A portable scanner includes a housing, a transmitting path, a scanning unit and a transmission module. The transmitting path longitudinally penetrates through two opposite sides of the housing. One side of the transmitting path forms a first channel, and the other side of the transmitting path forms a second channel. The scanning unit is arranged in the transmitting path and partially projects into the first channel. The transmission module is arranged in the transmitting path and partially projects into the first channel. The transmission module is in contact with the scanning unit. The transmission module includes a transmission roller. The scanning unit and the transmission roller are disposed to two facing sides of the transmitting path along an up-down direction. The scanning unit is disposed on and contacts with the transmission roller in the transmitting path.

A portable scanner includes a housing, a transmitting path, a scanning unit and a transmission module. The transmitting path longitudinally penetrates through two opposite sides of the housing. One side of the transmitting path forms a first channel, and the other side of the transmitting path forms a second channel. The scanning unit is arranged in the transmitting path and partially projects into the first channel. The transmission module is arranged in the transmitting path and partially projects into the first channel. The transmission module is in contact with the scanning unit. The transmission module includes a transmission roller. The scanning unit and the transmission roller are disposed to two facing sides of the transmitting path along an up-down direction. The scanning unit is disposed on and contacts with the transmission roller in the transmitting path.

An image inspection apparatus includes: an illumination part that emits light on an inspection target; a reading part that is arranged with, in one or more dimensions, elements that detect light reflected by the inspection target, the reading part reading an entire width of the inspection target; and a hardware processor that inspects a characteristic of the inspection target, wherein a light guide member is provided at a position where light regularly reflected by the inspection target passes, the light guide member is arranged to allow an optical path of light incident on the reading part via the light guide member to be parallel to an optical path of light incident on the reading part without via the light guide member, and the hardware processor inspects a gloss distribution of the inspection target, and inspects a density distribution of the inspection target.

An image scanning device includes a linear light source to illuminate a linear illumination position of a scan target with light, a lens body, and a sensor. The linear light source includes a light guide, a scatterer, an emitter, a stepped portion, and a light-shielding member. The stepped portion is formed, from the end surface of the transparent body along the main scan direction, on a side of the light guide that is opposite to the illumination position side of the light guide. The light-shielding member covers a portion of the emitter of the light guide, the portion including the end surface of the transparent body, and extends beyond the stepped portion in the main scan direction and has an end portion that is located out of a scan range of the sensor in the main scan direction.

An image inspection apparatus includes: an illumination part that emits light on an inspection target; a reading part that is arranged with, in one or more dimensions, elements that detect light reflected by the inspection target, the reading part reading an entire width of the inspection target; and a hardware processor that inspects a characteristic of the inspection target, wherein a light guide member is provided at a position where light regularly reflected by the inspection target passes, the light guide member is arranged to allow an optical path of light incident on the reading part via the light guide member to be parallel to an optical path of light incident on the reading part without via the light guide member, and the hardware processor inspects a gloss distribution of the inspection target, and inspects a density distribution of the inspection target.

An image scanning device includes a linear light source to illuminate a linear illumination position of a scan target with light, a lens body, and a sensor. The linear light source includes a light guide, a scatterer, an emitter, a stepped portion, and a light-shielding member. The stepped portion is formed, from the end surface of the transparent body along the main scan direction, on a side of the light guide that is opposite to the illumination position side of the light guide. The light-shielding member covers a portion of the emitter of the light guide, the portion including the end surface of the transparent body, and extends beyond the stepped portion in the main scan direction and has an end portion that is located out of a scan range of the sensor in the main scan direction.

A light emitting device includes a light-guide member that extends in one direction, a light emitting element that radiates light onto an end surface of the light-guide member, a reflective member that extends in the one direction and reflects, while holding the light-guide member, light that is emitted from a surface of the light-guide member, and a housing that accommodates the reflective member and includes a holding unit, the holding unit being configured to hold the reflective member at an accommodating position of the reflective member and configured to allow the reflective member to be released from a state of being held when the reflective member is bent in a crossing direction that crosses the one direction.

An image reading apparatus, includes an image sensor, a drive mechanism configured to cause the image sensor to move in a first direction and a second direction opposite to the first direction, a reference plate, and a control unit configured to execute a first reading method of detecting a first reference position by driving the image sensor in the first direction and reading the reference plate, thereafter reading a document by driving the image sensor in the first direction, and a second reading method of detecting a second reference position by driving the image sensor in the second direction and reading the reference plate, and thereafter reading a document by driving the image sensor in the second direction.

A light emitting device includes a light-guide member that extends in one direction, a light emitting element that radiates light onto an end surface of the light-guide member, a reflective member that extends in the one direction and reflects, while holding the light-guide member, light that is emitted from a surface of the light-guide member, and a housing that accommodates the reflective member and includes a holding unit, the holding unit being configured to hold the reflective member at an accommodating position of the reflective member and configured to allow the reflective member to be released from a state of being held when the reflective member is bent in a crossing direction that crosses the one direction.

An image reading apparatus, includes an image sensor, a drive mechanism configured to cause the image sensor to move in a first direction and a second direction opposite to the first direction, a reference plate, and a control unit configured to execute a first reading method of detecting a first reference position by driving the image sensor in the first direction and reading the reference plate, thereafter reading a document by driving the image sensor in the first direction, and a second reading method of detecting a second reference position by driving the image sensor in the second direction and reading the reference plate, and thereafter reading a document by driving the image sensor in the second direction.