Provided is a paper sheet processing apparatus capable of distinguishing a counterfeit bill or a paper sheet suspicious to be a counterfeit bill from bills inserted through an insertion slot to stop a wrongdoing. A storage unit stores information on a paper sheet read by a bill reader and a verification unit verifies the paper sheet using the information on the paper sheet stored in the storage unit. If the paper sheet is determined to be counterfeit in the verification, a conveyance unit conveys the paper sheet toward the insertion slot. A comparison unit compares the image data of the inserted paper sheet with image data of a previously inserted paper sheet and if the image data of the inserted paper sheet is determined to be identical to the image data of the previously inserted paper sheet in the comparison, a control unit sends a signal to a host apparatus.

Provided is a paper sheet processing apparatus capable of distinguishing a counterfeit bill or a paper sheet suspicious to be a counterfeit bill from bills inserted through an insertion slot to stop a wrongdoing. A storage unit stores information on a paper sheet read by a bill reader and a verification unit verifies the paper sheet using the information on the paper sheet stored in the storage unit. If the paper sheet is determined to be counterfeit in the verification, a conveyance unit conveys the paper sheet toward the insertion slot. A comparison unit compares the image data of the inserted paper sheet with image data of a previously inserted paper sheet and if the image data of the inserted paper sheet is determined to be identical to the image data of the previously inserted paper sheet in the comparison, a control unit sends a signal to a host apparatus.

Provided is a paper sheet processing system capable of collecting a wrong paper sheet put in a bill processing apparatus to examine the collected paper sheet without making the supplier feel doubt. A paper sheet processing apparatus verifies a paper sheet using image data acquired by a bill reader when the bill is being conveyed. If the paper sheet is determined to be counterfeit in the verification, the paper sheet processing apparatus holds the paper sheet within the paper sheet processing apparatus and sends a signal from a controller of the paper sheet processing apparatus to instruct a report device to report a result different from the result of the verification. The report device reports a result irrelevant to use of a wrong paper sheet.

Provided is a paper sheet processing system capable of collecting a wrong paper sheet put in a bill processing apparatus to examine the collected paper sheet without making the supplier feel doubt. A paper sheet processing apparatus verifies a paper sheet using image data acquired by a bill reader when the bill is being conveyed. If the paper sheet is determined to be counterfeit in the verification, the paper sheet processing apparatus holds the paper sheet within the paper sheet processing apparatus and sends a signal from a controller of the paper sheet processing apparatus to instruct a report device to report a result different from the result of the verification. The report device reports a result irrelevant to use of a wrong paper sheet.

Provided is a paper sheet processing system capable of preventing a large number of wrong paper bills put in a paper sheet processing apparatus at one time from being exchanged with clean money. A bill processing apparatus sends information on a total amount of the bills supplied to the bill processing apparatus incorporated in a gaming machine and the number of games played by a player counted by a counter to a management server. The management server compares the total amount with a predetermined amount and if the total amount is higher than the predetermined amount, compares the counted number of games with a predetermined number. If the counted number of games is smaller than the predetermined number, the management server sends a report signal to a management apparatus.

Provided is a paper sheet processing system capable of preventing a large number of wrong paper bills put in a paper sheet processing apparatus at one time from being exchanged with clean money. A bill processing apparatus sends information on a total amount of the bills supplied to the bill processing apparatus incorporated in a gaming machine and the number of games played by a player counted by a counter to a management server. The management server compares the total amount with a predetermined amount and if the total amount is higher than the predetermined amount, compares the counted number of games with a predetermined number. If the counted number of games is smaller than the predetermined number, the management server sends a report signal to a management apparatus.

A sheet processing apparatus arranged in a space between an image reading section for reading an image and an image formation section for forming an image on a sheet includes a carry-in path guiding a sheet from a carry-in entrance; a relay roller provided in the carry-in path to relay and transport the sheet; a first transport path positioned on a downstream side of the relay roller and having a carry-in roller to transport the sheet from the carry-in path to the first collection tray; and a second transport path branched from the carry-in path and having a branch roller to transport the transported sheet to the second collection tray. The relay roller shifts the sheet in a direction crossing the transport direction while a front end of the sheet enters the first transport path or the second transport path, and arrives at the carry-in roller or the branch roller.

A sheet processing apparatus arranged in a space between an image reading section for reading an image and an image formation section for forming an image on a sheet includes a carry-in path guiding a sheet from a carry-in entrance; a relay roller provided in the carry-in path to relay and transport the sheet; a first transport path positioned on a downstream side of the relay roller and having a carry-in roller to transport the sheet from the carry-in path to the first collection tray; and a second transport path branched from the carry-in path and having a branch roller to transport the transported sheet to the second collection tray. The relay roller shifts the sheet in a direction crossing the transport direction while a front end of the sheet enters the first transport path or the second transport path, and arrives at the carry-in roller or the branch roller.

A sheet thickness detector incorporated in a sheet conveyor and/or an image forming apparatus includes multiple first rollers aligned in a direction perpendicular to a sheet conveying direction, multiple second rollers facing the respective first rollers, a first roller shaft supporting two first rollers, at least one second roller shaft supporting rollers other than the two first rollers, at least one third roller shaft to support at least three second rollers, a first roller shaft holder supporting the first roller shaft to move from the at least one third roller shaft in a contact/separation direction, a biasing member biasing the first roller shaft toward at least one third roller shaft, and a displacement amount detector detecting an amount of displacement of the first roller shaft. A thickness of a sheet between the first and second rollers is detected based on a detection result by the displacement amount detector.

A sheet thickness detector incorporated in a sheet conveyor and/or an image forming apparatus includes multiple first rollers aligned in a direction perpendicular to a sheet conveying direction, multiple second rollers facing the respective first rollers, a first roller shaft supporting two first rollers, at least one second roller shaft supporting rollers other than the two first rollers, at least one third roller shaft to support at least three second rollers, a first roller shaft holder supporting the first roller shaft to move from the at least one third roller shaft in a contact/separation direction, a biasing member biasing the first roller shaft toward at least one third roller shaft, and a displacement amount detector detecting an amount of displacement of the first roller shaft. A thickness of a sheet between the first and second rollers is detected based on a detection result by the displacement amount detector.