Abstract: A multi-inclined anvil structure for a stapler has a body, an operating portion and a flattening surface. The body has a horizontal imaginary plane. The operating portion is recessed downward in the top of the body and has a projection plane that has a narrow front and a wide rear. The flattening surface is formed in a bottom surface of the operating portion and has two inclined bottom portions. Each inclined bottom portion is inclined and has a high front and a low rear relative to the horizontal imaginary plane. An inclined bottom angle is formed between an extension direction of the inclined bottom portions and the horizontal imaginary plane. When the stapler is applied to staple a few sheets of paper, a staple-sliding problem can be resolved. When the stapler is applied to staple many sheets of paper, a well-clinched quality can be provided.

Abstract: An automatic cover-opening device has a body, at least one cover panel and a recoil mechanism. The body has an insertion hole defined in the body. The at least one cover panel is mounted on the body and moveably closes the insertion hole. Each one of the at least one cover panel has a guiding segment having at least one guiding edge inclined relative to an axis of the insertion hole to guide an axial force along the axis of the insertion hole to a lateral direction non-parallel with the axis, so as to generate a lateral component force for opening the at least one cover panel. The recoil mechanism is disposed on the body to push the at least one cover panel to a closed position for closing the insertion hole. With such an arrangement, an automatic cover-opening device that can be applied for insertion of a rod-like object is provided.

Abstract: A lead frame has a metal base, a silver-plated layer, and a silver oxide layer. The silver-plated layer is formed between the metal base and the silver oxide layer. The silver oxide layer has a polar outer surface and a thickness of equal to or more than 1.3 nanometers. The silver oxide layer is beneficial to increase the adhesive strength between the lead frame and the molding compound and avoid delamination of the molding compound from the lead frame, so the lead frame of the present invention can pass a more severe moisture sensitivity level when exposed to the environment.

Abstract: A cutter assembly has a blade holder, a blade, a slider and a screw-locking device. The blade is moveably mounted in the blade holder and has a moving direction. The blade holder has a bottom and multiple engaging segments disposed on the bottom along the moving direction of the blade. The slider is mounted slidably on the blade holder and connected to the blade. The screw-locking device is mounted on the slider and has a locking bolt and a locking sleeve screwed with each other. The locking bolt has an end selectively engaging at least one of the engaging segments.

Abstract: A thin film dispenser has a body, a moving assembly, a resilient positioning element, a dispensing unit and a push button. The body has an opening, a sliding channel and two sets of positioning recesses. The moving assembly is connected to the dispensing unit. The resilient positioning element is connected to the moving assembly and has a positioning segment selectively engaging one of the two sets of positioning recesses. The dispensing unit has a dispensing head corresponding to the opening of the body. The push button is mounted slidably in the sliding channel of the body, is connected to the moving assembly and selectively pushes against the positioning segment of the resilient positioning element to disengage from a corresponding set of positioning recesses to enable the moving assembly to move relative to the body.

Abstract: A pencil sharpener has a waste case, a blade base, a blocking chunk, a blade, a rotating knob and an adjusting shaft. The waste case has a mounting hole and multiple positioning segments formed on the inner wall of the mounting hole. The blocking chunk is moveably mounted on the bottom of the blade base along an axial direction of the blade base. The blade is mounted securely on the blade base. The rotating knob is mounted rotatably in the mounting hole in the waste case and has at least one engaging segment selectively engaging the positioning segments of the waste case. The adjusting shaft is connected securely with the rotating knob and is disposed on the blocking chunk. When the rotating knob is rotated, the adjusting shaft is rotated to push the blocking chunk to move along the axial direction of the blade base.

Abstract: A cutter with a slider that can be pushed from two directions has a housing, a blade holder, a slider, and a blade. The slider is mounted moveably on the housing, is connected to the blade holder, and has an upper sliding element, a lower sliding element, and a resilient tab engaging at least one tooth formed on the blade holder. The upper sliding element has an L-shaped cross section to form a top wall and a side wall corresponding respectively to a top wall and a side wall of the housing. A guiding recess is defined by the side wall of the upper sliding element to slidably receive a portion of the side wall of the housing that forms an edge of a guiding channel. Accordingly, the cutter is convenient in use.

Abstract: A stationery tool has a body, a pushbutton, a working element, and a push-proof device. The pushbutton is pushably and rotatably mounted on an end of the body. The working element is mounted in the body and is connected to and driven by the pushbutton. The push-proof device is mounted between the body and the pushbutton and has a blocking protrusion and a blocking segment. The blocking protrusion is disposed on the pushbutton. The blocking segment is disposed on the body, selectively abuts the blocking protrusion and has a passage defined in the blocking segment to allow the blocking protrusion to pass the blocking segment. Accordingly, a push-proof capability is provided to the pushbutton to prevent the working element from extending out of the body unintentionally.

Abstract: A slider has an upper sliding element, a lower sliding element and a resilient tab. The upper sliding element has two first engaging segments disposed on an inner side of the upper sliding element. The lower sliding element has two second engaging segments disposed on an outer side facing the inner side of the upper sliding element and engaging the first engaging segments. A tab holding base is formed on and protrudes from the outer side of the lower sliding element and has a chamber defined in the tab holding base. The resilient tab is held in the chamber in the lower sliding element and has two legs. Accordingly, a slider having a structure in a closed condition is provided to prevent objects from entering into the chamber to interfere the operation of the resilient tab and the operation of the slider is smooth.

Abstract: A stationery tool has a body and a rubber holding device. The body has a holding end and a holding recess defined in the holding end. The rubber holding device is detachably or securely mounted in the holding recess for holding a rubber to adjust an extension length of the rubber relative to the body and has a clamping segment and a guiding segment. The clamping segment has multiple clamping protrusions for pressing against the rubber. The guiding segment extends outwardly and makes an opening of the rubber holding device have a distance from the clamping segment. Accordingly, the stationery tool has capabilities of adjusting an extension length of the rubber and conveniently replacing a used rubber.

Abstract: A tape holding device has a holding frame and an engaging component. The holding frame has a connecting segment and at least one elastic arm connected to the connecting component. The at least one elastic arm is elastic and can swing relative to the connecting segment. The engaging component is formed on the at least one elastic arm away from the connecting segment and has at least one engaging tab. The at least one engaging tab is formed on and protrudes from an inner surface of the at least one elastic arm that is opposite to the holding frame to abut and engage a tape supplying wheel of a dispensing unit to limit the rotation of the tape supplying wheel. The tape holding device prevents a tape from loosening, prevents a thin film on the tape from peeling and can be used to replace a new dispensing unit conveniently.

Abstract: An adhesive tape dispenser has a body, an adhesive tap dispensing unit, a knob, a pushing element and a resilient element. The adhesive tape dispensing unit is mounted in the body. The knob is mounted rotatably on the body and has a guiding structure formed obliquely on the knob and having two ends each having a limiting capability to restrict a rotating range of the knob relative to the body between the ends of the guiding structure. The pushing element is mounted slidably in the body, is connected between the knob and the adhesive tape dispensing unit and has a guided structure connected slidably to slide along the guiding structure on the knob when the knob is rotated. The resilient element is mounted in the body to provide a recoil force to the adhesive tape dispensing unit.

Abstract: A cutter assembly for an electric pencil sharpener has a cutter bracket and a cutter. The cutter bracket has a pencil sharpening hole and an engaging structure. The pencil sharpening hole is defined in the cutter bracket for a pencil to be inserted into the pencil sharpening hole. The engaging structure is formed on the cutter bracket to engage a rotating frame in the electric pencil sharpener. The cutter is mounted rotatably on the cutter bracket. Accordingly, the cutter assembly is replaceable for the electric pencil sharpener when the cutter of the cutter assembly is damaged or worn.

Abstract: A cutter assembly for an electric pencil sharpener has a cutter bracket and a cutter. The cutter bracket has a pencil sharpening hole and an engaging structure. The pencil sharpening hole is defined in the cutter bracket for a pencil to be inserted into the pencil sharpening hole. The engaging structure is formed on the cutter bracket to engage a rotating frame in the electric pencil sharpener. The cutter is mounted rotatably on the cutter bracket. Accordingly, the cutter assembly is replaceable for the electric pencil sharpener when the cutter of the cutter assembly is damaged or worn.