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US-20260129130-A1 - PAPER TYPE IDENTIFICATION APPARATUS AND IMAGE FORMING APPARATUS

US20260129130A1US 20260129130 A1US20260129130 A1US 20260129130A1US-20260129130-A1

Abstract

A paper type identification apparatus includes a passage configured to allow a sheet to be manually inserted thereinto, a reading sensor configured to read a surface of the sheet inserted into the passage and a controller configured to output a notification after reading a first surface of the sheet by the reading sensor. The notification is a notification to urge a user to read a second surface opposite to the first surface of the sheet by the reading sensor, and determine a type of the sheet based on a reading result of the first surface by the reading sensor and a reading result of the second surface by the reading sensor.

Inventors

  • Kazusa Morimoto

Assignees

  • CANON KABUSHIKI KAISHA

Dates

Publication Date
20260507
Application Date
20260106
Priority Date
20220330

Claims (13)

  1. 1 . A paper type identification apparatus comprising: a passage configured to allow a sheet to be manually inserted thereinto; a reading sensor configured to read a surface of the sheet inserted into the passage; and a controller configured to: output a notification after reading a first surface of the sheet by the reading sensor, the notification being a notification to urge a user to read a second surface opposite to the first surface of the sheet by the reading sensor; and determine a type of the sheet based on a reading result of the first surface by the reading sensor and a reading result of the second surface by the reading sensor.
  2. 2 . The paper type identification apparatus according to claim 1 , further comprising a display to display the type of the sheet.
  3. 3 . The paper type identification apparatus according to claim 1 , wherein the controller is configured to: perform a first mode and a second mode, the first mode being a mode in which the type of the sheet is determined based on both the reading result of the first surface by the reading sensor and the reading result of the second surface by the reading sensor, and the second mode being a mode in which the type of the sheet is determined based on the reading result of the first surface by the reading sensor; and output, in the first mode, after reading the first surface of the sheet by the reading sensor, the notification to urge the user to read the second surface of the sheet by the reading sensor.
  4. 4 . The paper type identification apparatus according to claim 3 , wherein the controller is configured to: not urge, in the second mode, after reading the first surface of the sheet by the reading sensor, the user to read the second surface of the sheet by the reading sensor and; determine the type of the sheet based on the reading result of the first surface by the reading sensor.
  5. 5 . The paper type identification apparatus according to claim 3 , wherein the controller is configured to: receive user instruction information to instruct to perform the first mode; and select the first mode based on the user instruction information.
  6. 6 . The paper type identification apparatus according to claim 3 , further comprising a display to display a screen to allow the user to select whether to perform the first mode, wherein the display is configured to display the screen after reading the first surface of the sheet by the reading sensor.
  7. 7 . The paper type identification apparatus according to claim 1 , further comprising a sheet sensor configured to detect the sheet that has arrived at a detection position on downstream of the reading sensor in an insertion direction in which the sheet is inserted, wherein the controller is configured to acquire the reading result of the first surface that is read by the reading sensor after detecting the sheet by the sheet sensor.
  8. 8 . An image forming apparatus for forming an image on a sheet based on an image forming condition, the image forming apparatus comprising: a passage configured to allow a sheet to be manually inserted thereinto; a reading sensor configured to read a surface of the sheet inserted into the passage; a display; and a controller configured to: control the display to display a screen after reading a first surface of the sheet by the reading sensor, the screen being a screen to urge a user to read a second surface opposite to the first surface of the sheet; control the display to display a plurality of candidates of a type of the sheet based on a reading result of the first surface by the reading sensor and a reading result of the second surface by the reading sensor; and control the image forming conditions based on the type of the sheet selected from among the plurality of candidates displayed on the display.
  9. 9 . The image forming apparatus according to claim 8 , wherein the controller is configured to: perform a first mode and a second mode, the first mode being a mode in which the controller controls the display to display the plurality of candidates for the type of the sheet based on both the reading result of the first surface by the reading sensor and the reading result of the second surface by the reading sensor, and the second mode being a mode in which the controller controls the display to display the plurality of candidates for the type of the sheet based on the reading result of the first surface by the reading sensor; control, in the first mode, after reading the first surface of the sheet by the reading sensor, the display to display the image.
  10. 10 . The image forming apparatus according to claim 9 , wherein the controller is configured to: not display, in the second mode, after reading the first surface of the sheet by the reading sensor, the screen; and control the display to display the plurality of the candidates for the type of the sheet based on the reading result of the first surface by the reading sensor.
  11. 11 . The image forming apparatus according to claim 9 , wherein the controller is configured to: receive user instruction information to instruct to perform the first mode; and select the first mode based on the user instruction information.
  12. 12 . The image forming apparatus according to claim 9 , wherein the controller is configured to control the display to display a selection screen to allow the user to select whether to perform the first mode after reading the first surface of the sheet by the reading sensor.
  13. 13 . The image forming apparatus according to claim 8 , further comprising a sheet sensor configured to detect the sheet that has arrived at a detection position on downstream of the reading sensor in an insertion direction in which the sheet is inserted, wherein the controller is configured to acquire the reading result of the first surface that is read by the reading sensor after detecting the sheet by the sheet sensor.

Description

BACKGROUND OF THE INVENTION Field of the Invention The present disclosure relates to a paper type identification apparatus which can identify a type of a sheet and an image forming apparatus having the paper type identification apparatus. Description of the Related Art Electrophotographic image forming apparatuses such as a copying machine, a printer, a facsimile, and a multifunction apparatus, form an image on a sheet conveyed in a conveyance path by performing each process of electrification, exposure, development, transfer, and fixing. There are various types of the sheets which can be used for image forming. The sheets differ in characteristics (physical properties), such as sheet thickness, a degree of smoothness, basis weight, and surface property, according to the type of the sheet. The optimal operation condition in each process of image forming changes according to the physical properties of the sheet to be used. Therefore, the image forming apparatus needs to change the conditions of operations, such as an adjustment value of each process, based on the type of sheet. Upon using the image forming apparatus, a user registers the type of the sheet to be used previously. However, in a case where the registered type of the sheet is incorrect, the image forming apparatus cannot form images under proper operating conditions. In this case, the normal image cannot be formed on the sheet. For example, abnormalities arise in the image formed on a sheet due to occurrence of jam, poor fixing, and a poor image density, etc. Japanese Patent Application Laid-open No. 2020-123835 describes an image forming apparatus which identifies a type of a sheet by a measurement device (media sensor) which measures a feature amount of the sheet to perform image forming. The measurement device notifies the image forming apparatus of the measurement result of the sheet. The image forming apparatus specifies a paper profile that matches the measurement result, among a plurality of previously stored paper profiles. Therefore, the incorrect setting of the type of sheet is suppressed. In some measurement devices which measure the feature amount of the sheet manually inserted by a user, only one side of the sheet is measured. In this case, only the feature amount of one side of the sheet is measured. It is noted that feature amounts of front surfaces (print surfaces) of the sheets are previously registered in the paper profile, and the image forming apparatus identifies the paper type by reading the front surface of the sheet when measuring the sheet by the measurement device. However, as to a sheet (for example, a recycled paper sheet) in which the feature amount of a front surface and that of a back surface differ from each other and the appearance of the front surface and the back surface is the same, there may be an increased risk of mistakenly measuring the front and back surfaces. The difference in the feature amount of the front surface and the back surface may cause incorrect detection of the paper type. SUMMARY OF THE INVENTION A paper type identification apparatus according to one aspect of the present disclosure includes: a passage configured to allow a sheet to be manually inserted thereinto; a reading sensor configured to read a surface of the sheet inserted into the passage; and a controller configured to: output a notification after reading a first surface of the sheet by the reading sensor, the notification being a notification to urge a user to read a second surface opposite to the first surface of the sheet by the reading sensor; and determine a type of the sheet based on a reading result of the first surface by the reading sensor and a reading result of the second surface by the reading sensor. An image forming apparatus for forming an image on a sheet based on an image forming condition according to another aspect of the present disclosure includes: a passage configured to allow a sheet to be manually inserted thereinto; a reading sensor configured to read a surface of the sheet inserted into the passage; a display; and a controller configured to: control the display to display a screen after reading a first surface of the sheet by the reading sensor, the screen being a screen to urge a user to read a second surface opposite to the first surface of the sheet; control the display to display a plurality of candidates of a type of the sheet based on a reading result of the first surface by the reading sensor and a reading result of the second surface by the reading sensor; and control the image forming conditions based on the type of the sheet selected from among the plurality of candidates displayed on the display. Further features of the present invention will become apparent from the following description of exemplary embodiments (with reference to the attached drawings). BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration view of an image forming apparatus. FIG. 2A and FIG. 2B are enlarged views of a fix