Abstract: According to one embodiment, an image forming apparatus includes a conveying roller to convey sheets of different types along a conveyance path, a first sensor to detect a sheet being conveyed at a first position, a second sensor to detect the sheet being conveyed at a second position that is at a fixed distance downstream of the first position, a registration roller pair that is downstream of the second sensor, and a control unit. The control unit calculates a transit time for the sheet between the first position and the second position according detection results from the first and second sensors, and then sets a conveying distance for the sheet after the second position to be used for aligning the sheet against the registration roller pair based on the calculated transit time of the sheet.

Abstract: An image reading apparatus connectable to an image forming apparatus includes a feeding roller pair configured to nip and feed a sheet discharged from the image forming apparatus, a contact image sensor configured to read an image on a first surface of the sheet fed by the feeding roller pair, a light-transmissive plate provided opposed to the contact image sensor and having a light-transmission property, a first roller opposing the light-transmissive plate with a gap therebetween on a side opposite from the contact image sensor with respect to the light-transmissive plat, and a second roller positioned upstream of the first roller with respect to a sheet feeding direction and opposing the light-transmissive plate with a gap therebetween on the same side as the first roller.

Abstract: The present disclosure is drawn to aqueous ink compositions, methods of printing on offset coated print media, and printing systems. In one example, the aqueous ink compositions can include from 2 wt % to 5 wt % pigment, from 70 wt % to 95 wt % water, from 1 wt % to 10 wt % binder, from 0.1 wt % to 3 wt % non-ionic surfactant, from 1 wt % to 15 wt % humectant solvent including a hydrophilic group, and from 0.3 wt % to 4.5 wt % non-volatile glycol ether co-solvent having a boiling point of 220 C or greater.

Abstract: An image reading apparatus includes a conveying unit configured to convey a document, a reading unit configured to read an image on the conveyed document, a measurement unit configured to measure a distance from an upper portion of a sheet feeding port for the document to an upper surface of the document, and a control unit configured to, according to the distance measured by the measurement unit, suspend the conveyance of the document by the conveying unit. According to a user operation for reading again the document of which the reading is suspended by the control unit, the conveying unit conveys the document and the reading unit reads the image on the document, and while the document of which the conveyance is suspended is conveyed again, the control unit does not suspend the conveyance of the document based on the distance measured by the measurement unit.

Abstract: A control unit of an image reading apparatus determines, based on results of detection of an original document by a plurality of second detecting units, whether the original document will pass a position at which the original document is to be detected by a first detecting unit that is located downstream of the second detecting units and upstream of a reading unit. When it is determined that the original document will not pass a position at which the original document is to be detected by the first detecting unit, the control unit determines a timing for reading the original document by using the reading unit, relative to a time point at which the original document is detected by the second detecting units. The control unit causes the reading unit to read the original document at the determined reading timing.

Abstract: A printer includes a printing mechanism configured to print on a printing object held by a holder, a reciprocating mechanism configured to move the holder in a first direction and a second direction opposite to the first direction, and controller circuitry configured to control the printing mechanism and the reciprocating mechanism. When the controller circuitry executes a superimposed printing on the printing object, the controller circuitry causes the printing mechanism to execute a pre-printing process and a post-printing process that prints on the image printed by the pre-printing process while the holder is moved in the first direction from a waiting position, and the controller circuitry causes the reciprocating mechanism to stop a movement of the holder for a predetermined time period after the pre-printing process is terminated and the holder has returned to the waiting position.

Abstract: An image processing apparatus for decoloring a decolorable toner image formed on one or more sheets, includes an image processing unit comprising a controller and an image heating section, wherein the image heating section is selectively operable at a toner fixing temperature and an image decoloring temperature that is higher than the toner fixing temperature, a communication interface configured to communicate with an external decoloring device, and a user input section. The controller, upon receiving a request to decolor one or more sheets that is made through the user input section, determines which of the image heating section and the external decoloring device will be the first available to decolor the one or more sheets.

Abstract: An image erasing apparatus according to an embodiment includes a scanner that reads an image printed on a sheet with decolorable colorant, the image including a first owner information. A decoloring unit decolors the image printed on the sheet. An input device receives a second owner information. A controller identifies the first owner information included in the image read by the scanner, and determines whether the first owner information corresponds to the second owner information. Based on the determination, the controller selectively controls the decoloring unit to decolor the image.

Abstract: An image erasing method includes reading a sheet having an image printed thereon with decolorable colorant and an owner information image printed thereon with decolorable colorant. The method further includes identifying a first owner information based on the owner information image, and receiving a second owner information. The method further includes determining a correlation between a user corresponding to the first owner information and a user corresponding to the second owner information. The method further includes selectively controlling a decoloring unit to decolor the image and the owner information image based on the correlation.

Abstract: An image erasing apparatus comprises a reading unit configured to read a sheet having an image printed thereon with decolorable colorant and an owner information image printed thereon with decolorable colorant, and to identify a first owner information based on the owner information image. The apparatus further comprises a decoloring unit configured to decolor the sheet read by the reading unit and an authenticating unit configured to receive a second owner information. The apparatus further comprises a determining unit configured to determine a correlation between a user corresponding to the first owner information and a user corresponding to the second owner information, and an erasing controller configured to selectively control the decoloring unit to decolor the image and the owner information image based on the correlation.

Abstract: An image forming system includes a sheet feed apparatus that feeds a sheet; an image forming apparatus that is provided independently of the sheet feed apparatus and that includes an image-formation transport path used for transporting the sheet fed from the sheet feed apparatus and an image forming section that forms an image onto the sheet transported along the image-formation transport path; and a relay apparatus that is independently provided between the sheet feed apparatus and the image forming apparatus. The relay apparatus relays the sheet fed from the sheet feed apparatus toward the image forming apparatus and ensures a distance along which the sheet is transported from the sheet feed apparatus to the image forming apparatus.

Abstract: Automatic document feeder includes a transport path member having a transport path surface configuring a transport path in a device body, a latching member that is mounted on a rotating shaft provided in the other end side, is urged in a first rotation direction latched to a latched portion, and holds the transport path member in closed transport path, and an operating member that is rotated up to an operating position by own weight thereof or urging force in a second rotation direction when the device body moves to an exposed position of the transport path member, and is mounted with allowance so that the latching member is rotated in the second rotation direction according to a further rotating operation in the second rotation direction from the operating position and the latching member is detached from the latched portion.

Abstract: An original reader capable of being downsized without requiring a large-capacity image memory. A conveying path conveys an original. Sensors are arranged on the conveying path, for detecting the conveyed original. CCD line sensors read the conveyed original. A CPU of the image reader decides the size of the conveyed original based on the results of detection by the sensors. An image memory stores image data output from the line sensors. The CPU transmits the decided original size and the stored image data to a controller. When the CPU cannot decide the original size at a predetermined timing, it transmits one of original size candidates to the controller, as a provisional original size. When the size of the original decided afterwards is different from the provisional original size, the CPU retransmits the decided size of the original.

Abstract: Embodiments of the present invention provide a multi-function device including a housing, a printing assembly disposed within the housing, the printing assembly being configured to print a document, and a copying assembly comprising a complementary metal-oxide-semiconductor (CMOS) image sensor and an illumination source disposed within the housing, the copying assembly further including a substantially flat transparent surface disposed in an optical path of the CMOS image sensor, the substantially flat transparent surface to support an object for image capture by the CMOS image sensor, wherein the illumination source is configured to provide illumination during image capture. Other embodiments may be described and/or claimed.

Abstract: An image reading apparatus is disclosed. The image reading apparatus includes an automatic document feeding unit that transports a document in a predetermined direction while the document floats above a platen glass member and a light source disposed below the platen glass member that irradiates a portion on the document at a predetermined reading location such that reflected light from the portion on the document is converted into image data and a floating distance between the document and the platen glass member is detected to set a value of an image parameter for correcting the image data for the document, based on the detected floating distance between the document and the platen glass member.

Abstract: A scanner comprises a first gear assembly on a frame, a stationary scan surface having a first width, and a scan module having a length substantially less than the first width. The scan module includes a second gear assembly configured to move the scan module, in a first orientation generally perpendicular to the first width, in a first scanning path relative to a first width portion of the scan surface and in a second, non-duplicative scanning path relative to a second width portion of the scan surface. The second gear assembly is releasably engageable to the first gear assembly to selectively shift the scan module, in a second orientation generally perpendicular to the first orientation, between the respective first and second scanning paths.

Abstract: There is provided an image forming apparatus capable of realizing a trial printing function that minimizes unnecessary consumption of time and supplies. Images that are inputted are accumulated in a memory. An output mode is set and a setting is made as to whether trial printing is to be carried out in the output mode or not. A CPU provides control to read out a corresponding image from the memory according to the set output mode and form the readout image on a sheet. When it is determined that the trial printing is to be carried out during image formation according to the set output mode, the CPU provides control to set the number of trial print pages according to predetermined conditions and carry out the trial printing for the set number of trial print pages.

Abstract: When optically scanning a medium, scanning can proceed immediately even if the size of the medium is unknown. Before or when an optical reading device starts scanning to read all of a recording medium, the CPU 40 sets a scan block of a size that can always be scanned based on the output of media edge sensors 47 and the distance from the scanning position of the optical reading device to the detection position of the media edge sensors 47, and then scans the set scan block.

Abstract: An image processing device includes: an image obtaining unit that obtains original images one by one from an original document on which image processing is to be performed by the image processing device; an output unit that outputs each of the original images obtained by the image obtaining unit; an information acquiring unit that acquires control information for controlling operations to be performed by the image processing device, the control information being extracted from a control image represented by a specific image in the original image obtained by the image obtaining unit; and a control unit that determines whether the control information acquired by the information acquiring unit requires an authentication, determines whether an output of the original image having the control information is restricted on the basis of a result of the authentication when the control information requires an authentication, restricts the output of the original image when the output is determined to be restricted, and c

Abstract: There is provided an image reader capable of reading a good image free from the influence of foreign matter such as dust. This image reader includes an ADF, a reader section, a dust correcting section, and a CPU. The CPU controls the ADF and the reader section according to the detection result of the dust correcting section so as to selectively execute one of a first moving original reading mode and a second moving original reading mode. In the first moving original reading mode, the reader section is fixed at a predetermined position to read the images while the originals are fed at a first sheet-to-sheet interval. In the second moving original reading mode, the reader section is fixed at a predetermined position to read the images while the originals are fed at a second sheet-to-sheet interval longer than the first sheet-to-sheet interval.

Abstract: An image reading apparatus includes a feeder, a first reading unit, a first memory which stores image data of the surface of the document read by the first reading unit, a second reading unit located at an upstream side of the first reading position, a second memory which stores image data of the document read by the second reading unit and a controller configured to control the feeder, the first reading unit and the second reading unit. The controller controls to execute pre-scanning the document by the second reading unit over a predetermined range shorter than a separation distance between the first reading position and the second reading position in a transporting direction from a leading edge of the document when the document reaches the second reading position. The controller further controls to execute storing obtained pre-scanned image data into the second memory and measuring the size of the document based on the pre-scanned image data stored in the second memory.

Abstract: There is provided an information processing apparatus wherein if paper used to print a first page of a first print job is not tab paper, the paper of a size equal to the size of the paper used to print the first page is used for a job information sheet and, if the paper used to print the first page of the first print job is tab paper, the paper of a type different from the tab paper of the size determined based on the size of the tab paper used to print the first page is used for the job information sheet.

Abstract: Provided is a document feeding device including: a document feeding portion for feeding a document; a document set detecting portion for detecting presence/absence of a set document; a determination portion for determining whether power supply to the device is started by turning-on of main power or by cancellation of a power saving mode; an initial operation portion for performing an initial operation of initializing the document feeding portion when the power supply to the document feeding device is started by the turning-on of the main power, and restricting execution of the initial operation when the power supply to the document feeding device is started by the cancellation of the power saving mode; and a display portion for displaying, when there is a set document at the start of the power supply, a request to reset the document.

Abstract: An image processing apparatus includes a reading unit configured to read an open document. The open document includes a first page including a first image and a second page including a second image. The apparatus also includes a storing unit configured to store the first page read by the reading unit as first page image data including the first image, and to store the second page read by the reading unit as second page image data including the second image.

Abstract: An image scanning apparatus according to the invention includes: a scanning unit configured to scan each of plural images from plural originals that are inputted; a rotation designating unit configured to designate rotation of the plural images that are scanned, so that an orientation of the plural images that are scanned coincides with a desired image orientation; a first image rotating unit configured to rotate the image that is scanned, in accordance with the designated rotation of the image; an orientation determining unit configured to determine whether the image orientation rotated by the first image rotating unit coincides with the desired image orientation or not; and a second image rotating unit configured to, for an image determined as not coinciding by the orientation determining unit, further rotate the orientation of the image so that the orientation coincides with the desired image orientation.

Abstract: A media handling transport includes first and second device halves. Each of the device halves includes first, second and third body members, with the first end portion of the second body member disposed adjacent the first end portion of the first body member, the first end portion of the third body member disposed adjacent the second end portion of the first body member, and the second end portion of the third body member disposed adjacent the second end portion of the second body member. An inner body member defines a first media transport passageway with the second body member define, a second media transport passageway with the third body member, and a third media transport passageway with the first body member. The second end portions of the second and third body members define an abutting end of the device half, with the abutting end of the first device half disposed adjacent the abutting end of the second device half in an installed transport.

Abstract: A document transporting device includes: a document-accommodating section; a transporting mechanism; a document-discharge section; a holding member that includes an attach-portion that is attached at an upper side of a discharge-port from which a document is discharged to the document-discharge section, and holding portion main-bodies provided such that lower ends are contacted with the document-discharge section, that hold down the document discharged on the document-discharge section from above, a length in a discharge-direction of the document from an attachment-position of the attach-portion to the lower end of the holding portion main-body being longer than a height from the document-discharge section to the attachment-position of the attach-portion; and protruding portions formed in the document-discharge section along a longitudinal direction of the discharge-port such that a top portion of the protruding portion is positioned at a downstream side of the discharge-direction relative to the lower end of

Abstract: When authentication data input before execution of print processing based on a secure print job is authenticated, a copy is printed based on the secure print job (S1909). When print processing for the designated number of copies is to be executed after the print processing, the control prompts the user to input authentication data (S1914) before the print processing. When the authentication data is authenticated, print processing is executed based on the secure print job for the designated number of copies (S1916).

Abstract: There is provided an image forming apparatus capable of realizing a trial printing function that minimizes unnecessary consumption of time and supplies. Images that are inputted are accumulated in a memory. An output mode is set and a setting is made as to whether trial printing is to be carried out in the output mode or not. A CPU provides control to read out a corresponding image from the memory according to the set output mode and form the readout image on a sheet. When it is determined that the trial printing is to be carried out during image formation according to the set output mode, the CPU provides control to set the number of trial print pages according to predetermined conditions and carry out the trial printing for the set number of trial print pages.

Abstract: An image forming apparatus includes a roller shaft, a paper-transporting which is coupled to the roller shaft and transports a document, a driving part to supply a rotational driving force to the paper-transporting roller, a driving wheel which is coupled to the roller shaft and rotates along with the roller shaft, and a clutch unit which includes a clutch shaft having an axial line deviated from an axial line of the roller shaft, a transmission wheel connected with the clutch shaft and which transmits the driving force to the driving wheel, and a rotation connecting part to selectively transmit the rotational driving force to the transmission wheel.

Abstract: A user operates the operation panel portion 6 and selects an image quality mode in a pre-stage of carrying out CD-R printing. If an operation of commencing CD-R printing on the operation panel portion 6 is enabled, the CPU 16 causes the scanner unit 21 to scan a sample CD-R 25 and takes in the image data. The CPU 16 causes the taken-in image data to be subjected to an image working process and masks pixels not required to be printed. The ASIC 20 transfers the processed image data to the printer unit 22 and executes CD-R printing. At this time, the CPU 16 carries out scanning and printing at a resolution responsive to the image quality mode.

Abstract: When an original document is placed on the lift tray, a timer is reset and starts counting a predetermined time. Whether an alignment device is moved to adjust the original documents loaded on the lift tray in, for example, the widthwise direction transverse to the transportation direction is then determined. If a change in the detected width of the original documents is detected, the timer is reset and started again. If there is no change in the detected width of the original documents, a control waits for the timer to time out. If the timer reaches the predetermined time, the lift tray is driven up by the lift motor and rises until the top limit sensor turns on.

Abstract: A media handling transport includes first and second device halves. Each of the device halves includes first, second and third body members, with the first end portion of the second body member disposed adjacent the first end portion of the first body member, the first end portion of the third body member disposed adjacent the second end portion of the first body member, and the second end portion of the third body member disposed adjacent the second end portion of the second body member. An inner body member defines a first media transport passageway with the second body member define, a second media transport passageway with the third body member, and a third media transport passageway with the first body member. The second end portions of the second and third body members define an abutting end of the device half, with the abutting end of the first device half disposed adjacent the abutting end of the second device half in an installed transport.

Abstract: An original processing apparatus capable of enhancing original processing ability even in the case of continuously processing a plurality of originals. In a first processing unit of the original processing apparatus, MICR characters on an original conveyed along a conveying path are read and an image of a front side of the original is read. The original is then conveyed to a position short of a second processing unit, and the next original is fed to the conveying path. When control information including print information is created based on a result of the processing by the first processing unit, the original positioned short of the second processing unit is conveyed to the second processing unit where print information is printed on the original and an image of a back side of the original is read.

Abstract: In an image forming system which has a client unit, a management unit, and a printer unit, when the client unit issues a replacement print request to the management unit, the management unit notifies the client unit of the contents of the print queue in response to the replacement print request. The client unit displays the notified contents of the print queue, and prompts the user to designate a print job to be replaced and an inserting position of a new print job into the print queue. After that, the client unit outputs, to the management unit, replacement information which includes information indicating the designated print job to be replaced, information indicating the designated inserting position, and the new print job. The management unit updates the print queue in accordance with this replacement information.

Abstract: An automatic document feeder (3) has a front plate (12) located on one of opposite sides of the document feeder in a direction orthogonal to a feeding direction of documents P on a document tray (4), and on the side opposed to an operator. A rear plate (13) is on the other side opposed to the front plate (12). An intermediate transport unit (32) located between the front plate (12) and the rear plate (13) has a frame with an outer wall surface (37) serving as a lower guide surface of document transport path. The front plate (12) has an outer edge (33) at a height equal to or lower than the outer wall surface (37), so as to allow the operator to visually check the document (P) on the outer wall surface (37) from the direction orthogonal to the feeding direction of the documents (P).

Abstract: A method of securely duplicating in a copying machine a document which includes a readable security device. A method in accordance with an embodiment of the present invention includes: reading the readable security device to determine contents of the readable security device; copying the document; generating a copy of the readable security device that includes data which is determined from the contents of the readable security device; and attaching the copy of the readable security device to the copy of the document before the copy of the document exits the copying machine to generate a secure duplicate of the document.

Abstract: An image reading apparatus having an improved cover device. The image reading apparatus includes a main body having an upper surface on which a manuscript can be placed, a cover installed at an upper portion of the main body to cover the manuscript when scanning, and a pressing plate movably installed in the direction perpendicular to an upper surface of the cover at an inner portion of the cover so as to press the manuscript. In addition, an elastic member is additionally inserted between the pressing plate and the cover.

Abstract: An image processing system and method for copying an original document while maintaining the security of the document and for providing a high quality copy each time a copy is required.

Abstract: A driving apparatus includes a driving unit, a driven unit driven by the driving unit, a driving control unit configured to control the driving unit by performing feed-forward control based on feed-forward target data determined in advance to reduce a speed change of the driven unit. The speed change of the driven unit is expressed substantially as a positive half cycle of a sinusoidal waveform having an amplitude and a time duration, and the feed-forward target data is calculated from the amplitude and the time duration to represent a rectangular waveform approximating the positive half cycle of the sinusoidal waveform.

Abstract: The present invention provides an image processing apparatus which not only judges the occurrence of multiple feeding with a high accuracy, but also can identify later the location of occurrence of the multiple feeding even if the document reading operation is continued after detecting the occurrence of a multiple feeding. The detection device (the detecting and reading section 53) detects the information storage media attached to the documents which are being fed one sheet at a time by the automatic document feeder 20 and from which the images are being read out. The determining section 56 detects based on the result of this detection the occurrence of multiple feeding in which a plural number of sheets of the document are conveyed in an overlapping state. The information recording section 54 writes the multiple feeding information, indicating that a multiple feeding has occurred, in the information recording medium of the document that was judged to have been fed in an overlapping state.

Abstract: A document discharge cassette, an image scanner having the cassette, and a document scanning method to be embodied by the image scanner having the document discharge cassette attached thereto. The document discharge cassette includes a base, positioned under the document discharge exit provided at the scanner body and through which scanned documents are discharged, on which the discharged documents are stacked, and a document lift to lift a preceding document that is discharged through the document discharge exit higher than the document discharge exit relative to the base and to lower the preceding document on a following document that is discharged after the preceding document and placed at the base.

Abstract: A document transporting device (30) serves as a platen cover to expose and cover platens (21A,21B). A document holder (5) is mounted on a predetermined mounting portion of the device (30). A lateral end of the document holder (5) is withdrawn from a predetermined position where the end is located, so that a document transport path (R) is exposed through an area in which the document holder (5) has been withdrawn. The document transport path (R) is exposed to the left or the right with respect to the front of the device (30).

Abstract: A scanning system for scanning a document placed on a document platen and for projecting an image onto a photosensitive image medium to form a latent image of the document thereon including a housing, a photosensitive scanner, and a scanning window is provided. The photosensitive scanner is adapted to move beneath the platen in a scan operation for projecting the image onto the photosensitive image medium to form the latent image. The scanning window is mounted on a ceiling of the housing and a fringe of the scanning window bordered with a frame, wherein a top surface of the scanning window is substantially equal to or higher than that of the one side of the frame in height. Furthermore, another scanning system for scanning two pages of a book and projecting an image onto a photosensitive image medium to form a latent image of the document thereon is provided.

Abstract: A transparency conveying apparatus is provided with: a first rail for guiding one end of a transparency; a second rail for guiding the other end portion, which is provided parallel to the first rail with the transparency reading region placed between the first and second rails; a first belt for conveying the transparency along the first rail, which faces the first rail in a position where the one end is inserted between the first belt and the first rail; a second belt for conveying the transparency along the second rail, which faces the second rail in a position where the other end is inserted between the second belt and the second rail; a first engagement member for engaging the one end with the first belt; a second engagement member for engaging the other end with the second belt; and a drive unit for rotating the first and second belts.

Abstract: There is provided an image forming apparatus capable of realizing a trial printing function that minimizes unnecessary consumption of time and supplies. Images that are inputted are accumulated in a memory. An output mode is set and a setting is made as to whether trial printing is to be carried out in the output mode or not. A CPU provides control to read out a corresponding image from the memory according to the set output mode and form the readout image on a sheet. When it is determined that the trial printing is to be carried out during image formation according to the set output mode, the CPU provides control to set the number of trial print pages according to predetermined conditions and carry out the trial printing for the set number of trial print pages.

Abstract: A source document guide apparatus prevents curling of a source document as the document is fed through a document reproduction machine. The source document guide includes a flat member having a surface and leading and trailing end portions, and at least one fastener at the leading end portion configured to attach the flat member to the document reproduction machine.

Abstract: An original cover closer has first and second parts for supporting the cover on a main body of office equipment. The first part supports a heavier side of the cover and a second part supports the lighter side of the cover. Both parts have a mounting member with a bottom plate mounted on the main body and a first supporting member having a top plate and side plates extending downwardly, and rotatably mounted via a hinge pin at respective ends of the mounting member. A first lifting member is mounted via a second hinge pin at respective ends of the top plate so that the first lifting member is rotatable in a reverse direction to the first supporting member. A resilient member rotationally urges the cover in an opening direction by applying force toward the first supporting member and applying force on another end toward the first lifting member.

Abstract: When an original document is placed on the lift tray, a timer is reset and starts counting a predetermined time (S12). Whether an alignment device is moved to adjust the original documents loaded on the lift tray in, for example, the widthwise direction transverse to the transportation direction is then determined (S13). If a change in the detected width of the original documents is detected (S13 returns Yes), control returns to S12 and the timer is reset and started again (S12). If there is no change in the detected width of the original documents in S13, control waits for the timer set in S12 to time out (S14). If the timer reaches the predetermined time set in S12 (S15 returns Yes), the lift tray is driven up by the lift motor (S16) and rises until the top limit sensor turns on (S17).

Abstract: A sheet feeding device includes a sheet feed stacker and a transport belt disposed along a platen substantially horizontally; a discharge stacker disposed above the sheet feed stacker; and a light-shielding cover member provided between the platen and the sheet feed stacker for blocking light from the platen. The entire device is arranged above the platen, and it is easy to mount and dismount the device relative to the platen. An original is transported from the sheet feed stacker and to the discharge stacker along the platen with little damage.