Abstract: In one embodiment a sub-assembly of components is provided to assemble a print liquid supply container, the set including a reservoir and a support structure to form a print liquid supply container, the container having a first, second and third dimensions, the support structure to at least partially surround and support the reservoir and to provide stiffness to the container, at least in a folded and mounted condition, the reservoir including a bag to hold the print liquid, being at least partially flexible to collapse for print liquid to be withdrawn from the reservoir, the bag being configured to inhibit fluid exchange, and a neck that is relatively narrow with respect to the bag in a filled state, with an opening to output print liquid from the bag.

Abstract: A recording apparatus includes a conveyance unit that conveys a recording medium in a first direction toward a recording head for ejecting a liquid, a tank including a containing chamber containing the liquid to be supplied to the recording head, and an injection port through which the liquid is injected into the containing chamber, the tank being disposed downstream of the conveyance unit in the first direction, a rotatable lever that holds a tank cap for closing the injection port, and a cover that rotates about a rotation shaft between an open position for exposing the lever and a closed position for covering the lever, the rotation shaft being disposed upstream of the conveyance unit in the first direction. The cover includes a sliding portion that is provided on a surface facing the lever and comes into contact with the lever while the cover is rotating toward the closed position.

Abstract: A remanufactured ink cartridge and a method thereof are provided in the present disclosure. The remanufactured ink cartridge is suitable for an inkjet printer with an ink-suctioning needle and a limiting protrusion which are configured to be adjacent with each other; an original ink cartridge includes a case and an ink discharge part; a cavity for storing the ink is formed in the case; the cavity is separated by a separation plate into a first cavity and a second cavity which are connected to each other through a channel. The remanufacturing method includes forming a limiting groove facing the cavity on the case and adjacent to the ink discharge part, wherein the limiting groove is connected to the second cavity, configured to allow the limiting protrusion to enter the second cavity; and blocking the channel to cut off a fluid connection between the first cavity and the second cavity.

Abstract: A valve assembly and an ink cartridge with the valve assembly are provided. The valve assembly includes a valve cover, a valve base, a diaphragm and a transfer column. The valve cover is disposed on the valve base to define a valve cavity, and the diaphragm is disposed between the valve cover and the valve base and configured for separating the valve cavity into a first deformable cavity and a second deformable cavity independent with each other. The transfer column is fixed in the valve cavity and penetrates through the diaphragm, and at least one of the transfer column and the diaphragm is provided with a passage. The diaphragm moves relative to the transfer column due to a pressure difference between the first deformable cavity and the second deformable cavity, resulting in opening or cutting off communication between the first deformable cavity and the second deformable cavity by the passage.

Abstract: An example of a device (100) may include a valve body (108); a printing substance dispensing nozzle (110) rotatable within the valve body (108) between a sealed orientation and a dispensing orientation; and a locking rod extending through a locking rod window (146) in the valve body (108) and into a locking rod channel (144) in the printing substance dispensing nozzle (110), wherein the locking rod is movable within the locking rod window (146) between a first position, fixing the printing substance dispensing nozzle (110) in the sealed orientation, and a second position allowing rotation of the printing substance dispensing nozzle (110) to the dispensing orientation.

Abstract: An image-forming apparatus includes, in a body having a predetermined house, an image-reading unit and an image-forming unit that is configured to form an image read by the image-reading unit. A discharge portion is configured to discharge a sheet on which the image was formed onto a discharge tray. An intra-apparatus-discharge space is formed in the body between the image-reading unit and the image-forming unit. The housing includes therein a consumption article mounting portion in which a consumption article used by the image-forming unit is mounted. At least a portion of a surface of the housing at a region of the consumption article mounting portion has a light-transmissive property. When the consumption article is consumed and needs to be replenished, the operator can visually check the region of the consumption article mounting portion in the housing from the outside of the body through the transparent portion.

Abstract: In one example in accordance with the present disclosure, a print liquid supply is described. The print liquid supply includes a reservoir for holding a supply of print liquid. The reservoir includes a pliable body having a front face and a back face. The print liquid supply also includes a spout affixed to the reservoir. The spout is located at a corner of the front face offset from a centerline of the front face.

Abstract: An inkjet printer includes an inkjet head configured to discharge ink and an ink tank including a plurality of ink storage portions in which the ink is stored to supply the ink to the inkjet head via a connected tube, and replenishing ports via which the plurality of ink storage portions is replenished with ink, wherein the ink tank has an outer wall facing an outer side of the ink tank and having a thickness greater than a thickness of a partition wall arranged between the plurality of ink storage portions.

Abstract: Dispensers of the present technology are configured to receive a replaceable refill cartridge, and may include a back housing, a front cover, a control unit, a refill housing configured to receive a refill cartridge, and a switch board positioned between the refill housing and the back housing. Dispensers may also include at least one refill guide removably connected to the refill housing. The switch board may include at least one switch operatively connected to the control unit. The at least one switch may be a refill recognition switch configured to send at least a refill recognition signal to the control unit indicating that a refill cartridge is present in the refill housing, or a refill size switch configured to send a refill size signal to the control unit indicating a size of the refill cartridge.

Abstract: A recording apparatus includes a carriage, a liquid container provided on the carriage and in which a liquid is to be injected, the liquid container having a liquid level check portion through which a level of the liquid in the liquid container is visually checked, a recording head disposed in the carriage, and an operation panel disposed on a front surface of the apparatus along the width direction, the operation panel and an exposure section through which the liquid level check portion is exposed are disposed such that the operation panel and the exposure section are visually checked, and the carriage is moved from a home position toward the exposure section and the operation panel and the liquid level check portion are arranged in the width direction when the apparatus side surface is viewed from the front side.

Abstract: Disclosed herein are solvent reservoir systems for steady flow delivery and simultaneous monitoring of solvent level and solvent density within the solvent reservoir systems and methods for monitoring the solvent reservoir systems and providing feedback to a user or adjusting the systems in response to the monitored characteristics.

Abstract: A liquid container to be mounted in a liquid ejection apparatus contains liquid to be ejected from the liquid ejection apparatus. The liquid container comprises a liquid container bag containing liquid, at least one tube arranged in the inner space of the liquid container bag and having the first end open to the inner space, a connection member fitted to the aperture of the liquid container bag and connected to the second end of the tube and a holding member supported by the connection member and arranged in the inner space to hold the tube, the holding member having at least a groove for receiving the tube to be fitted thereinto at a position thereof other than the second end thereof. The holding member can integrally be molded.

Abstract: A liquid storage container includes: a discharge port member including a discharge port through which liquid stored in a storage portion is discharged and a coupling portion in which a male thread portion is arranged on the outside; and a cover portion including a female thread portion on the inside and configured to be attachable to the discharge port member, the female thread portion configured to be screwed to the male thread portion, in which the male thread portion is discontinuous in the coupling portion.

Abstract: An integrated circuit to drive a plurality of fluid actuation devices includes a configuration register, a plurality of interfaces, and control logic. The plurality of interfaces include a mode interface and a data interface. The control logic enables writing to the configuration register in response to a signal on the mode interface transitioning to logic high with a logic high signal on the data interface.

Abstract: A light emitting device includes first and second light emitting elements; and a light guiding member including first and second light receiving portion corresponding to the first and second light emitting elements and configured to emit the light received by the first and second light receiving portions from a light emitting portion via a light guiding portion. The light guiding portion includes a reflecting surface forming portion between the first light receiving portion and the second light receiving portion in the first direction. The reflecting surface forming portion includes first and second reflecting surfaces. The first reflecting surface is formed by surfaces having different angles including a surface that reflects the light from the first light receiving portion to a side of the first light receiving portion.

Abstract: A fluid cartridge and a method for eliminating mechanical stresses on an ejection head chip. The fluid cartridge includes a plastic fluid body having a front wall, a rear wall opposite the front wall, left and right side walls attached to the front wall and to the rear wall, a bottom wall attached to the front wall and the rear wall, and to the left and right side walls. A die bond member is attached to the plastic fluid body adjacent to the bottom wall and an ejection head chip is disposed on the die bond member so that the die bond member is between the bottom wall and the ejection head chip.

Abstract: An image recording apparatus includes a cartridge installing unit for detachably installing a plurality of ink cartridges. The cartridge installing unit includes: a base having a placing surface and aligning the plurality of ink cartridges in a first direction on the placing surface; a moving force applying unit moving an ink cartridge of the plurality of ink cartridges from an installation position to a removal position separated from the installation position in a movement direction including a component of the first direction; and a regulating unit regulating the movement of the ink cartridge from the installation position to the removal position. The moving force applying unit moves the ink cartridge from the installation position to the removal position in a case that the ink cartridge is released from the regulation by the regulating unit.

Abstract: A liquid storage container includes: a discharge port member including a discharge port through which liquid stored in a storage portion is discharged; a cover portion configured to be attachable to the discharge port member and to be capable of opening and closing the discharge port; and a sealing portion formed of a contact portion between the cover portion and the discharge port member. The cover portion includes a groove structure between an outer periphery of the cover portion and the sealing portion.

Abstract: A container for liquid replenishment for replenishing liquid in a liquid ejection apparatus comprises a container body capable of containing the liquid, a spout fitted to the container body and having a front end section including a front end surface and a liquid outlet for allowing the liquid to flow out therefrom, a lid member removably attached to the spout to cover the spout and a liquid absorber arranged on the spout. The liquid outlet is open in the front end surface of the spout and the liquid absorber is arranged at least on an area of the front end surface not occupied by the liquid outlet.

Abstract: Management system for the ink in a printing machine, comprising: one or more tanks (2), each of which is equipped with hydraulic connections (21) for quick coupling and an inner layer of insulation; a docking station (3), arranged to be placed in a printing machine, which comprises hydraulic connections (31) for quick coupling, intended to be connected to the hydraulic connections (21) of one or more tanks (2); motor means (4), associated with the docking station (3) and arranged to transfer a tank (2) between a standby position and an operating position within the docking station, and to produce the coupling of the hydraulic connections (21,31).

Abstract: A liquid residual-amount detecting device includes an optical sensor having a pair of a light emitting portion and a light receiving portion; and a plurality of liquid cartridges, each having a containing portion, a float disposed in the containing portion, and a light shielding portion displaced on a path that crosses an optical path of detection light in synchronization with displacement of the float, wherein the light shielding portions each having a size such that a light amount of the detection light, which the light receiving portion receives, cannot be made smaller than a predetermined light amount by alone; and wherein when the float is at a highest position, they are disposed to be aligned in a direction crossing the optical path so as to shield the optical path, and the light amount, which the light receiving portion receives, is made smaller than the predetermined light amount.

Abstract: A liquid cartridge includes a first surface, a second surface spaced apart from the first surface, and a third surface extending between the first surface and the second surface, with a liquid outlet through the first surface. A circuit board is mounted on the third surface. A locking mechanism includes a locking surface that extends above the third surface, and a liquid detection mechanism includes a light access portion. The light access portion is disposed between the circuit board and the locking surface, and the circuit board is disposed between the first surface and the light access portion.

Abstract: There is provided a technology which can improve the mounting posture of a liquid ejection apparatus when mounted to a liquid container. The liquid container is flexible and includes a storage portion configured to store the liquid and a connection member. The connection member is provided with a liquid outlet which is inserted with a liquid introduction portion, a container-side electrical connector which makes electrical contact with an apparatus-side electrical connection unit while receive at least +Z direction force from the apparatus-side electrical connection unit, a first receiver configured to receive a first positioning portion, a second receiver configured to receive a second positioning portion, and a recess which houses a protrusion of the case. The recess and the container-side electrical connector are formed at positions which at least partially overlap each other when viewed from a Z direction in a mounting state.

Abstract: A recording apparatus includes a first connecting unit which is connectable to a first supply portion to supply a first-color ink into a recording head to eject the first-color ink, and a first prevention unit which prevents the first-color ink through a first supply path from being discharged from a second connecting portion, the second connecting portion being not connected to the recording head. The recording head includes the first supply portion without a portion to supply a second-color ink into the recording head.

Abstract: A recording apparatus including a recording unit that performs recording by discharging a liquid on a medium transported in a transport direction, a liquid storage portion that is disposed on an apparatus front side in an apparatus depth direction and that includes a liquid container that contains the liquid discharged from the recording unit, and a maintenance unit that performs maintenance on the recording unit. In the recording apparatus, the maintenance unit is provided in an end portion area on a first direction side in a width direction, the width direction being a direction intersecting the depth direction, and the liquid storage portion is provided in an end portion area on a second direction side, the second direction side being a side opposite the first direction side in the width direction, the liquid storage portion extending in the depth direction to an occupying area of the maintenance unit.

Abstract: A printing apparatus includes an ink tank and a flow channel member. The tank includes an ink chamber that stores ink, an injection port through which the ink is injected into the chamber, and a first shape portion formed near the injection port. The flow channel member is configured to be disposed inside the injection port and form a channel through which the ink is injected into the chamber. The ink is injected to the chamber from an ink supply container which includes a second shape portion formed near an outlet port of the container and configured to engage the first shape portion. The flow channel member is displaceable in a direction intersecting an inserting direction of inserting the outlet port into the injection port. The container is fixed to the tank by engagement between the first and second shape portions.

Abstract: A print liquid supply apparatus or interface structure to be connected to a print system comprises a liquid channel, liquid interface and integrated circuit contact pads.

Abstract: A print liquid supply interface structure is provided, to fluidically connect a fluid supply container to a receiving station, comprising a liquid channel having at least one liquid channel wall, the liquid channel including a liquid interface, and at least one key pen next and parallel to the needle receiving portion of the liquid channel. In another example a key pen structure is provided. In yet another example an interface structure for receiving a separate key pen is provided.

Abstract: A technique with which deterioration in a function of detecting the remaining amount of liquid can be prevented even in a case where the liquid is thickened or solidified is to be provided. A liquid ejection apparatus is provided with a liquid ejection head configured to eject supplied liquid, a storage unit configured to store the liquid to be supplied to the liquid ejection head, a pivot member configured to be immersed in the liquid stored in the storage unit and be revolvable according to the amount of the liquid, and a detection unit configured to detect the amount of the liquid by use of the pivot member, and the liquid ejection apparatus includes a pivot unit configured to force the pivot member to pivotally move.

Abstract: Disclosed are a system and method of integrating an on-demand compute environment into a local compute environment. The method includes receiving a request from an administrator to integrate an on-demand compute environment into a local compute environment and, in response to the request, automatically integrating local compute environment information with on-demand compute environment information to make available resources from the on-demand compute environment to requesters of resources in the local compute environment such that policies of the local environment are maintained for workload that consumes on-demand compute resources.

Abstract: A liquid container includes a pack main body and a covering body. The covering body covers a part of the pack main body and is more hardly deformable than the pack main body. The pack main body includes a trunk part, a pair of sealing parts and a spout. The trunk part is formed into a rectangular cylindrical shape in a state where the ink is stored. The pair of sealing parts seal both ends of the trunk part. At least one of the sealing parts is formed into a gabled roof shape having a pair of flat portions facing each other in the thickness direction and a pair of gable portions facing each other in a width direction. The covering body includes a pair of covering flat plates covering at least a part of the pair of flat portions.

Abstract: A liquid cartridge includes: a cartridge casing having a liquid storage chamber; a first wall; a second wall; and an air communication passage. The first wall is positioned upward relative to the liquid storage chamber. The second wall is positioned upward relative to the first wall. The air communication passage has a first communication hole in communication with the liquid storage chamber and a communication opening open to an atmosphere. The air communication passage includes: an air chamber defined by the first wall and the second wall and in communication with the liquid storage chamber through the first communication hole; a second communication hole formed in the second wall; and a labyrinth path. The labyrinth path is positioned upward relative to the air chamber, and has one end in communication with the second communication hole and another end in communication with the communication opening.

Abstract: Provided is a storage device including a container that includes an accommodation chamber accommodating fluid or powder, a flexible film that is bonded to the container and covers an opening portion of the accommodation chamber, and a tank holder to which the container having the film bonded thereto is fixed by a screw, in which the screw penetrates the film and fixes the container to the tank holder, and a part of a bonded portion between the film and the container surrounds a portion of the film through which the screw penetrates.

Abstract: Provided is a liquid storage container that allows for a simplified structure and a reduction in the size and the cost of a printing apparatus. To this end, the liquid storage container includes: two liquid chambers partitioned from each other; a flow path through which liquid can move between the liquid chambers; a valve configured to open and close the flow path; a refilling port that is configured to be opened and closed and through which a liquid chamber can be refilled with the liquid; and a pressure adjustment mechanism that is provided in a liquid chamber configured not to be refilled with the liquid through the refilling port and that adjusts a pressure in the printing head.

Abstract: A printing apparatus includes: a tank configured to contain ink; a print head configured to eject ink supplied from the tank; a supply flow path through which liquid is supplied from the tank to the print head; a collection flow path through which liquid is collected from the print head to the tank; a circulation unit configured to circulate ink inside a circulation flow path including the tank, the supply flow path, the print head, and the collection flow path; and a cooling unit configured to cool the tank by blowing.

Abstract: A ROM unit mounted to a bottle has a plurality of terminal plates on the front end surface of the ROM unit. The ROM unit is movable in a direction orthogonal to a bottle axis Ax, and can be positioned at a retreat position where an interference with a contamination preventing eaves is avoided, and a contact position projected more front than the retreat position. The terminal plates can be electrically contacted with reservoir terminals when positioning at the contact position.

Abstract: A liquid cartridge includes: a valve unit configured to be movable to a position to close the atmosphere communication hole and a position to open the atmosphere communication hole; and a lever configured to fix the valve unit to the position to close the atmosphere communication hole by pressing the valve unit and configured to be capable of moving the valve unit to the position to open the atmosphere communication hole by removing the pressing against the valve unit, wherein the lever is configured to remove the pressing against the valve unit by moving in a direction intersecting a direction in which the valve unit moves.

Abstract: A printing-fluid cartridge is inserted into a prescribed insertion space of a cartridge-attachment section in an insertion direction crossing a gravitational direction to be attached thereto in an attached posture. The printing-fluid cartridge includes: a housing including a storage chamber, a supply portion having a supply hole, an electrical interface disposed at an upper surface of the housing, and an interfering surface. The interfering surface is positioned upward of the storage chamber and extends in a widthwise direction of the housing. The interfering surface is positioned downward and frontward relative to the electrical interface and is configured to abut against a projection provided at another insertion space different from the prescribed insertion space of the cartridge-attachment section during an insertion of the printing-fluid cartridge into the another insertion space.

Abstract: A tank set includes: tanks arranged in a predetermined direction, each of the tanks being composed of a casing including: a liquid storage chamber defined by mutually opposing two surfaces and configured to store liquid; an inlet provided to inject the liquid into the liquid storage chamber; and a liquid outflow port through which the liquid flows out from the liquid storage chamber to a liquid-consuming unit. Each of the two surfaces extends in a direction intersecting the predetermined direction, and is at least partially composed of a film.

Abstract: An ink tank includes: a first liquid storage chamber; a second liquid storage chamber communicating with the first liquid storage chamber through a communication passage; an injector having an opening supplying liquid to the first liquid storage chamber; a cap movable between an open position and a closed position with respect to the injector; a slide member which is inserted so as to be vertically movable with respect to the opening of the injector, the slide member being moved downward by the cap in the closed position; a valve body which is vertically movably inserted in the communication passage and includes a first sealing member opening the communication passage by moving downward together with the slide member moved downward by the cap in the closed position; and an urging member always urging the valve body upward.

Abstract: A unitary, molded fluid reservoir body to which a fluid ejection head substrate is attached. The unitary, molded fluid reservoir body includes one or more discrete fluid chambers therein. Each of the one or more fluid chambers have an open top, side walls, and sloped bottom walls attached to the side walls, wherein each of the one or more fluid chambers terminates in a fluid supply via, and wherein the sloped bottom walls have an angle ranging from about 6 to about 12 degrees relative to a plane orthogonal to the sidewalls. An ejection head support face is disposed opposite the open top for attachment of a single fluid ejection device to the ejection head support face for ejecting fluid provided from the one or more chambers through the one or more fluid supply vias.

Abstract: A method of installing a printhead in a print module includes the steps of: positioning the printhead in a nest of the print module; moving first and second ink couplings towards the nest and into engagement with complementary first and second ink ports positioned at opposite ends of the printhead; and moving a depressor towards the nest and into urging engagement with a portion of the printhead positioned between the first and second ink ports. The first ink coupling, the second ink coupling and the depressor are moved simultaneously, linearly and parallel to each other, thereby to datum the printhead against the nest.

Abstract: An ink-sack-replaceable ink cartridge includes a cartridge body, which includes a bottom wall, two lateral walls extending upward from two sides of the bottom wall, and two end walls extending upward from two ends of the bottom wall and connected to the lateral walls. The bottom wall, the lateral walls, and the end walls jointly define a receiving space. The bottom wall is formed with a through hole. Each of the lateral walls includes a cartridge-body slide coupling section. A cartridge cover includes a top wall and two side walls extending downward from two sides of the top wall. Each of the side walls includes a cartridge-cover slide coupling section. The cartridge-cover slide coupling sections are slidably connectable with the cartridge-body slide coupling sections, so that the cartridge cover is combinable with and separable from the cartridge body through slidable connection for closing or opening the receiving space.

Abstract: A liquid storage container includes a storage chamber that stores a liquid, a filter chamber that is provided with a filter and receives the liquid from the storage chamber to filter the liquid by the filter, and a partition wall that separates the storage chamber and the filter chamber. The partition wall is provided with a communication hole structure that allows the storage chamber and the filter chamber to communicate with each other. A shape of one or more openings of the communication hole structure in the storage chamber is a shape in which a distance from a center of gravity of an entirety of the one or more openings to the closest point in a contour defining the one or more openings is smaller than a radius of a circle having the same area as an area of the entirety of the one or more openings.

Abstract: A method for franking mail items fed to a franking machine. The mail items are drawn from the underside of a stack for separation or are fed individually on a conveying section upstream of the franking machine to a printing unit for franking, after franking, are discharged in the opposite direction from the printing unit. The mail items are fed via a diverter section to the conveying section, after franking, are conveyed via the diverter section which is switched over to change the conveying direction into a depositing apparatus below the diverter section. The mail items are guided in the opening region of the franking machine into the printing position and are returned out of the printing position. The printing position of a mail item fed to the printing unit is determined by a print head movement-controlled from a readiness position pursuant to the format length of the mail item.

Abstract: A printing-fluid cartridge is inserted into a printing-fluid consuming apparatus in an insertion direction crossing a gravitational direction and attached thereto in a first posture. The printing-fluid cartridge includes: a storage chamber, a supply portion having a supply port, an upper surface and a locking surface positioned upward of the storage chamber, an electrical interface disposed at the upper surface, and a contact surface positioned rearward relative to the supply port of the supply portion in the insertion direction in the first posture. The printing-fluid cartridge inserted in the printing-fluid consuming apparatus is movable between the first posture and a second posture. In the first posture, the locking surface engages a lock portion and the contact surface abuts against a positioning portion. In the second posture, the locking surface is positioned downward relative to the lock portion and the contact surface is separated from the positioning portion.

Abstract: The liquid storage unit includes a rectangular parallelepiped case having an open upper surface and a liquid storage pack including a rectangular parallelepiped adapter. The liquid storage pack is detachably housed in the case, the case includes a convex portion that protrudes from the inner side surface along a first direction perpendicular to a bottom surface, the adapter includes a concave portion that is formed on the outer side surface along a first direction and open to the lower surface, and the concave portion can engage with the convex portion in a second direction perpendicular to the first direction and parallel to the inner side surface, and is formed asymmetrically with respect to a surface that passes through the center of the adapter in the first direction and is perpendicular to the first direction.

Abstract: Provided is a liquid storage pack including: a flat flexible bag member storing a liquid to be supplied to a liquid ejection apparatus; and a spacer member provided inside the bag member. The spacer member has an outer shape that is symmetrical with respect to a predetermined reference plane, and is disposed such that, in a state where the bag member is fully filled with the liquid, the reference plane is offset from a center plane of the bag member in a thickness direction of the bag member, the center plane passing a center of the bag member in the thickness direction and being perpendicular to the thickness direction. This liquid storage pack can stably supply the liquid therein at a uniform concentration.

Abstract: A liquid tank includes: a liquid supply section; a liquid chamber; a liquid-communication flow path an air-communication flow path. The liquid-communication flow path has, in a liquid flow direction from the liquid chamber toward the liquid ejecting head: an upstream end coupled to the liquid chamber; an upward flow path located downstream of the upstream end and extending upward in the attached state; a downward flow path located downstream of the upward flow path and extending downward in the attached state; and a downstream end located downstream of the downward flow path and coupled to the liquid supply section and the air-communication flow path. The liquid-communication flow path has, at an intermediate position thereof, a narrow portion in which the sectional area of the liquid-communication flow path is small.

Abstract: The printing apparatus includes a carriage having a print head mounted thereon, a carriage guide configured to guide movement of the carriage and to support the carriage, an optical scale member having an optical scale, an optical sensor mounting member having an optical sensor mounted thereon to read the optical scale, the optical sensor mounting member being fixed to a support surface of a support wall of the carriage, and a head portion of the fixing screw configured to be switched between a fixed state in which the optical sensor mounting member is fixed to the carriage and a release state in which the fixed state is released. The head of the fixing screw is located on a side opposite to the support surface with respect to the support wall when the optical sensor mounting member is in the fixed state.