Abstract: An inkjet recording device includes a conveyance unit, a carriage, one or a plurality of ink heads, a pre-processing head, and a post-processing head. The conveyance unit is configured to convey a recording medium in a conveyance direction. The carriage is configured to reciprocate in a main scanning direction intersecting the conveyance direction. The plurality of ink heads is located on the carriage and each eject an ink. The pre-processing head is arranged upstream of the plurality of ink heads in the conveyance direction and ejects a non-colored pre-processing solution. The post-processing head is arranged downstream of the plurality of ink heads in the conveyance direction and ejects a non-colored post-processing solution. The plurality of ink heads includes a plurality of same-color ink heads arranged to align in the conveyance direction to eject a same-color ink.

Abstract: An inkjet recording device includes a conveyance unit, a carriage, a plurality of ink head lines, a preprocessing head, and a postprocessing head. The preprocessing head ejects a preprocessing solution. The postprocessing head ejects a postprocessing solution. In a case where a head arranged closest to one end in a main scanning direction is defined as a one-end side head, a head arranged closest to the other end is defined as an other-end side head, a distance from the one-end side head to the other-end side head in the main scanning direction is defined as LC, a distance from the one-end side head to the preprocessing head in the main scanning direction is defined as B1, and a distance from the one-end side head to the postprocessing head in the main scanning direction is defined as B2, a relationship of ½?(B1+B2)/LC?3/2 is satisfied.

Abstract: An inkjet recording device includes a conveyance unit, a carriage, one or a plurality of ink head lines, and a processing head. The processing head includes a preprocessing head arranged on an upstream side of the one or plurality of ink head lines in the conveyance direction and configured to eject a non-coloring preprocessing solution. In a case where a head arranged closest to one end in the main scanning direction is defined as a one-end side head, a head arranged closest to the other end is defined as an other-end side head, a distance from the one-end side head to the other-end side head in the main scanning direction is defined as LC, and a distance from the one-end side head to the preprocessing head in the main scanning direction is defined as B1, a relationship of |(B1?LC/2)|/LC?1/4 is satisfied.

Abstract: An inkjet textile printing apparatus that forms an image in an image formation area of a textile printing target includes a pretreatment head that ejects a pretreatment liquid toward the image formation area, a recording head that ejects an inkjet ink toward the image formation area, and a controller that controls a time interval X from ejection of the pretreatment liquid toward the image formation area by the pretreatment head to ejection of the inkjet ink toward the image formation area by the recording head. The controller performs control so that the time interval X when the textile printing target is made of a specific material is shorter than the time interval X when the textile printing target is made of a material other than the specific material. The specific material is a napped material, a wool material, or an animal hair material.

Abstract: An inkjet recording device includes a conveyance unit, a carriage, ink heads, and a plurality of processing heads. The conveyance unit conveys a recording medium in a predetermined conveyance direction. The carriage reciprocates in a main scanning direction intersecting the conveyance direction. The ink heads are mounted on the carriage so as to be aligned in the main scanning direction, and eject ink for image formation. The processing heads are mounted on the carriage and eject a non-coloring processing solution. The plurality of processing heads are arranged side by side in the main scanning direction at positions different from the ink head in the conveyance direction.

Abstract: An image reading device includes transparent plate member, reading portion, support member, and adjustment mechanism. The transparent plate member is an elongated plate extending in a second direction perpendicular to a first direction, and is in contact with a reading surface of a document sheet when the document sheet is moved in the first direction during an automatic document sheet reading. The reading portion is disposed below the transparent plate member. The support member supports a lower surface of the transparent plate member at two support points separated in the second direction. The adjustment mechanism biases an extension end portion, extending outward from one of the support points, of the support member in a downward direction opposite to the supporting direction of the support member, and adjusts a distance between the transparent plate member and the reading portion by changing a biasing force applied to the extension end portion.

Abstract: A rod-shaped light guide operable to guide light entering a lateral end surface thereof to exit through a surface thereof is provided with: a recess in one lateral end thereof, having a predetermined depth in a longitudinal direction thereof, a bottom of the recess forming the lateral end surface; a positioning boss extending in the longitudinal direction from the one lateral end and inserted into a positioning hole in a substrate with a light source; and an engagement portion formed at the one lateral end to engage the substrate positioned by the positioning boss to the one lateral end so that a front surface of the substrate can abut on the one lateral end and the light source can be accommodated in the recess while being kept at a certain distance from the lateral end surface, the positioning boss and the engagement portion being formed integrally with the light guide.

Abstract: An image reading device includes transparent plate member, reading portion, support member, and adjustment mechanism. The transparent plate member is an elongated plate extending in a second direction perpendicular to a first direction, and is in contact with a reading surface of a document sheet when the document sheet is moved in the first direction during an automatic document sheet reading. The reading portion is disposed below the transparent plate member. The support member supports a lower surface of the transparent plate member at two support points separated in the second direction. The adjustment mechanism biases an extension end portion, extending outward from one of the support points, of the support member in a downward direction opposite to the supporting direction of the support member, and adjusts a distance between the transparent plate member and the reading portion by changing a biasing force applied to the extension end portion.

Abstract: A rod-shaped light guide operable to guide light entering a lateral end surface thereof to exit through a surface thereof is provided with: a recess in one lateral end thereof, having a predetermined depth in a longitudinal direction thereof, a bottom of the recess forming the lateral end surface; a positioning boss extending in the longitudinal direction from the one lateral end and inserted into a positioning hole in a substrate with a light source; and an engagement portion formed at the one lateral end to engage the substrate positioned by the positioning boss to the one lateral end so that a front surface of the substrate can abut on the one lateral end and the light source can be accommodated in the recess while being kept at a certain distance from the lateral end surface, the positioning boss and the engagement portion being formed integrally with the light guide.

Abstract: A light guide includes a main body, an input surface, an output surface, a reflecting surface, a first diffusing portion and a second diffusing portion. The main body is guiding light. The light is inputted the input surface of the main body. The light is emitted from the output surface in a direction intersecting with the longitudinal direction. The reflecting surface is provided on the main body and opposite to the output surface. The first diffusing portion is formed on the reflecting surface closer to the input surface. The second diffusing portion is formed on the reflecting surface closer to a side opposite to the input surface. The first and the second diffusing portions have a first and a second length respectively in a direction orthogonal to the longitudinal direction, and the first length is longer than the second length.

Abstract: A light guide device 31c is provided with a plurality of protruding portions 31c4 and 31c5 that protrude in a light emission direction, and entire end surfaces of these protruding portions 31c4 and 31c5 that face in the light emission direction form emission end surfaces 31c2 and 31c3, and a diffusion component is installed on each of these emission end surfaces 31c2 and 31c3.

Abstract: The image reading apparatus includes an LED, a light guiding body, and a photoelectric conversion element. The light guiding body has a plurality of prisms for diffusing light. The plurality of prisms includes: at least one first prism that is disposed on an incident surface side in the main scanning direction; and at least one second prism that is disposed on an opposite end side to the incident surface side in the main scanning direction. In the first prism, an angle of a prism incident plane with respect to the main scanning direction is greater than an angle of a prism anti-incident plane with respect to the main scanning direction. In the second prism, an angle of a prism incident plane with respect to the main scanning direction is smaller than an angle of a prism anti-incident plane with respect to the main scanning direction.

Abstract: An image reading apparatus includes a light guide arranged between a light source and a document. The light guide has a light incident surface at a side of the light source, light from the light source, is incident, a first light emitting surface at a side of the document, a second light emitting surface different from the first light emitting surface, a first reflecting surface between the first and second light emitting surfaces, a second reflecting surface between the light incident surface and the second light emitting surface, and a third reflecting surface facing the second reflecting surface. The first reflecting surface reflects light toward the first light emitting surface. The second reflecting surface reflects light toward one of the second light emitting surface and the first and third reflecting surfaces. The third reflecting surface reflects light toward the second light emitting surface or the first reflecting surface.

Abstract: The image reading apparatus includes an LED, a light guiding body, and a photoelectric conversion element. The light guiding body has a plurality of prisms for diffusing light. The plurality of prisms includes: at least one first prism that is disposed on an incident surface side in the main scanning direction; and at least one second prism that is disposed on an opposite end side to the incident surface side in the main scanning direction. In the first prism, an angle of a prism incident plane with respect to the main scanning direction is greater than an angle of a prism anti-incident plane with respect to the main scanning direction. In the second prism, an angle of a prism incident plane with respect to the main scanning direction is smaller than an angle of a prism anti-incident plane with respect to the main scanning direction.

Abstract: An image reading device is provided. The image reading device suppresses uneven intensity of light emitted on a subject, by disposing a diffusion plate between the subject and a plurality of luminescence portions, and an image forming device that includes this image reading device. The image reading device includes an illumination portion that irradiates light onto a subject. The illumination portion includes: a plurality of LED's disposed at predetermined intervals in a main scanning direction; and an elliptical diffuser plate that is disposed between the subject and the plurality of LED's and diffuses light emitted by the plurality of LED's in a higher diffusion rate in the main scanning direction than in a sub-scanning direction.

Abstract: The present invention aims at providing an image reading device and an image forming apparatus including a light guiding body having a first emission surface and a second emission surface. A color copy machine includes a luminescence portion including: LEDs composed of a plurality of dot-shaped luminescence members disposed at predetermined intervals in a main scanning direction and/or an elongated luminescence member that is formed to extend in the main scanning direction; and a light guiding body that is disposed between the LEDs and an original, and has a light incidence portion disposed on a side to the LEDs and an emission portion disposed on a side to the original. The emission portion has a first emission surface and a second emission surface that is formed on a different plane from a plane including the first emission surface.

Abstract: The present invention is aimed at providing an image reading device that suppresses generation of a so-called edge shadow while suppressing uneven intensity of light emitted onto an original. A color copy machine 1 includes an illumination portion 347a that irradiates an original G with light. The illumination portion 347a includes a plurality of LEDs 501 disposed at predetermined intervals in a main scanning direction, an elliptical diffuser plate 507 that is disposed between the plurality of LEDs 501 and the original G and causes the light emitted by the plurality of LEDs 501 to diffuse, and a second reflection mirror 541B that reflects light, which is a portion of the light diffused by the elliptical diffuser plate 507 and not directly irradiated onto the original G, so as to irradiate the light onto the original G.

Abstract: An image reading apparatus includes a light guide arranged between a light source and a document. The light guide has a light incident surface at a side of the light source, light from the light source, is incident, a first light emitting surface at a side of the document, a second light emitting surface different from the first light emitting surface, a first reflecting surface between the first and second light emitting surfaces, a second reflecting surface between the light incident surface and the second light emitting surface, and a third reflecting surface facing the second reflecting surface. The first reflecting surface reflects light toward the first light emitting surface. The second reflecting surface reflects light toward one of the second light emitting surface and the first and third reflecting surfaces. The third reflecting surface reflects light toward the second light emitting surface or the first reflecting surface.

Abstract: A light guide device 31c is provided with a plurality of protruding portions 31c4 and 31c5 that protrude in a light emission direction, and entire end surfaces of these protruding portions 31c4 and 31c5 that face in the light emission direction form emission end surfaces 31c2 and 31c3, and a diffusion component is installed on each of these emission end surfaces 31c2 and 31c3.

Abstract: A light-collective member (142) for collecting a light outputted from a light source (140), which irradiates a light toward a document surface, toward a sub-scanning direction is provided in front of the light source (140). An illuminating portion which is so formed that each of opposite end surfaces (170, 172) in the main scanning direction of the light-collective member (142) has an obtuse angle with respect to a bottom surface (174) facing the light source (140).