# US 10,484,567 B2 · Image acquiring apparatus and method and image forming apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,484,567 B2 - Document ID: US10484567B2 - Status: Granted - Kind: B2 - Application number: 15/091,022 - Filed: 2016-04-05 - Published: 2017-04-06 - Granted: 2019-11-19 - Earliest claimed: 2015-10-06 - Assignees: HP Printing Korea Co., Ltd. - Applicants: HP Printing Korea Co., Ltd. - Inventors: Kyoung-Youn Lee; Jung-Han Kim - Web page: https://patentgrep.com/patent/US10484567B2 ## CPC - H04N 1/2032: {of two pictures corresponding to two sides of a single medium (refeeding a sheet for double-sided scanning H04N1/00572)} - H04N 1/121: {Feeding arrangements (transporting sheets to or from the scanning position H04N1/0057; control or error compensation of sub-scanning velocity H04N1/0473)} - H04N 1/17: the scanning speed being dependent on content of picture - H04N 1/40062: {Discrimination between different image types, e.g. two-tone, continuous tone} - H04N 1/4095: {Correction of errors due to scanning a two-sided document, i.e. show-through correction} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract Disclosed is an image acquiring method. The image acquiring method includes receiving an instruction to acquire a one-side image to acquire an image on a first side of a document; obtaining a penetrated image of the first side of the document, which is seen on the second side, with a second image sensor for obtaining an image on a second side of the document, while the document is being fed; obtaining an image on the first side of the document with a first image sensor for obtaining an image on the first side of the document, while the document is being fed; and processing the image on the first side based on the penetrated image of the first side. ## Claims ### Claim 1 An image acquiring method by an image acquiring apparatus, the method comprising: in response to an instruction to acquire a single-side image formed on a first surface of a document, acquiring, by a first image sensor, the single-side image and acquiring, by a second image sensor as a penetrated image sensor, a penetrated image of same single-side image shown through a second surface of the document, while the document is being fed; and image processing, by a processor, the single-side image, based on the acquired penetrated image of the same single-side image shown through the second surface of the document, wherein, the acquiring of the penetrated image includes determining whether the penetrated image is a text image or a picture image, and the image processing of the single-side image includes sharpening the single-side image when the penetrated image is the text image. ### Claim 2 (depends on 1) The image acquiring method of claim 1, wherein the image processing of the single-side image comprises blurring the single-side image when the penetrated image is the picture image. ### Claim 3 (depends on 1) The image acquiring method of claim 1, wherein the acquiring of the penetrated image comprises determining whether the penetrated image is a monochrome image or a color image. ### Claim 4 (depends on 3) The image acquiring method of claim 3, wherein the acquiring of the single-side image comprises: changing line times corresponding to the first image sensor to mono image line times when the penetrated image is a monochrome image. ### Claim 5 (depends on 3) The image acquiring method of claim 3, wherein the acquiring of the single-side image comprises: changing line times corresponding to the first image sensor to color image line times when the penetrated image is a color image. ### Claim 6 An image acquiring apparatus comprising: a memory; and a processor coupled to the memory, the processor to, in response to an instruction to acquire a single-side image formed on a first surface of a document, control acquiring, by a first image sensor, the single-side image and acquire, by a second image sensor as a penetrated image sensor, a penetrated image of same single-side image shown through a second surface of the document, while the document is being fed; and perform an image process on the single-side image, based on the acquired penetrated image of the same single-side image shown through the second surface of the document, wherein, the acquiring of the penetrated image includes determining whether the penetrated image is a text image or a picture image, and the image processing of the single-side image includes sharpening the single-side image when the penetrated image is the text image. ### Claim 7 (depends on 6) The image acquiring apparatus of claim 6, wherein the processor is to perform the image process to blur the single-side image when the penetrated image of the image is a picture image. ### Claim 8 (depends on 6) The image acquiring apparatus of claim 6, wherein the processor is to determine whether the penetrated image is a monochrome image or a color image. ### Claim 9 (depends on 8) The image acquiring apparatus of claim 8, wherein the processor is to change line times corresponding to the first image sensor to mono image line times when the penetrated image of the single-side image is a monochrome image. ### Claim 10 (depends on 8) The image acquiring apparatus of claim 8, wherein the processor is to change line times corresponding to the first image sensor to color image line times when the penetrated image is a color image. ### Claim 11 (depends on 6) The image acquiring apparatus of claim 6, further comprising: a reflector to reflect light which is emitted from the penetrated image sensor and penetrates the document. ### Claim 12 (depends on 11) The image acquiring apparatus of claim 11, wherein the reflector comprises a first reflecting part and a second reflecting part, the first reflecting part having higher optical reflectivity than the second reflecting part. ### Claim 13 (depends on 12) The image acquiring apparatus of claim 12, wherein the apparatus includes a reflector moving module to, move the reflector to align the first reflecting part with the penetrated image sensor when the instruction is to acquire the single-side image, and move the reflector to align the second reflecting part with the penetrated image sensor when the instruction is to acquire a double-side image formed on the first and second surfaces of the document. ### Claim 14 (depends on 12) The image acquiring apparatus of claim 12, wherein the apparatus includes a sensor moving module to, move the penetrated image sensor to align the first reflecting part with the penetrated image sensor when the instruction is to acquire the single-side image, and move the pentrated image sensor to align the second reflecting part with the penetrated image sensor when the instruction is to acquire a double-side image formed on the first and second surfaces of the document. ### Claim 15 An image forming apparatus comprising: a memory; and a processor coupled to the memory, the processor to, in response to an acquisition instruction to acquire a single-side image formed on a first surface of a document, control acquiring, by a first image sensor, the single-side image and acquire, by a second image sensor as a penetrated image sensor, a penetrated image of same single-side image shown through a second surface of the document, while the document is being fed; print the single-side image acquired by the first image sensor onto a print medium; and perform an image process on the single-side image, based on the acquired penetrated image of the same single-side image shown through the second surface of the same document, and print the image processed single-side image on the print medium, wherein, the acquiring of the penetrated image includes determining whether the penetrated image is a text image or a picture image, and the image processing of the single-side image includes sharpening the single-side image when the penetrated image is the text image. ### Claim 16 (depends on 15) The image acquiring apparatus of claim 15, wherein the processor is to, determine whether the penetrated image is a monochrome image or a color image, change line times corresponding to the first image sensor to mono image line times when the penetrated image of the single-side image is a monochrome image, and change line times corresponding the first image sensor to color image line times when the penetrated image is a color image.