# US 2017/0195507 A1 · Image reading apparatus and image forming apparatus comprising same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0195507 A1 - Document ID: US20170195507A1 - Status: Published application - Kind: A1 - Application number: 15/313,886 - Filed: 2015-02-27 - Published: 2017-07-06 - Earliest claimed: 2014-06-26 - Assignees: KYOCERA Document Solutions Inc. - Applicants: KYOCERA Document Solutions Inc. - Inventors: Takashi KAINUMA; Shunsuke YAMASAKI - Web page: https://patentgrep.com/patent/US20170195507A1 ## CPC - H04N 1/00557: {Connection or assembly of components or elements (H04N1/00538 takes precedence)} - G03B 27/62: Holders for the original (G03B27/53 takes precedence {; for electrophotographic copiers G03G15/60}) - G03G 15/605: {Holders for originals or exposure platens (for photographic purposes in general G03B)} - H04N 1/00: Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof - H04N 1/00551: {Top covers or the like} - H04N 1/00554: {Latches or hinges therefor} - H04N 1/10: using flat picture-bearing surfaces {(H04N1/113, H04N1/195 take precedence)} - G03G 2215/00185: original at rest - H04N 1/00519: {Constructional details not otherwise provided for, e.g. housings, covers} - H04N 1/107: with manual scanning - H04N 2201/0081: Image reader (H04N2201/0091 - H04N2201/0094 take precedence) - H04N 2201/0422: Media holders, covers, supports, backgrounds; Arrangements to facilitate placing of the medium (H04N2201/0406 - H04N2201/0412, H04N2201/0434 take precedence) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) - G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY ## Abstract An image reading apparatus (6) includes a document placing table (6a) to an upper surface of which a contact glass (25) is fixed, and a document pressing device (24) supported at an end of the document placing table (6a) to be openable/closable via a hinge portion, and having, on its back surface side, a document presser (30) that presses a document placed on the contact glass (25). The document pressing device (24) includes a light transmission window (31) transmitting light in a front-surface-to-back-surface direction of the document pressing device (24). The light transmission window (31) is disposed at a position not overlapping with the contact glass (25) when the document pressing device (24) is at the closure position, and when the document pressing device (24) has moved in an opening direction from the closure position, light that has passed through the light transmission window (31) reaches the contact glass (25). ## Claims ### Claim 1 (canceled) ### Claim 2 (depends on 3) The image reading apparatus according to claim 3, wherein the light transmission window is formed near the hinge portion, at a position that does not overlap with the document presser. ### Claim 3 An image reading apparatus comprising: a document placing table to an upper surface of which a contact glass is fixed; and a document pressing device which is supported at an end of the document placing table to be openable/closable via a hinge portion, and has, on a back surface side thereof, a document presser that presses a document placed on the contact glass, the image reading apparatus reading a document placed on the contact glass, with the document pressing device disposed at a closure position where the document presser abuts the contact glass, wherein a light transmission window which transmits light in a front-surface-to-back-surface direction of the document pressing device is formed in the document pressing device, the light transmission window is disposed at a position that does not overlap with the contact glass when the document pressing device is at the closure position. and when the document pressing device has moved in an opening direction from the closure position, light that has passed through the light transmission window reaches the contact glass, and the light transmission window comprises a light transmissive member that is fitted in the light transmission window, that refracts light incident thereon from a front surface side of the document pressing device in a direction approaching the contact glass, and that causes the light to be emitted through a back surface side of the document pressing device. ### Claim 4 (depends on 2) The image reading apparatus according to claim 2, wherein the light transmission window is formed in a central part of the document pressing device in a width direction of the document pressing device which is a direction perpendicular to an opening/closing direction of the document pressing device. ### Claim 5 An image reading apparatus comprising: a document placing table to an upper surface of which a contact glass is fixed; and a document pressing device which is supported at an end of the document placing table to be openable/closable via a hinge portion. and has, on a back surface side thereof, a document presser that presses a document placed on the contact glass, the image reading apparatus reading a document placed on the contact glass, with the document pressing device disposed at a closure position where the document presser abuts the contact glass, wherein a light transmission window which transmits light in a front-surface-to-back-surface direction of the document pressing device is formed in the document pressing device, the light transmission window is disposed at a position that does not overlap with the contact glass when the document pressing device is at the closure position, and when the document pressing device has moved in an opening direction from the closure position, light that has passed through the light transmission window reaches the contact glass, the light transmission window is formed in a central part of the document pressing device in a width direction of the document pressing device which is a direction perpendicular to an opening/closing direction of the document pressing device, at a position that does not overlap with the document presser and close to the hinge portion, and the light transmission window comprises a light transmissive member that is fitted in the light transmission window, that refracts light incident thereon from a front surface side of the document pressing device in directions spread in a width direction of the document placing table, and that causes the light to be emitted through a back surface side of the document pressing device. ### Claim 6 (canceled) ### Claim 7 (depends on 3) An image forming apparatus comprising the image reading apparatus according to claim 3.