speed of the transport roller. The image forming system according to claim 1, wherein the rotation speed of the conveyance roller is adjusted so as to match a difference between the time and the second conveyance time.

The sheet conveying apparatus is
Recognizing means for recognizing the connection order of each sheet conveying device connected in multiple stages to the image forming apparatus with respect to the image forming apparatus
Storage means for storing the connection order of the sheet conveying apparatus and the target time corresponding to the connection order;
The image forming system according to claim 1, wherein the adjustment unit reads the target time corresponding to the recognized connection order from the storage unit and adjusts the rotation speed of the transport roller.

The adjusting means mounted on the sheet conveying apparatus is configured to detect the sheet before the sheet fed from the sheet conveying apparatus reaches the conveying roller of the sheet conveying apparatus located on the upper stage of the sheet conveying apparatus. The image forming system according to claim 3, wherein the conveyance speed is adjusted to match a conveyance speed when an image is formed on a sheet in the image forming apparatus.

The communication means includes
A first signal line for transmitting a broadcast signal from the image forming apparatus to each sheet conveying apparatus, and a second signal line for transmitting information indicating the use of the broadcast signal transmitted through the first signal line. the image forming system according to any one of claims 1 to 4, characterized in that it comprises and.

The image forming apparatus includes:
Means for determining whether or not the trailing edge of the preceding sheet is located in any of the sheet conveying apparatuses when conveyance of the preceding sheet is temporarily stopped;
When it is necessary to feed a succeeding sheet from a sheet conveying apparatus in which the trailing edge of the preceding sheet is located, the succeeding sheet is temporarily moved to the specific position by temporarily stopping the conveyance of the preceding sheet. Means for determining whether or not to arrive late,
Means for instructing the sheet conveying apparatus for feeding the succeeding sheet to pick up the sheet in accordance with a delay time when the succeeding sheet arrives at the specific position with a delay. the image forming system according to any one of claims 1 to 5, characterized.

A sheet conveying device connected in multiple stages to an image forming apparatus for forming an image,
Communication means and said image forming apparatus and the sheet conveying devices communicate,
A sheet feeding unit for starting sheet feeding when sheet feeding is instructed via the communication unit;
The first conveyance time required from when the sheet feeding is instructed until the sheet arrives at the specific position in the image forming apparatus is from the sheet conveying apparatus where the sheet feeding is instructed to the specific position in the image forming apparatus. And a adjusting unit that adjusts the rotation speed of the conveying roller in the sheet conveying apparatus so as to reach a predetermined target time according to the distance .

A method for controlling a sheet conveying apparatus connected in multiple stages to an image forming apparatus for forming an image,
A step of starting sheet feeding when sheet feeding is instructed via a communication unit that communicates between the image forming apparatus and each sheet conveying apparatus;
The first conveyance time required from when the sheet feeding is instructed until the sheet arrives at the specific position in the image forming apparatus is from the sheet conveying apparatus where the sheet feeding is instructed to the specific position in the image forming apparatus. Adjusting the rotational speed of the conveying roller in the sheet conveying apparatus so as to reach a predetermined target time according to the distance .

An image forming apparatus capable of connecting a plurality of sheet conveying apparatuses,
First determination means for determining whether or not the trailing edge of the preceding sheet is located in any of the sheet conveying apparatuses when the conveyance of the preceding sheet is temporarily stopped;
When it is necessary to feed a succeeding sheet from a sheet conveying apparatus in which the trailing edge of the preceding sheet is positioned, the succeeding sheet is temporarily stopped by conveying the preceding sheet to the image forming apparatus. Second determination means for determining whether or not to arrive at a specific position in the
Instruction means for instructing the sheet conveying apparatus that feeds the succeeding sheet to pick up the sheet in accordance with a delay time when the succeeding sheet arrives at the specific position with a delay. An image forming apparatus.

An image forming apparatus control method capable of connecting a plurality of sheet conveying apparatuses,
Determining whether or not the trailing edge of the preceding sheet is located in any of the sheet conveying apparatuses when the conveyance of the preceding sheet is temporarily stopped;
When it is necessary to feed a succeeding sheet from a sheet conveying apparatus in which the trailing edge of the preceding sheet is positioned, the succeeding sheet is temporarily stopped to convey the succeeding sheet to the image forming apparatus. Determining whether or not to arrive at a specific position within
Instructing the sheet conveying apparatus responsible for feeding the succeeding sheet to pick up the sheet according to a delay time when the succeeding sheet arrives at the specific position with a delay. And a control method for the image forming apparatus.