An image forming apparatus, includes: an image former that forms an image on a sheet; an inspector that inspects an object; and a feed path that conveys the object to the inspector, wherein the feed path is installed to bypass the image former.

An image reading apparatus includes a medium mounting portion configured to mount a medium; a feeding means configured to feed a medium from the medium mounting portion; at least one edge guide each configured to regulate a corresponding one of at least one medium width direction edge of the medium having been mounted on the medium mounting portion; a reading means configured to read the medium and disposed on a further downstream side than the at least one edge guide in the medium feeding direction; and at least one medium detection means configured to detect the medium and disposed on a further downstream side than the at least one edge guide in the medium feeding direction and further outside in the medium width direction than at least one edge regulation position for the edge regulation by the at least one edge guide.

In a sheet feeder, an input passage has input and output ends and an input location. A first feeder module includes: a first input roller disposed on the input end; a first output roller disposed on the output end; and a first sensing device being disposed near the first input roller and generating a first signal transmitted to a processor upon sensing presence of a first medium. A second feeder module includes: a second input roller disposed on the input end; a second output roller disposed on the output end; and a second sensing device being disposed at the input location and generating a second signal transmitted to the processor upon sensing presence of a second medium. An image acquiring device acquires an image of the first or second medium. The processor controls enabled and disabled states of the first and second feeder modules. A control method of the processor is also provided.

An image reading device includes a turning unit, a hinge, and a reading unit having a reader that reads a sheet image. The hinge turns the turning unit which turns relative to the reading unit. The reader reads, through a reading unit reading glass, an image on a sheet placed on the reading glass. The turning unit includes a pressing plate, a conveying roller, a motor, and a communication unit. The pressing plate presses a sheet against the reading glass when the turning unit is at a position closing the reading glass. The motor rotates the conveying roller to convey a sheet. In a direction perpendicular to a turning axis line direction of the hinge, the motor is disposed on one side of the turning unit. The communication unit is disposed on the other side and receives data from outside of the image reading device.

An image reading apparatus includes a medium mounting portion configured to mount a medium; a feeding means configured to feed a medium from the medium mounting portion; at least one edge guide each configured to regulate a corresponding one of at least one medium width direction edge of the medium having been mounted on the medium mounting portion; a reading means configured to read the medium and disposed on a further downstream side than the at least one edge guide in the medium feeding direction; and at least one medium detection means configured to detect the medium and disposed on a further downstream side than the at least one edge guide in the medium feeding direction and further outside in the medium width direction than at least one edge regulation position for the edge regulation by the at least one edge guide.

An image processing apparatus includes a solenoid, a power supply switch element, a control device, a current value integrator circuit, a state determination circuit, and a cut-off circuit. The current value integrator circuit outputs an integral signal that increases in level, in response to an integral value of an operation current, when the operation current is conducted to the solenoid, and otherwise decreases in level. The state determination circuit maintains a state determination signal in an active state when the level of the integral signal exceeds a maximum level. The cut-off circuit conducts the operation current when the state determination signal in a negative state is input to a power supply line that extends to a circuit between the power supply switch element and the solenoid, and cuts off the operation current when the state determination signal in the active state is input to the power supply line.

Provided is a reading kit including a reading unit configured to read an image of an original being conveyed in a predetermined direction at a predetermined reading position, and a white reference sheet comprising a white reference portion to be read by the reading unit and an engaged portion to be engaged with a positioning member. The white reference portion being arranged at the predetermined reading position by engaging the engaged portion with the positioning member.

An image forming apparatus, includes: an image former that forms an image on a sheet; an inspector that inspects an object; and a feed path that conveys the object to the inspector, wherein the feed path is installed to bypass the image former.

An image reading apparatus includes a conveying unit configured to convey a document, a reading unit configured to read an image on the conveyed document, a measurement unit configured to measure a distance from an upper portion of a sheet feeding port for the document to an upper surface of the document, and a control unit configured to, according to the distance measured by the measurement unit, suspend the conveyance of the document by the conveying unit. According to a user operation for reading again the document of which the reading is suspended by the control unit, the conveying unit conveys the document and the reading unit reads the image on the document, and while the document of which the conveyance is suspended is conveyed again, the control unit does not suspend the conveyance of the document based on the distance measured by the measurement unit.

A reading device including a reader, a position reference member, and circuitry. The position reference member has a reference pattern along a first direction of the position reference member. The circuitry is configured to detect the reference pattern of the position reference member; determine coordinates of at least two pixels in the second direction, based on the detected reference pattern; calculate a first correction value based on the coordinates determined for the at least two pixels of the reader in the second direction; detect an outer shape and a position of an image pattern on the conveyed object based on data read by the reader; obtain a difference between an image of the conveyed object, of which a shape has been corrected, and an image of the conveyed object, of which a shape has not been correction; and set a second correction value based on the obtained difference.