Recording media deciding apparatus, image forming apparatus and recording media deciding method
A technology of recording medium and judging device, which is applied in the directions of transportation and packaging, thin material handling, and separation of objects, etc., can solve the problems of limited accuracy of recording medium judgment, uneven light intensity, uneven intensity, etc.
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no. 1 approach
[0063] figure 2 It is a diagram showing the arrangement and structure of the recording medium judging device 100 according to the first embodiment. like figure 2 As shown, the light irradiation unit 102 is disposed in contact with the uppermost surface 210A of the first surface of the bundle 210 of recording media P. As shown in FIG.
[0064] The light irradiation unit 102 includes: a light source 102B for irradiating light; and a light shielding unit 102A for limiting an irradiation range of the light irradiated by the light source 102B to the bundle 210 of recording media P.
[0065] The light shielding portion 102A has an inner space penetrating the bottom surface, and the light source 102B is provided in the inner space.
[0066] The light shielding portion 102A has a slit 102C on the bottom surface through which light passes. The light irradiated from the light source 102B is reflected inside the light shielding portion 102A, is irradiated through the slit 102C, and ...
no. 2 approach
[0120] The configuration of the recording medium judging device 100 according to the second embodiment is the same as that of the first embodiment except for the light source of the light irradiation unit 102 .
[0121] Figure 16 It is a diagram showing the arrangement and structure of the recording medium judging device 100 according to the second embodiment. like Figure 16 As shown, the recording medium judging apparatus 100 has a plurality of point light sources 102D instead of linear light sources.
[0122] The point light sources 102D can be selected from one or more types of incandescent lamps, LEDs, near-infrared LEDs, organic EL, and the like. The point light source 102D preferably contains near-infrared light. The reason is that the attenuation of near-infrared light by the recording medium is relatively slow.
[0123] Figure 17 is a diagram showing the arrangement of the point light source 102D. exist Figure 17 Among them, the curve 1701 represents the int...
no. 3 approach
[0130] The configuration of the recording medium judging device 100 according to the third embodiment is the same as that of the first embodiment except for the light source of the light irradiation unit 102 .
[0131] Figure 18It is a diagram showing the arrangement and structure of the recording medium judging device 100 according to the third embodiment. like Figure 18 As shown, the recording medium judging device 100 includes: a laser light source 102E; an optical fiber 102F, which guides the light emitted by the laser light source 102E; and a fixing device 102G, which arranges and fixes the optical fiber 102F in a straight line instead of a linear light source.
[0132] Figure 19 It is a sectional view of the vicinity of the optical fiber fixing device 102G. Figure 20 It is a figure which looked at the fixing device 102G of an optical fiber from the direction of the recording medium P.
[0133] like Figure 19 to Figure 20 As shown, laser light is irradiated towa...
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